两个规划实体类的求解器配置问题

【问题标题】：Problems with the solver configuration for two planning entity classes两个规划实体类的求解器配置问题
【发布时间】：2016-07-03 03:22:39
【问题描述】：

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（分配）。如果员工被分配到涵盖给定技能要求时间的班次，则可以将其分配给技能要求。假设我们在 12:00 到 12:20 之间对 Skill1 有技能要求，并且员工在 08:00 到 16:00 的轮班时间被分配，那么只有当他具有该技能时，他才能被分配到该技能要求。

我有 2 个规划实体类。示例中的默认轮班分配，我已经实现了另外 2 个类 SkillRequirement 类，它们将在给定的时间范围内保持一项技能要求（这将是一个计划事实），第二个计划实体类将在 Employee 和SkillRequirement 类，其名称为 EmployeeSkillRequirement。

到现在为止，我认为我所做的一切都很好，我注释了 EmployeeSkillRequirement 类为@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，也进入流口水工作记忆）和技能要求的员工列表，这是计划实体并使用@PlanningEntitySolutionProperty 正确注释

我很难配置求解器，我尝试了许多不同的求解器配置，我在文档中读到，当有更多规划实体和/或规划变量时，应该在你告诉的地方使用移动选择器的联合OptaPlanner 规划实体类和规划变量的名称，因为默认找不到。

似乎没有一个工作，我一直得到这个异常

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

这是我一直在尝试使用的配置：

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规划实体移位分配类 选择器 为计划实体类添加 “EmployeeSkillRequirement”和一切都组合在一个 并且构造启发式被替换为结合在一个联合中的移动选择器。

<?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，发现这个提示说，如果每个计划实体类有两个不同的构造启发式部分，则处理多个计划实体类会更容易 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)

【问题讨论】：

  • 非法参数异常的原因是什么？ XStream 异常消息应该清楚地指出没有解析的内容。我怀疑您在此处编写的两个配置可能会有所不同。我们打算迟早提供 XSD 架构。
  • 关于配置 1：swapMoveSelector 嵌套在 constructionHeuristic 中没有意义。请参阅文档的this section。

标签： optaplanner


【解决方案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。这在解析过程中失败：

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

但这成功地被解析了：

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

【讨论】：

  • 这就像一个魅力。谢谢。我还按照你的建议从构造启发式中删除了 swapMoveSelector。现在我收到另一个错误，我将其发布为编辑。
  • 最好为新问题创建一个新问题，否则阅读时间太长（并且对于其他有相同问题的用户来说也很长才能识别它）。话虽如此，这是另一个 Xstream 解组错误。如果您检查错误消息，它基本上说您在&lt;swapMoveSelector&gt; 元素中有一个&lt;valueSelector&gt; 元素，但是如果您查看SwapMoveSelectorConfig，您会注意到那里没有这样的字段。
  • 哦，是的：要查找 XML 元素的 java 类，只需在其名称中添加后缀 Config。
  • 它再次像魅力一样工作，一切正常！我发布了关于您的提案的另一个问题，并在那里回答了它以帮助社区。这是链接：stackoverflow.com/questions/36090831/…。再次感谢您的帮助！
  • 也许您应该考虑修剪该值并删除所有新行或标签
猜你喜欢
  • 2022-08-12
  • 2023-01-20
  • 1970-01-01
  • 2022-12-11
  • 1970-01-01
  • 1970-01-01
  • 2013-06-23
  • 2011-07-27
  • 1970-01-01
相关资源
最近更新 更多
热门标签
Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode