timefold-solver

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Feat: toConnected(Temporal)Ranges could return detailed overlap info

1

Hey team, I'm using the following construct to get ranges with overlapping intervals. ``` constraintFactory.forEach(Interval.class) .groupBy(ConstraintCollectors.toConnectedTemporalRanges( shift -> interval.getStart().toInstant(), shift -> interval.getEnd().toInstant())) .flattenLast(ConnectedRangeChain::getConnectedRanges) .filter(range -> ... ``` It pretty much...

mcimbora

For a case like this: ``` @PEntity class Vehicle { @PListVariable List visits; ... } ``` with 50k visits, the Construction Heuristic runs very long. For Shift to Employee assignments,...

ge0ffrey

Feat: PlanningVariable Pinning

5

**Is your feature request related to a problem? Please describe.** I have a situation where i can only change one planningvariable in my entity which has more planningvariable. this situation...

StefanWolf-tp

To use the `FIRST_FIT_DECREASING` CH, the model developer has to implement a `DifficultyComparator`, providing an estimate how difficult the entity is to plan. That is easy when there is a...

rsynek

Docs: Construction Heuristic full configuration for a PlanningListVariable

1

Our docs have a full "advanced" CH config for a normal variable: ```` PHASE SORTED DECREASING_DIFFICULTY PHASE SORTED INCREASING_STRENGTH ```` https://docs.timefold.ai/timefold-solver/latest/optimization-algorithms/construction-heuristics#allocateEntityFromQueueConfiguration but it **lacks that for a list variable**. That...

ge0ffrey

Partial score calculation with bailout/shortcut (EPIC)

2

Currently, a score is always calculated entirely (all-or-nothing). For example, when a move changes shift A to Beth, but Beth doesn't have the right skill for A, it will calculate...

ge0ffrey

Feat: Dynamic Constraint Weight in constraint factory

6

Constraint Weight can be configured at runtime/dynamically using ConstraintWeightOverrides but it's a bit tedious to configure. Could it be possible to configure them dynamically/lazily using the constraintFactory ? Example: ```...

noguespi

HGS is a rumored to be a interesting algorithm for CVRP. Let's compare it to our implementation and see how it deal with real-world VRP complexity. https://github.com/vidalt/HGS-CVRP (MIT license)

ge0ffrey

The introduction to the Solver documentation is somewhat unstructured. - Introduction already contains "Getting started" code examples. - "Using the Solver" once again has an overview. - Modelling and design...

TomCools

Feat: Make time gradient calculation more flexible

3

**Is your feature request related to a problem? Please describe.** Finding the right termination config for time gradient based algorithms like simulated annealing is pretty hard especially for benchmarks. If...

jason076