costaware_ects's Introduction

Preamble

This code is the one used to generate results presented in the paper Cost-Aware Early Classification of Time Series. When using this code, please cite:

@InProceedings{costaware2016,  
    authors={Romain Tavenard and Simon Malinowski},
    title={Cost-Aware Early Classification of Time Series},
    booktitle={European Conference on Machine Learning and Principles and Practice of Knowledge Discovery},
    pages = {632-647},
    year={2016}
}

Requirements

For this code to run properly, the following python packages should be installed:

numpy  
scipy  
sklearn

Also, if one wants to run experiments on the UCR dataset, she should download it from here and paste it (preserving its subfolder structure) to datasets/ucr.

Running

Baseline (Dachraoui et al., ECML 2015)

To run the baseline on dataset FISH with $\beta=0.001$, run:

SOURCEDIR=/path/to/the/base/dir/of/the/project/
WORKINGDIR=${SOURCEDIR}/classification/
EXECUTABLE=${SOURCEDIR}/classification/baseline_ucr.py
export PYTHONPATH="${PYTHONPATH}:${SOURCEDIR}"
cd ${WORKINGDIR}
python ${EXECUTABLE} FISH 0.001

2Step

To run the 2Step method on dataset FISH with $\beta=0.001$, run:

SOURCEDIR=/path/to/the/base/dir/of/the/project/
WORKINGDIR=${SOURCEDIR}/classification/
EXECUTABLE=${SOURCEDIR}/classification/2step_classif_ucr.py
export PYTHONPATH="${PYTHONPATH}:${SOURCEDIR}"
cd ${WORKINGDIR}
python ${EXECUTABLE} FISH 0.001

NoCluster

To run the NoCluster method on dataset FISH with $\beta=0.001$, run:

SOURCEDIR=/path/to/the/base/dir/of/the/project/
WORKINGDIR=${SOURCEDIR}/classification/
EXECUTABLE=${SOURCEDIR}/classification/nocluster_ucr.py
export PYTHONPATH="${PYTHONPATH}:${SOURCEDIR}"
cd ${WORKINGDIR}
python ${EXECUTABLE} FISH 0.001

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