Project Meeting 2019.03.08 - ActivitySim/activitysim GitHub Wiki
Verification
We fixed all the verification table issues and re-traced a HH to confirm the fixes
TM1 style shadow pricing looking better, see plots below, but still not converging as fast as TM1 so we're still investigating
Size term by iteration for zone 1 work low income segment below
zone 1, work_low, sp iteration
ctramp style
target
3657
1
2490
2
2625
3
2824
4
2860
5
3069
6
3132
7
3123
8
3188
9
3249
10
3346
Daysim style shadow pricing needs some fixing as well (after reviewing the code and discussing with Mark), which we are still working on, see #250. We also updated the expression file as a result.
Updated the example to use ctramp method and more efficient damping factor
Implemented mode choice logsums for mandatory tour time-of-day choice as part of the verification/clean-up
Now working on a 10% sample run of the subsequent submodels, but ran into tour mode choice sampling and logsums not being implemented for escort tours.
We agreed to go ahead and implement missing agreed upon features such as this
This will slow down the model so its important we complete it before talking about runtimes
We plan to continue to trace calculations expression-by-expression to ctramp and to add expressions to force choices for the trace household to match TM1 so we can compare utilities
@Ben to create shadow pricing total workers by taz target versus modeled plot like ARC
@Ben to continue debugging shadow pricing calculations
@Jeff to implement logsums and sampling for non-mandatory tour destination choice
Fixing the daysim approach to shadow pricing isn't important so we'll either fix it soon or drop it
Project admin
We've spent about $145k of the $210k budget to date, ~$65k remaining
As we discussed at TRB, we prioritized verification over support for two zone system and assistance to ARC/SANDAG. These tasks were budgeted at $80k total so we're now into those budgets.
We decided:
@Ben/Jeff to estimate cost to implement remaining agreed upon features in our progress report
We will push the two zone system task to the next phase
We will push the ARC/SANDAG support tasks to the next phase
We will implement the TM1 free parking parking
Remaining budget will be used for implementing missing features and verification since our summer release is top priority
