Conference proceeding
A Systematic Feature Selection Procedure for Data-Driven Building Energy Forecasting Model Development
2017 ASHRAE ANNUAL CONFERENCE PAPERS
01 Jan 2017
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
An accurate building energy forecasting model is the key for real-time control of advanced building energy system and building-to-grid integration. Feature selection, the process of selecting a subset of relevant features, is an essential procedure in data-driven modeling due to its ability to reduce model complexity, increase model interpretability, and enhance model generalization. In building energy modeling research, features are often selected purely based on domain knowledge. There lacks a comprehensive methodology to guide the feature selection process when developing building energy forecasting models.
In this research, a systematic feature selection procedure for developing building energy forecasting models is proposed in consideration of statistical data analysis, building physics and engineering practices. The procedure includes three main steps: (Step 1) rule-based feature pre-selection process based on domain knowledge. (Step 2) feature removal process through filter methods to remove irrelevant and redundant variables. And (Step 3) Using wrapper method to obtain the best combinations of features.
A case study is presented here using simulated building energy data that are generated from a medium sized commercial building (a DOE reference building). In this study, the energy forecasting model generated by using the proposed systematic feature selection process is compared with other models such as a model that uses conventional inputs, and a model with single feature selection technique. The comparison result shows that, in terms of cross validation error, the model with systematic feature selection process shows much better model performance than other models including that with conventional inputs and that uses only single feature selection technique.
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Details
- Title
- A Systematic Feature Selection Procedure for Data-Driven Building Energy Forecasting Model Development
- Creators
- Liang Zhang - Drexel Univ, Dept Civil Architecture & Environm Engn, Philadelphia, PA 19104 USAJin Wen - Drexel UniversityASHRAE
- Publication Details
- 2017 ASHRAE ANNUAL CONFERENCE PAPERS
- Conference
- 2017 ASHRAE ANNUAL CONFERENCE PAPERS
- Series
- ASHRAE Annual Conference Papers
- Publisher
- Amer Soc Heating, Refrigerating And Air-Conditioning Engs
- Number of pages
- 8
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Identifiers
- 991019170441704721
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InCites Highlights
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- Web of Science research areas
- Construction & Building Technology
- Thermodynamics