featuretools.primitives.CumulativeTimeSinceLastFalse#

class featuretools.primitives.CumulativeTimeSinceLastFalse[source]#

Determines the time since last False value.

Description:

Given a list of booleans and a list of corresponding datetimes, determine the time at each point since the last False value. Returns time difference in seconds. NaN values are ignored.

Examples

>>> from datetime import datetime
>>> cumulative_time_since_last_false = CumulativeTimeSinceLastFalse()
>>> booleans = [False, True, False, True]
>>> datetimes = [
...     datetime(2011, 4, 9, 10, 30, 0),
...     datetime(2011, 4, 9, 10, 30, 10),
...     datetime(2011, 4, 9, 10, 30, 15),
...     datetime(2011, 4, 9, 10, 30, 29)
... ]
>>> cumulative_time_since_last_false(datetimes, booleans).tolist()
[0.0, 10.0, 0.0, 14.0]
__init__()#

Methods

__init__()

flatten_nested_input_types(input_types)

Flattens nested column schema inputs into a single list.

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