Python implementation of the Learning Time-Series Shapelets method, that learns a shapelet-based time-series classifier with gradient descent.

Overview

shaplets

Python implementation of the Learning Time-Series Shapelets method by Josif Grabocka et al., that learns a shapelet-based time-series classifier with gradient descent.

This implementation views the model as a layered graph, where each layer implements a forward, backword and parameters update methods (see below diagram). This abstraction simplifies thinking about the algorithm and implementing it. Network diagram

Differences from the paper

  • This implmenetation employs two (LinearLayer + SigmoidLayer) pairs instead of one (LinearLayer + SigmoidLayer) pair as in the paper (and shown in above diagram). This (using two pairs) has yielded improved results on some datasets. To have a similar setup as in the paper, simply update shapelets_lts/classification/shapelet_models.py:LtsShapeletClassifier._init_network().
  • The loss in this implementation is an updated version of the one in the paper to allow training a single model for all the classes in the dataset (rather than one model/class). The impact on performance was not analysed. For details check shapelets_lts/network/cross_entropy_loss_layer.py

Installation

git clone [email protected]:mohaseeb/shaplets-python.git
cd shaplets-python
pip install .
# or, for dev
# pip install .[dev]

Usage

from shapelets_lts.classification import LtsShapeletClassifier

# create an LtsShapeletClassifier instance
classifier = LtsShapeletClassifier(
    K=20,
    R=3,
    L_min=30,
    epocs=50,
    lamda=0.01,
    eta=0.01,
    shapelet_initialization='segments_centroids',
    plot_loss=True
)

# train the classifier. 
# train_data.shape -> (# train samples X time-series length) 
# train_label.shape -> (# train samples)
classifier.fit(train_data, train_label, plot_loss=True)

# evaluate on test data. 
# test_data.shape -> (# test samples X time-series length)
prediction = classifier.predict(test_data)

# retrieve the learnt shapelets
shapelets = classifier.get_shapelets()


# and plot sample shapelets
from shapelets_lts.util import plot_sample_shapelets
plot_sample_shapelets(shapelets=shapelets, sample_size=36)

Also have a look at example.py. For a stable training, the samples might need to be scaled.

Example plot from plot_sample_shapelets. sample_shapelets

Owner
Mohamed Haseeb
Mohamed Haseeb
Blender addon that enables exporting of xmodels from blender. Great for custom asset creation for cod games

Birdman's XModel Tools For Blender Greetings everyone in the custom cod community. This blender addon should finally enable exporting of custom assets

wast 2 Jul 02, 2022
Process GPX files (adding sensor metrics, uploading to InfluxDB, etc.) exported from imxingzhe.com

Xingzhe GPX Processor 行者轨迹处理工具 Xingzhe sells cheap GPS bike meters with sensor support including cadence, heart rate and power. But the GPX files expo

Shengqi Chen 8 Sep 23, 2022
For when you really need to rank things

Comparisonator For when you really need to rank things. Do you know that feeling when there's this urge deep within you that tells you to compare thin

Maciej Wilczyński 1 Nov 01, 2021
Hello, Welcome to this repo. don't forget to read guidelines in readme.md

Hacktoberfest_2021 If you looking for your first contribution, we are here to help. Just create a simple program using any language you like in our fo

Wafa Rifqi Anafin 117 Dec 14, 2022
京东热爱狂欢趴&京东扫码获取cookie

京东热爱狂欢趴 一键完成任务脚本来袭 活动地址: https://wbbny.m.jd.com/babelDiy/Zeus/2s7hhSTbhMgxpGoa9JDnbDzJTaBB/index.html#/home 2021-06-02更新: 1、删除京东星推官 2、更新脚本,修复火爆问题 2021

xoyi 48 Dec 28, 2022
Trusted sessions for falcon using itsdangerous.

Falcon signed sessions This project allows you to easily add trusted cookies to falcon, it works by storing a signed cookie in the client's browser us

Ward 1 Feb 08, 2022
Runs macOS on linux with qemu.

mac-on-linux-with-qemu Runs macOS on linux with qemu. Pre-requisites qemu-system-x86_64 dmg2img pulseaudio python[click] Usage After cloning the repos

Arindam Das 177 Dec 26, 2022
📙 Super lightweight function registries for your library

catalogue: Super lightweight function registries for your library catalogue is a tiny, zero-dependencies library that makes it easy to add function (o

Explosion 139 Jan 02, 2023
Code for ML, domain generation, graph generation of ABC dataset

This is the repository for codes for ML, domain generation, graph generation of Asymmetric Buckling Columns (ABC) dataset in the paper "Learning Mechanically Driven Emergent Behavior with Message Pas

Peerasait Prachaseree (Jeffrey) 0 Jan 28, 2022
My repository for the Advent of Code, starting from 2021

Advent of Code This is my repository for the Advent of Code (https://adventofcode.com/), starting from 2021. File Structure Inside each year folder, s

Yu-Ting 6 Dec 15, 2021
A proof-of-concept package manager for Cairo contracts/libraries

glyph A proof-of-concept package manager for Cairo contracts/libraries. Distribution through pypi. Installation through existing package managers -- p

Sam Barnes 11 Jun 06, 2022
Multiple GNOME terminals in one window

Terminator by Chris Jones [email protected] and others. Description Terminator was

GNOME Terminator 1.5k Jan 01, 2023
Python program to start your zoom meetings

zoomstarter Python programm to start your zoom meetings More about Initially this was a bash script for starting zoom meetings, but as i started devel

Viktor Cvetanovic 2 Nov 24, 2021
A repository containing an introduction to Panel made to be support videos and talks.

👍 Awesome Panel - Introduction to Panel THIS REPO IS WORK IN PROGRESS. PRE-ALPHA Panel is a very powerful framework for exploratory data analysis and

Marc Skov Madsen 51 Nov 17, 2022
Home Assistant integration for spanish electrical data providers (e.g., datadis)

homeassistant-edata Esta integración para Home Assistant te permite seguir de un vistazo tus consumos y máximas potencias alcanzadas. Para ello, se ap

VMG 163 Jan 05, 2023
Push a record and you will receive a email when that date

Push a record and you will receive a email when that date

5 Nov 28, 2022
This an Anki add on that automatically converts Notion notes into Anki flash cards. Currently in development!

NotionFlash This is an Anki add on in development that will allow automatically convert your Notion study notes into Anki flash cards. The Anki deck c

Neeraj Patel 10 Oct 07, 2022
CNKD - Minimalistic Windows ransomware written in Python

CNKD Minimalistic Windows ransomware written in Python (Still a work in progress

Alex 2 May 27, 2022
This script can be used to get unlimited Gb for WARP.

Warp-Unlimited-GB This script can be used to get unlimited Gb for WARP. How to use Change the value of the 'referrer' to warp id of yours You can down

Anix Sam Saji 1 Feb 14, 2022