# What’s new¶

## v0.1.6 (July 2023)¶

This version requires numba >= 0.57.

Allow readonly arrays in numba jit signature. https://github.com/raphaelvallat/antropy/pull/23

Improved sample entropy kernel. https://github.com/raphaelvallat/antropy/pull/25

Fox for KDTree.valid_metrics which is method since sklearn 1.3. https://github.com/raphaelvallat/antropy/pull/30

## v0.1.5 (December 2022)¶

`antropy.perm_entropy()`

will now return the average entropy across all delays if a list or range of delays is provided.Handle the limit of p = 0 in functions that evaluate the product p * log2(p), to give 0 instead of nan (see PR3).

`antropy.detrended_fluctuation()`

will now return alpha = 0 when the correlation coefficient of the fluctuations of an input signal is 0 (see PR21).

## v0.1.4 (April 2021)¶

Important

The package has now been renamed AntroPy (previously EntroPy)!

Faster implementation of

`antropy.lziv_complexity()`

(see PR1). Among other improvements, strings are now mapped to UTF-8 integer representations.

## v0.1.3 (March 2021)¶

Added the

`entropy.num_zerocross()`

function to calculate the (normalized) number of zero-crossings on N-D data.Added the

`entropy.hjorth_params()`

function to calculate the mobility and complexity Hjorth parameters on N-D data.Add support for N-D data in

`entropy.spectral_entropy()`

,`entropy.petrosian_fd()`

and`entropy.katz_fd()`

.Use the stochastic package to generate stochastic time-series.

## v0.1.2 (May 2020)¶

`entropy.lziv_complexity()`

now works with non-binary sequence (e.g. “12345” or “Hello World!”)The average fluctuations in

`entropy.detrended_fluctuation()`

is now calculated using the root mean square instead of a simple arithmetic. For more details, please refer to this GitHub issue.Updated flake8

## v0.1.1 (November 2019)¶

Added Lempel-Ziv complexity (

`entropy.lziv_complexity()`

) for binary sequence.

## v0.1.0 (October 2018)¶

Initial release.

Permutation entropy

Spectral entropy

Singular value decomposition entropy

Approximate entropy

Sample entropy

Petrosian Fractal Dimension

Katz Fractal Dimension

Higuchi Fractal Dimension

Detrended fluctuation analysis