Question

我的烹饪食谱本体论中有两个课程：

<Class rdf:about="&SouthSulawesiCulinaryRecipes;FoodAndBeveragesRecipes">
    <equivalentClass>
        <Restriction>
            <onProperty rdf:resource="&SouthSulawesiCulinaryRecipes;NumberOfIngredientsRequired"/>
            <minQualifiedCardinality rdf:datatype="&xsd;nonNegativeInteger">1</minQualifiedCardinality>
            <onDataRange rdf:resource="&xsd;int"/>
        </Restriction>
    </equivalentClass>
    <equivalentClass>
        <Restriction>
            <onProperty rdf:resource="&SouthSulawesiCulinaryRecipes;UsesTools"/>
            <onClass rdf:resource="&SouthSulawesiCulinaryRecipes;KitchenEquipment"/>
            <minQualifiedCardinality rdf:datatype="&xsd;nonNegativeInteger">1</minQualifiedCardinality>
        </Restriction>
    </equivalentClass>
</Class> 

<Class rdf:about="&SouthSulawesiCulinaryRecipes;Place"/>

这是对象属性：

<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#HasIngredients -->

     <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;FoodAndBeverages"/>
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;_IngR"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#HasRecipe -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;HasRecipe">
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;FoodAndBeveragesRecipes"/>
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;Place"/>
    <rdfs:subPropertyOf rdf:resource="&owl;topObjectProperty"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#IngR -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;IngR">
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;FoodAndBeveragesRecipes"/>
    <inverseOf rdf:resource="&SouthSulawesiCulinaryRecipes;Relation_Of"/>
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;_IngR"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#Ing_Type -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;Ing_Type">
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;IngType"/>
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;_IngR"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#IngredientUsedToMake -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;IngredientUsedToMake">
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;FoodAndBeverages"/>
    <inverseOf rdf:resource="&SouthSulawesiCulinaryRecipes;HasIngredients"/>
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;_IngR"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#MeasurementUnit -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;MeasurementUnit">
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;CookingMeasurements"/>
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;_IngR"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#RecipeOrigin -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;RecipeOrigin">
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;FoodAndBeveragesRecipes"/>
    <inverseOf rdf:resource="&SouthSulawesiCulinaryRecipes;HasRecipe"/>
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;Place"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#Relation_Of -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;Relation_Of">
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;FoodAndBeveragesRecipes"/>
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;_IngR"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#ToolsUsedByRecipe -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;ToolsUsedByRecipe">
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;FoodAndBeveragesRecipes"/>
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;KitchenEquipment"/>
    <inverseOf rdf:resource="&SouthSulawesiCulinaryRecipes;UsesTools"/>
</ObjectProperty>



<!-- http://www.semanticweb.org/hp/ontologies/2014/4/SouthSulawesiCulinaryRecipes#UsesTools -->

<ObjectProperty rdf:about="&SouthSulawesiCulinaryRecipes;UsesTools">
    <rdfs:domain rdf:resource="&SouthSulawesiCulinaryRecipes;FoodAndBeveragesRecipes"/>
    <rdfs:range rdf:resource="&SouthSulawesiCulinaryRecipes;KitchenEquipment"/>
</ObjectProperty> here

首先，我有这个查询来获取我的本体中的所有食谱

SELECT   ?FoodAndBeveragesRecipes
   WHERE {
         ?Place :HasRecipe ?FoodAndBeveragesRecipes 
    }

结果是：

CotoMakassar

再见

EsPisangIjo

PalluMata

DanpoGoreng

DanpoRebus

SambalMangga

现在我正在尝试运行此查询以获取配方名称为“Danpo”的所有数据集（我不知道是否还有其他代码比这个更简单，如果您知道也请告诉我）：< / p>

SELECT   ?FoodAndBeveragesRecipes
   WHERE {
         ?Place :HasRecipe ?FoodAndBeveragesRecipes .
        FILTER regex (?FoodAndBeveragesRecipes ,"Danpo", "i")
    }

查询正在运行，但它是空的，我没有得到我的数据，我认为没有错误。我想知道为什么我的过滤器工作不正常？如何在我的正则表达式中获取与我的关键字完全相同的数据集？有人能帮助我吗？

感谢。

Answer 1

我很确定这是Extract triples containing particular substring using SPARQL的副本，我已将其标记为此类，但这也可能有助于提供更多解释。 hasRecipe 属性是对象属性。这意味着它的对象应该是个体，这意味着它们将成为IRI。 正则表达式函数需要一个字符串作为参数。如果要将正则表达式与IRI文本进行匹配，则需要使用 str 函数：

FILTER regex (str(?FoodAndBeveragesRecipes) ,"Danpo", "i")

也就是说，如果您只想检查它是否包含字符串，并且您使用的是SPARQL 1.1，则可以使用contains：

filter contains(str(?FoodAndBeveragesRecipes), "Danpo")

SPARQL REGEX正在运行但没有显示任何内容

1 个答案: