Popularity
6.7
Declining
Activity
0.0
Stable
18
6
1

Monthly Downloads: 10
Programming language: Haskell
License: MIT License
Latest version: v1.0.3.0

dtw alternatives and similar packages

Based on the "Algorithms" category.
Alternatively, view dtw alternatives based on common mentions on social networks and blogs.

Do you think we are missing an alternative of dtw or a related project?

Add another 'Algorithms' Package

README

Build Status

This module implements dynamic time warping as described on Wikipedia

Additionally 'fastDtw' is implemented as described in the paper: "FastDTW: Toward Accurate Dynamic Time Warping in Linear Time and Space" by Stan Salvador and Philip Chan.

For further information see the documentation of the Data.DTW module.

Example

>>> -- create two sample datasets
>>> let as = [ sin x | x <- [0,0.1..pi] ]
>>> let bs = [ sin (x+0.1) | x <- [0,0.1..pi] ]
>>> -- define a cost function between two datapoints
>>> let dist x y = abs (x-y)
>>> -- define a function that will half the size of a dataset (see below)
>>> let shrink xs = case xs of (a:b:cs) -> (a+b)/2 : shrink cs; a:[] -> [a]; [] -> []
>>> -- calculate the cost with fastDtw and dtwMemo for comparison
>>> cost $ fastDtw dist shrink 2 as bs :: Float
>>> 0.19879311
>>> cost $ dtwMemo (\x y -> abs (x-y)) as bs :: Float
>>> 0.19879311