{"schema_version":"v1","type":"per_stock_model_accuracy","ticker":"4920.T","universe":"jp-listed","name":"日本色材工業研究所","sector":"素材・化学","computed_asof":"2026-10-01T02:33:09","frame":"Model predictability decomposition: measures how accurately the ml-factor-lgbm-9f-jp-growth model family predicts this stock's returns within the jp-listed universe. High hit_rate_long does NOT mean 'good stock to buy' -- it means 'the model historically predicted this stock well when selecting it LONG'. This is a property of model-stock fit, not intrinsic stock quality.","source_strategy":{"note":"Standalone walk-forward run of the same LightGBM 9-factor family on the jp-listed universe (~4,100 tickers); the referenced record's verdict applies to the jp-growth universe only.","slug":"ml-factor-lgbm-9f-jp-growth","verdict":"marginal","relation":"model_family"},"source_strategy_exists":true,"units":{"pnl_cumul_*":"sum of per-trade decimal returns across all grid combos and retrain periods (0.01 = one trade returning 1%)","hit_rate_long":"ratio [0, 1] -- fraction of LONG selections with positive net return","hit_rate_short":"ratio [0, 1] -- fraction of SHORT selections with positive net return","avg_return_long_bps":"basis points per trade (1 bps = 0.01%) -- average net return when selected LONG","selection_rate_long":"ratio [0, 1] -- fraction of appearances where selected LONG","avg_return_short_bps":"basis points per trade (1 bps = 0.01%) -- average net return when selected SHORT","selection_rate_short":"ratio [0, 1] -- fraction of appearances where selected SHORT"},"accuracy_summary":{"hit_rate_long":{"n":12,"p25":0.4887,"p75":0.8637,"median":0.7744},"hit_rate_short":{"n":12,"p25":0.3765,"p75":0.5674,"median":0.4327},"avg_return_long_bps":{"n":12,"p25":-38.0292,"p75":407.9644,"median":259.8059},"selection_rate_long":{"n":12,"p25":0.0121,"p75":0.0195,"median":0.0169},"avg_return_short_bps":{"n":12,"p25":-421.0845,"p75":-132.796,"median":-240.2362},"selection_rate_short":{"n":12,"p25":0.0131,"p75":0.0222,"median":0.019}},"selection_counts":{"n_long_total":1010,"n_short_total":1187,"n_appearances_total":65280},"pnl_contribution":{"long":18.7867,"short":-30.3006,"total":-11.5139},"_links":{"self":"https://qbuntu.ai/v1/stocks/4920.T","html":"https://qbuntu.ai/stocks/4920.T","markdown":"https://qbuntu.ai/ai/stocks/4920.T.md"},"license":"CC-BY-4.0"}