Blind DCA Classifier -- Results

Narrative -> DCA code | MiniMax-M2.7 | temp=0 | 551 records | 81-code taxonomy

F1 FINDING 83 of 551 records (15.1% hallucination or parse failures) are excluded from valid accuracy. Valid denominator = 468.
22.5%
Top-1 Accuracy
124/551 all records
26.5%
Top-1 (valid)
124/468 valid predictions only
42.6%
Top-3 (all)
235/551 all records
50.2%
Top-3 (valid)
235/468 valid predictions only
83
Failures
off-taxonomy or parse failure
427
Disagreements
LLM vs coder, arg-case supported

Per-decade accuracy (all 551 records)

100s - Pedestrian22.9% (8/35)
110s - Cross Traffic / Intersection41.7% (35/84)
120s - Head-on / Opposing8.2% (6/73)
130s - Rear-end / Same direction34.0% (51/150)
140s - U-turn / Manoeuvring0.0% (0/29)
150s - Overtaking0.0% (0/9)
160s - Parked vehicle / Object14.7% (5/34)
170s - Off carriageway (straight)16.0% (15/94)
180s - Off carriageway (bend)0.0% (0/35)
190s - Other / Misc50.0% (4/8)

Top confusion pairs (valid predictions only)

Actual -> PredictedCountPredicted description
121 -> 11042CROSS TRAFFIC(INTERSECTIONS ONLY)
130 -> 11030CROSS TRAFFIC(INTERSECTIONS ONLY)
113 -> 11021CROSS TRAFFIC(INTERSECTIONS ONLY)
120 -> 13011REAR END(VEHICLES IN SAME LANE)
160 -> 13011REAR END(VEHICLES IN SAME LANE)
147 -> 1309REAR END(VEHICLES IN SAME LANE)
132 -> 1108CROSS TRAFFIC(INTERSECTIONS ONLY)
130 -> 1206HEAD ON (NOT OVERTAKING)
131 -> 1105CROSS TRAFFIC(INTERSECTIONS ONLY)
171 -> 1755OFF END OF ROAD/T-INTERSECTION.