Relevant harmonics selection based on mutual information for electrical appliances identification
by Abdenour Hacine-Gharbi; Philippe Ravier; Mohamed Nait-Meziane
International Journal of Computer Applications in Technology (IJCAT), Vol. 62, No. 2, 2020

Abstract: Many appliance identification systems use harmonics of current signals as features. However, the choice of the order and number of relevant harmonics for appliance identification task has never been demonstrated. Here, we propose to tackle this issue by analysing the relevance and redundancy of harmonics for this task using feature selection algorithms based on mutual information criterion. Six heuristic strategies based on this criterion were implemented and their selection results from high-dimensional feature vectors were compared. For the choice of a minimal subset of relevant harmonics, we propose a stopping criterion in the selection procedure. In order to validate the selected subset of harmonics, a hidden Markov model based-classifier was used and evaluated on PLAID dataset. Results highlight odd order harmonics relevance. Furthermore, the feature subset {1,2,3,4,5,7,9} was selected by three strategies as strongly relevant since this minimal subset is sufficient for essentially explaining appliances' signatures.

Online publication date: Tue, 28-Jan-2020

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Computer Applications in Technology (IJCAT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com