ResStock - Inverse Sample Weight

[afontani]

Issue description

The sample weight is inverse to what we would expect. In a recent run with BuildStock Batch 0.20 I used the following YAML inputs:

baseline:
  n_buildings_represented: 133172057 # ACS 5-yr 2016
sampler:
  type: residential_quota
  args:
    n_datapoints: 550000

I would expect the weight to be 33,172,057/550,000 = 242.13. However, the weight ended up being 0.00413 ~ 550,000/133,172,057.

Bug Location

I believe this is the issue in the ResStock workflow_generator.

buildstockbatch/buildstockbatch/workflow_generator/residential.py

Line 256 in 7f7e628

'sample_weight': self.n_datapoints / self.cfg['baseline']['n_buildings_represented'],