anti
0737fcfe93
BEHAVE-EXTRACTOR.md Phase B Step B.2. First principled
implementation — the prototype doesn't ship this primitive at all.
* _features/motor.py:motor_stability(ctx) emits one Observation
in {steady, variable, tremor}. Reuses ctx.typing_bursts from B.1.
* Tremor proxy: fraction of within-burst IATs below
TREMOR_FAST_FLOOR_S (30 ms — humans can't sustain sub-50 ms IATs).
≥ TREMOR_RATE_MIN (10%) sub-floor → tremor (double-press / motor
twitch / stuck-key).
* Otherwise median burst CV decides: < CV_STEADY_MAX → steady,
else → variable. Confidence 0.70 / 0.60 / 0.65.
* No typing bursts or fewer than 5 within-burst IATs → skip emit.
* Calibration grid widened to include motor.motor_stability; green
across all five shards.
Tests cover all three buckets + skip paths.
101 lines
5.6 KiB
Python
101 lines
5.6 KiB
Python
"""Numeric thresholds for BEHAVE-SHELL primitive classification.
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Each constant cites its calibration source. When the registry's
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``notes:`` field disagrees with a constant here, the registry is
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authoritative — fix the constant, re-run the calibration grid.
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Empirical thresholds inherited from the BEHAVE prototype extractor
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(``BEHAVE/prototype_extractors/shell/extract.py``); see lines 40-90 of
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that file for the calibration history. Any change here must keep the
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five-class grid green.
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"""
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from __future__ import annotations
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# ── paste-burst detection (Step 1) ──────────────────────────────────────────
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# A single input event with ≥ PASTE_MIN_CHARS_PER_EVENT chars is the
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# paste-class proxy used by the prototype; xterm-kitty / iTerm / VS Code
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# pastes arrive as one bulk write.
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PASTE_MIN_CHARS_PER_EVENT: int = 4
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# Consecutive paste-class events arriving within this IAT collapse into
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# one PasteBurst record. 200ms is the prototype's IKI burst cap.
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PASTE_BURST_MAX_IAT_S: float = 0.20
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# ── motor.input_modality (Step 2) ───────────────────────────────────────────
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# Paste-event ratio thresholds. ≥ 40% paste events → "pasted" (LLM-driven);
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# ≤ 5% → "typed" (human at the keyboard); in between → "mixed".
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# Lowered from 0.5 after the 47.6% case in sessions-2026-05-02-with-llm.jsonl
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# was clearly LLM-driven but missed the 0.5 floor.
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MODALITY_PASTED_MIN: float = 0.40
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MODALITY_TYPED_MAX: float = 0.05
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# ── motor.paste_burst_rate (Step 3) ─────────────────────────────────────────
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# Same paste-event ratio re-bucketed for the "how often does the operator
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# paste" axis. Coarser than input_modality on purpose: this primitive is the
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# habit signal, input_modality is the dominant-channel signal.
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PASTE_RATE_HABITUAL_MIN: float = 0.50
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PASTE_RATE_OCCASIONAL_MIN: float = 0.10
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# ── cognitive.inter_command_latency_class (Step 5) ──────────────────────────
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# Bucket edges (seconds) for the median inter-command IAT. Prototype
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# values; v0.2 splits the original llm_roundtrip 2-8s band into
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# llm_lightweight (orchestrated agents w/ small models / terse prompts) and
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# llm_heavyweight (reasoning-class agents in tool loops with text
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# generation between calls). Empirical anchor: Claude Opus driving recon
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# via tmux send-keys produced a median of 15.5s.
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INTER_CMD_INSTANT_MAX: float = 0.30
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INTER_CMD_TYPING_MAX: float = 1.50
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INTER_CMD_DELIBERATE_MAX: float = 2.00
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INTER_CMD_LLM_LIGHTWEIGHT_MAX: float = 8.00
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INTER_CMD_LLM_HEAVYWEIGHT_MAX: float = 30.00
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# Sample-size floor for inter-command IAT primitives. Below this we
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# halve the confidence per BEHAVE-EXTRACTOR.md "sample-size honesty".
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MIN_COMMANDS_FOR_FULL_CONFIDENCE: int = 5
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# ── cognitive.command_branch_diversity (Step 6) ─────────────────────────────
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# unique_first_tokens / total_commands ratio. Prototype's empirical
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# split (sessions-2026-05-02-* corpus): CLAUDE-CL chasing one finding
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# ≈ 0.55-0.60 (adaptive), HUMAN exploring filesystem ≈ 0.65-0.70
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# (adaptive), YOU-sim / CLAUDE-FF scripted recon ≈ 0.75+ (linear).
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BRANCH_DIVERSITY_LINEAR_MIN: float = 0.70 # >= → linear_playbook
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# ── cognitive.feedback_loop_engagement (Step 7) ─────────────────────────────
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# Pearson r threshold for "the operator's pause grew with the volume of
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# preceding output". |r| > this → significant; sign carries direction.
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FEEDBACK_CORRELATION_MIN: float = 0.30
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# Need at least this many (output_bytes, next_pause) pairs to even
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# attempt a correlation. Below this the answer is "unknown".
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FEEDBACK_MIN_PAIRS: int = 5
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# ── cognitive.inter_command_consistency (Step 8) ────────────────────────────
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# CV (stdev / mean) of inter-command IATs. Empirical (this corpus):
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# human session CV=0.94 → variable; LLM-simulated CV=0.24 → metronomic;
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# anything beyond 1.5 is heuristically "bimodal" (real bimodal detection
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# via Hartigan dip is filed for v0.2).
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PAUSE_CV_METRONOMIC_MAX: float = 0.40
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PAUSE_CV_BIMODAL_MIN: float = 1.50
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# ── motor.keystroke_cadence (Step B.1) ──────────────────────────────────────
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# Typing bursts split at gaps > IKI_THINK_MAX_S so think-pauses between
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# commands don't inflate the within-burst CV. Mirrors the prototype's
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# _split_into_bursts (BEHAVE/prototype_extractors/shell/extract.py:275-286).
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IKI_THINK_MAX_S: float = 1.50
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# Sub-human floor for the "machine" classification — only paired with a
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# pathologically uniform CV, since real humans never produce sub-5ms IATs
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# in a sustained burst.
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IKI_MACHINE_MAX_S: float = 0.005
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CV_MACHINE_MAX: float = 0.05
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CV_STEADY_MAX: float = 0.50
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CV_BURSTY_MAX: float = 1.50
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# Need this many input events before we'll claim a cadence at all.
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MIN_INPUTS_FOR_CADENCE: int = 5
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# ── motor.motor_stability (Step B.2) ────────────────────────────────────────
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# Tremor proxy: fraction of within-burst IATs below TREMOR_FAST_FLOOR_S
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# (30 ms — physiologically implausible double-press floor; humans can't
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# reliably produce IATs below ~50 ms in sustained typing). High rate
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# of sub-floor IATs flags double-press / motor twitch / stuck-key.
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TREMOR_FAST_FLOOR_S: float = 0.030
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TREMOR_RATE_MIN: float = 0.10 # ≥10% sub-floor → tremor
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