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BOSSVS not working with a single feature #146
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Sorry for the delayed response. In order to train a classification algorithm, one needs several samples. In our case, a sample is a time series. This set of training samples is often called the training set. The expected format for the training set is similar to the one used in scikit-learn (if you are familiar with it):
The format is identical for the test set. Let's load a toy dataset to illustrate this: >>> from pyts.datasets import load_gunpoint
>>> X_train, X_test, y_train, y_test = load_gunpoint(return_X_y=True)
>>> X_train.shape
(50, 150) # there are 50 time series, each with 150 values.
>>> y_train.shape
(50,) # there are 50 labels because there are 50 time series in the training set.
>>> y_train
array([2, 2, 1, 1, 2, ...]) # there are 2 labels (denoted as the integers 1 and 2).
>>> X_test.shape
(150, 150) # there are 150 time series, each with 150 values.
>>> y_test.shape
(150,) # there are 150 labels because there are 150 time series in the test set. Now, one can perform classification using BOSSVS on this dataset: >>> from pyts.classification import BOSSVS
>>> clf = BOSSVS()
>>> clf.fit(X_train, y_train)
BOSSVS()
>>> clf.score(X_test, y_test)
0.82 # accuracy score of 0.82 on the test set Back to your example, I don't understand your data. It seems that you have 300 time series, but each time series has a single value. You cannot use BOSSVS with such data. You cannot do any time series analysis if the time series have a single value. It probably does not make sense to consider this kind of data as time series. Hope this helps you a bit and I would be happy to give you more info if needed, but I'm not sure to understand your data. |
Description
Class pyts.classification.BOSSVS doesn't accept timeseries of one feature.
Advices from the error message doesn't help, but leads to another error.
Steps/Code to Reproduce
I tried all the three possible versions to use timeseries of one feature:
This example gives:
It gives the following error:
ValueError: If 'window_size' is an integer, it must be greater than or equal to 1 and lower than or equal to n_timestamps if 'drop_sum=False'.
It gives the following error:
ValueError: Found input variables with inconsistent numbers of samples: [1, 300]
Versions
Thank You!
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