Does tsfresh support different time series lengths?
Yes, it supports different time series lengths. However, some feature calculators can demand a minimal length of the time series. If a shorter time series is passed to the calculator, a NaN is returned for those features.
Is it possible to extract features from rolling/shifted time series?
tsfresh.dataframe_functions.roll_time_series()function allows to conviniently create a rolled time series datframe from your data. You just have to transform your data into one of the supported tsfresh Data Formats. Then, the
tsfresh.dataframe_functions.roll_time_series()give you a DataFrame with the rolled time series, that you can pass to tsfresh. On the following page you can find a detailed description: How to handle rolling time series.
How can I use tsfresh with windows?conda create -n ENV_NAME python=VERSION conda install -n ENV_NAME pip requests numpy pandas scipy statsmodels patsy scikit-learn future six tqdm activate ENV_NAME pip install tsfresh
Does tsfresh support different sampling rates in the time series?
Yes! The feature calculators in tsfresh do not care about the sampling frequency. You will have to use the second input format, the stacked DataFramed (see Data Formats)