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因子逻辑
财务因子 · 盈利能力：研发费用相对于营业总收入比率（滚动12期），取平台表 cn_stock_factors_financial_indicators 的 research_develop_to_total_revenue_ttm 列原值。
BigQuant SQL
SELECT date, instrument, research_develop_to_total_revenue_ttm AS factorFROM cn_stock_factors_financial_indicatorsORDER BY date, instrumentbq examples new strategies/multi_factor.py bqf_10501_strategy.py --name '研发费用比营业总收入（滚动12期） 选股' \ --set 'TABLES=["cn_stock_factors_financial_indicators"]' --set 'FACTORS=["research_develop_to_total_revenue_ttm"]' --set 'HOLD=30' \ --set 'EVERY=20' --set 'BENCHMARK="000300.SH"' --set 'START="2021-01-01"' \ --set 'END="2026-09-23"' \ && python bqf_10501_strategy.pySELECT date, instrument, research_develop_to_total_revenue_ttm FROM cn_stock_factors_financial_indicators带入当前因子，在 Cowork 中继续研究。
from bigquant import factor
values = factor.values(["BQF_10501"], "2021-01-01", "2026-09-23")report = factor.analyze( values, start_date="2021-01-01", end_date="2026-09-23", universe=("all", "hs300"), neutralize=(None, "size+industry"), depth="deep",)report.render()