## 2 Methods
### ANN Prediction Modeling
#### 2.3.3. Energy and Daylight Simulation  
Before energy simulation, a HVAC system template of ideal air loads was assigned to the conditioned zones by the Honeybee_HVACSystem component. This HVAC template can be thought of as an ideal unit that mixes air at the zone exhaust condition with the specified amount of outdoor air and then adds or removes heat and moisture at 100% efficiency in order to produce a supply air stream at the specified conditions [39]. Zone loads and schedules of the conditioned zones were set by the components of Honeybee_setEPZoneLoads and Honeybee_setEPZoneSchedules. The ventilation, people, lights and equipment parameters of each conditioned zone can be seen in Table 4. Zone schedules of occupancy, ventilation, lighting, equipment, heating set point and cooling set point were defined to be distinguished on working days and holidays, based on the energy simulation schedules for school buildings on the China Design Standard for Energy Efficiency in Public Buildings (GB50189-2015) [34]. The zone schedules on working days can be shown in Table 5, while during all time periods of the holidays, occupancy rate, lighting and equipment usage rate were set to be 0%, the ventilation system was set to be off, the heating set point was 37 \({}^{\circ}\)C and the cooling set point was 5 \({}^{\circ}\)C. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Zone names** & **Ventilation Per Person** & **People** & **Lights** & **Equipment** \\ \hline
**Unit** & **m3/h-p** & **p/m2** & **W/m2** & **W/m2** \\ \hline Zone A1-A5 & 30 & 0.3 & 12 & 5 \\ \hline Zone B1-B5 & 30 & 0.1 & 8 & 10 \\ \hline Zone C1-C5 & 30 & 0.3 & 12 & 5 \\ \hline Zone D1-D5 & 30 & 0.3 & 12 & 5 \\ \hline Zone E1-E5 & 30 & 0.1 & 10 & 5 \\ \hline Zone F1-F5 & 30 & 0.3 & 12 & 5 \\ \hline Zone G1-G5 & 30 & 0.3 & 12 & 5 \\ \hline Zone H1-H5 & 30 & 0.1 & 10 & 5 \\ \hline Zone I1-I5 & 30 & 0.1 & 8 & 10 \\ \hline Atrium Zone & 30 & 0.3 & 13 & 13 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Zone load parameters. Figure 7: The parametric simulation modeling module. After the zone load and schedule parameters were assigned, the optional wall constructions and window constructions of the building envelope need to be created and written to the EnergyPlus (EP) construction library. The EP constructions were defined by construction names and layers of different materials, the materials not existing in the material library were created by assigning names and properties first and then used to create EP constructions. After being written to the library, the wall constructions and window constructions were indexed according to the decision variable values of the wall construction type and window panel type, the corresponding constructions were called from the library and assigned to the simulation model. Other energy simulation parameters including the location and annual weather information of Changchun city, which can be obtained from the website of U.S. Department of Energy by downloading the EnergyPlus Weather (EPW) file [40]. The simulation analysis period was set from 1 January to 31 December. The type numbers of the wall construction and window construction were altered automatically to the corresponding values of another design sample after one simulation run. The simulation time step was 6 per hour and zone energy use of cooling load, heating load, electric lights and equipment was set to be the output data for EUI calculating. Daylight simulation is time-consuming, so the test grid was not arranged on all of the zones. Zone A can have enough daylight with big windows and the atrium nearby, Zone E and H rely largely on artificial lights because of a long distance for daylighting, so Zone B, C, D, F, G and I of the third floor were chosen for creating daylight analysis grid. The EPW file was input again, the daylight analysis grid was set as 1 m \(\times\) 1 m, and was 0.76 m from the floor as the typical height of working plane is 0.76 m. The daylight simulation analysis period was also set from 1 January to 31 December.