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• W4200380963 startingPage "111817" @default.
• W4200380963 abstract "Distance measurement (also known as similarity measurement) is used to evaluate pairwise similarities between data samples. It has been widely used in diverse building informatics research and applications to classify or cluster massive building data with the aim of improving prediction accuracy, identifying operation patterns, benchmarking and diagnosing building performance, etc. Various distance measures have been adopted to measure the distance/similarity of building data. However, the intrinsic complexity and diversity of building operational data bring considerable difficulties to the selection of a suitable distance measure for a specific task. There is a strong and urgent need for a comprehensive review and systematic comparison of existing distance measures in building informatics. This study provides a comprehensive review of various distance measures and their applications in building operational data analysis. A systematic comparison is undertaken based on two typical tasks relying on building informatics, i.e., building energy usage pattern recognition, and clustering-based weather data segmentation for the customized development of building energy prediction models. Nine widely adopted distance measures have been reviewed and compared, including Euclidean distance, Chebyshev distance, Manhattan distance, Mahalanobis distance, Hausdorff distance, Pearson correlation distance, Dynamic Time Warping, Edit distance on Real Sequence, and Cosine distance. Novel internal and external clustering validation approaches based on the cross-test and prediction accuracy are proposed and adopted to compare the clustering performance. The results in case studies showed that weather data clustering using the Cosine distance and Pearson correlation distance helps to obtain better energy prediction results in terms of MAPE (13.22% and 12.91%, respectively) than the commonly-used Euclidean distance (13.99%). The results also revealed that better clustering performance does not necessarily lead to higher prediction accuracy. The research results and insights obtained are valuable to guide distance-based research in building informatics." @default.
• W4200380963 created "2021-12-31" @default.
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• W4200380963 date "2022-03-01" @default.
• W4200380963 modified "2023-10-13" @default.
• W4200380963 title "Distance measures in building informatics: An in-depth assessment through typical tasks in building energy management" @default.
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• W4200380963 doi "https://doi.org/10.1016/j.enbuild.2021.111817" @default.
• W4200380963 hasPublicationYear "2022" @default.
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