Project Meeting 2020.03.13 - ActivitySim/activitysim GitHub Wiki

Task 2 Strategic Planning (milestone)

• We need to develop the outline for the strategic plan, @Ben to start
• We discussed a multiple models management system (MMMS) as a possible technical component of the plan
  • Do partners need to stay up-to-date and inline with the software, and if not, does it hold up releasing updates?
  • Do partner models need some sort of certification? Could be a lot of work to take care of this thing?
  • PSRC has found the DaySim test system helpful for improving confidence in updating to new releases
  • One of the key things that differentiates activitysim when compared to most ABM software is the management of a comprehensive set of tests to ensure software integrity (rather than just running the regional AB model to test revisions)
  • Will add MMMS to the Phase 6 wish list

Task 5 TNCs (milestone)

• Verification summaries by mode, zone, and time-of-day posted
• Around 1% mode share and in the right locations. Shared TNC overly attractive as a trip mode and not enough share of PM peak trips.
• Rename MAAS to RideHail
• Will now integrate adding TNCs into tutorial and create PR
• We can revisit goodness-of-fit once we have observed data summaries

Task 9 Estimation Mode (milestone)

• @Jeff making good progress separating coefficients from data and writing out EDB
• Both tour mode choice and school location choice being cleaned up
• SFCTA shared their current experiences with DaySim
  • DaySim estimation mode works well
  • prepares ALOGIT data files and specs
  • assumes fixed model structure
  • numbered coefficients can be tricky to keep track of
  • SFCTA will help us with testing
  • adding additional variables is difficult since the input file formats are difficult to change
  • it is good to have a decoupled system so revisions can be made in estimation as needed
• PSRC shared their current experiences with DaySim
  • works great and have used it before
  • working on Python script to reformat latest survey into DaySim format and plan to eventually update it to work for activitysim
  • looking forward to discussion of estimation tool options