SPARQL 对象预测示例

对象预测预测给定主题和谓词的对象值。

以下对象预测查询试图预测类型为 foaf:Person 的输入喜欢什么电影：

?x a foaf:Person .
?x   <http://www.example.org/likes> ?m .
?m a <http://www.example.org/movie> .

## Query
SELECT * WHERE { ?input a foaf:Person .
  SERVICE neptune-ml:inference {
    neptune-ml:config neptune-ml:modelType 'OBJECT_PREDICTION' ;
                      neptune-ml:input ?input ;
                      neptune-ml:predicate <http://www.example.org/likes> ;
                      neptune-ml:output ?output ;
                      neptune-ml:outputClass <http://www.example.org/movie> .
  }
}

查询本身可以按如下方式自定义：

SELECT * WHERE { ?input a foaf:Person .
  SERVICE neptune-ml:inference {
    neptune-ml:config neptune-ml:endpoint 'node-prediction-user-movie-prediction-endpoint' ;
                      neptune-ml:iamRoleArn 'arn:aws:iam::0123456789:role/sagemaker-role' ;

                      neptune-ml:limit "5"^^xsd:integer ;
                      neptune-ml:batchSize "40"^^xsd:integer ;
                      neptune-ml:threshold "0.1"^^xsd:double ;
                      neptune-ml:timeout "1000"^^xsd:integer ;
                      neptune-ml:outputScore ?score ;

                      neptune-ml:modelType 'OBJECT_PREDICTION' ;
                      neptune-ml:input ?input ;
                      neptune-ml:predicate <http://www.example.org/likes> ;
                      neptune-ml:output ?output ;
                      neptune-ml:outputClass <http://www.example.org/movie> .
  }
}