tardis.utils#

Utilities module.

This module collects some utility functions, making them accessible to a wider number of modules.

tardis.utils.load_data(filename, batch_size, n_query_points, seed=None)[source]#

Load data from filename, depending on input type.

Parameters:

  • filename (str) – If this points to a file name, the function will attempt to load said file and parse it. Else, the function will consider this as the name of a data set to load.

  • batch_size (int) – Number of points to sample from data set.

  • n_query_points (int) – Number of points to use for the subsequent Euclidicity calculations. It is possible to use the full data set.

  • seed (int, instance of np.random.Generator, or None) – Seed for the random number generator, or an instance of such a generator. If set to None, the default random number generator will be used.

Returns:

The (subsampled) data set along with its query points is returned.

Return type:

Tuple of np.array, np.array

tardis.utils.estimate_scales(X, query_points, k_max)[source]#

Perform simple scale estimation of the data set.

Parameters:

k_max (int) – Maximum number of neighbours to consider for the local scale estimation.

Returns:

A list of dictionaries consisting of the minimum and maximum inner and outer radius, respectively.

Return type:

List of dict