lsv / lsvbench /tasks /monitor_next_step.py
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"""Finetune-style monitor-next delta task."""
from __future__ import annotations
from collections import Counter
from pathlib import Path
from typing import Any
from ..io import BENCHMARK_ROOT, DATA_DIR, manifest_examples, select_shard
from ..metrics import bootstrap_sem, classification_scores
from ..parsing import normalize_step_id, parse_next_step_delta_response
from .base import BenchmarkTask, TaskSpec
class MonitorNextStepTask(BenchmarkTask):
spec = TaskSpec(
name="monitor_next_step",
display_name="Protocol Monitoring Advance Prediction",
default_manifest=DATA_DIR / "monitor_next_step.json",
)
primary_metric = "advance_step_balanced_accuracy"
def load_examples(
self,
*,
benchmark_root: Path = BENCHMARK_ROOT,
manifest_path: Path | None = None,
video_root: Path | None = None,
num_shards: int = 1,
shard_index: int = 0,
limit: int | None = None,
) -> list[dict[str, Any]]:
rows = manifest_examples(manifest_path or self.default_manifest)
root = video_root or benchmark_root
for row in rows:
row["task"] = self.name
row["_video_abs"] = str(root / str(row["video_path"]))
rows = sorted(rows, key=lambda row: str(row.get("eval_id")))
if limit is not None:
rows = rows[:limit]
return select_shard(rows, num_shards, shard_index)
def parse_record(self, row: dict[str, Any]) -> dict[str, Any]:
if row.get("error"):
return row
parsed = parse_next_step_delta_response(str(row.get("raw_response") or ""))
pred_current_norm = normalize_step_id(parsed.get("pred_current_step_id"))
target_current_norm = normalize_step_id(row.get("target_current_step_id"))
target_start_norm = normalize_step_id(row.get("target_start_step_id"))
pred_advances = None
if pred_current_norm is not None and target_start_norm is not None:
pred_advances = pred_current_norm != target_start_norm
row.update(
{
**parsed,
"pred_current_step_id_normalized": pred_current_norm,
"target_current_step_id_normalized": target_current_norm,
"pred_advances_step": pred_advances,
"current_step_correct": pred_current_norm is not None and pred_current_norm == target_current_norm,
}
)
return row
def _summary(self, rows: list[dict[str, Any]]) -> dict[str, Any]:
parsed = self.parse_rows(rows)
scored = [row for row in parsed if not row.get("error")]
current_correct = 0
current_parsed = 0
advance_pairs: list[tuple[str, str | None]] = []
skipped_pairs: list[tuple[str, str | None]] = []
skipped_step_ref_correct = 0
skipped_step_ref_total = 0
for row in scored:
pred_current = normalize_step_id(row.get("pred_current_step_id"))
target_current = normalize_step_id(row.get("target_current_step_id"))
target_start = normalize_step_id(row.get("target_start_step_id"))
if pred_current is not None:
current_parsed += 1
current_correct += int(pred_current is not None and pred_current == target_current)
pred_advances = None
if pred_current is not None and target_start is not None:
pred_advances = pred_current != target_start
advance_pairs.append((str(bool(row.get("target_advances_step"))), None if pred_advances is None else str(bool(pred_advances))))
skipped_pred = row.get("pred_has_step_skipped")
skipped_pairs.append((str(bool(row.get("target_has_error"))), None if skipped_pred is None else str(bool(skipped_pred))))
if row.get("target_has_error"):
skipped_step_ref_total += 1
pred_ref = normalize_step_id(row.get("pred_error_step_id"))
target_ref = normalize_step_id(row.get("target_error_step_id"))
skipped_step_ref_correct += int(pred_ref is not None and pred_ref == target_ref)
advance = classification_scores(advance_pairs, labels=["False", "True"])
skipped = classification_scores(skipped_pairs, labels=["False", "True"])
n = len(scored)
parse_errors = sum(1 for row in scored if not row.get("pred_parse_ok"))
return {
"task": self.name,
"display_name": self.display_name,
"rows": len(rows),
"scored": n,
"errors": sum(1 for row in rows if row.get("error")),
"parse_errors": parse_errors,
"parse_success_rate": (n - parse_errors) / n if n else None,
"current_step_accuracy": current_correct / n if n else None,
"current_step_accuracy_parsed_only": current_correct / current_parsed if current_parsed else None,
"advance_step_accuracy": advance["accuracy"],
"advance_step_balanced_accuracy": advance["balanced_accuracy"],
"advance_step_macro_f1": advance["macro_f1"],
"advance_step_macro_precision": advance["macro_precision"],
"advance_step_macro_recall": advance["macro_recall"],
"advance_step_precision": advance["precision"],
"advance_step_recall": advance["recall"],
"advance_step_f1": advance["f1"],
"advance_step_confusion": advance["confusion"],
"skipped_step_accuracy": skipped["accuracy"],
"skipped_step_balanced_accuracy": skipped["balanced_accuracy"],
"skipped_step_macro_f1": skipped["macro_f1"],
"skipped_step_macro_precision": skipped["macro_precision"],
"skipped_step_macro_recall": skipped["macro_recall"],
"skipped_step_confusion": skipped["confusion"],
"skipped_step_ref_accuracy": skipped_step_ref_correct / skipped_step_ref_total if skipped_step_ref_total else None,
"task_counts": dict(Counter(str(row.get("task_type")) for row in scored)),
"history_variant_counts": dict(Counter(str(row.get("history_variant")) for row in scored)),
"window_kind_counts": dict(Counter(str(row.get("window_kind")) for row in scored)),
}
def score(self, rows: list[dict[str, Any]]) -> dict[str, Any]:
parsed = self.parse_rows(rows)
summary = self._summary(parsed)
for metric in (
"advance_step_accuracy",
"advance_step_balanced_accuracy",
"advance_step_macro_f1",
"advance_step_macro_precision",
"advance_step_macro_recall",
"skipped_step_accuracy",
"skipped_step_balanced_accuracy",
"skipped_step_macro_f1",
):
summary[f"{metric}_sem"] = bootstrap_sem(parsed, metric, self._summary, iterations=200)
return summary