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Solving the Cold-Start Problem in Short-Term Load Forecasting Using Tree-Based Methods

Authors
Moon, JihoonKim, JunhongKang, PilsungHwang, Eenjun
Issue Date
2월-2020
Publisher
MDPI
Keywords
short-term load forecasting; building electric energy consumption forecasting; cold-start problem; transfer learning; multivariate random forests; random forest
Citation
ENERGIES, v.13, no.4
Indexed
SCIE
SCOPUS
Journal Title
ENERGIES
Volume
13
Number
4
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/57896
DOI
10.3390/en13040886
ISSN
1996-1073
Abstract
An energy-management system requires accurate prediction of the electric load for optimal energy management. However, if the amount of electric load data is insufficient, it is challenging to perform an accurate prediction. To address this issue, we propose a novel electric load forecasting scheme using the electric load data of diverse buildings. We first divide the electric energy consumption data into training and test sets. Then, we construct multivariate random forest (MRF)-based forecasting models according to each building except the target building in the training set and a random forest (RF)-based forecasting model using the limited electric load data of the target building in the test set. In the test set, we compare the electric load of the target building with that of other buildings to select the MRF model that is the most similar to the target building. Then, we predict the electric load of the target building using its input variables via the selected MRF model. We combine the MRF and RF models by considering the different electric load patterns on weekdays and holidays. Experimental results demonstrate that combining the two models can achieve satisfactory prediction performance even if the electric data of only one day are available for the target building.
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공과대학 (전기전자공학부)
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