Processes Results Problem definition: Problem boundary; Problem Definition Data collection; Metrics; and Data Preparation Data cleaning and preparation Prepared data; Evaluate correlation of occupant number and energy use using scatter plots,statistical analysis,and etc. Correlation Correlation between occupant Analysis number and energy use of No Comrelated? End each sub-system Yes 3 Compare prediction accuracy of baseline models with an without occupancy data Evaluation of Whether the occupancy data Occupancy Influence Model2 improves prediction accuracy: on Baseline If yes,the quantitative impact Prediction Improve No End accuracy? Yes Compare occupancy factor with other impact factors The contribution of Prioritization of occupancy factor compared impact factors Factor 1 Factor2 to other factors End process and apply results in practical projects Fig.2.Framework of evaluating occupancy impact on baseline prediction