Search Results for author: Ahmed Shifaz

Found 3 papers, 3 papers with code

Elastic Similarity and Distance Measures for Multivariate Time Series

1 code implementation20 Feb 2021 Ahmed Shifaz, Charlotte Pelletier, Francois Petitjean, Geoffrey I. Webb

Elastic similarity and distance measures are a class of similarity measures that can compensate for misalignments in the time axis of time series data.

Classification Dynamic Time Warping +5

TS-CHIEF: A Scalable and Accurate Forest Algorithm for Time Series Classification

2 code implementations25 Jun 2019 Ahmed Shifaz, Charlotte Pelletier, Francois Petitjean, Geoffrey I. Webb

We demonstrate that TS-CHIEF can be trained on 130k time series in 2 days, a data quantity that is beyond the reach of any TSC algorithm with comparable accuracy.

Attribute General Classification +3

Proximity Forest: An effective and scalable distance-based classifier for time series

4 code implementations31 Aug 2018 Benjamin Lucas, Ahmed Shifaz, Charlotte Pelletier, Lachlan O'Neill, Nayyar Zaidi, Bart Goethals, Francois Petitjean, Geoffrey I. Webb

We demonstrate on a 1M time series Earth observation dataset that Proximity Forest retains this accuracy on datasets that are many orders of magnitude greater than those in the UCR repository, while learning its models at least 100, 000 times faster than current state of the art models Elastic Ensemble and COTE.

Attribute Earth Observation +4

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