FEATURE SELECTION
First Claim
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1. A method of automatically selecting features as an input to a classifier for a plurality of classes including calculating an estimate of the area under a receiver operating characteristic curve for each class of the classifier, and selecting the said features in dependence upon the said estimates.
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Abstract
A method of feature selection applicable to both forward selection and backward elimination of features is provided. The method selects features to be used as an input for a classifier based on an estimate of the area under the ROC curve of each of the classifiers. Exemplary applications are in homecare or patient monitoring, body sensor networks, environmental monitoring, image processing and questionnaire design.
11 Citations
30 Claims
- 1. A method of automatically selecting features as an input to a classifier for a plurality of classes including calculating an estimate of the area under a receiver operating characteristic curve for each class of the classifier, and selecting the said features in dependence upon the said estimates.
- 20. A method of defining a sensor network of a plurality of sensors in an environment including acquiring a data set of features corresponding to the sensors and selecting features as an input to a classifier for a plurality of classes including calculating an estimate of the area under a receiver operating characteristic curve for each class of the classifier, and selecting the said features in dependence upon the said estimates.
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22. A sensor network of a plurality of sensors in an environment by the process of:
- acquiring a data set of features corresponding to the sensors and selecting features as an input to a classifier for a plurality of classes including calculating an estimate of the area under a receiver operating characteristic curve for each class of the classifier, and selecting the said features in dependence upon the said estimates.
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23. A homecare or patient monitoring environment including a sensor network of a plurality of sensors in an environment defined by the process of:
- acquiring a data set of features corresponding to the sensors and selecting features as an input to a classifier for a plurality of classes including calculating an estimate of the area under a receiver operating characteristic curve for each class of the classifier, and selecting the said features in dependence upon the said estimates.
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24. A body sensor network including a sensor network of a plurality of sensors in an environment defined by the process of:
- acquiring a data set of features corresponding to the sensors and selecting features as an input to a classifier for a plurality of classes including calculating an estimate of the area under a receiver operating characteristic curve for each class of the classifier, and selecting the said features in dependence upon the said estimates.
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25. A computer system arranged to implement a method comprising:
- automatically selecting features as an input to a classifier for a plurality of classes including calculating an estimate of the area under a receiver operating characteristic curve for each class of the classifier, and selecting the said features in dependence upon the said estimates.
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26. (canceled)
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27. A computer readable storage medium carrying a computer program which when executed by one or more processors causes the one or more processors to perform:
- automatically selecting features as an input to a classifier for a plurality of classes including calculating an estimate of the area under a receiver operating characteristic curve for each class of the classifier, and selecting the said features in dependence upon the said estimates.
Specification