Colorizer round6: checkpoint 500

experiments/final-20260928/realism_low_v2/SHA256SUMS.json

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   "final_train.py": "24a2541f35a494b1630cffc38bffdd166e76e960a753b07fdd6acb15bed28a8d",
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 }

experiments/final-20260928/realism_low_v2/history.json

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experiments/final-20260928/realism_low_v2/status.json

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+  "elapsed_seconds": 92.338183431
+}

experiments/final-20260928/realism_low_v2/step_00500/README.md

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+# Experimental semantic colorizer
+
+Head: palette. Parameters: 3994676.
+
+Not approved for production. Requires semantic_model.py; incompatible with the old U-Net loader. Input is Lab lightness normalized to [-1,1]; output is Lab ab. See the run protocol, provenance, selection and visual comparisons. Predictions are plausible colors, not recovered historical truth.

experiments/final-20260928/realism_low_v2/step_00500/config.json

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+{
+  "architecture": "SemanticColorizer",
+  "head": "palette",
+  "width": 128,
+  "queries": 16,
+  "format_version": 1
+}

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