Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
ResStock projects do not use this PAT interface input.
Note that ResStock's sampling algorithm is part deterministic and part random. The deterministic part occurs when ResStock determines how many of a given option to choose for a given building characteristic. For example, if a probability distribution for wall insulation is 30% uninsulated, 50% R-13, and 20% R-19, and you asked for 20 buildings, ResStock's sampling would always yield 6 buildings with uninsulated walls, 10 buildings with R-13 walls, and 4 buildings with R-19 walls.
Randomness thus only comes into play when these wall options are combined with other parameters (HVAC options, appliance options, etc). However, ResStock currently uses a hard-coded random seed to make the sampling algorithm repeatable. If you really want to generate different combinations of building characteristics, you can change this value between runs.
