Files
nofx/scripts/optimize/simulate.py
tinkle-community ed3bebf287 feat: TPE Bayesian search harness for autopilot risk/throttle params
Replay recorded AI decisions from decision_records under alternative
risk-control and throttle parameters, then search the 15-dim space with
Optuna multivariate TPE.

- extract.py: parse decision cycles, intents (incl. throttled ones), 15m
  OHLCV and per-cycle prices out of input prompts into CSVs
- simulate.py: replay engine mirroring auto_trader_throttle.go semantics
  (margin-based PnL%% thresholds, intra-candle SL/TP trigger orders,
  opens/hour + reentry + margin gates); live-config replay reproduces the
  real account curve (-83%% sim vs -85%% actual)
- search.py: TPE search (train/holdout split) + baselines + importances

Findings: train-window optima do not survive holdout (overfit); only
2/800 trials are positive across all 3 time folds. Dominant lever is
min_confidence (importance 0.79) — the edge problem is decision quality,
not risk parameters.
2026-07-23 10:30:51 +09:00

339 lines
14 KiB
Python

"""Replay recorded AI decisions under alternative risk/throttle parameters.
Mirrors the live semantics of trader/auto_trader_throttle.go:
- throttle thresholds compare MARGIN-based PnL% (leverage-multiplied price move),
because auto_trader_loop.go computes UnrealizedPnLPct = pnl / margin
- stop-loss / take-profit are exchange trigger orders -> intra-candle fills
- opens are gated by confidence, per-cycle/per-hour caps, re-entry cooldown,
max positions and available margin
Known limitation: decisions are replayed as recorded. Parameters that would have
changed WHAT the AI decided (prompt wording, candidate pool) are out of scope;
parameters that gate/size/exit those decisions are faithfully simulated.
"""
import bisect
import csv
import os
from dataclasses import dataclass, field
from datetime import datetime, timedelta
HERE = os.path.dirname(os.path.abspath(__file__))
DATA = os.path.join(HERE, "data")
FEE_RATE = 0.000784 # measured from trader_fills: 7.84 bps per side
MIN_POSITION_USD = 12.0
LIQUIDATION_MARGIN_PNL = -0.90 # liquidate when margin PnL <= -90%
DATA_GAP_FORCE_CLOSE = timedelta(hours=48)
@dataclass(frozen=True)
class Params:
min_confidence: float = 78.0
min_hold_h: float = 4.0
noise_hold_extra_h: float = 4.0 # noise window = min_hold + extra
reentry_h: float = 3.0
max_opens_per_hour: int = 3
max_opens_per_cycle: int = 2
max_positions: int = 2
leverage: float = 10.0
ratio: float = 5.0 # per-position notional = ratio x equity
sl_bypass: float = -5.0 # margin-PnL% allowing early AI close
tp_bypass: float = 12.0
noise_floor: float = -4.0 # margin-PnL% band blocking flat closes
noise_ceiling: float = 6.0
sl_mult: float = 1.0 # scale AI stop distance from entry
tp_mult: float = 1.0
margin_cap: float = 1.0
@dataclass
class Position:
symbol: str
side: str # "long" | "short"
entry: float
notional: float # USD at entry
qty: float
margin: float
entry_ts: datetime
stop: float = 0.0
take: float = 0.0
last_price: float = 0.0
last_seen: datetime = None
@dataclass
class Trade:
symbol: str
side: str
entry_ts: datetime
exit_ts: datetime
entry: float
exit: float
notional: float
pnl: float # net of fees
fees: float
reason: str
def _ts(s):
return datetime.fromisoformat(s)
def load_dataset():
cycles = []
with open(os.path.join(DATA, "cycles.csv")) as f:
for r in csv.DictReader(f):
cycles.append(
(int(r["cycle_id"]), _ts(r["ts"]),
float(r["equity"]) if r["equity"] else None)
)
cycles.sort(key=lambda c: c[1])
decisions = {}
with open(os.path.join(DATA, "decisions.csv")) as f:
for r in csv.DictReader(f):
decisions.setdefault(int(r["cycle_id"]), []).append(
{
"action": r["action"],
"symbol": r["symbol"],
"price": float(r["price"]),
"stop_loss": float(r["stop_loss"]),
"take_profit": float(r["take_profit"]),
"confidence": float(r["confidence"]),
}
)
prices = {}
with open(os.path.join(DATA, "prices.csv")) as f:
for r in csv.DictReader(f):
prices[(int(r["cycle_id"]), r["symbol"])] = float(r["price"])
candles = {}
with open(os.path.join(DATA, "candles.csv")) as f:
for r in csv.DictReader(f):
candles.setdefault(r["symbol"], []).append(
(_ts(r["ts"]), float(r["open"]), float(r["high"]),
float(r["low"]), float(r["close"]))
)
for sym in candles:
candles[sym].sort(key=lambda c: c[0])
candle_times = {s: [c[0] for c in rows] for s, rows in candles.items()}
return cycles, decisions, prices, candles, candle_times
class Simulator:
def __init__(self, dataset, start_equity=None):
self.cycles, self.decisions, self.prices, self.candles, self.candle_times = dataset
recorded = next((e for _, _, e in self.cycles if e), 100.0)
self.start_equity = start_equity if start_equity is not None else recorded
def price_at(self, symbol, cycle_id, ts):
p = self.prices.get((cycle_id, symbol))
if p:
return p
times = self.candle_times.get(symbol)
if not times:
return None
i = bisect.bisect_right(times, ts) - 1
return self.candles[symbol][i][4] if i >= 0 else None
def margin_pnl_pct(self, pos, price, leverage):
move = (price - pos.entry) / pos.entry
if pos.side == "short":
move = -move
return move * leverage * 100.0
def run(self, p: Params, start=None, end=None):
equity = self.start_equity
positions = {}
open_times = [] # for the opens-per-hour cap
last_close = {} # symbol -> ts
trades = []
curve = []
min_hold = timedelta(hours=p.min_hold_h)
noise_hold = timedelta(hours=p.min_hold_h + p.noise_hold_extra_h)
reentry = timedelta(hours=p.reentry_h)
cycles = [c for c in self.cycles
if (start is None or c[1] >= start) and (end is None or c[1] < end)]
if not cycles:
return None
def close_position(pos, price, ts, reason):
nonlocal equity
move = (price - pos.entry) / pos.entry
if pos.side == "short":
move = -move
gross = pos.notional * move
fees = (pos.notional + pos.qty * price) * FEE_RATE
equity += gross - fees
trades.append(Trade(pos.symbol, pos.side, pos.entry_ts, ts,
pos.entry, price, pos.notional, gross - fees,
fees, reason))
del positions[pos.symbol]
last_close[pos.symbol] = ts
for idx, (cycle_id, ts, _) in enumerate(cycles):
next_ts = cycles[idx + 1][1] if idx + 1 < len(cycles) else ts
# 1. Candle window since previous cycle: trigger orders + liquidation
prev_ts = cycles[idx - 1][1] if idx > 0 else ts - timedelta(minutes=30)
for pos in list(positions.values()):
times = self.candle_times.get(pos.symbol, [])
lo = bisect.bisect_right(times, prev_ts)
hi = bisect.bisect_right(times, ts)
for cts, o, h, low, c in self.candles.get(pos.symbol, [])[lo:hi]:
pos.last_price, pos.last_seen = c, cts
liq_move = -(1.0 / p.leverage) * (-LIQUIDATION_MARGIN_PNL)
if pos.side == "long":
liq_px = pos.entry * (1 + liq_move)
if low <= liq_px:
close_position(pos, liq_px, cts, "liquidation"); break
if pos.stop and low <= pos.stop:
close_position(pos, pos.stop, cts, "stop_loss"); break
if pos.take and h >= pos.take:
close_position(pos, pos.take, cts, "take_profit"); break
else:
liq_px = pos.entry * (1 - liq_move)
if h >= liq_px:
close_position(pos, liq_px, cts, "liquidation"); break
if pos.stop and h >= pos.stop:
close_position(pos, pos.stop, cts, "stop_loss"); break
if pos.take and low <= pos.take:
close_position(pos, pos.take, cts, "take_profit"); break
# Stale market data: force-close what we can no longer price
for pos in list(positions.values()):
if pos.last_seen and ts - pos.last_seen > DATA_GAP_FORCE_CLOSE:
close_position(pos, pos.last_price, ts, "data_gap")
if equity <= 0:
return self._metrics(equity, trades, curve, bankrupt=True)
# 2. Replay this cycle's AI intents
opens_this_cycle = 0
for d in self.decisions.get(cycle_id, []):
sym, act = d["symbol"], d["action"]
if act in ("close_long", "close_short"):
pos = positions.get(sym)
side = "long" if act == "close_long" else "short"
if not pos or pos.side != side:
continue
price = self.price_at(sym, cycle_id, ts) or pos.last_price
if not price:
continue
pnl_pct = self.margin_pnl_pct(pos, price, p.leverage)
held = ts - pos.entry_ts
if held >= min_hold:
allowed = (held >= noise_hold
or pnl_pct <= p.noise_floor
or pnl_pct >= p.noise_ceiling)
else:
allowed = pnl_pct <= p.sl_bypass or pnl_pct >= p.tp_bypass
if allowed:
close_position(pos, price, ts, "ai_close")
elif act in ("open_long", "open_short"):
if d["confidence"] < p.min_confidence:
continue
if opens_this_cycle >= p.max_opens_per_cycle:
continue
if sym in positions or len(positions) >= p.max_positions:
continue
hour_ago = ts - timedelta(hours=1)
open_times[:] = [t for t in open_times if t >= hour_ago]
if len(open_times) >= p.max_opens_per_hour:
continue
if sym in last_close and ts - last_close[sym] < reentry:
continue
price = self.price_at(sym, cycle_id, ts) or d["price"]
if not price or price <= 0:
continue
notional = p.ratio * equity
margin_used = sum(x.margin for x in positions.values())
margin_free = p.margin_cap * equity - margin_used
notional = min(notional, max(0.0, margin_free) * p.leverage)
if notional < MIN_POSITION_USD:
continue
side = "long" if act == "open_long" else "short"
stop = take = 0.0
if d["stop_loss"] > 0:
stop = price - (price - d["stop_loss"]) * p.sl_mult \
if side == "long" else \
price + (d["stop_loss"] - price) * p.sl_mult
if (side == "long") != (stop < price):
stop = 0.0
if d["take_profit"] > 0:
take = price + (d["take_profit"] - price) * p.tp_mult \
if side == "long" else \
price - (price - d["take_profit"]) * p.tp_mult
if (side == "long") != (take > price):
take = 0.0
equity -= notional * FEE_RATE
positions[sym] = Position(
symbol=sym, side=side, entry=price, notional=notional,
qty=notional / price, margin=notional / p.leverage,
entry_ts=ts, stop=stop, take=take,
last_price=price, last_seen=ts,
)
open_times.append(ts)
opens_this_cycle += 1
# 3. Mark to market
mtm = equity
for pos in positions.values():
price = self.price_at(pos.symbol, cycle_id, ts) or pos.last_price
move = (price - pos.entry) / pos.entry
if pos.side == "short":
move = -move
mtm += pos.notional * move
curve.append((ts, mtm))
if mtm <= 0:
return self._metrics(equity, trades, curve, bankrupt=True)
for pos in list(positions.values()):
close_position(pos, pos.last_price or pos.entry,
cycles[-1][1], "end_of_data")
curve.append((cycles[-1][1], equity))
return self._metrics(equity, trades, curve, bankrupt=False)
def _metrics(self, equity, trades, curve, bankrupt):
peak, max_dd = -1e18, 0.0
for _, v in curve:
peak = max(peak, v)
if peak > 0:
max_dd = max(max_dd, (peak - v) / peak)
daily = {}
for ts, v in curve:
daily[ts.date()] = v
vals = list(daily.values())
rets = [(b - a) / a for a, b in zip(vals, vals[1:]) if a > 0]
sharpe = 0.0
if len(rets) > 1:
mean = sum(rets) / len(rets)
var = sum((r - mean) ** 2 for r in rets) / (len(rets) - 1)
if var > 0:
sharpe = mean / var ** 0.5 * (365 ** 0.5)
wins = sum(1 for t in trades if t.pnl > 0)
return {
"final_equity": equity,
"net_pnl": equity - self.start_equity,
"ret_pct": (equity / self.start_equity - 1) * 100,
"max_dd_pct": max_dd * 100,
"sharpe": sharpe,
"trades": len(trades),
"win_rate": wins / len(trades) * 100 if trades else 0.0,
"fees": sum(t.fees for t in trades),
"liquidations": sum(1 for t in trades if t.reason == "liquidation"),
"bankrupt": bankrupt,
}
if __name__ == "__main__":
sim = Simulator(load_dataset())
live = Params()
m = sim.run(live)
print("live-config replay:", {k: round(v, 2) if isinstance(v, float) else v
for k, v in m.items()})