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Revert "docs: CH mixed models"
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docs/src/modules/ROOT/pages/optimization-algorithms/construction-heuristics.adoc

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For scaling out, see <<scalingConstructionHeuristics,scaling construction heuristics>>.
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[#mixedModelConstructionHeuristics]
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== Mixed modeling and construction heuristics
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If the model includes both xref:using-timefold-solver/modeling-planning-problems.adoc#planningVariable[basic] and xref:using-timefold-solver/modeling-planning-problems#planningListVariable[list] variables,
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the default behavior of the construction heuristic is
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to use strategies based on the allocation of xref:optimization-algorithms/construction-heuristics.adoc#allocateEntityFromQueue[entities] and xref:optimization-algorithms/construction-heuristics.adoc#allocateToValueFromQueue[values]
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for solving all related variables.
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=== Algorithm description
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The allocations work like this:
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. Put all values in a round-robin queue.
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. Put all entities in a second queue.
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. Combine the moves from the allocation of entity and values.
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.. Assign the first entity from the queue to the best value.
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.. Assign the best entity from the second queue to the first value.
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. Repeat until all entities are assigned.
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[#mixedModelConfiguration]
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=== Configuration
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Simple configuration:
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[source,xml,options="nowrap"]
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----
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<constructionHeuristic>
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</constructionHeuristic>
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----
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Advanced configuration for a single entity class with a list variable and a single basic variable:
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[source,xml,options="nowrap"]
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----
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<constructionHeuristic>
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<!-- List Variable -->
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<queuedValuePlacer>
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<valueSelector id="placerValueSelector">
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<cacheType>PHASE</cacheType>
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<selectionOrder>SORTED</selectionOrder>
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<sorterManner>INCREASING_STRENGTH</sorterManner>
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</valueSelector>
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<changeMoveSelector>
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<entitySelector>
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<cacheType>PHASE</cacheType>
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<selectionOrder>SORTED</selectionOrder>
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<sorterManner>DECREASING_DIFFICULTY</sorterManner>
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</entitySelector>
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<valueSelector mimicSelectorRef="placerValueSelector"/>
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</changeMoveSelector>
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</queuedValuePlacer>
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<!-- Basic Variable -->
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<queuedEntityPlacer>
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<entitySelector id="placerEntitySelector">
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<cacheType>PHASE</cacheType>
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<selectionOrder>SORTED</selectionOrder>
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<sorterManner>DECREASING_DIFFICULTY</sorterManner>
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</entitySelector>
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<changeMoveSelector>
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<entitySelector mimicSelectorRef="placerEntitySelector"/>
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<valueSelector>
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<cacheType>PHASE</cacheType>
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<selectionOrder>SORTED</selectionOrder>
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<sorterManner>INCREASING_STRENGTH</sorterManner>
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</valueSelector>
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</changeMoveSelector>
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</queuedEntityPlacer>
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</constructionHeuristic>
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----
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[#scalingConstructionHeuristics]
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== Scaling construction heuristics
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