Defensive timeseries analytics
A python package for defensive timeseries analytics.
All code needs to make assumptions about the data it uses: its shape, content, or format.
But constantly checking and re-checking the assumptions can make the code unwieldy.
Timeseries data presents additional complications in that many common python packages, such as
scikitlearn, expect 2-dimensional, static data.
timekeep protects your timeseries data by providing simple decorators to check those assumptions.
timekeep is heavily inspired by
engarde, but does not share its assumption about
data being a
How to install
timekeep is available from PyPi. Run
pip install timekeep
timekeep is currently on version
0.1.0 and is in active development. As the version reflects,
the codebase is liable to change. Once main functionality has been applied, a stable version
will be released.
How to use
timekeep provides decorators to be used on functions which return a timeseries dataset.
Each decorator checks an assumption about the data and raises an error if this assumption is not met.
import numpy as np import timekeep.decorators as tkd # Check that data returned from wont_raise # has shape (-1, 10, 2) @tkd.is_shape((-1, 10, 2)) def wont_raise(): return np.random.random((10, 10, 2)) # Check that data returned from will_raise is a # timeseries dataset (has three dimensions) @tkd.is_timeseries def will_raise(): return np.random.random((10, 2))
Another key feature of
timekeep is conversion between timeseries data formats;
timekeep can convert between
tslearn style timeseries dataset and
sklearn datasets, with support for
datasets in progress. The conversion functions can be applied as decorators to methods and functions to automatically
convert your data as you supply it. For example:
import numpy as np import timekeep.conversion as tkc from sklearn.preprocessing import PCA # Convert timeseries dataset to sklearn for input into sklearn.preprocessing.PCA @tkc.convert_timeseries_input def run_pca_on_timeseries(data): return PCA().fit(data) timeseries_data = np.random.random((10, 100, 2)) run_pca_on_timeseries(timeseries_data)
Any and all help welcome. Please see the contributing guide.
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