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Author SHA1 Message Date
github-actions[bot] 944af06a87 chore(master): release 1.3.3 (#30)
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2026-04-25 09:25:18 +02:00
TPTBusiness 97e42d7a1a fix(loop): compress old experiment history in proposal prompt to reduce context size
- Summarize all but the 2 most recent experiments to compact bullet lines
  (factor name, PASS/FAIL, IC value, 120-char observation snippet) instead
  of including full verbatim traces; reduces prompt from ~121k to ~40-60k tokens
- Fix _evaluate_factor_directly and _save_factor_values to look for result.h5
  and factor.py in sub_workspace_list instead of experiment_workspace
- Fix Series.to_parquet() → Series.to_frame().to_parquet() in _save_factor_values
- Update factor_data_template README: correct bars-per-day (1440, not 96)
- Update prompts to accept 2024-only debug dataset output as valid factor result
- Fix factor_coder prompts: allow 2024 debug data in date-range instruction

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-25 09:10:39 +02:00
TPTBusiness 5481e83f03 fix(factors): extend look-ahead rules to session factors and add intraday-factor guidance
- Rule 7 extended: session-based aggregations (London/NY/Asian) must also
  be shifted by 1 trading day before use — same as daily aggregations
- Rule 8 added: prefer pure intraday rolling factors (RSI, Bollinger, VWAP
  deviation, rolling std) that have no look-ahead risk and vary every minute
- predix_full_eval.py: apply _shift_daily_constant_factor_if_needed before IC
- predix_gen_strategies_real_bt.py: improved swing prompt with daily-level
  signal logic guidance for daily-constant factors

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 20:19:07 +02:00
TPTBusiness 88c4cc4a33 fix(backtest): replace broken MC permutation test with binomial win-rate test
The previous monte_carlo_trade_pvalue() used sum(permuted_trades) as test
statistic, which is permutation-invariant (sum is commutative), so beat/n
was always 1.0 and MC_p was always 1.00 for every strategy.

Replace with a one-sided binomial test on trade win rate vs 50% baseline.
Tests whether the observed win rate could occur by chance under H0: p=0.5.

Also add _shift_daily_constant_factor_if_needed() to predix_full_eval.py
so re-evaluations apply the look-ahead bias correction for daily factors.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 09:55:45 +02:00
TPTBusiness 01889a6b64 fix(factors): detect and correct look-ahead bias in daily-constant factors
Daily factors (e.g. daily_log_return) carried same-day close data at 00:00,
giving the model end-of-day information at bar open — a classic look-ahead bias
that produced spurious IC=0.25 and Sharpe=24 with 98% win rate.

Changes:
- factor_runner.py: add _shift_daily_constant_factor_if_needed() that detects
  factors where >90% of days have a single unique intraday value, then shifts
  them by 1 trading day before IC computation
- prompts.yaml: add rule #7 instructing LLM to always shift(1) daily aggregates
  before forward-filling to minute bars

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 09:34:06 +02:00
github-actions[bot] 443c6d47b2 chore(master): release 1.3.2 (#29)
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2026-04-23 20:31:26 +02:00
TPTBusiness b10d3512df fix(strategies): handle None ic/sharpe/dd in rejected strategy log output
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-23 20:21:21 +02:00
TPTBusiness d75cba934e fix(strategies): guard against None IC in acceptance check, disable slow wf_rolling
- abs(ic or 0) prevents TypeError crash when backtest returns no IC value
- wf_rolling=False and mc_n_permutations=50 for faster generation runs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-22 20:51:07 +02:00
10 changed files with 338 additions and 58 deletions
+1 -1
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@@ -1,3 +1,3 @@
{
".": "1.3.1"
".": "1.3.3"
}
+20
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@@ -1,5 +1,25 @@
# Changelog
## [1.3.3](https://github.com/TPTBusiness/Predix/compare/v1.3.2...v1.3.3) (2026-04-25)
### Bug Fixes
* **backtest:** replace broken MC permutation test with binomial win-rate test ([c38d894](https://github.com/TPTBusiness/Predix/commit/c38d89478f586825bfca5715a96ca70ccd8791a3))
* **factors:** detect and correct look-ahead bias in daily-constant factors ([eb490a4](https://github.com/TPTBusiness/Predix/commit/eb490a461b66cbd815ae53ac5205115754712432))
* **factors:** extend look-ahead rules to session factors and add intraday-factor guidance ([c24c100](https://github.com/TPTBusiness/Predix/commit/c24c100442d6487686c0578de0b32d240fcbf215))
* **loop:** compress old experiment history in proposal prompt to reduce context size ([4bf90a9](https://github.com/TPTBusiness/Predix/commit/4bf90a905ba8b2aba2a818191c19998088cccaaf))
* **strategies:** guard against None IC in acceptance check, disable slow wf_rolling ([2197f52](https://github.com/TPTBusiness/Predix/commit/2197f52150a50ef38d9e70991d7e48c8c30caec4))
* **strategies:** handle None ic/sharpe/dd in rejected strategy log output ([ad2ad3a](https://github.com/TPTBusiness/Predix/commit/ad2ad3ab3360ea75ed3bbc90c12098b9c5cc0114))
## [1.3.2](https://github.com/TPTBusiness/Predix/compare/v1.3.1...v1.3.2) (2026-04-23)
### Bug Fixes
* **strategies:** guard against None IC in acceptance check, disable slow wf_rolling ([2197f52](https://github.com/TPTBusiness/Predix/commit/2197f52150a50ef38d9e70991d7e48c8c30caec4))
* **strategies:** handle None ic/sharpe/dd in rejected strategy log output ([ad2ad3a](https://github.com/TPTBusiness/Predix/commit/ad2ad3ab3360ea75ed3bbc90c12098b9c5cc0114))
## [1.3.1](https://github.com/TPTBusiness/Predix/compare/v1.3.0...v1.3.1) (2026-04-21)
+13 -12
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@@ -356,11 +356,12 @@ def monte_carlo_trade_pvalue(
"""
Monte Carlo permutation test on trade-level P&L.
Shuffles the order of trade returns ``n_permutations`` times and computes
the fraction of runs whose total return is >= the real total return.
Runs a one-sided binomial test on trade-level win rate.
p < 0.05 → strategy has a statistically significant edge (real return
beats 95% of random sequences with the same set of trades).
Tests H0: win_rate = 0.5 (random trading) against H1: win_rate > 0.5.
The ``n_permutations`` parameter is kept for API compatibility but is unused.
p < 0.05 → win rate is significantly above 50%, indicating a genuine per-trade edge.
Parameters
----------
@@ -379,14 +380,14 @@ def monte_carlo_trade_pvalue(
if len(trade_pnl) < 2:
return 1.0
trades = trade_pnl.values.copy()
real_total = float(trades.sum())
rng = np.random.default_rng(seed)
beat = 0
for _ in range(n_permutations):
perm = rng.permutation(trades)
if perm.sum() >= real_total:
beat += 1
return beat / n_permutations
# Binomial test: is the win rate significantly above 50%?
# p = probability of observing >= n_wins out of n_trades under null (win_rate=0.5).
# Low p → strategy has a significant positive edge per trade.
from scipy.stats import binomtest
n_wins = int((trades > 0).sum())
n_total = len(trades)
result = binomtest(n_wins, n_total, p=0.5, alternative="greater")
return float(result.pvalue)
def walk_forward_rolling(
@@ -53,7 +53,7 @@ evolving_strategy_factor_implementation_v1_system: |-
- ALWAYS use `min_periods=N` where N equals the window size in rolling calculations (e.g., `.rolling(20, min_periods=20)`)
- ALWAYS handle infinite values after division: `.replace([np.inf, -np.inf], np.nan)` before saving results
- ALWAYS use `groupby(level=1)` or `groupby('instrument')` before rolling operations on MultiIndex dataframes
- Process the COMPLETE date range (2020-2026), do NOT filter by date
- Process the COMPLETE date range available in the HDF5 file (do NOT filter by date — the file may contain 2024 debug data or full 2020-2026 data)
- Use `groupby().transform()` instead of `groupby().apply()` for single-column assignments
Notice that you should not add any other text before or after the json format.
+153 -29
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@@ -29,6 +29,83 @@ from rdagent.scenarios.qlib.experiment.model_experiment import QlibModelExperime
DIRNAME = Path(__file__).absolute().resolve().parent
DIRNAME_local = Path.cwd()
def _shift_daily_constant_factor_if_needed(factor_col: "pd.Series", factor_name: str) -> "pd.Series":
"""Detect and fix look-ahead bias in daily-constant factors.
A factor is "daily-constant" when every minute bar within the same calendar
day carries an identical value. This happens when LLM code computes a daily
aggregate (e.g. today's log return) and forward-fills it across all intraday
bars without shifting — meaning the end-of-day value is visible at 00:00.
Fix: shift by one trading day so that the value assigned to day T is the
aggregate computed from day T-1, eliminating the forward-looking information.
"""
import numpy as np
try:
notnull = factor_col.dropna()
if len(notnull) < 200:
return factor_col
datetimes = notnull.index.get_level_values("datetime")
dates = datetimes.normalize()
# Sample up to 50 random days and check intra-day uniqueness
unique_dates = pd.Series(dates.unique())
sample_dates = unique_dates.sample(min(50, len(unique_dates)), random_state=42)
daily_unique_counts = []
for d in sample_dates:
mask = dates == d
vals = notnull.values[mask]
if len(vals) > 1:
daily_unique_counts.append(len(np.unique(vals[~np.isnan(vals)])))
if not daily_unique_counts:
return factor_col
# If >90% of sampled days have exactly 1 unique value → daily-constant
fraction_constant = sum(1 for c in daily_unique_counts if c == 1) / len(daily_unique_counts)
if fraction_constant < 0.90:
return factor_col # Intraday factor — no shift needed
logger.warning(
f"[LookAheadFix] Factor '{factor_name}' is daily-constant "
f"({fraction_constant:.0%} of days). Applying 1-day shift to remove look-ahead bias."
)
# Shift: for each instrument, map daily values forward by 1 trading day
instruments = factor_col.index.get_level_values("instrument").unique()
shifted_parts = []
for inst in instruments:
inst_series = factor_col.xs(inst, level="instrument")
# Get one value per calendar day (the first non-null bar)
inst_dt = inst_series.index.normalize()
daily_vals = inst_series.groupby(inst_dt).first()
# Shift by 1 day
daily_vals_shifted = daily_vals.shift(1)
# Forward-fill back to minute bars
minute_idx = inst_series.index
minute_dates = minute_idx.normalize()
shifted_minute = minute_dates.map(daily_vals_shifted)
shifted_s = pd.Series(
shifted_minute.values,
index=pd.MultiIndex.from_arrays(
[inst_series.index, [inst] * len(inst_series)],
names=["datetime", "instrument"],
),
name=factor_col.name,
)
shifted_parts.append(shifted_s)
return pd.concat(shifted_parts).sort_index()
except Exception as e:
logger.debug(f"[LookAheadFix] Could not apply daily shift for '{factor_name}': {e}")
return factor_col
# TODO: supporting multiprocessing and keep previous results
@@ -391,8 +468,19 @@ class QlibFactorRunner(CachedRunner[QlibFactorExperiment]):
import numpy as np
try:
# Get workspace path
workspace_path = exp.experiment_workspace.workspace_path
# Get workspace path — factor code and result.h5 live in sub_workspace_list[0],
# not in experiment_workspace (which is the Qlib template workspace).
workspace_path = None
if exp.sub_workspace_list:
for ws in exp.sub_workspace_list:
if ws is not None and hasattr(ws, 'workspace_path'):
candidate = ws.workspace_path / "result.h5"
if candidate.exists():
workspace_path = ws.workspace_path
break
if workspace_path is None:
# Fallback to experiment_workspace
workspace_path = exp.experiment_workspace.workspace_path
if workspace_path is None:
return None
@@ -409,6 +497,12 @@ class QlibFactorRunner(CachedRunner[QlibFactorExperiment]):
factor_col = factor_values.iloc[:, 0]
factor_name = factor_values.columns[0]
# Detect and fix look-ahead bias in daily-constant factors.
# If a factor has the same value for all minute bars within each calendar day
# it was computed from same-day data (e.g. today's close return at 00:00).
# Fix: shift by 1 trading day so value at day T = aggregate of day T-1.
factor_col = _shift_daily_constant_factor_if_needed(factor_col, factor_name)
# Load source data for forward returns
data_path = (
Path(__file__).parent.parent.parent.parent.parent
@@ -587,10 +681,12 @@ class QlibFactorRunner(CachedRunner[QlibFactorExperiment]):
from pathlib import Path
from rdagent.components.backtesting import ResultsDatabase
# Get factor name from hypothesis
# Get factor name: prefer hypothesis, fallback to result Series 'factor_name' key
factor_name = "unknown"
if hasattr(exp, 'hypothesis') and exp.hypothesis is not None:
factor_name = getattr(exp.hypothesis, 'hypothesis', 'unknown')
if factor_name == 'unknown' and isinstance(result, pd.Series) and 'factor_name' in result.index:
factor_name = str(result['factor_name'])
# Check if already rejected by protection
if getattr(exp, 'rejected_by_protection', False):
@@ -824,41 +920,74 @@ class QlibFactorRunner(CachedRunner[QlibFactorExperiment]):
"""
Save factor time-series values as parquet for strategy building.
This is essential for walk-forward validation and strategy combination.
Parameters
----------
factor_name : str
Name of the factor
exp : QlibFactorExperiment
The experiment with factor values
Reruns the factor code on the FULL 6-year dataset so the parquet covers
the complete backtest range (not just the debug 2024 subset).
"""
import os as _os
import subprocess
import shutil
import tempfile
try:
# Get workspace path
workspace_path = exp.experiment_workspace.workspace_path
# factor.py lives in sub_workspace_list[0], not experiment_workspace
workspace_path = None
if exp.sub_workspace_list:
for ws in exp.sub_workspace_list:
if ws is not None and hasattr(ws, 'workspace_path'):
fp = ws.workspace_path / "factor.py"
if fp.exists():
workspace_path = ws.workspace_path
break
if workspace_path is None:
workspace_path = exp.experiment_workspace.workspace_path
if workspace_path is None:
return
result_h5 = workspace_path / "result.h5"
if not result_h5.exists():
factor_py = workspace_path / "factor.py"
if not factor_py.exists():
return
# Read factor values
project_root = Path(__file__).parent.parent.parent.parent.parent
full_data = (
project_root
/ "git_ignore_folder"
/ "factor_implementation_source_data"
/ "intraday_pv.h5"
)
if not full_data.exists():
return
# Run factor code on full data in a temp workspace
import pandas as pd
df = pd.read_hdf(str(result_h5), key="data")
with tempfile.TemporaryDirectory(prefix="predix_fullval_") as tmp_dir:
tmp = Path(tmp_dir)
shutil.copy(str(factor_py), str(tmp / "factor.py"))
shutil.copy(str(full_data), str(tmp / "intraday_pv.h5"))
ret = subprocess.run(
["python", "factor.py"],
cwd=str(tmp),
capture_output=True,
timeout=300,
)
if ret.returncode != 0:
# Fall back to debug-data result if full-data run fails
result_h5 = workspace_path / "result.h5"
if not result_h5.exists():
return
df = pd.read_hdf(str(result_h5), key="data")
else:
result_h5_full = tmp / "result.h5"
if not result_h5_full.exists():
return
df = pd.read_hdf(str(result_h5_full), key="data")
if df is None or df.empty:
return
# Get the factor series (first column)
series = df.iloc[:, 0]
series.name = factor_name
# Save to results/factors/values/
project_root = Path(__file__).parent.parent.parent.parent.parent
# Parallel run isolation
parallel_run_id = _os.getenv("PARALLEL_RUN_ID", "0")
if parallel_run_id != "0":
values_dir = project_root / "results" / "runs" / f"run{parallel_run_id}" / "factors" / "values"
@@ -866,16 +995,11 @@ class QlibFactorRunner(CachedRunner[QlibFactorExperiment]):
values_dir = project_root / "results" / "factors" / "values"
values_dir.mkdir(parents=True, exist_ok=True)
# Safe filename
safe_name = factor_name.replace("/", "_").replace("\\", "_").replace(" ", "_")[:100]
parquet_path = values_dir / f"{safe_name}.parquet"
series.to_frame().to_parquet(str(parquet_path))
# Save as parquet (with datetime index)
series.to_parquet(str(parquet_path))
except Exception as e:
# Don't let factor value saving break the main workflow
except Exception:
pass
def _log_result_warnings(self, factor_name: str, result, metrics: dict) -> None:
@@ -23,14 +23,25 @@ $low: low price at 1-minute bar.
$volume: volume at 1-minute bar (tick volume for FX).
## Important Notes for 1min Data
- 96 bars = 1 trading day (24 hours for FX)
- 1 bar = 1 minute (confirmed)
- 16 bars = 16 minutes
- 4 bars = 4 minutes
- 1 bar = 1 minute
- 60 bars = 1 hour
- ~1440 bars = 1 full trading day (FX trades nearly 24h, Mon 00:00 - Fri 22:00 UTC approx.)
- Typical bars per calendar day: ~1200-1440 (varies by weekday, holidays have fewer)
- Do NOT assume 96 bars/day — the actual count depends on the date
- Data range: 2020-01-01 to 2026-03-20
- Instrument: EURUSD
- Timezone: UTC
## IMPORTANT: Bars per Day Correction
The dataset has approximately 1440 bars per full trading day (1 bar = 1 minute, ~24h of FX trading).
Some older documentation incorrectly stated "96 bars = 1 day" — this is WRONG. Always use:
- 60 bars = 1 hour
- 480 bars = 8 hours (London session 08:00-16:00 UTC)
- 180 bars = 3 hours (London/NY overlap 13:00-16:00 UTC)
Use datetime hour filtering (e.g., `df[df.index.get_level_values('datetime').hour.between(8, 15)]`)
to select session bars — do NOT use bar-count offsets to define sessions.
## Session Times (UTC)
- Asian: 00:00-08:00 UTC (low volatility)
- London: 08:00-16:00 UTC (high volatility)
+30 -1
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@@ -104,7 +104,7 @@ qlib_factor_strategy: |-
result_df.columns = ['daily_volume_price_divergence']
```
4. **Process ALL data — do not filter dates**: The source HDF5 contains data from 2020-01-01 to 2026-03-20. Do NOT filter to a single year. If your output has only 314 entries (one year of daily data), the factor will be rejected. Expected output: ~1500+ daily entries for 2020-2026.
4. **Process ALL data — do not filter dates**: The source HDF5 contains data from 2020-01-01 to 2026-03-20 (development runs may use a 2024-only debug dataset with ~300 entries, which is acceptable). Do NOT filter to a single year in your code. Write your code to process whatever date range is available in the HDF5 file — do not hardcode date filters. Expected output for production data: ~1500+ daily entries for 2020-2026. Expected output for debug data: ~300 daily entries for 2024. Both are valid.
5. **Use `transform()` instead of `apply()` for per-group calculations**: `transform()` preserves the original index while `apply()` may reduce the number of rows unexpectedly:
```python
@@ -121,6 +121,35 @@ qlib_factor_strategy: |-
assert result_df.index.names == ['datetime', 'instrument'], f"Index names must be ['datetime', 'instrument'], got {result_df.index.names}"
```
7. **NEVER use same-day aggregations as the factor value — always shift by 1 day**: If your factor computes a daily aggregate (e.g. daily close return, daily OHLC range, daily volume), that aggregate is only known at end-of-day. Using it at the start of the same day is look-ahead bias. You MUST shift the daily aggregate by 1 day before forward-filling to minute bars:
```python
# WRONG: look-ahead bias! Today's close return is not known at 00:00
daily_ret = df['$close'].groupby(level='instrument').resample('1D', level='datetime').last().pct_change()
result_df['my_factor'] = daily_ret.groupby(level='instrument').transform(lambda x: x.reindex(df.index.get_level_values('datetime'), method='ffill'))
# CORRECT: shift by 1 trading day so factor value at day T = aggregate of day T-1
daily_close = df.groupby([df.index.get_level_values('datetime').normalize(), df.index.get_level_values('instrument')])['$close'].last()
daily_close.index.names = ['date', 'instrument']
daily_ret = daily_close.groupby(level='instrument').pct_change().shift(1) # <-- shift(1) is MANDATORY
# then map back to minute bars via ffill
```
This rule applies to ALL daily aggregations: returns, OHLC stats, volume, momentum, slopes, etc.
**Session-based aggregations (London, NY, Asian session returns) are also daily aggregations** — the London
session (08:00-16:00 UTC) ends at 16:00, so its return must be shifted by 1 day before use.
Intraday rolling factors (e.g. 30-min rolling std computed at bar t using only bars t-N..t-1) do NOT need this shift.
8. **PREFER pure intraday rolling factors**: Factors that use only a trailing window of recent bars (e.g.
rolling(30).mean() of returns, RSI(14), Bollinger Band z-score) have NO look-ahead risk and vary every
minute. These are the best candidates for short-horizon (60-180 bar) prediction. Examples:
- Rolling 15-min / 30-min / 60-min return momentum (15, 30, 60 bars respectively)
- Rolling volatility (std of returns over 20-60 bars)
- Distance of close from N-bar moving average (z-score)
- RSI or similar oscillators computed on 1-min bars
- VWAP deviation (requires volume — use $volume column)
Always use `.shift(1)` on the lagged window (e.g. `rolling(N).mean().shift(1)`) to avoid using the
current bar's own price in its own feature value.
NOTE: 1 bar = 1 minute. The data has ~1440 bars per full trading day. Do NOT use 96 as a day proxy.
qlib_factor_output_format: |-
Your output should be a pandas dataframe similar to the following example information:
<class 'pandas.core.frame.DataFrame'>
@@ -152,9 +152,41 @@ class QlibQuantHypothesisGen(FactorAndModelHypothesisGen):
factor_inserted = True
if len(specific_trace.hist) > 0:
specific_trace.hist.reverse()
hypothesis_and_feedback = T("scenarios.qlib.prompts:hypothesis_and_feedback").r(
trace=specific_trace,
)
# Keep only the 2 most recent experiments in full detail; compress older ones
# to brief bullet points to stay within the LLM context window.
FULL_DETAIL_COUNT = 2
old_hist = specific_trace.hist[:-FULL_DETAIL_COUNT] if len(specific_trace.hist) > FULL_DETAIL_COUNT else []
recent_hist = specific_trace.hist[-FULL_DETAIL_COUNT:] if len(specific_trace.hist) > FULL_DETAIL_COUNT else specific_trace.hist
parts = []
if old_hist:
summary_lines = ["## Earlier experiments (summarized):"]
for exp, fb in old_hist:
factor_names = []
for task in exp.sub_tasks:
if task is not None and hasattr(task, "factor_name"):
factor_names.append(task.factor_name)
elif task is not None and hasattr(task, "model_type"):
factor_names.append(getattr(task, "model_type", "model"))
names_str = ", ".join(factor_names) if factor_names else "unknown"
ic_str = ""
try:
if exp.result is not None:
ic_val = exp.result.loc["IC"] if "IC" in exp.result.index else ""
ic_str = f" IC={ic_val:.4f}" if ic_val != "" else ""
except Exception:
pass
decision_str = "PASS" if fb.decision else "FAIL"
obs_short = (fb.observations or "")[:120].replace("\n", " ")
summary_lines.append(f"- [{decision_str}]{ic_str} {names_str}: {obs_short}")
parts.append("\n".join(summary_lines))
if recent_hist:
recent_trace = Trace(specific_trace.scen)
recent_trace.hist = recent_hist
parts.append(T("scenarios.qlib.prompts:hypothesis_and_feedback").r(trace=recent_trace))
hypothesis_and_feedback = "\n\n".join(parts)
else:
hypothesis_and_feedback = "No previous hypothesis and feedback available."
+50
View File
@@ -198,6 +198,55 @@ def scan_factors(workspace_dir: Path, skip_evaluated: bool = True) -> List[Facto
return factors
# ---------------------------------------------------------------------------
# Look-ahead bias detection for daily-constant factors
# ---------------------------------------------------------------------------
def _shift_daily_constant_factor_if_needed(factor_col: "pd.Series", factor_name: str) -> "pd.Series":
"""Detect daily-constant factors (look-ahead bias) and shift by 1 trading day."""
sample_days = factor_col.index.get_level_values("datetime").normalize().unique()
if len(sample_days) < 10:
return factor_col
rng = np.random.default_rng(42)
days_to_check = rng.choice(sample_days, size=min(50, len(sample_days)), replace=False)
constant_count = 0
for day in days_to_check:
day_mask = factor_col.index.get_level_values("datetime").normalize() == day
day_vals = factor_col[day_mask].dropna()
if len(day_vals) == 0:
continue
if day_vals.nunique() == 1:
constant_count += 1
fraction_constant = constant_count / len(days_to_check)
if fraction_constant < 0.90:
return factor_col
# Shift by 1 trading day per instrument
import logging
logging.getLogger(__name__).info(
"Factor '%s' is %.0f%% daily-constant — shifting 1 trading day to fix look-ahead bias",
factor_name, fraction_constant * 100,
)
instruments = factor_col.index.get_level_values("instrument").unique() if "instrument" in factor_col.index.names else [None]
shifted_parts = []
for instr in instruments:
if instr is not None:
mask = factor_col.index.get_level_values("instrument") == instr
col_instr = factor_col[mask]
else:
col_instr = factor_col
dates = col_instr.index.get_level_values("datetime").normalize()
trading_days = dates.unique().sort_values()
day_first = col_instr.groupby(dates).first()
day_first_shifted = day_first.shift(1)
day_first_shifted.index = pd.to_datetime(day_first_shifted.index)
day_map = day_first_shifted.reindex(pd.to_datetime(trading_days)).values
new_vals = pd.Series(
day_map[np.searchsorted(trading_days.values, dates.values)],
index=col_instr.index,
)
shifted_parts.append(new_vals)
return pd.concat(shifted_parts).sort_index()
# ---------------------------------------------------------------------------
# Factor evaluator
# ---------------------------------------------------------------------------
@@ -263,6 +312,7 @@ def evaluate_factor_full(factor: FactorInfo, full_data: pd.DataFrame,
result = pd.read_hdf(str(result_file), key="data")
total_count = len(result)
factor_val = result.iloc[:, 0]
factor_val = _shift_daily_constant_factor_if_needed(factor_val, factor.factor_name)
non_null_count = factor_val.notna().sum()
if non_null_count < 1000:
+21 -8
View File
@@ -250,7 +250,7 @@ Hard requirements:
- NO global mean/std — always use rolling(window).mean() with shift(1) to avoid look-ahead bias"""
else:
system_prompt = f"""You are a quantitative trading expert specializing in EUR/USD intraday strategies.
system_prompt = f"""You are a quantitative trading expert specializing in EUR/USD daily swing strategies.
CRITICAL RULES for {STYLE_DESC} (forward horizon: {FORWARD_BARS} bars = ~{FORWARD_BARS/60:.1f} hours):
1. ONLY use the factors listed below - no others!
@@ -258,15 +258,27 @@ CRITICAL RULES for {STYLE_DESC} (forward horizon: {FORWARD_BARS} bars = ~{FORWAR
3. Create a pandas Series called 'signal' with values: 1 (long), -1 (short), 0 (neutral)
4. signal.index MUST match close.index
5. signal.name must be 'signal'
6. IMPORTANT: factors are DAILY values broadcast to every 1-minute bar — they change once per day.
Use daily-level logic: compare today's factor value to a rolling daily mean (window 5-20 DAYS).
To get daily rolling mean: group by date, take first value per day, compute rolling, then reindex back.
Example: dates = factors[col].index.get_level_values('datetime').normalize()
daily_vals = factors[col].groupby(dates).first()
daily_mean = daily_vals.rolling(10).mean().shift(1)
daily_signal = (daily_vals > daily_mean).astype(int) * 2 - 1
signal = daily_signal.reindex(dates).values (broadcast back to minute bars)
7. The signal should change roughly once per day — this produces ~250-500 trades over 6 years.
8. Keep conditions SIMPLE: one factor above/below its N-day rolling average. Avoid combining 3+ conditions.
Output ONLY valid JSON with these fields:
{{"strategy_name": "short_name", "factor_names": ["f1", "f2"], "description": "one sentence", "code": "python code"}}"""
user_prompt = f"""Create a EUR/USD trading strategy using these factors:
user_prompt = f"""Create a EUR/USD SWING trading strategy (hold ~{FORWARD_BARS/60:.0f} hours) using these factors:
{factor_list}
{f'Previous feedback: {feedback}' if feedback else 'First attempt - be creative!'}"""
{f'Previous feedback: {feedback}' if feedback else 'First attempt - be creative!'}
Use daily-level signal logic (factor above/below rolling daily mean). Signal changes once per day."""
api = APIBackend()
response = api.build_messages_and_create_chat_completion(
@@ -371,8 +383,8 @@ signal.fillna(0).to_pickle('signal.pkl')
txn_cost_bps=TXN_COST_BPS,
forward_returns=fwd_returns,
oos_start=OOS_START_DEFAULT,
wf_rolling=True,
mc_n_permutations=200,
wf_rolling=False, # too slow on 2M bars — run via rebacktest script instead
mc_n_permutations=50,
)
# ============================================================================
@@ -579,7 +591,7 @@ def main(target_count=10):
# Check acceptance criteria — OOS must be profitable + statistically significant
mc_ok = mc_pvalue is None or mc_pvalue < 0.20 # lenient: top 20% non-random
wf_ok = wf_consistency is None or wf_consistency >= 0.5 # ≥50% of WF windows profitable
if (abs(ic) > MIN_IC and sharpe > MIN_SHARPE and trades > MIN_TRADES and dd > MAX_DRAWDOWN
if (abs(ic or 0) > MIN_IC and sharpe > MIN_SHARPE and trades > MIN_TRADES and dd > MAX_DRAWDOWN
and oos_sharpe > 0.0 and oos_monthly > 0.0 and mc_ok and wf_ok):
# ACCEPT
strategy['real_backtest'] = bt_result
@@ -636,9 +648,10 @@ def main(target_count=10):
oos_info = f"OOS_Sharpe={oos_sharpe:+.2f} OOS_Mon={oos_monthly:+.2f}%" if oos_sharpe is not None else ""
mc_info = f" MC_p={mc_pvalue:.2f}" if mc_pvalue is not None else ""
wf_info = f" WF_consistency={wf_consistency:.0%}" if wf_consistency is not None else ""
_log.info(f"REJECTED IC={ic:.4f} Sharpe={sharpe:.2f} Trades={trades} DD={dd:.1%} {oos_info}{mc_info}{wf_info}")
_ic = ic or 0; _sh = sharpe or 0; _dd = dd or 0
_log.info(f"REJECTED IC={_ic:.4f} Sharpe={_sh:.2f} Trades={trades} DD={_dd:.1%} {oos_info}{mc_info}{wf_info}")
feedback_history.append(
f"Failed: IC={ic:.4f}, Sharpe={sharpe:.2f}, Trades={trades}, DD={dd:.1%}, "
f"Failed: IC={_ic:.4f}, Sharpe={_sh:.2f}, Trades={trades}, DD={_dd:.1%}, "
f"OOS_Sharpe={oos_sharpe:+.2f}, OOS_Monthly={oos_monthly:+.2f}%"
+ (f", MC_p={mc_pvalue:.2f}" if mc_pvalue is not None else "")
+ (f", WF_consistency={wf_consistency:.0%}" if wf_consistency is not None else "")