两个规划实体的求解器配置问题类

Question

我正在解决一个与 optaplanner 中的护士排班示例接近的问题。

员工被分配到护士名册中的轮班，但主要区别在于还有持续 20 分钟的技能要求（任务）。如果员工被分配到涵盖给定技能要求时间的班次，则可以为他分配技能要求。假设我们对 Skill1 有从 12:00 到 12:20 的技能要求，并且分配了一名员工从 08:00 到 16:00 的轮班，那么他可以被分配到该技能要求只有他有那个技能。

我有 2 个规划实体 classes。示例中的默认轮班分配，我已经实施了 2 个 classes SkillRequirement class，它将在给定的时间范围内满足一项技能要求（这将是一个计划事实），第二个计划实体 class 将位于 Employee 和 SkillRequirement class 之间，其名称将是 EmployeeSkillRequirement。

到现在为止，我认为我已经做好了一切，我注释了 EmployeeSkillRequirement class 作为@PlanningEntity 和具有适当值范围的计划变量，在计划解决方案中我添加了技能要求列表（这是事实，也会进入流口水工作记忆）和员工技能要求列表这是规划实体，并用 @PlanningEntitySolutionProperty

正确注释

我很难配置解算器，我尝试了许多不同的解算器配置，我在文档中读到当有更多规划实体时 and/or 规划变量应该是移动选择器的联合在你告诉 OptaPlanner 规划实体的名称 class 和规划变量的地方使用，因为它默认找不到它。

None 似乎可以正常工作，而且我一直遇到此异常

Exception in thread "main" java.lang.IllegalArgumentException: Unmarshalling of solverConfigResource (org/optaplanner/examples/nurserostering/solver/nurseRosteringSolverConfig.xml) fails.

以下是我一直尝试使用的配置：

配置 1:

在此配置中，默认移动选择器用于在本地搜索和移动中计划实体轮班分配 class 选择器为规划实体添加 class "EmployeeSkillRequirement" 一切都组合成一个并且构造启发式被替换为联合移动选择器 to.

<?xml version="1.0" encoding="UTF-8"?>
<solver>
<!--<environmentMode>FAST_ASSERT</environmentMode> -->
<solutionClass>org.optaplanner.examples.nurserostering.domain.NurseRoster
</solutionClass>
<entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
</entityClass>
<entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
</entityClass>
<scoreDirectorFactory>
    <scoreDefinitionType>HARD_SOFT</scoreDefinitionType>
    <scoreDrl>org/optaplanner/examples/nurserostering/solver/nurseRosteringScoreRules.drl
    </scoreDrl>
</scoreDirectorFactory>

<termination>
    <!-- Official benchmark secondsSpentLimit allowed on: - ge0ffrey's main 
        pc: sprint 11, medium 700, long 42000 -->
    <secondsSpentLimit>700</secondsSpentLimit>
    <!--<bestScoreLimit>-0hard/-999999soft</bestScoreLimit> -->
</termination>
<constructionHeuristic>
    <queuedEntityPlacer>
        <unionMoveSelector>
            <changeMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </changeMoveSelector>
            <swapMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </swapMoveSelector>
            <changeMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <variableName>employee</variableName>
                </valueSelector>
            </changeMoveSelector>
            <swapMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <variableName>employee</variableName>
                </valueSelector>
            </swapMoveSelector>
        </unionMoveSelector>
    </queuedEntityPlacer>
</constructionHeuristic>
<localSearch>
    <unionMoveSelector>

        <!-- Move Selectors for ShiftAssignment this was the default configuration 
            from the example -->
        <moveListFactory>
            <cacheType>PHASE</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.EmployeeChangeMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <moveListFactory>
            <cacheType>PHASE</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.ShiftAssignmentSwapMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <moveListFactory>
            <cacheType>STEP</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.ShiftAssignmentPillarPartSwapMoveFactory
            </moveListFactoryClass>
        </moveListFactory>


        <!-- The move selectors for the second plannig entity class EmployeeSkillRequirement -->
        <changeMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </entityClass>
            </entitySelector>
            <valueSelector>
                <variableName>employee</variableName>
            </valueSelector>
        </changeMoveSelector>
        <swapMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </entityClass>
            </entitySelector>
            <valueSelector>
                <variableName>employee</variableName>
            </valueSelector>
        </swapMoveSelector>
    </unionMoveSelector>
    <acceptor>
        <entityTabuSize>7</entityTabuSize>
    </acceptor>
    <forager>
        <acceptedCountLimit>800</acceptedCountLimit>
    </forager>
</localSearch>

配置 2:

其次，我查看了文档，发现这个提示表明，如果每个规划实体都有两个不同的构造启发式部分，那么处理多个规划实体会更容易 classes http://docs.jboss.org/optaplanner/release/6.3.0.Final/optaplanner-docs/html_single/index.html#allocateEntityFromQueueMultipleEntityClasses 所以我也尝试了这个配置。

<?xml version="1.0" encoding="UTF-8"?>
<solver>
<!--<environmentMode>FAST_ASSERT</environmentMode> -->
<solutionClass>org.optaplanner.examples.nurserostering.domain.NurseRoster
</solutionClass>
<entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
</entityClass>
<entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
</entityClass>
<scoreDirectorFactory>
    <scoreDefinitionType>HARD_SOFT</scoreDefinitionType>
    <scoreDrl>org/optaplanner/examples/nurserostering/solver/nurseRosteringScoreRules.drl
    </scoreDrl>
</scoreDirectorFactory>

<termination>
    <!-- Official benchmark secondsSpentLimit allowed on: - ge0ffrey's main 
        pc: sprint 11, medium 700, long 42000 -->
    <secondsSpentLimit>700</secondsSpentLimit>
    <!--<bestScoreLimit>-0hard/-999999soft</bestScoreLimit> -->
</termination>
<constructionHeuristic>
    <queuedEntityPlacer>
        <unionMoveSelector>
            <changeMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </changeMoveSelector>
            <swapMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </swapMoveSelector>
        </unionMoveSelector>
    </queuedEntityPlacer>
</constructionHeuristic>
<constructionHeuristic>
    <queuedEntityPlacer>
        <unionMoveSelector>
            <changeMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </changeMoveSelector>
            <swapMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </swapMoveSelector>
        </unionMoveSelector>
    </queuedEntityPlacer>
</constructionHeuristic>
<localSearch>
    <unionMoveSelector>

        <!-- Move Selectors for ShiftAssignment this was the default configuration 
            from the example -->
        <moveListFactory>
            <cacheType>PHASE</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.EmployeeChangeMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <moveListFactory>
            <cacheType>PHASE</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.ShiftAssignmentSwapMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <moveListFactory>
            <cacheType>STEP</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.ShiftAssignmentPillarPartSwapMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <!-- besides this default configuration from optaplaner i also tried this here

        <changeMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.
                </entityClass>
            </entitySelector>
            <valueSelector>
                <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                </downcastEntityClass>
                <variableName>employee</variableName>
            </valueSelector>
        </changeMoveSelector>
        <swapMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                </entityClass>
            </entitySelector>
            <valueSelector>
                <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                </downcastEntityClass>
                <variableName>employee</variableName>
            </valueSelector>
        </swapMoveSelector>-->


        <!-- The move selectors for the second plannig entity class EmployeeSkillRequirement -->
        <changeMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </entityClass>
            </entitySelector>
            <valueSelector>
                <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </downcastEntityClass>
                <variableName>employee</variableName>
            </valueSelector>
        </changeMoveSelector>
        <swapMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </entityClass>
            </entitySelector>
            <valueSelector>
                <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </downcastEntityClass>
                <variableName>employee</variableName>
            </valueSelector>
        </swapMoveSelector>
    </unionMoveSelector>
    <acceptor>
        <entityTabuSize>7</entityTabuSize>
    </acceptor>
    <forager>
        <acceptedCountLimit>800</acceptedCountLimit>
    </forager>
</localSearch>

我也尝试了一些与这些类似的其他配置，仍然没有运气。

我该如何解决这个问题并使其正常工作？

编辑：

Exception in thread "main" java.lang.IllegalArgumentException: Unmarshalling of solverConfigResource (org/optaplanner/examples/nurserostering/solver/nurseRosteringSolverConfig.xml) fails.
at org.optaplanner.core.impl.solver.XStreamXmlSolverFactory.configure(XStreamXmlSolverFactory.java:114)
at org.optaplanner.core.api.solver.SolverFactory.createFromXmlResource(SolverFactory.java:66)
at org.optaplanner.examples.nurserostering.app.NurseRosteringApp.createSolver(NurseRosteringApp.java:50)
at org.optaplanner.examples.common.app.CommonApp.createSolutionBusiness(CommonApp.java:90)
at org.optaplanner.examples.common.app.CommonApp.init(CommonApp.java:77)
at org.optaplanner.examples.common.app.CommonApp.init(CommonApp.java:73)
at org.optaplanner.examples.nurserostering.app.NurseRosteringApp.main(NurseRosteringApp.java:38)
Caused by: " com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$UnknownFieldException: No such field   org.optaplanner.core.config.heuristic.selector.move.generic.SwapMoveSelectorConfig.valueSelector
---- Debugging information ----
field               : valueSelector
class               :      org.optaplanner.core.config.heuristic.selector.move.generic.SwapMoveSelect    orConfig
required-type       :     org.optaplanner.core.config.heuristic.selector.move.generic.SwapMoveSelect    orConfig
converter-type      :    com.thoughtworks.xstream.converters.reflection.ReflectionConverter
line number         : 98
class[1]            :       org.optaplanner.core.config.heuristic.selector.move.composite.UnionMoveSel    ectorConfig
class[2]            :    org.optaplanner.core.config.localsearch.LocalSearchPhaseConfig
class[3]            : org.optaplanner.core.config.solver.SolverConfig
version             : 1.4.7
-------------------------------
at org.optaplanner.core.impl.solver.XStreamXmlSolverFactory.configure(XStreamXmlSolverFactory.java:114)
at org.optaplanner.core.api.solver.SolverFactory.createFromXmlResource(SolverFactory.java:66)
at org.optaplanner.examples.nurserostering.app.NurseRosteringApp.createSolver(NurseRosteringApp.java:50)
at org.optaplanner.examples.common.app.CommonApp.createSolutionBusiness(CommonApp.java:90)
at org.optaplanner.examples.common.app.CommonApp.init(CommonApp.java:77)
at org.optaplanner.examples.common.app.CommonApp.init(CommonApp.java:73)
at org.optaplanner.examples.nurserostering.app.NurseRosteringApp.main(NurseRosteringApp.java:38)

Answer 1

一个常见的错误是在无法正确解析的类名属性中添加空格。解析期间失败：

<solutionClass>org.optaplanner.examples.nurserostering.domain.NurseRoster
</solutionClass>

但这会成功解析：

<solutionClass>org.optaplanner.examples.nurserostering.domain.NurseRoster</solutionClass>

两个规划实体的求解器配置问题 类

Problems with the solver configuration for two planning entity classes

optaplanner

两个规划实体的求解器配置问题类