166 lines
7.3 KiB
Python
166 lines
7.3 KiB
Python
"""四路子因子构造。输入日期区间 [start, end]（YYYY-MM-DD），输出
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DataFrame[trade_date, stock_code, factor_value]，全部限制在 KG 覆盖池 universe 内。
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stock_code 输出形态不限，common.write_factor 统一转前缀式。
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建模参数（EVENT_POLARITY / *_HALF_LIFE / *_WINDOW）是**因子决策**，见设计文档
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§3.3 与 §8-3，此处取草案默认，待用户确认后调。方向(direction)统一在合成配置里声明，
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子因子表只存原始值——但 event 天然带符号，故此处保留极性。
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"""
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import numpy as np
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import pandas as pd
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import config
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import common
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import db
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FACTORS = {
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"akg_upside": "t_factor_akg_upside",
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"akg_heat": "t_factor_akg_heat",
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"akg_event": "t_factor_akg_event",
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"akg_transmission": "t_factor_akg_transmission",
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}
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# ---- 事件极性草案（§3.3，待 §8-3 确认）----
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EVENT_POLARITY = {
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"股份回购": 1.0, "重大合同中标": 1.0, "股权激励授予": 0.5,
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"诉讼仲裁": -1.0, "行政处罚": -1.0, "股权质押": -0.5,
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"发行上市": 0.0, "并购交割": 0.0, "other": 0.0,
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# 增减持 / 业绩预告：符号取决于 direction（下 EVENT_DIR）
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"增减持": 0.0, "业绩预告": 0.0,
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}
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EVENT_DIR = {"预增": 1.0, "预减": -1.0, "增持": 1.0, "减持": -1.0}
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EVENT_HALF_LIFE = 10 # 交易日
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EVENT_WINDOW = 60 # 交易日（超窗不计）
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_EMPTY = pd.DataFrame(columns=["trade_date", "stock_code", "factor_value"])
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# ---------------------------------------------------------------- 热度
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def build_heat(start, end):
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"""热度 = stock_fund_heat_scores 最新批次 score（0~1）。stock_code 已前缀式。"""
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uni = {common.to_prefix(x) for x in common.load_universe()}
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df = db.read_mysql("heat",
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"""SELECT s.trade_date, s.stock_code, s.score AS factor_value
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FROM stock_fund_heat_scores s
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JOIN (SELECT trade_date, MAX(batch_no) bn FROM stock_fund_heat_scores
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WHERE trade_date BETWEEN %s AND %s GROUP BY trade_date) m
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ON m.trade_date = s.trade_date AND m.bn = s.batch_no""",
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(start, end))
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if df.empty:
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return _EMPTY
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df["stock_code"] = df["stock_code"].astype(str).str.strip()
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df["factor_value"] = pd.to_numeric(df["factor_value"], errors="coerce")
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df = df[df["stock_code"].isin(uni)]
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return df[["trade_date", "stock_code", "factor_value"]]
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# ---------------------------------------------------------------- 预期空间
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def build_upside(start, end):
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"""upside = 一致预期目标价中枢 / 当日现价 − 1（as-of：现价日取 asof<=当日最新一致预期）。
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现价来自平台 gp_day_data（代码列 config.PRICE_CODE_COL，待实机核实）。"""
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uni = common.load_universe()
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cons = db.read_pg(
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"SELECT ts_code, asof_date, target_mid_avg FROM v_factor_consensus WHERE asof_date <= %s",
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(end,))
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cons = cons[cons["ts_code"].isin(uni)].copy()
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if cons.empty:
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return _EMPTY
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col = config.PRICE_CODE_COL
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price = db.read_mysql("price",
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f"SELECT `timestamp` AS trade_date, `{col}` AS ts_code, close "
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f"FROM gp_day_data WHERE `timestamp` BETWEEN %s AND %s", (start, end))
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if price.empty:
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return _EMPTY
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price["close"] = pd.to_numeric(price["close"], errors="coerce")
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# 归一到前缀式两边对齐（gp_day_data 代码形态不定 → 都折前缀式后 join）
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price["k"] = price["ts_code"].map(common.to_prefix)
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price = price[(price["close"] > 0)].dropna(subset=["close"])
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cons["k"] = cons["ts_code"].map(common.to_prefix)
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cons = cons[cons["k"].isin(set(price["k"]))]
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if cons.empty:
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return _EMPTY
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cons["asof_date"] = pd.to_datetime(cons["asof_date"])
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price["trade_date"] = pd.to_datetime(price["trade_date"])
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out = []
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cons_sorted = cons.sort_values("asof_date")
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for k, pg in price.groupby("k"):
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cg = cons_sorted[cons_sorted["k"] == k]
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if cg.empty:
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continue
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m = pd.merge_asof(pg.sort_values("trade_date"),
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cg[["asof_date", "target_mid_avg"]],
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left_on="trade_date", right_on="asof_date", direction="backward")
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m = m.dropna(subset=["target_mid_avg"])
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if m.empty:
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continue
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m["factor_value"] = m["target_mid_avg"].astype(float) / m["close"] - 1.0
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m["stock_code"] = k
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out.append(m[["trade_date", "stock_code", "factor_value"]])
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return pd.concat(out) if out else _EMPTY
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# ---------------------------------------------------------------- 事件
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def _polarity(event_type, direction):
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d = (direction or "").strip()
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if d in EVENT_DIR:
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return EVENT_DIR[d]
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return EVENT_POLARITY.get(event_type, 0.0)
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def build_event(start, end):
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"""事件分 = Σ 近窗口内事件 极性 × 时间衰减（exp(-交易日龄·ln2/半衰期)）。
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ts_code 取文档锚（v_factor_events 已解析）。无事件的股当天不出行（= 缺 → 合成侧填 0）。"""
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uni = common.load_universe()
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look = (pd.Timestamp(start) - pd.Timedelta(days=EVENT_WINDOW * 2)).date()
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ev = db.read_pg(
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"SELECT ts_code, disclosure_date, event_type, direction "
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"FROM v_factor_events WHERE disclosure_date BETWEEN %s AND %s", (look, end))
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ev = ev[ev["ts_code"].isin(uni)].copy()
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if ev.empty:
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return _EMPTY
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ev["pol"] = [_polarity(t, d) for t, d in zip(ev["event_type"], ev["direction"])]
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ev = ev[ev["pol"] != 0.0]
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if ev.empty:
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return _EMPTY
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cal = common.trading_days(start, end)
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if not cal:
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return _EMPTY
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cal = pd.DatetimeIndex(cal)
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decay = np.log(2) / EVENT_HALF_LIFE
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rows = []
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for ts, g in ev.groupby("ts_code"):
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disc = pd.to_datetime(g["disclosure_date"]).values.astype("datetime64[ns]")
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pol = g["pol"].to_numpy(dtype=float)
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for d in cal:
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# 自然日龄 → 交易日龄近似 ×(5/7)（v1 近似，见 README 待优化项）
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age_td = ((d.value - disc.astype("int64")) / 86_400e9) * (5.0 / 7.0)
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mask = (age_td >= 0) & (age_td <= EVENT_WINDOW)
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if not mask.any():
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continue
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val = float((pol[mask] * np.exp(-age_td[mask] * decay)).sum())
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if val != 0.0:
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rows.append((d.date(), ts, val))
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return pd.DataFrame(rows, columns=["trade_date", "stock_code", "factor_value"]) if rows else _EMPTY
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# ---------------------------------------------------------------- 传导
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def build_transmission(start, end):
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"""传导分 = 指向该股所在环节的路径数 ×（1 − 已动比例）；同股同日多候选取最大。"""
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uni = common.load_universe()
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tr = db.read_pg(
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"SELECT scan_date, ts_code, n_paths, moved_ratio "
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"FROM v_factor_transmission WHERE scan_date BETWEEN %s AND %s", (start, end))
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tr = tr[tr["ts_code"].isin(uni)].copy()
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if tr.empty:
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return _EMPTY
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tr["factor_value"] = (tr["n_paths"].astype(float)
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* (1.0 - pd.to_numeric(tr["moved_ratio"], errors="coerce").fillna(0.0)))
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g = (tr.groupby(["scan_date", "ts_code"])["factor_value"].max().reset_index()
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.rename(columns={"scan_date": "trade_date", "ts_code": "stock_code"}))
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return g[["trade_date", "stock_code", "factor_value"]]
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BUILDERS = {
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"akg_upside": build_upside, "akg_heat": build_heat,
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"akg_event": build_event, "akg_transmission": build_transmission,
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}
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