个股与大盘的相对涨幅,如何处理比较方便


(oversky2003) #1

个股有因子daily_return_$i和return_$i,可以很方便拿到相对收益。但是拿个股和大盘连续多天的相对收益,怎么处理比较方便?

我现在的水平还停留在可以写一个“自定义python模块“求出某一个大盘指数的收益。好像因子库的因子数据只是股票,不包含大盘指数的,对吗?


(达达) #2

可以参考这个帖子


(oversky2003) #3

我就是参照你这个帖子去计算纯指数的收益率。能把指数也放到因子库吗?这样计算个股和大盘两者的相对收益就简单很多了,直接相除就行了。能写一个例子如何构造个股和指数的相对收益吗?


(达达) #4
克隆策略

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    In [30]:
    # 本代码由可视化策略环境自动生成 2019年8月14日 11:59
    # 本代码单元只能在可视化模式下编辑。您也可以拷贝代码,粘贴到新建的代码单元或者策略,然后修改。
    
    
    # 回测引擎:初始化函数,只执行一次
    def m8_initialize_bigquant_run(context):
        # 加载预测数据
        context.ranker_prediction = context.options['data'].read_df()
    
        # 系统已经设置了默认的交易手续费和滑点,要修改手续费可使用如下函数
        context.set_commission(PerOrder(buy_cost=0.0003, sell_cost=0.0013, min_cost=5))
        # 预测数据,通过options传入进来,使用 read_df 函数,加载到内存 (DataFrame)
        # 设置买入的股票数量,这里买入预测股票列表排名靠前的5只
        stock_count = 5
        # 每只的股票的权重,如下的权重分配会使得靠前的股票分配多一点的资金,[0.339160, 0.213986, 0.169580, ..]
        context.stock_weights = T.norm([1 / math.log(i + 2) for i in range(0, stock_count)])
        # 设置每只股票占用的最大资金比例
        context.max_cash_per_instrument = 0.2
        context.hold_days = 5
    
    # 回测引擎:每日数据处理函数,每天执行一次
    def m8_handle_data_bigquant_run(context, data):
        # 按日期过滤得到今日的预测数据
        ranker_prediction = context.ranker_prediction[
            context.ranker_prediction.date == data.current_dt.strftime('%Y-%m-%d')]
    
        # 1. 资金分配
        # 平均持仓时间是hold_days,每日都将买入股票,每日预期使用 1/hold_days 的资金
        # 实际操作中,会存在一定的买入误差,所以在前hold_days天,等量使用资金;之后,尽量使用剩余资金(这里设置最多用等量的1.5倍)
        is_staging = context.trading_day_index < context.hold_days # 是否在建仓期间(前 hold_days 天)
        cash_avg = context.portfolio.portfolio_value / context.hold_days
        cash_for_buy = min(context.portfolio.cash, (1 if is_staging else 1.5) * cash_avg)
        cash_for_sell = cash_avg - (context.portfolio.cash - cash_for_buy)
        positions = {e.symbol: p.amount * p.last_sale_price
                     for e, p in context.perf_tracker.position_tracker.positions.items()}
    
        # 2. 生成卖出订单:hold_days天之后才开始卖出;对持仓的股票,按StockRanker预测的排序末位淘汰
        if not is_staging and cash_for_sell > 0:
            equities = {e.symbol: e for e, p in context.perf_tracker.position_tracker.positions.items()}
            instruments = list(reversed(list(ranker_prediction.instrument[ranker_prediction.instrument.apply(
                    lambda x: x in equities and not context.has_unfinished_sell_order(equities[x]))])))
            # print('rank order for sell %s' % instruments)
            for instrument in instruments:
                context.order_target(context.symbol(instrument), 0)
                cash_for_sell -= positions[instrument]
                if cash_for_sell <= 0:
                    break
    
        # 3. 生成买入订单:按StockRanker预测的排序,买入前面的stock_count只股票
        buy_cash_weights = context.stock_weights
        buy_instruments = list(ranker_prediction.instrument[:len(buy_cash_weights)])
        max_cash_per_instrument = context.portfolio.portfolio_value * context.max_cash_per_instrument
        for i, instrument in enumerate(buy_instruments):
            cash = cash_for_buy * buy_cash_weights[i]
            if cash > max_cash_per_instrument - positions.get(instrument, 0):
                # 确保股票持仓量不会超过每次股票最大的占用资金量
                cash = max_cash_per_instrument - positions.get(instrument, 0)
            if cash > 0:
                context.order_value(context.symbol(instrument), cash)
    
    # 回测引擎:准备数据,只执行一次
    def m8_prepare_bigquant_run(context):
        pass
    
    # 回测引擎:每个单位时间开始前调用一次,即每日开盘前调用一次。
    def m8_before_trading_start_bigquant_run(context, data):
        pass
    
    
    m5 = M.input_features.v1(
        features="""
    # #号开始的表示注释,注释需单独一行
    # 多个特征,每行一个,可以包含基础特征和衍生特征,特征须为本平台特征
    ret_0=close_0/shift(close_0,1)
    avg_turn_9/2"""
    )
    
    m6 = M.instruments.v2(
        start_date='2015-01-01',
        end_date='2018-01-01',
        market='CN_STOCK_A',
        instrument_list='',
        max_count=0
    )
    
    m4 = M.general_feature_extractor.v7(
        instruments=m6.data,
        features=m5.data,
        start_date='',
        end_date='',
        before_start_days=90
    )
    
    m11 = M.derived_feature_extractor.v3(
        input_data=m4.data,
        features=m5.data,
        date_col='date',
        instrument_col='instrument',
        drop_na=True,
        remove_extra_columns=True,
        user_functions={}
    )
    
    m10 = M.advanced_auto_labeler.v2(
        instruments=m6.data,
        label_expr="""# #号开始的表示注释
    # 0. 每行一个,顺序执行,从第二个开始,可以使用label字段
    # 1. 可用数据字段见 https://bigquant.com/docs/data_history_data.html
    #   添加benchmark_前缀,可使用对应的benchmark数据
    # 2. 可用操作符和函数见 `表达式引擎 <https://bigquant.com/docs/big_expr.html>`_
    
    # 计算收益:5日收盘价(作为卖出价格)除以明日开盘价(作为买入价格)
    shift(close, -5) / shift(open, -1)
    
    # 极值处理:用1%和99%分位的值做clip
    clip(label, all_quantile(label, 0.01), all_quantile(label, 0.99))
    
    # 将分数映射到分类,这里使用20个分类
    all_wbins(label, 20)
    
    # 过滤掉一字涨停的情况 (设置label为NaN,在后续处理和训练中会忽略NaN的label)
    where(shift(high, -1) == shift(low, -1), NaN, label)
    """,
        start_date='',
        end_date='',
        benchmark='000300.SHA',
        drop_na_label=True,
        cast_label_int=True,
        user_functions={}
    )
    
    m15 = M.input_features.v1(
        features="""
    # #号开始的表示注释,注释需单独一行
    # 多个特征,每行一个,可以包含基础特征和衍生特征,特征须为本平台特征
    close/shift(close,1)-1
    """
    )
    
    m3 = M.index_feature_extract.v2(
        input_1=m6.data,
        input_2=m15.data,
        before_days=100,
        index='000300.HIX'
    )
    
    m1 = M.join.v3(
        data1=m3.data_1,
        data2=m11.data,
        on='date',
        how='inner',
        sort=False
    )
    
    m16 = M.instruments.v2(
        start_date='2019-01-01',
        end_date='2019-06-01',
        market='CN_STOCK_A',
        instrument_list='',
        max_count=0
    )
    
    m14 = M.index_feature_extract.v2(
        input_1=m16.data,
        input_2=m15.data,
        before_days=100,
        index='000300.HIX'
    )
    
    m17 = M.general_feature_extractor.v7(
        instruments=m16.data,
        features=m5.data,
        start_date='',
        end_date='',
        before_start_days=90
    )
    
    m18 = M.derived_feature_extractor.v3(
        input_data=m17.data,
        features=m5.data,
        date_col='date',
        instrument_col='instrument',
        drop_na=True,
        remove_extra_columns=True,
        user_functions={}
    )
    
    m2 = M.join.v3(
        data1=m18.data,
        data2=m14.data_1,
        on='date',
        how='inner',
        sort=False
    )
    
    m7 = M.input_features.v1(
        features="""
    # #号开始的表示注释,注释需单独一行
    # 多个特征,每行一个,可以包含基础特征和衍生特征,特征须为本平台特征
    relative_ret=ret_0-bm_0
    """
    )
    
    m13 = M.derived_feature_extractor.v3(
        input_data=m1.data,
        features=m7.data,
        date_col='date',
        instrument_col='instrument',
        drop_na=False,
        remove_extra_columns=False,
        user_functions={}
    )
    
    m12 = M.join.v3(
        data1=m10.data,
        data2=m13.data,
        on='date,instrument',
        how='inner',
        sort=False
    )
    
    m19 = M.features_add.v1(
        input_1=m7.data,
        input_2=m5.data
    )
    
    m20 = M.derived_feature_extractor.v3(
        input_data=m2.data,
        features=m7.data,
        date_col='date',
        instrument_col='instrument',
        drop_na=False,
        remove_extra_columns=False,
        user_functions={}
    )
    
    m9 = M.stock_ranker.v2(
        training_ds=m12.data,
        features=m19.data_1,
        predict_ds=m20.data,
        learning_algorithm='排序',
        number_of_leaves=30,
        minimum_docs_per_leaf=1000,
        number_of_trees=20,
        learning_rate=0.1,
        max_bins=1023,
        feature_fraction=1,
        slim_data=True
    )
    
    m8 = M.trade.v4(
        instruments=m16.data,
        options_data=m9.predictions,
        start_date='',
        end_date='',
        initialize=m8_initialize_bigquant_run,
        handle_data=m8_handle_data_bigquant_run,
        prepare=m8_prepare_bigquant_run,
        before_trading_start=m8_before_trading_start_bigquant_run,
        volume_limit=0.025,
        order_price_field_buy='open',
        order_price_field_sell='close',
        capital_base=1000000,
        auto_cancel_non_tradable_orders=True,
        data_frequency='daily',
        price_type='后复权',
        product_type='股票',
        plot_charts=True,
        backtest_only=False,
        benchmark=''
    )
    
    设置测试数据集,查看训练迭代过程的NDCG
    bigcharts-data-start/{"__id":"bigchart-e52df06ee4c64a29908eb3a106e8fdde","__type":"tabs"}/bigcharts-data-end
    设置测试数据集,查看训练迭代过程的NDCG
    bigcharts-data-start/{"__id":"bigchart-2ef8544f98e04300a9b0cfcb2f061b4c","__type":"tabs"}/bigcharts-data-end
    • 收益率29.88%
    • 年化收益率94.56%
    • 基准收益率20.56%
    • 阿尔法0.29
    • 贝塔0.79
    • 夏普比率2.55
    • 胜率0.58
    • 盈亏比1.3
    • 收益波动率26.35%
    • 信息比率0.07
    • 最大回撤12.32%
    bigcharts-data-start/{"__id":"bigchart-6f5a93a653a5472fa192b61dfc215d91","__type":"tabs"}/bigcharts-data-end

    (oversky2003) #5

    报错如下:

    还有bm0,没有看到你是怎么来的。补充:通过查看结果数据,看到了。出来的变量默认就是bm_0