Nation Preagg Surrogate Activity Weighting Issue #9
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danielbizercox
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Jan 21, 2021
Normalizing surrogate activity for the tables that are using the unweighted values
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This has been fixed by correctly weighting the values in the SurrogateActivity table. Users who want to use this feature before we release version 3.0.1 can download the PreAggNation.sql file to the \database folder of their MOVES installation directory (overwriting the existing file). The model does not need to be recompiled to use this fix. |
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Nation Preagg uses various weighting methods to average activity by county, state, or fuel region to national averages. The tables that use the interim table SurrogateActivity do not have proper weighting because that table is (purposefully) missing values for Puerto Rico and the Virgin Islands during a Nation Preagg run, but it is used as if it sums to 1. This has a very small impact on results.
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