Target related hard-negative contexts

2026-07-29 18:27:54 +02:00
parent a56df8b1ed
commit cfce3e64ec
4 changed files with 70 additions and 2 deletions
@@ -207,3 +207,35 @@ def test_region_cap_drops_only_repeats_and_preserves_every_unique_tile() -> None
    assert metadata["sampled_entries_by_region"]["flanders"] == 7
    assert metadata["dropped_region_repeat_count"] == 13
    assert metadata["sampled_entries_by_region"]["flanders"] / len(paths) <= .65
+
+
+def test_coastal_precision_failure_targets_port_and_dunes_negatives() -> None:
+    manifest = {"samples": [
+        {"sample_slug": "coastal-train", "split": "train", "region": "flanders", "context": "coastal-urban"},
+        {"sample_slug": "port-negative", "split": "train", "region": "flanders", "context": "port-hard-negative"},
+        {"sample_slug": "dunes-negative", "split": "train", "region": "flanders", "context": "dunes-negative"},
+        {"sample_slug": "coastal-cal", "split": "calibration", "region": "flanders", "context": "coastal-urban"},
+    ]}
+    summary = {"tiles": [
+        {"sample_slug": "coastal-train", "split": "train", "label_count": 2, "image_path": "/tmp/coastal.png"},
+        {"sample_slug": "port-negative", "split": "train", "label_count": 0, "image_path": "/tmp/port.png"},
+        {"sample_slug": "dunes-negative", "split": "train", "label_count": 0, "image_path": "/tmp/dunes.png"},
+    ]}
+    assessment = {
+        "status": "continue_training_loop",
+        "gates": {"min_region_f1": .45, "min_region_precision": .5, "min_region_recall": .4,
+                  "max_pure_empty_false_positives": 0},
+        "calibration": {
+            "regions": {"flanders": {"f1": .3, "precision": .2, "recall": .4}},
+            "samples": {"coastal-cal": {"f1": .1, "precision": .05, "recall": .2}},
+        },
+    }
+
+    paths, metadata = MODULE.build_sampling(
+        summary=summary, manifest=manifest, assessment=assessment, max_region_share=1.0
+    )
+
+    assert paths.count(str(Path("/tmp/port.png").resolve())) == 6
+    assert paths.count(str(Path("/tmp/dunes.png").resolve())) == 6
+    assert "flanders:port-hard-negative" in metadata["targeted_negative_contexts"]
+    assert "flanders:dunes-negative" in metadata["targeted_negative_contexts"]