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MO-NILM: A multi-objective evolutionary algorithm for NILM classification
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DOI：10.1016/j.enbuild.2019.06.046.png)
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Abstract
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Non-intrusive load monitoring (NILM) techniques estimate the consumption of individual appliances in a household or facility, based on readings of a centralized meter. In this work a new method for multidimensional NILM signals is proposed-the Multi-objective NILM (MO-NILM). While classical NILM algorithms are based on a single objective function, MO-NILM classifies NILM events by solving a multi-objective optimization problem. The main idea is to model each NILM feature as an objective function, and to mutually minimize these objectives based on the Non-dominated Sorting Genetic Algorithm II (NSGA-II). The presented algorithms can operate in real time using low sampling rates (0.25 Hz and lower) without training the system. In addition, the proposed algorithm is simple, and requires information on the average power signatures of each appliance. The method shows good performance in terms of standard measures when tested on the popular REDD and AMPds datasets. (C) 2019 Elsevier B.V. All rights reserved.
Keywords:
Non-intrusive load monitoring (NILM)
Multi-objective optimization (MOO)
Evolutionary algorithm
Non sorting genetic algorithm II (NSGA-II)
Power signature
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