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Area under time series transformation for home appliance classification [Elektronski vir]Ogrizek, Leo ...Time series classification is an important task in many fields. In intrusive and non-intrusive load monitoring (N)ILM, time series data are obtained from power measurements of electrical appliances ... that are not known in advance, therefore extracting the type of appliance from the data is a relevant problem in smart grids. We propose a transformation that encodes a time series into an image that can be effectively recognised by well known image classification algorithms. The transformation is based on plotting the time series into a matrix and filling the area under it, producing a more pronounced representation of its shape. We perform an extensive evaluation on 1 synthetic and 4 measured datasets. Our experiments on synthetic and mixed measured data yielded F1 scores of 99.2% and 85.9%, respectively, and outperformed the state-of-the-art on three out of four tested datasets. Additionally, we conclude that our method tends to work better on longer time series segments, as the resulting images contain more distinguishing featuresSource: 2023 19th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob) [Elektronski vir] : 21-23 June 2023, Montreal, Canada (str. 78-83)Type of material - conference contribution ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 160396547
Author
Ogrizek, Leo |
Bertalanič, Blaž |
Mohorčič, Mihael |
Fortuna, Carolina
Topics
appliance classification |
deep learning |
load monitoring
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Ogrizek, Leo | |
Bertalanič, Blaž | 54683 |
Mohorčič, Mihael | 15087 |
Fortuna, Carolina | 29521 |
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