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geointel/scripts/accuracy_phase4_evaluator.py
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Python

"""Fail-closed, task-aware metrics for the GeoIntel Phase 4 benchmark.
The bundled portfolio is a synthetic contract fixture. Nothing emitted by
this module is, by itself, evidence of production-model accuracy.
"""
from __future__ import annotations
import hashlib
import json
import math
from collections import defaultdict
from pathlib import Path
from statistics import mean, median
from typing import Any, Callable, Iterable
EVALUATOR_VERSION = "2.0.0"
REPORT_SCHEMA_VERSION = 2
SUBGROUP_MIN_CASE_SUPPORT = 5
CANONICAL_JSON_SPEC = (
"UTF-8 JSON produced with sort_keys=true, separators=(',', ':'), "
"ensure_ascii=false and allow_nan=false"
)
TASKS = {
"object_detection",
"footprint_segmentation",
"raster_classification",
"vector_comparison",
"change_detection",
"terrain_interpretation",
"geospatial_data_validation",
}
VALID_ANOMALY_SEVERITIES = {
"blocker",
"critical",
"major",
"minor",
"informational",
}
ERROR_CODES = {
"false_positive": "M-FP-CONFUSER",
"false_negative": "M-FN-MISSED",
"event_false_positive": "M-FP-CONFUSER",
"event_false_negative": "M-FN-MISSED",
"validation_false_positive": "D-VALIDATION-FP",
"validation_false_negative": "D-VALIDATION-FN",
"terrain_missing": "P-PARTIAL",
}
def canonical_json_bytes(value: Any) -> bytes:
"""Return the exact canonical byte representation used by all hashes."""
return json.dumps(
value,
ensure_ascii=False,
sort_keys=True,
separators=(",", ":"),
allow_nan=False,
).encode("utf-8")
def canonical_hash(value: Any) -> str:
return hashlib.sha256(canonical_json_bytes(value)).hexdigest()
def file_sha256(path: Path) -> str:
digest = hashlib.sha256()
with path.open("rb") as stream:
for chunk in iter(lambda: stream.read(1024 * 1024), b""):
digest.update(chunk)
return digest.hexdigest()
def safe_rate(numerator: int | float, denominator: int | float) -> float | None:
return float(numerator) / float(denominator) if denominator else None
def f1_score(precision: float | None, recall: float | None) -> float | None:
if precision is None or recall is None or precision + recall == 0:
return None
return 2 * precision * recall / (precision + recall)
def count_metrics(tp: int, fp: int, fn: int) -> dict[str, Any]:
precision = safe_rate(tp, tp + fp)
recall = safe_rate(tp, tp + fn)
return {
"true_positive": tp,
"false_positive": fp,
"false_negative": fn,
"prediction_count": tp + fp,
"reference_count": tp + fn,
"precision": precision,
"recall": recall,
"f1": f1_score(precision, recall),
"false_discovery_rate": safe_rate(fp, tp + fp),
"miss_rate": safe_rate(fn, tp + fn),
"precision_ci95_wilson": wilson_interval(tp, tp + fp),
"recall_ci95_wilson": wilson_interval(tp, tp + fn),
}
def wilson_interval(
successes: int, total: int, z: float = 1.959963984540054
) -> dict[str, Any]:
if total <= 0:
return {"status": "undefined", "lower": None, "upper": None, "support": total}
proportion = successes / total
denominator = 1 + z * z / total
centre = (proportion + z * z / (2 * total)) / denominator
margin = (
z
* math.sqrt((proportion * (1 - proportion) + z * z / (4 * total)) / total)
/ denominator
)
return {
"status": "computed",
"lower": max(0.0, centre - margin),
"upper": min(1.0, centre + margin),
"support": total,
"method": "Wilson score interval",
}
def _finite_float(value: Any, label: str) -> float:
if isinstance(value, bool) or not isinstance(value, (int, float)):
raise ValueError(f"{label} must be a finite number")
converted = float(value)
if not math.isfinite(converted):
raise ValueError(f"{label} must be a finite number")
return converted
def _probability(value: Any, label: str) -> float:
converted = _finite_float(value, label)
if not 0.0 <= converted <= 1.0:
raise ValueError(f"{label} must be between 0 and 1")
return converted
def _nonempty_mapping(value: Any, label: str) -> dict[str, Any]:
if not isinstance(value, dict) or not value:
raise ValueError(f"{label} must be a non-empty object")
return value
def _validate_case_common(case: dict[str, Any]) -> None:
sample_id = case.get("sample_id")
if not isinstance(sample_id, str) or not sample_id.strip():
raise ValueError("Every case requires a non-empty sample_id")
if case.get("task") not in TASKS:
raise ValueError(f"{sample_id}: unsupported task {case.get('task')!r}")
if not isinstance(case.get("metadata"), dict):
raise ValueError(f"{sample_id}: metadata must be an object")
if not isinstance(case.get("config"), dict):
raise ValueError(f"{sample_id}: config must be an explicit object")
_nonempty_mapping(case.get("lineage"), f"{sample_id}: lineage")
def _stable_id(item: dict[str, Any], label: str) -> str:
identifier = item.get("id")
if not isinstance(identifier, str) or not identifier.strip():
raise ValueError(f"{label} requires a non-empty string id")
return identifier
def _validate_unique_ids(items: list[dict[str, Any]], label: str) -> None:
identifiers = [
_stable_id(item, f"{label}[{index}]") for index, item in enumerate(items)
]
duplicates = sorted(
{identifier for identifier in identifiers if identifiers.count(identifier) > 1}
)
if duplicates:
raise ValueError(f"{label} contains duplicate ids: {duplicates}")
def _validate_bbox(value: Any, label: str) -> list[float]:
if not isinstance(value, list) or len(value) != 4:
raise ValueError(f"{label} must be [min_x, min_y, max_x, max_y]")
bbox = [
_finite_float(coordinate, f"{label}[{index}]")
for index, coordinate in enumerate(value)
]
if bbox[2] <= bbox[0] or bbox[3] <= bbox[1]:
raise ValueError(f"{label} must have positive width and height")
return bbox
def _validate_classes(case: dict[str, Any]) -> list[str | int]:
sample_id = case["sample_id"]
classes = case.get("classes")
if not isinstance(classes, list) or not classes:
raise ValueError(f"{sample_id}: classes must be a non-empty list")
if any(
isinstance(value, bool) or not isinstance(value, (str, int))
for value in classes
):
raise ValueError(f"{sample_id}: classes may contain only strings or integers")
if len({canonical_hash(value) for value in classes}) != len(classes):
raise ValueError(f"{sample_id}: classes must be unique")
if len({type(value) for value in classes}) != 1:
raise ValueError(f"{sample_id}: class values must use one JSON scalar type")
return classes
def _validate_labeled_items(
case: dict[str, Any],
items: list[dict[str, Any]],
label: str,
) -> None:
classes = _validate_classes(case)
for index, item in enumerate(items):
if item.get("class") not in classes:
raise ValueError(
f"{case['sample_id']}: {label}[{index}].class is outside the "
"declared ontology"
)
def _class_compatible(left: dict[str, Any], right: dict[str, Any]) -> bool:
return left.get("class") == right.get("class")
def bbox_iou(left: list[float], right: list[float]) -> float:
x1, y1 = max(left[0], right[0]), max(left[1], right[1])
x2, y2 = min(left[2], right[2]), min(left[3], right[3])
intersection = max(0.0, x2 - x1) * max(0.0, y2 - y1)
left_area = max(0.0, left[2] - left[0]) * max(0.0, left[3] - left[1])
right_area = max(0.0, right[2] - right[0]) * max(0.0, right[3] - right[1])
union = left_area + right_area - intersection
return intersection / union if union > 0 else 0.0
def greedy_match(
predictions: list[dict[str, Any]],
references: list[dict[str, Any]],
overlap: Callable[[dict[str, Any], dict[str, Any]], float],
threshold: float,
*,
class_aware: bool = False,
) -> tuple[list[dict[str, Any]], list[dict[str, Any]], list[dict[str, Any]]]:
unmatched = set(range(len(references)))
matches: list[dict[str, Any]] = []
false_positives: list[dict[str, Any]] = []
ordered = sorted(
predictions,
key=lambda item: (
-float(item.get("confidence", 1.0)),
_stable_id(item, "prediction"),
),
)
for prediction in ordered:
candidates: list[tuple[float, str, int]] = []
for index in sorted(unmatched):
reference = references[index]
if class_aware and not _class_compatible(prediction, reference):
continue
candidates.append(
(
overlap(prediction, reference),
_stable_id(reference, "reference"),
index,
)
)
if candidates:
score, _reference_id, index = min(
candidates, key=lambda item: (-item[0], item[1])
)
else:
score, index = 0.0, -1
if index >= 0 and score >= threshold:
unmatched.remove(index)
match = {
"prediction_id": prediction["id"],
"reference_id": references[index]["id"],
"overlap": score,
"confidence": prediction.get("confidence"),
}
if class_aware:
match["class"] = prediction["class"]
matches.append(match)
else:
false_positives.append(prediction)
false_negatives = [references[index] for index in sorted(unmatched)]
return matches, false_positives, false_negatives
def interpolated_ap(
points: list[tuple[float, str, int]],
reference_count: int,
) -> float | None:
if reference_count <= 0:
return None
ordered = sorted(points, key=lambda item: (-item[0], item[1]))
true_positive = 0
false_positive = 0
curve: list[tuple[float, float]] = []
for _confidence, _stable_prediction_id, correct in ordered:
true_positive += correct
false_positive += 1 - correct
curve.append(
(
true_positive / reference_count,
true_positive / (true_positive + false_positive),
)
)
values = []
for step in range(101):
recall_level = step / 100
values.append(
max(
(precision for recall, precision in curve if recall >= recall_level),
default=0.0,
)
)
return sum(values) / len(values)
def detection_ap(
predictions: list[dict[str, Any]],
references: list[dict[str, Any]],
iou_threshold: float,
) -> float | None:
unmatched = set(range(len(references)))
points: list[tuple[float, str, int]] = []
ordered = sorted(
predictions,
key=lambda item: (
-float(item["confidence"]),
_stable_id(item, "prediction"),
),
)
for prediction in ordered:
candidates: list[tuple[float, str, int]] = []
for index in sorted(unmatched):
reference = references[index]
if not _class_compatible(prediction, reference):
continue
candidates.append(
(
bbox_iou(prediction["bbox"], reference["bbox"]),
_stable_id(reference, "reference"),
index,
)
)
if candidates:
score, _reference_id, index = min(
candidates, key=lambda item: (-item[0], item[1])
)
else:
score, index = 0.0, -1
correct = int(index >= 0 and score >= iou_threshold)
if correct:
unmatched.remove(index)
points.append((float(prediction["confidence"]), prediction["id"], correct))
return interpolated_ap(points, len(references))
def calibration_metrics(
predictions: list[dict[str, Any]], matches: list[dict[str, Any]], bins: int = 5
) -> dict[str, Any]:
matched_ids = {item["prediction_id"] for item in matches}
scored = [
(float(item["confidence"]), 1 if item.get("id") in matched_ids else 0)
for item in predictions
]
if not scored:
return {"ece": None, "brier": None, "bins": [], "status": "undefined"}
blocks = []
ece = 0.0
for index in range(bins):
lower = index / bins
upper = (index + 1) / bins
selected = [
(confidence, correct)
for confidence, correct in scored
if lower <= confidence <= upper
and (index == bins - 1 or confidence < upper)
]
if not selected:
blocks.append(
{
"lower": lower,
"upper": upper,
"count": 0,
"mean_confidence": None,
"accuracy": None,
}
)
continue
avg_confidence = mean(item[0] for item in selected)
accuracy = mean(item[1] for item in selected)
ece += len(selected) / len(scored) * abs(accuracy - avg_confidence)
blocks.append(
{
"lower": lower,
"upper": upper,
"count": len(selected),
"mean_confidence": avg_confidence,
"accuracy": accuracy,
}
)
return {
"status": "computed",
"ece": ece,
"brier": mean((confidence - correct) ** 2 for confidence, correct in scored),
"bins": blocks,
"binning": "five fixed equal-width bins",
}
def coverage_risk(
predictions: list[dict[str, Any]],
references: list[dict[str, Any]],
match_iou: float,
operating_threshold: float,
) -> list[dict[str, Any]]:
"""Report retention, reference coverage and risk including every FN."""
thresholds = sorted({0.0, 0.5, 0.7, 0.9, operating_threshold})
rows = []
for threshold in thresholds:
retained = [
item for item in predictions if float(item["confidence"]) >= threshold
]
matches, false_positives, false_negatives = greedy_match(
retained,
references,
lambda prediction, reference: bbox_iou(
prediction["bbox"], reference["bbox"]
),
match_iou,
class_aware=True,
)
tp = len(matches)
fp = len(false_positives)
fn = len(false_negatives)
rows.append(
{
"threshold": threshold,
"retained_prediction_count": len(retained),
"total_prediction_count": len(predictions),
"retained_prediction_coverage": safe_rate(
len(retained), len(predictions)
),
"matched_reference_count": tp,
"reference_count": len(references),
"reference_coverage": safe_rate(tp, len(references)),
"false_positive_count": fp,
"false_negative_count": fn,
"risk": safe_rate(fp + fn, tp + fp + fn),
"risk_definition": (
"(false_positive + false_negative) / "
"(true_positive + false_positive + false_negative)"
),
}
)
return rows
def _mean_or_none(values: Iterable[float | None]) -> float | None:
retained = [value for value in values if value is not None]
return mean(retained) if retained else None
def _validate_detection_case(
case: dict[str, Any],
) -> tuple[list[dict[str, Any]], list[dict[str, Any]]]:
references = case.get("references")
predictions = case.get("predictions")
if not isinstance(references, list) or not all(
isinstance(item, dict) for item in references
):
raise ValueError(f"{case['sample_id']}: references must be an object list")
if not isinstance(predictions, list) or not all(
isinstance(item, dict) for item in predictions
):
raise ValueError(f"{case['sample_id']}: predictions must be an object list")
_validate_unique_ids(references, f"{case['sample_id']}.references")
_validate_unique_ids(predictions, f"{case['sample_id']}.predictions")
_validate_labeled_items(case, references, "references")
_validate_labeled_items(case, predictions, "predictions")
for index, item in enumerate(references):
_validate_bbox(
item.get("bbox"),
f"{case['sample_id']}.references[{index}].bbox",
)
for index, item in enumerate(predictions):
_validate_bbox(
item.get("bbox"),
f"{case['sample_id']}.predictions[{index}].bbox",
)
_probability(
item.get("confidence"),
f"{case['sample_id']}.predictions[{index}].confidence",
)
return references, predictions
def evaluate_object_detection(case: dict[str, Any]) -> dict[str, Any]:
references, predictions = _validate_detection_case(case)
threshold = _probability(
case["config"].get("confidence_threshold"),
f"{case['sample_id']}.config.confidence_threshold",
)
match_iou = _probability(
case["config"].get("match_iou"),
f"{case['sample_id']}.config.match_iou",
)
retained = [item for item in predictions if float(item["confidence"]) >= threshold]
matches, false_positives, false_negatives = greedy_match(
retained,
references,
lambda prediction, reference: bbox_iou(prediction["bbox"], reference["bbox"]),
match_iou,
class_aware=True,
)
per_class = {}
for class_value in case["classes"]:
class_predictions = [item for item in retained if item["class"] == class_value]
all_class_predictions = [
item for item in predictions if item["class"] == class_value
]
class_references = [item for item in references if item["class"] == class_value]
class_matches, class_fp, class_fn = greedy_match(
class_predictions,
class_references,
lambda prediction, reference: bbox_iou(
prediction["bbox"], reference["bbox"]
),
match_iou,
class_aware=True,
)
class_metrics = count_metrics(len(class_matches), len(class_fp), len(class_fn))
class_metrics["ap50"] = detection_ap(
all_class_predictions, class_references, 0.5
)
per_class[str(class_value)] = class_metrics
metrics = count_metrics(len(matches), len(false_positives), len(false_negatives))
metrics.update(
{
"operating_confidence": threshold,
"match_iou": match_iou,
"matched_iou": distribution([item["overlap"] for item in matches]),
"ap50": detection_ap(predictions, references, 0.5),
"ap50_95": _mean_or_none(
detection_ap(predictions, references, 0.5 + step * 0.05)
for step in range(10)
),
"per_class": per_class,
"calibration": calibration_metrics(retained, matches),
"coverage_risk": coverage_risk(
predictions, references, match_iou, threshold
),
}
)
return result(
case,
metrics,
matches,
false_positives,
false_negatives,
post_filter_predictions=retained,
filter_description={
"applied": True,
"field": "confidence",
"operator": ">=",
"threshold": threshold,
},
)
def polygon(item: dict[str, Any]):
from shapely.geometry import Polygon
return Polygon(item["polygon"])
def distribution(values: list[float]) -> dict[str, Any]:
if not values:
return {"count": 0, "mean": None, "median": None, "min": None, "max": None}
if any(not math.isfinite(value) for value in values):
raise ValueError("Distribution values must be finite")
ordered = sorted(values)
return {
"count": len(values),
"mean": mean(values),
"median": median(values),
"min": ordered[0],
"max": ordered[-1],
}
def _validate_metric_spatial_context(case: dict[str, Any]) -> dict[str, Any]:
context = _nonempty_mapping(
case.get("spatial_context"),
f"{case['sample_id']}: spatial_context",
)
if context.get("metric") is not True:
raise ValueError(f"{case['sample_id']}: spatial_context.metric must be true")
if context.get("coordinate_units") != "m":
raise ValueError(
f"{case['sample_id']}: spatial_context.coordinate_units must be 'm'"
)
crs_value = context.get("crs")
if not isinstance(crs_value, str) or not crs_value.strip():
raise ValueError(f"{case['sample_id']}: a non-empty CRS is required")
try:
from pyproj import CRS
crs = CRS.from_user_input(crs_value)
except Exception as exc: # noqa: BLE001 - invalid CRS must fail closed
raise ValueError(f"{case['sample_id']}: invalid CRS {crs_value!r}") from exc
if not crs.is_projected:
raise ValueError(
f"{case['sample_id']}: metric geometry requires a projected CRS"
)
if not crs.axis_info or any(
axis.unit_conversion_factor is None
or not math.isclose(
axis.unit_conversion_factor,
1.0,
rel_tol=0.0,
abs_tol=1e-12,
)
for axis in crs.axis_info[:2]
):
raise ValueError(f"{case['sample_id']}: CRS axes must use metres")
return context
def _validated_polygon(item: dict[str, Any], label: str):
coordinates = item.get("polygon")
if not isinstance(coordinates, list) or len(coordinates) < 4:
raise ValueError(
f"{label}.polygon must contain a closed ring with at least four points"
)
normalized: list[tuple[float, float]] = []
for index, point in enumerate(coordinates):
if not isinstance(point, list) or len(point) != 2:
raise ValueError(f"{label}.polygon[{index}] must be an [x, y] pair")
normalized.append(
(
_finite_float(point[0], f"{label}.polygon[{index}][0]"),
_finite_float(point[1], f"{label}.polygon[{index}][1]"),
)
)
if normalized[0] != normalized[-1]:
raise ValueError(f"{label}.polygon ring must be explicitly closed")
from shapely.geometry import Polygon
geometry = Polygon(normalized)
if geometry.is_empty or geometry.area <= 0 or not geometry.is_valid:
raise ValueError(f"{label}.polygon must be non-empty, positive-area and valid")
return geometry
def _validated_polygon_items(
case: dict[str, Any],
) -> tuple[list[dict[str, Any]], list[dict[str, Any]]]:
_validate_metric_spatial_context(case)
references = case.get("references")
predictions = case.get("predictions")
if not isinstance(references, list) or not all(
isinstance(item, dict) for item in references
):
raise ValueError(f"{case['sample_id']}: references must be an object list")
if not isinstance(predictions, list) or not all(
isinstance(item, dict) for item in predictions
):
raise ValueError(f"{case['sample_id']}: predictions must be an object list")
_validate_unique_ids(references, f"{case['sample_id']}.references")
_validate_unique_ids(predictions, f"{case['sample_id']}.predictions")
_validate_labeled_items(case, references, "references")
_validate_labeled_items(case, predictions, "predictions")
validated_references = [
dict(
item,
geometry=_validated_polygon(
item, f"{case['sample_id']}.references[{index}]"
),
)
for index, item in enumerate(references)
]
validated_predictions = [
dict(
item,
geometry=_validated_polygon(
item, f"{case['sample_id']}.predictions[{index}]"
),
)
for index, item in enumerate(predictions)
]
return validated_references, validated_predictions
def _polygon_overlap(prediction: dict[str, Any], reference: dict[str, Any]) -> float:
intersection = prediction["geometry"].intersection(reference["geometry"]).area
union = prediction["geometry"].union(reference["geometry"]).area
return intersection / union if union > 0 else 0.0
def boundary_f1(prediction, reference, tolerance: float) -> float | None:
predicted_boundary = prediction.boundary
reference_boundary = reference.boundary
predicted_length = predicted_boundary.length
reference_length = reference_boundary.length
if predicted_length <= 0 or reference_length <= 0:
return None
precision = (
predicted_boundary.intersection(reference_boundary.buffer(tolerance)).length
/ predicted_length
)
recall = (
reference_boundary.intersection(predicted_boundary.buffer(tolerance)).length
/ reference_length
)
return f1_score(precision, recall)
def evaluate_footprint_segmentation(case: dict[str, Any]) -> dict[str, Any]:
references, predictions = _validated_polygon_items(case)
match_iou = _probability(
case["config"].get("match_iou"),
f"{case['sample_id']}.config.match_iou",
)
tolerance = _finite_float(
case["config"].get("boundary_tolerance_m"),
f"{case['sample_id']}.config.boundary_tolerance_m",
)
if tolerance <= 0:
raise ValueError(f"{case['sample_id']}: boundary tolerance must be positive")
for index, item in enumerate(predictions):
if "confidence" in item:
_probability(
item["confidence"],
f"{case['sample_id']}.predictions[{index}].confidence",
)
matches, false_positives, false_negatives = greedy_match(
predictions,
references,
_polygon_overlap,
match_iou,
class_aware=True,
)
by_prediction = {item["id"]: item for item in predictions}
by_reference = {item["id"]: item for item in references}
dice = []
boundary = []
centroids = []
area_errors = []
for match in matches:
pred = by_prediction[match["prediction_id"]]["geometry"]
ref = by_reference[match["reference_id"]]["geometry"]
intersection = pred.intersection(ref).area
dice.append(2 * intersection / (pred.area + ref.area))
boundary.append(boundary_f1(pred, ref, tolerance))
centroids.append(pred.centroid.distance(ref.centroid))
area_errors.append((pred.area - ref.area) / ref.area)
metrics = count_metrics(len(matches), len(false_positives), len(false_negatives))
metrics.update(
{
"mean_iou": _mean_or_none([item["overlap"] for item in matches]),
"mean_dice": _mean_or_none(dice),
"mean_boundary_f1": _mean_or_none(boundary),
"centroid_distance_m": distribution(centroids),
"relative_area_error": distribution(area_errors),
"topologically_valid_predictions": len(predictions),
"topologically_invalid_predictions": 0,
"spatial_context_validated": True,
}
)
return result(
case,
metrics,
matches,
false_positives,
false_negatives,
)
def _validate_rectangular_grid(
value: Any,
label: str,
) -> tuple[list[list[Any]], tuple[int, int]]:
if (
not isinstance(value, list)
or not value
or not all(isinstance(row, list) for row in value)
):
raise ValueError(f"{label} must be a non-empty two-dimensional array")
width = len(value[0])
if width <= 0 or any(len(row) != width for row in value):
raise ValueError(f"{label} must be exactly rectangular")
return value, (len(value), width)
def _validate_raster_side(
case: dict[str, Any],
side_name: str,
expected_shape: tuple[int, int],
) -> dict[str, Any]:
context = _nonempty_mapping(
case["raster_context"].get(side_name),
f"{case['sample_id']}.raster_context.{side_name}",
)
required = {"crs", "transform", "shape", "nodata", "mask"}
missing = sorted(required - context.keys())
if missing:
raise ValueError(
f"{case['sample_id']}.raster_context.{side_name} missing {missing}"
)
crs_value = context["crs"]
if not isinstance(crs_value, str) or not crs_value.strip():
raise ValueError(f"{case['sample_id']}: raster CRS must be non-empty")
try:
from pyproj import CRS
normalized_crs = CRS.from_user_input(crs_value)
except Exception as exc: # noqa: BLE001 - invalid CRS must fail closed
raise ValueError(
f"{case['sample_id']}: invalid raster CRS {crs_value!r}"
) from exc
transform = context["transform"]
if not isinstance(transform, list) or len(transform) != 6:
raise ValueError(
f"{case['sample_id']}: raster transform must contain six numbers"
)
normalized_transform = tuple(
_finite_float(
value,
f"{case['sample_id']}.{side_name}.transform[{index}]",
)
for index, value in enumerate(transform)
)
shape = context["shape"]
if (
not isinstance(shape, list)
or len(shape) != 2
or any(
isinstance(value, bool) or not isinstance(value, int) or value <= 0
for value in shape
)
):
raise ValueError(
f"{case['sample_id']}: raster shape must be [positive rows, "
"positive columns]"
)
if tuple(shape) != expected_shape:
raise ValueError(
f"{case['sample_id']}: declared {side_name} shape differs from the grid"
)
mask, mask_shape = _validate_rectangular_grid(
context["mask"],
f"{case['sample_id']}.{side_name}.mask",
)
if mask_shape != expected_shape or any(
not isinstance(value, bool) for row in mask for value in row
):
raise ValueError(
f"{case['sample_id']}: {side_name} mask must be a boolean grid "
"with the exact raster shape"
)
nodata = context["nodata"]
if nodata is not None:
_finite_float(nodata, f"{case['sample_id']}.{side_name}.nodata")
return {
"crs": normalized_crs,
"transform": normalized_transform,
"shape": expected_shape,
"nodata": nodata,
"mask": mask,
}
def _is_nodata(value: Any, nodata: Any) -> bool:
return nodata is not None and value == nodata
def _validate_raster_context(
case: dict[str, Any],
reference_shape: tuple[int, int],
prediction_shape: tuple[int, int],
) -> tuple[dict[str, Any], dict[str, Any]]:
if reference_shape != prediction_shape:
raise ValueError(f"{case['sample_id']}: raster shapes differ")
_nonempty_mapping(
case.get("raster_context"),
f"{case['sample_id']}: raster_context",
)
reference = _validate_raster_side(case, "reference", reference_shape)
prediction = _validate_raster_side(case, "prediction", prediction_shape)
if reference["crs"] != prediction["crs"]:
raise ValueError(f"{case['sample_id']}: raster CRS alignment differs")
if reference["transform"] != prediction["transform"]:
raise ValueError(f"{case['sample_id']}: raster affine alignment differs")
if reference["shape"] != prediction["shape"]:
raise ValueError(f"{case['sample_id']}: raster shape alignment differs")
return reference, prediction
def evaluate_raster_classification(case: dict[str, Any]) -> dict[str, Any]:
classes = _validate_classes(case)
reference_grid, reference_shape = _validate_rectangular_grid(
case.get("references"),
f"{case['sample_id']}.references",
)
prediction_grid, prediction_shape = _validate_rectangular_grid(
case.get("predictions"),
f"{case['sample_id']}.predictions",
)
reference_context, prediction_context = _validate_raster_context(
case,
reference_shape,
prediction_shape,
)
labels = [str(value) for value in classes]
missing_label = "__prediction_nodata__"
confusion = {
reference: {prediction: 0 for prediction in [*labels, missing_label]}
for reference in labels
}
failures = []
evaluated_reference_count = 0
prediction_present_count = 0
ignored_reference_count = 0
prediction_outside_reference_count = 0
correct_count = 0
for row_index in range(reference_shape[0]):
for column_index in range(reference_shape[1]):
reference_value = reference_grid[row_index][column_index]
prediction_value = prediction_grid[row_index][column_index]
reference_valid = reference_context["mask"][row_index][column_index]
prediction_valid = prediction_context["mask"][row_index][column_index]
if reference_valid and _is_nodata(
reference_value, reference_context["nodata"]
):
raise ValueError(
f"{case['sample_id']}: reference mask marks nodata as "
f"valid at [{row_index}, {column_index}]"
)
if prediction_valid and _is_nodata(
prediction_value, prediction_context["nodata"]
):
raise ValueError(
f"{case['sample_id']}: prediction mask marks nodata as "
f"valid at [{row_index}, {column_index}]"
)
if not reference_valid:
ignored_reference_count += 1
if prediction_valid:
prediction_outside_reference_count += 1
continue
if reference_value not in classes:
raise ValueError(
f"{case['sample_id']}: reference class outside ontology "
f"at [{row_index}, {column_index}]"
)
evaluated_reference_count += 1
reference_key = str(reference_value)
if not prediction_valid:
confusion[reference_key][missing_label] += 1
failures.append(
{
"pixel_index": row_index * reference_shape[1] + column_index,
"row": row_index,
"column": column_index,
"reference": reference_value,
"prediction": None,
"reason": "prediction_masked_or_nodata",
}
)
continue
if prediction_value not in classes:
raise ValueError(
f"{case['sample_id']}: prediction class outside ontology "
f"at [{row_index}, {column_index}]"
)
prediction_present_count += 1
prediction_key = str(prediction_value)
confusion[reference_key][prediction_key] += 1
if reference_value == prediction_value:
correct_count += 1
else:
failures.append(
{
"pixel_index": row_index * reference_shape[1] + column_index,
"row": row_index,
"column": column_index,
"reference": reference_value,
"prediction": prediction_value,
"reason": "class_mismatch",
}
)
per_class = {}
for class_value in classes:
class_key = str(class_value)
tp = confusion[class_key][class_key]
fp = sum(
confusion[str(other)][class_key]
for other in classes
if other != class_value
)
fn = sum(
confusion[class_key][prediction]
for prediction in [*labels, missing_label]
if prediction != class_key
)
values = count_metrics(tp, fp, fn)
values["iou"] = safe_rate(tp, tp + fp + fn)
per_class[class_key] = values
metrics = {
"pixel_count": reference_shape[0] * reference_shape[1],
"evaluated_reference_pixel_count": evaluated_reference_count,
"prediction_present_pixel_count": prediction_present_count,
"ignored_reference_pixel_count": ignored_reference_count,
"prediction_outside_reference_count": (prediction_outside_reference_count),
"correct_pixel_count": correct_count,
"prediction_coverage": safe_rate(
prediction_present_count,
evaluated_reference_count,
),
"prediction_coverage_ci95_wilson": wilson_interval(
prediction_present_count,
evaluated_reference_count,
),
"accuracy": safe_rate(correct_count, evaluated_reference_count),
"accuracy_ci95_wilson": wilson_interval(
correct_count,
evaluated_reference_count,
),
"mean_iou": _mean_or_none([value["iou"] for value in per_class.values()]),
"macro_f1": _mean_or_none([value["f1"] for value in per_class.values()]),
"per_class": per_class,
"confusion_matrix": confusion,
"alignment_validated": True,
}
return result(case, metrics, [], failures, [])
def evaluate_vector_comparison(case: dict[str, Any]) -> dict[str, Any]:
references, predictions = _validated_polygon_items(case)
match_iou = _probability(
case["config"].get("match_iou"),
f"{case['sample_id']}.config.match_iou",
)
matches, false_positives, false_negatives = greedy_match(
predictions,
references,
_polygon_overlap,
match_iou,
class_aware=True,
)
metrics = count_metrics(len(matches), len(false_positives), len(false_negatives))
metrics.update(
{
"mean_iou": _mean_or_none([item["overlap"] for item in matches]),
"topologically_valid": True,
"spatial_context_validated": True,
}
)
return result(case, metrics, matches, false_positives, false_negatives)
def evaluate_change_detection(case: dict[str, Any]) -> dict[str, Any]:
references, predictions = _validate_detection_case(case)
match_iou = _probability(
case["config"].get("match_iou"),
f"{case['sample_id']}.config.match_iou",
)
matches = []
false_positives = []
false_negatives = []
event_metrics = {}
for event in case["classes"]:
event_predictions = [item for item in predictions if item["class"] == event]
event_references = [item for item in references if item["class"] == event]
event_matches, event_fp, event_fn = greedy_match(
event_predictions,
event_references,
lambda prediction, reference: bbox_iou(
prediction["bbox"], reference["bbox"]
),
match_iou,
class_aware=True,
)
matches.extend(dict(item, event=event) for item in event_matches)
false_positives.extend(event_fp)
false_negatives.extend(event_fn)
event_metrics[str(event)] = count_metrics(
len(event_matches), len(event_fp), len(event_fn)
)
metrics = count_metrics(len(matches), len(false_positives), len(false_negatives))
metrics["event_metrics"] = event_metrics
return result(case, metrics, matches, false_positives, false_negatives)
def evaluate_terrain(case: dict[str, Any]) -> dict[str, Any]:
references = case.get("references")
predictions = case.get("predictions")
if not isinstance(references, list) or not isinstance(predictions, list):
raise ValueError(f"{case['sample_id']}: terrain inputs must be lists")
if len(references) != len(predictions):
raise ValueError(f"{case['sample_id']}: terrain vector lengths differ")
units = case.get("units")
if not isinstance(units, str) or not units.strip():
raise ValueError(f"{case['sample_id']}: terrain units must be explicit")
normalized_references = [
_finite_float(value, f"{case['sample_id']}.references[{index}]")
for index, value in enumerate(references)
]
normalized_predictions: list[float | None] = []
for index, value in enumerate(predictions):
normalized_predictions.append(
None
if value is None
else _finite_float(
value,
f"{case['sample_id']}.predictions[{index}]",
)
)
pairs = [
(reference, prediction)
for reference, prediction in zip(
normalized_references,
normalized_predictions,
strict=True,
)
if prediction is not None
]
errors = [prediction - reference for reference, prediction in pairs]
missing = [
index for index, value in enumerate(normalized_predictions) if value is None
]
metrics = {
"units": units,
"reference_count": len(normalized_references),
"evaluated_count": len(pairs),
"missing_count": len(missing),
"coverage": safe_rate(len(pairs), len(normalized_references)),
"coverage_ci95_wilson": wilson_interval(len(pairs), len(normalized_references)),
"mae": _mean_or_none([abs(value) for value in errors]),
"rmse": (
math.sqrt(mean(value * value for value in errors)) if errors else None
),
"bias": _mean_or_none(errors),
"error_sum": sum(errors),
"absolute_error_sum": sum(abs(value) for value in errors),
"squared_error_sum": sum(value * value for value in errors),
"error_distribution": distribution(errors),
}
return result(
case,
metrics,
[],
[],
[{"missing_index": index} for index in missing],
)
def _normalized_anomalies(
case: dict[str, Any],
field: str,
) -> list[dict[str, str]]:
values = case.get(field)
if not isinstance(values, list):
raise ValueError(f"{case['sample_id']}: {field} must be a list")
normalized = []
for index, value in enumerate(values):
if not isinstance(value, dict):
raise ValueError(
f"{case['sample_id']}: {field}[{index}] must include code and severity"
)
code = value.get("code")
severity = value.get("severity")
if not isinstance(code, str) or not code.strip():
raise ValueError(f"{case['sample_id']}: {field}[{index}].code is invalid")
if severity not in VALID_ANOMALY_SEVERITIES:
raise ValueError(
f"{case['sample_id']}: {field}[{index}].severity is invalid"
)
normalized.append({"code": code, "severity": severity})
codes = [item["code"] for item in normalized]
duplicates = sorted({code for code in codes if codes.count(code) > 1})
if duplicates:
raise ValueError(f"{case['sample_id']}: duplicate {field} codes {duplicates}")
return normalized
def evaluate_validation(case: dict[str, Any]) -> dict[str, Any]:
expected_items = _normalized_anomalies(case, "expected_anomalies")
observed_items = _normalized_anomalies(case, "observed_anomalies")
expected = {item["code"]: item for item in expected_items}
observed = {item["code"]: item for item in observed_items}
matched_codes = sorted(expected.keys() & observed.keys())
false_positive_codes = sorted(observed.keys() - expected.keys())
false_negative_codes = sorted(expected.keys() - observed.keys())
matched = [
{
"anomaly": code,
"expected_severity": expected[code]["severity"],
"observed_severity": observed[code]["severity"],
}
for code in matched_codes
]
false_positives = [
{"anomaly": code, "severity": observed[code]["severity"]}
for code in false_positive_codes
]
false_negatives = [
{"anomaly": code, "severity": expected[code]["severity"]}
for code in false_negative_codes
]
metrics = count_metrics(len(matched), len(false_positives), len(false_negatives))
metrics["blocker_or_critical_miss_count"] = sum(
item["severity"] in {"blocker", "critical"} for item in false_negatives
)
metrics["misses_by_severity"] = {
severity: sum(item["severity"] == severity for item in false_negatives)
for severity in sorted(VALID_ANOMALY_SEVERITIES)
}
return result(case, metrics, matched, false_positives, false_negatives)
def _case_payload_fields(case: dict[str, Any]) -> tuple[str, str]:
if case["task"] == "geospatial_data_validation":
return "expected_anomalies", "observed_anomalies"
return "references", "predictions"
def result(
case: dict[str, Any],
metrics: dict[str, Any],
matches: list[dict[str, Any]],
false_positives: list[dict[str, Any]],
false_negatives: list[dict[str, Any]],
*,
post_filter_predictions: Any | None = None,
filter_description: dict[str, Any] | None = None,
) -> dict[str, Any]:
reference_field, prediction_field = _case_payload_fields(case)
exact_references = serializable(case[reference_field])
exact_predictions = serializable(case[prediction_field])
post_filter = (
exact_predictions
if post_filter_predictions is None
else serializable(post_filter_predictions)
)
case_hash = canonical_hash(case)
raw = {
"sample_id": case["sample_id"],
"task": case["task"],
"metadata": serializable(case["metadata"]),
"split": case["split"],
"config": serializable(case["config"]),
"input_lineage": serializable(case["lineage"]),
"reference_input_field": reference_field,
"prediction_input_field": prediction_field,
"references": exact_references,
"predictions_pre_filter": exact_predictions,
"predictions_post_filter": post_filter,
"filter": filter_description or {"applied": False},
"matches": serializable(matches),
"false_positives": serializable(false_positives),
"false_negatives": serializable(false_negatives),
"input_sha256": case_hash,
"hashes": {
"case_input_canonical_json_sha256": case_hash,
"references_canonical_json_sha256": canonical_hash(exact_references),
"predictions_pre_filter_canonical_json_sha256": canonical_hash(
exact_predictions
),
"predictions_post_filter_canonical_json_sha256": canonical_hash(
post_filter
),
"canonicalization": CANONICAL_JSON_SPEC,
},
}
failures = []
for item in raw["false_positives"]:
failures.append(failure_entry(case, "false_positive", item))
for item in raw["false_negatives"]:
failures.append(failure_entry(case, "false_negative", item))
return {
"sample_id": case["sample_id"],
"task": case["task"],
"metadata": serializable(case["metadata"]),
"metrics": metrics,
"raw": raw,
"failures": failures,
}
def serializable(value: Any) -> Any:
if isinstance(value, dict):
return {
key: serializable(item) for key, item in value.items() if key != "geometry"
}
if isinstance(value, list):
return [serializable(item) for item in value]
if isinstance(value, tuple):
return [serializable(item) for item in value]
return value
def failure_entry(
case: dict[str, Any], kind: str, evidence: dict[str, Any]
) -> dict[str, Any]:
if case["task"] == "change_detection":
kind = (
"event_false_positive"
if kind == "false_positive"
else "event_false_negative"
)
elif case["task"] == "geospatial_data_validation":
kind = (
"validation_false_positive"
if kind == "false_positive"
else "validation_false_negative"
)
elif case["task"] == "terrain_interpretation":
kind = "terrain_missing"
return {
"failure_id": canonical_hash(
{
"sample_id": case["sample_id"],
"kind": kind,
"evidence": serializable(evidence),
}
)[:20],
"sample_id": case["sample_id"],
"task": case["task"],
"error_code": ERROR_CODES[kind],
"kind": kind,
"metadata": case["metadata"],
"evidence": serializable(evidence),
}
EVALUATORS: dict[str, Callable[[dict[str, Any]], dict[str, Any]]] = {
"object_detection": evaluate_object_detection,
"footprint_segmentation": evaluate_footprint_segmentation,
"raster_classification": evaluate_raster_classification,
"vector_comparison": evaluate_vector_comparison,
"change_detection": evaluate_change_detection,
"terrain_interpretation": evaluate_terrain,
"geospatial_data_validation": evaluate_validation,
}
def _capability(
capability_id: str,
task: str,
implementation_paths: list[str],
implementation_kind: str,
evaluation_status: str,
suitable_metrics: list[str],
) -> dict[str, Any]:
return {
"capability_id": capability_id,
"task": task,
"implementation_paths": implementation_paths,
"implementation_kind": implementation_kind,
"evaluation_status": evaluation_status,
"suitable_metrics": suitable_metrics,
"claim_boundary": (
"A family mapping is not evidence that this capability has a "
"separate representative product benchmark."
),
}
def task_inventory() -> list[dict[str, Any]]:
"""Map concrete capabilities to evaluator families without overclaiming."""
synthetic = "synthetic_contract_case_only"
covered = "covered_by_family_not_separately_benchmarked"
separate = "not_separately_benchmarked"
return [
_capability(
"model_object_detection",
"object_detection",
["backend/app/services/detection_service.py"],
"model_inference_pipeline",
synthetic,
[
"precision",
"recall",
"F1",
"AP50",
"AP50-95",
"IoU",
"ECE",
"Brier",
"coverage-risk",
],
),
_capability(
"building_proposal_filtering",
"object_detection",
[
"scripts/train_building_proposal_classifier.py",
"scripts/evaluate_belgium_building_candidate.py",
],
"supporting_candidate_classifier",
separate,
["candidate precision", "candidate recall", "F1", "calibration"],
),
_capability(
"footprint_segmentation",
"footprint_segmentation",
[
"backend/app/services/segmentation_service.py",
"backend/app/services/segmentation_adapter.py",
],
"model_inference_pipeline",
synthetic,
[
"object precision",
"object recall",
"F1",
"IoU",
"Dice",
"boundary F1",
"centroid distance",
"area error",
"topology",
],
),
_capability(
"detection_and_vector_qa",
"vector_comparison",
[
"backend/app/services/qa_service.py",
"backend/app/services/detection_qa_service.py",
"backend/app/services/quality_check_service.py",
],
"deterministic_geospatial_comparison",
synthetic,
["precision", "recall", "F1", "IoU", "topology", "coverage"],
),
_capability(
"vector_clip_buffer_intersect",
"vector_comparison",
[
"backend/app/services/vector_operations_service.py",
"backend/app/services/vector_feature_service.py",
],
"deterministic_vector_processing",
covered,
[
"geometry validity",
"CRS correctness",
"area conservation",
"feature counts",
"topology",
],
),
_capability(
"temporal_vector_change",
"change_detection",
["backend/app/services/change_detection_service.py"],
"deterministic_change_detection",
synthetic,
["event precision", "event recall", "event F1", "IoU"],
),
_capability(
"thematic_raster_interpretation",
"raster_classification",
["backend/app/services/thematic_raster_analysis_service.py"],
"deterministic_source_interpretation",
"synthetic_metric_contract_only_no_generic_learned_classifier_claim",
["pixel accuracy", "per-class F1", "per-class IoU", "mean IoU"],
),
_capability(
"raster_clip_reproject_indices",
"raster_classification",
[
"backend/app/services/raster_service.py",
"backend/app/services/raster_operations_service.py",
],
"deterministic_raster_processing",
covered,
[
"CRS/transform preservation",
"pixel alignment",
"nodata",
"numeric tolerance",
],
),
_capability(
"raster_partition_mosaic",
"raster_classification",
["backend/app/services/raster_partition_analysis_service.py"],
"deterministic_raster_partitioning",
separate,
["seam equality", "coverage completeness", "resolution consistency"],
),
_capability(
"terrain_height_interpretation",
"terrain_interpretation",
[
"backend/app/services/terrain_analysis_service.py",
"backend/app/services/spw_terrain_service.py",
],
"deterministic_continuous_raster_analysis",
synthetic,
["MAE", "RMSE", "bias", "coverage", "unit integrity"],
),
_capability(
"flood_hazard_interpretation",
"terrain_interpretation",
["backend/app/services/flood_hazard_analysis_service.py"],
"deterministic_scenario_raster_analysis",
covered,
["depth MAE/RMSE", "hazard-class IoU", "coverage", "scenario identity"],
),
_capability(
"bathymetry_interpretation",
"terrain_interpretation",
[
"backend/app/services/bathymetry_raster_analysis_service.py",
"backend/app/services/mdk_bathymetry_probe_service.py",
],
"deterministic_vertical_reference_analysis",
covered,
["MAE", "RMSE", "bias", "coverage", "vertical-datum integrity"],
),
_capability(
"data_contract_validation_and_scan",
"geospatial_data_validation",
[
"backend/app/services/data_contract_validation.py",
"scripts/run_accuracy_phase3_full_data_scan.py",
],
"deterministic_validation",
synthetic,
["anomaly precision", "anomaly recall", "anomaly F1", "critical misses"],
),
_capability(
"aoi_partition_orchestration",
"geospatial_data_validation",
[
"backend/app/services/aoi_operation_service.py",
"backend/app/services/aoi_operation_executor.py",
"backend/app/services/aoi_operation_worker.py",
],
"deterministic_orchestration",
separate,
[
"partition completeness",
"overlap/gap",
"idempotency",
"resume correctness",
],
),
_capability(
"geo_assistant_orchestration",
"geospatial_data_validation",
["backend/app/services/geo_assistant_service.py"],
"tool_orchestration_interface",
"no_independent_accuracy_score_underlying_tool_results_are_authoritative",
["tool-selection correctness", "grounding", "unsupported-claim rate"],
),
]
def _numeric_metric(metrics: dict[str, Any], key: str) -> float | None:
value = metrics.get(key)
if isinstance(value, bool) or not isinstance(value, (int, float)):
return None
converted = float(value)
return converted if math.isfinite(converted) else None
def _macro_metrics(
values: list[dict[str, Any]],
keys: Iterable[str],
) -> dict[str, Any]:
output: dict[str, Any] = {
"status": "computed",
"method": "unweighted mean across cases with defined values",
}
computed = 0
for key in keys:
items = [
value
for metrics in values
if (value := _numeric_metric(metrics, key)) is not None
]
output[key] = mean(items) if items else None
output[f"{key}_case_support"] = len(items)
computed += bool(items)
if not computed:
output["status"] = "not_evaluable"
return output
def _aggregate_count_family(
values: list[dict[str, Any]],
extra_macro_keys: Iterable[str] = (),
) -> dict[str, Any]:
metrics = [item["metrics"] for item in values]
micro = count_metrics(
sum(int(item["true_positive"]) for item in metrics),
sum(int(item["false_positive"]) for item in metrics),
sum(int(item["false_negative"]) for item in metrics),
)
return {
"micro": micro,
"macro": _macro_metrics(
metrics,
("precision", "recall", "f1", *extra_macro_keys),
),
"observation_support": {
"references": sum(int(item["reference_count"]) for item in metrics),
"predictions": sum(int(item["prediction_count"]) for item in metrics),
},
"primary_metric": {
"name": "micro.f1",
"value": micro["f1"],
"direction": "higher_is_better",
},
}
def _aggregate_raster(values: list[dict[str, Any]]) -> dict[str, Any]:
metrics = [item["metrics"] for item in values]
class_counts: dict[str, dict[str, int]] = defaultdict(
lambda: {"tp": 0, "fp": 0, "fn": 0}
)
for item in metrics:
for class_name, class_metrics in item["per_class"].items():
class_counts[class_name]["tp"] += int(class_metrics["true_positive"])
class_counts[class_name]["fp"] += int(class_metrics["false_positive"])
class_counts[class_name]["fn"] += int(class_metrics["false_negative"])
per_class = {}
for class_name, counts in sorted(class_counts.items()):
class_metrics = count_metrics(counts["tp"], counts["fp"], counts["fn"])
class_metrics["iou"] = safe_rate(
counts["tp"],
counts["tp"] + counts["fp"] + counts["fn"],
)
per_class[class_name] = class_metrics
evaluated = sum(int(item["evaluated_reference_pixel_count"]) for item in metrics)
present = sum(int(item["prediction_present_pixel_count"]) for item in metrics)
correct = sum(int(item["correct_pixel_count"]) for item in metrics)
micro = {
"evaluated_reference_pixel_count": evaluated,
"prediction_present_pixel_count": present,
"correct_pixel_count": correct,
"accuracy": safe_rate(correct, evaluated),
"accuracy_ci95_wilson": wilson_interval(correct, evaluated),
"prediction_coverage": safe_rate(present, evaluated),
"prediction_coverage_ci95_wilson": wilson_interval(present, evaluated),
"mean_iou": _mean_or_none([item["iou"] for item in per_class.values()]),
"macro_f1_across_classes": _mean_or_none(
[item["f1"] for item in per_class.values()]
),
"per_class": per_class,
}
return {
"micro": micro,
"macro": _macro_metrics(
metrics,
("accuracy", "mean_iou", "macro_f1"),
),
"observation_support": {"evaluated_pixels": evaluated},
"primary_metric": {
"name": "micro.mean_iou",
"value": micro["mean_iou"],
"direction": "higher_is_better",
},
}
def _aggregate_terrain(values: list[dict[str, Any]]) -> dict[str, Any]:
metrics = [item["metrics"] for item in values]
units = sorted({str(item["units"]) for item in metrics})
references = sum(int(item["reference_count"]) for item in metrics)
evaluated = sum(int(item["evaluated_count"]) for item in metrics)
if len(units) != 1:
return {
"micro": {"status": "not_evaluable", "reason": "mixed units"},
"macro": {"status": "not_evaluable", "reason": "mixed units"},
"observation_support": {"references": references},
"primary_metric": {
"name": "micro.rmse",
"value": None,
"direction": "lower_is_better",
},
}
absolute_error_sum = sum(float(item["absolute_error_sum"]) for item in metrics)
squared_error_sum = sum(float(item["squared_error_sum"]) for item in metrics)
error_sum = sum(float(item["error_sum"]) for item in metrics)
micro = {
"status": "computed" if evaluated else "not_evaluable",
"units": units[0],
"reference_count": references,
"evaluated_count": evaluated,
"coverage": safe_rate(evaluated, references),
"coverage_ci95_wilson": wilson_interval(evaluated, references),
"mae": safe_rate(absolute_error_sum, evaluated),
"rmse": (math.sqrt(squared_error_sum / evaluated) if evaluated else None),
"bias": safe_rate(error_sum, evaluated),
}
return {
"micro": micro,
"macro": _macro_metrics(
metrics,
("coverage", "mae", "rmse", "bias"),
),
"observation_support": {
"references": references,
"evaluated": evaluated,
},
"primary_metric": {
"name": "micro.rmse",
"value": micro["rmse"],
"direction": "lower_is_better",
},
}
def _aggregate_task(values: list[dict[str, Any]]) -> dict[str, Any]:
task = values[0]["task"]
if task == "raster_classification":
aggregation = _aggregate_raster(values)
elif task == "terrain_interpretation":
aggregation = _aggregate_terrain(values)
else:
extras = {
"object_detection": ("ap50", "ap50_95"),
"footprint_segmentation": (
"mean_iou",
"mean_dice",
"mean_boundary_f1",
),
"vector_comparison": ("mean_iou",),
"change_detection": (),
"geospatial_data_validation": ("blocker_or_critical_miss_count",),
}[task]
aggregation = _aggregate_count_family(values, extras)
if task == "geospatial_data_validation":
aggregation["micro"]["blocker_or_critical_miss_count"] = sum(
int(item["metrics"]["blocker_or_critical_miss_count"])
for item in values
)
case_support = len(values)
status = (
"evaluable"
if case_support >= SUBGROUP_MIN_CASE_SUPPORT
and aggregation["primary_metric"]["value"] is not None
else "insufficient_support"
)
return {
"case_support": case_support,
"minimum_case_support": SUBGROUP_MIN_CASE_SUPPORT,
"status": status,
"release_gate_status": "not_evaluable",
"release_gate_reason": (
"insufficient_support"
if status == "insufficient_support"
else "no_frozen_release_target"
),
**aggregation,
}
def _stratum_key(value: Any) -> str:
return "__not_applicable__" if value is None else str(value)
def _worst_stratum_by_task(strata: dict[str, Any]) -> dict[str, Any]:
tasks = sorted(
{task for stratum in strata.values() for task in stratum["task_metrics"]}
)
output = {}
for task in tasks:
candidates = []
for stratum_name, stratum in strata.items():
task_metrics = stratum["task_metrics"].get(task)
if not task_metrics or task_metrics["status"] != "evaluable":
continue
primary = task_metrics["primary_metric"]
if primary["value"] is not None:
candidates.append((stratum_name, primary))
if not candidates:
output[task] = {
"status": "not_evaluable",
"reason": (
"no stratum meets minimum support with a defined primary metric"
),
}
continue
direction = candidates[0][1]["direction"]
selected = (
min(candidates, key=lambda item: (item[1]["value"], item[0]))
if direction == "higher_is_better"
else max(
candidates,
key=lambda item: (item[1]["value"], item[0]),
)
)
output[task] = {
"status": "computed",
"stratum": selected[0],
"primary_metric": selected[1],
}
return output
def subgroup_report(results: list[dict[str, Any]]) -> dict[str, Any]:
dimensions = (
"region",
"municipality",
"urbanity",
"object_size",
"source",
"sensor",
"resolution_m",
"season",
"date",
"vegetation",
"occlusion",
"difficulty",
)
dimension_reports = {}
any_insufficient = False
for dimension in dimensions:
groups: dict[str, list[dict[str, Any]]] = defaultdict(list)
for item in results:
groups[_stratum_key(item["metadata"].get(dimension))].append(item)
strata = {}
for key, values in sorted(groups.items()):
per_task: dict[str, list[dict[str, Any]]] = defaultdict(list)
for value in values:
per_task[value["task"]].append(value)
task_metrics = {
task: _aggregate_task(task_values)
for task, task_values in sorted(per_task.items())
}
insufficient = any(
item["status"] == "insufficient_support"
for item in task_metrics.values()
)
any_insufficient = any_insufficient or insufficient
strata[key] = {
"case_support": len(values),
"tasks": sorted(per_task),
"failure_count": sum(len(value["failures"]) for value in values),
"task_metrics": task_metrics,
"release_gate_status": "not_evaluable",
"release_gate_reason": "insufficient_support"
if insufficient
else "no_frozen_release_target",
}
dimension_reports[dimension] = {
"strata": strata,
"worst_stratum_by_task": _worst_stratum_by_task(strata),
}
return {
"schema_version": REPORT_SCHEMA_VERSION,
"minimum_case_support": SUBGROUP_MIN_CASE_SUPPORT,
"support_unit": (
"independent benchmark cases; pixel/object counts are reported "
"separately and do not replace case support"
),
"overall_status": (
"not_evaluable" if any_insufficient else "evaluable_no_release_target"
),
"dimensions": dimension_reports,
}
def evaluate_cases(path: Path, allowed_sample_ids: set[str]) -> dict[str, Any]:
file_hash = file_sha256(path)
portfolio = json.loads(path.read_text(encoding="utf-8"))
if not isinstance(portfolio, dict):
raise ValueError("The evaluation portfolio must be a JSON object")
claim_boundary = portfolio.get("claim_boundary")
if not isinstance(claim_boundary, str) or (
"synthetic" not in claim_boundary.lower()
):
raise ValueError(
"The portfolio claim boundary must explicitly state that it is synthetic"
)
split_roles = portfolio.get("split_roles")
if split_roles not in (["test"], ["test", "background-test"]):
raise ValueError(
"split_roles must be exactly ['test'] or ['test', 'background-test']"
)
if "challenge_cases" in portfolio or "challenge_labels" in portfolio:
raise ValueError("Challenge cases and labels must remain sealed and absent")
selection_policy = portfolio.get("selection_policy")
if not isinstance(selection_policy, str) or not selection_policy.strip():
raise ValueError("The portfolio requires an explicit selection policy")
declared_portfolio_lineage = _nonempty_mapping(
portfolio.get("portfolio_lineage"),
"portfolio_lineage",
)
for field in ("origin", "source_path", "version"):
value = declared_portfolio_lineage.get(field)
if not isinstance(value, str) or not value.strip():
raise ValueError(f"portfolio_lineage.{field} must be a non-empty string")
cases = portfolio.get("cases")
if not isinstance(cases, list) or not all(isinstance(item, dict) for item in cases):
raise ValueError("The portfolio cases must be an object list")
for case in cases:
if case.get("split") not in split_roles:
raise ValueError(
f"{case['sample_id']}: split must be one of {split_roles}; "
"challenge remains sealed"
)
_validate_case_common(case)
identifiers = [item["sample_id"] for item in cases]
duplicates = sorted(
{identifier for identifier in identifiers if identifiers.count(identifier) > 1}
)
if duplicates:
raise ValueError(f"Duplicate protected case ids: {duplicates}")
case_ids = set(identifiers)
unexpected = sorted(case_ids - allowed_sample_ids)
missing = sorted(allowed_sample_ids - case_ids)
if unexpected or missing:
raise ValueError(
"Protected case identity mismatch: "
f"unexpected={unexpected}, missing={missing}"
)
portfolio_canonical_hash = canonical_hash(portfolio)
results = [
EVALUATORS[item["task"]](item)
for item in sorted(cases, key=lambda item: item["sample_id"])
]
portfolio_lineage = {
"declared": serializable(declared_portfolio_lineage),
"portfolio_id": portfolio.get("portfolio_id"),
"portfolio_schema_version": portfolio.get("schema_version"),
"portfolio_file_sha256": file_hash,
"portfolio_canonical_json_sha256": portfolio_canonical_hash,
"source_path": declared_portfolio_lineage["source_path"],
"split_roles": list(split_roles),
"claim_boundary": claim_boundary,
}
for item in results:
item["raw"]["portfolio_lineage"] = portfolio_lineage
failures = sorted(
(failure for item in results for failure in item["failures"]),
key=lambda item: item["failure_id"],
)
results_hash = canonical_hash(results)
return {
"schema_version": REPORT_SCHEMA_VERSION,
"evaluator_version": EVALUATOR_VERSION,
"portfolio_id": portfolio["portfolio_id"],
"portfolio_file_sha256": file_hash,
"portfolio_canonical_json_sha256": portfolio_canonical_hash,
"claim_boundary": claim_boundary,
"selection_policy": selection_policy,
"split_roles": list(split_roles),
"protected_policy": serializable(portfolio.get("protected_policy")),
"hash_specification": {
"algorithm": "SHA-256",
"canonical_json": CANONICAL_JSON_SPEC,
"portfolio_file_sha256_input": "exact source-file bytes",
"portfolio_canonical_json_sha256_input": ("parsed complete portfolio"),
"results_canonical_json_sha256_input": (
"complete sample-id-ordered results array"
),
},
"task_inventory": task_inventory(),
"evaluated_task_families": sorted({item["task"] for item in results}),
"task_count": len({item["task"] for item in results}),
"case_count": len(results),
"results": results,
"subgroups": subgroup_report(results),
"failures": failures,
"results_canonical_json_sha256": results_hash,
}