{ "d5": { "rows": 4000, "positions": 339326, "mid_token_positions": 199326, "mid_token_fraction": 0.5874174098064988, "jsd_mid_median": 0.6931471672045528, "jsd_mid_p95": 0.6931471805599454, "jsd_lt_.005_fraction": 0.009913408185585422, "gold_byte_argmax_rate": 0.8921803811084326, "dropped_mass_median": 1.1812154835758568e-07, "dropped_mass_p95": 0.7010381780887871, "a0_fixtures": null, "sparse_conditional": "E:\\mirel\\data\\btx_e003\\byte_conditional_top16_d5.npz" }, "sub3": { "rows": 4050, "positions": 11244, "mid_token_positions": 0, "mid_token_fraction": 0.0, "jsd_mid_median": 0.0, "jsd_mid_p95": 0.0, "jsd_lt_.005_fraction": 1.0, "gold_byte_argmax_rate": 0.9874599786552828, "dropped_mass_median": 1.1321480164005255e-19, "dropped_mass_p95": 8.258072338711938e-14, "a0_fixtures": "140/140", "sparse_conditional": "E:\\mirel\\data\\btx_e003\\byte_conditional_top16_sub3.npz" }, "gate_note": "The multi-byte form is exact within a token from the top-64; off-gold re-entry (a shorter token ending inside the gold token) is DISCLOSED as dropped mass, not beamed (the Vieira beam needs extra teacher forwards; owed). At token boundaries the gold-path next byte is the next position's first byte. The JSD gate is scored at mid-token positions only (k >= 1); where mid_token_fraction ~ 0 (sub3 digits: Qwen2.5 has no ASCII multi-digit tokens) channel 1 is LABEL-CLASS.", "gate_pass_d5": false }