Source code for featuretools.primitives.standard.aggregation.count_above_mean

import numpy as np
from woodwork.column_schema import ColumnSchema
from woodwork.logical_types import IntegerNullable

from featuretools.primitives.base.aggregation_primitive_base import AggregationPrimitive


class CountAboveMean(AggregationPrimitive):
    """    计算高于均值的数值个数.

    Args:

        skipna (bool): 确定是否使用NA/null值.默认为True,跳过NA/null.

    Examples:

        >>> count_above_mean = CountAboveMean()
        >>> count_above_mean([1, 2, 3, 4, 5])
        2

        NaN的处理方式可以控制.

        >>> count_above_mean_skipna = CountAboveMean(skipna=False)
        >>> count_above_mean_skipna([1, 2, 3, 4, 5, None])
        nan"""

    name = "count_above_mean"
    input_types = [ColumnSchema(semantic_tags={"numeric"})]
    return_type = ColumnSchema(logical_type=IntegerNullable, semantic_tags={"numeric"})
    stack_on_self = False

    def __init__(self, skipna=True):
        self.skipna = skipna

    def get_function(self):
        def count_above_mean(x):
            mean = x.mean(skipna=self.skipna)
            if np.isnan(mean):
                return np.nan
            return len(x[x > mean])

        return count_above_mean