featuretools.primitives.MedianWordLength

class featuretools.primitives.MedianWordLength(delimiters_regex='[ \n\t]')

确定中位单词长度.

Description:

给定字符串列表,确定每个字符串中单词长度的中位数.单词定义为 由分隔符分隔的任意字符序列.如果字符串为空或`NaN`,则返回`NaN`.

Parameters:

delimiters_regex (str) – 用于将文本分割成单词的分隔符正则表达式字符串. 默认为空白字符.

Examples

>>> x = ['This is a test file', 'This is second line', 'third line $1,000', None]
>>> median_word_length = MedianWordLength()
>>> median_word_length(x).tolist()
[4.0, 4.0, 5.0, nan]

__init__(delimiters_regex='[ \n\t]')

Methods

__init__([delimiters_regex])
flatten_nested_input_types(input_types)	将嵌套的列模式输入展平成一个列表.
generate_name(base_feature_names)
generate_names(base_feature_names)
get_args_string()
get_arguments()
get_description(input_column_descriptions[, ...])
get_filepath(filename)
get_function()

Attributes

base_of
base_of_exclude
commutative
default_value	Default value this feature returns if no data found.
description_template
input_types	woodwork.ColumnSchema types of inputs
max_stack_depth
name	Name of the primitive
number_output_features	Number of columns in feature matrix associated with this feature
return_type	ColumnSchema type of return
stack_on
stack_on_exclude
stack_on_self
uses_calc_time
uses_full_dataframe