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DeterminsticTravelTimes: verification failed #12

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luchengqi7 opened this issue Jun 30, 2022 · 4 comments
Open

DeterminsticTravelTimes: verification failed #12

luchengqi7 opened this issue Jun 30, 2022 · 4 comments

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@luchengqi7
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Hi Sebastian,

If I turn on the Deterministic travel time check (Alonso-mora config group: setCheckDeterminsticTravelTimes(true)), then the check will fail even under a network with very large capacity (e.g., capacity factors = 100000). Do you also experience similar issue?

I think we have similar problems in the standard DRT contrib. A similar consistency check of the vehicle schedule and insertion plan will also lead to the error. And therefore the check was temporarily disabled.

Best regards,
Chengqi Lu

@sebhoerl
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sebhoerl commented Sep 6, 2022

Hi Chengqi, this assumes that capacities are close to infinity, but also that travel times don't vary over the day. The latter is the case for you, isn't it?

@luchengqi7
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Yes, as the starting point, I am trying the algorithm on a deterministic and time-invariant network. Since the fleet is not so large in the scenario, so I think the travel time will remain constant throughout the day. Therefore, I am not sure why the test is failing.

@sebhoerl
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sebhoerl commented Sep 7, 2022

Normally, if capacities are set to 9999999 (flow and storage) and times are constant over the day, it should work.

@sebhoerl
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Tarek had the same issue, need to check what is special about the NY use case / the cases in the unit tests that make this work. Probably some config option

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