{"schema_version":"v1","type":"per_stock_model_accuracy","ticker":"4438.T","universe":"jp-listed","name":"Ｗｅｌｂｙ","sector":"情報通信・サービスその他","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":0.373,"p75":0.4567,"median":0.4108},"hit_rate_short":{"n":12,"p25":0.8767,"p75":0.9384,"median":0.9049},"avg_return_long_bps":{"n":12,"p25":-101.0605,"p75":26.3281,"median":-29.192},"selection_rate_long":{"n":12,"p25":0.0141,"p75":0.0185,"median":0.0161},"avg_return_short_bps":{"n":12,"p25":545.2474,"p75":683.9782,"median":600.8857},"selection_rate_short":{"n":12,"p25":0.0326,"p75":0.0421,"median":0.04}},"selection_counts":{"n_long_total":3278,"n_short_total":7811,"n_appearances_total":205824},"pnl_contribution":{"long":-6.0412,"short":465.5948,"total":459.5537},"_links":{"self":"https://qbuntu.ai/v1/stocks/4438.T","html":"https://qbuntu.ai/stocks/4438.T","markdown":"https://qbuntu.ai/ai/stocks/4438.T.md"},"license":"CC-BY-4.0"}