Question

我有爱因斯坦谜语猫头鹰填充的OWLIM存储库。 Link1 - Link2。是否可以使用sparql从OWLIM查询推断的知识？要获得与Protege中单个选项卡相同的结果？

SPARQL：

PREFIX riddle: <http://www.iis.nsk.su/persons/ponom/ontologies/einsteins_riddle_en.owl#>
SELECT DISTINCT ?kto ?co
WHERE { 
?kto riddle:drinks ?co .
?kto a owl:Thing .
?co a owl:Thing .

Protege和OWLIM具有相同的结果，只有明确的知识。

co  kto 
---------------------------------------------
http://www.iis.nsk.su/persons/ponom/ontologies/einsteins_riddle_en.owl#tea  http://www.iis.nsk.su/persons/ponom/ontologies/einsteins_riddle_en.owl#Ukrainian

但是（根据我的信息）在Protege中，SPARQL查询仅适用于现有知识和OWLIM构建存储库，包含现有和推断的三元组。所以我也期望推断出三元组。

P.S .: 查询以获得推断的三元组计数（OWLIM）：

SELECT (COUNT(*) as ?count)
FROM <http://www.ontotext.com/implicit>
WHERE {
   ?s ?p ?o .
}

返回0.

** ** ** 编辑： ** ** **

我的配置：

#
# Sesame configuration template for a owlim repository
#
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix rep: <http://www.openrdf.org/config/repository#>.
@prefix sr: <http://www.openrdf.org/config/repository/sail#>.
@prefix sail: <http://www.openrdf.org/config/sail#>.
@prefix owlim: <http://www.ontotext.com/trree/owlim#>.

[] a rep:Repository ;
   rep:repositoryID "Riddle" ;
   rdfs:label "Einstein Riddle Getting Started" ;
   rep:repositoryImpl [
     rep:repositoryType "openrdf:SailRepository" ;
     sr:sailImpl [
       sail:sailType "owlim:Sail" ; 

       owlim:base-URL "http://www.iis.nsk.su/persons/ponom/ontologies/einsteins_riddle_en.owl#" ;

       # There must be exactly the same number of semicolon separated entries in
       # the defaulNS and imports fields
       owlim:defaultNS "http://www.iis.nsk.su/persons/ponom/ontologies/einsteins_riddle_en.owl#" ;
       owlim:imports "./ontology/zebra.owl" ;

       owlim:entity-index-size "5000000" ;
       owlim:repository-type "file-repository" ;
       owlim:ruleset "owl-max" ;
       owlim:storage-folder "storage" ;

       # OWLIM-SE parameters
       owlim:cache-memory "180m" ; 

       # OWLIM-Lite parameters
       owlim:noPersist "false" ;

       # Other OWLIM-SE parameters
       # owlim:enable-context-index "false" ;
       owlim:check-for-inconsistencies "true" ;
       # owlim:disable-sameAs "false" ;
       owlim:enable-optimization "true" ;
       owlim:enablePredicateList "true" ;
       # owlim:entity-id-size "32" ;                 # 32/40
       # owlim:fts-memory "20m" ;
       # owlim:ftsIndexPolicy "never" ;              # never/onStartup/onShutdown/onCommit
       # owlim:ftsLiteralsOnly "false" ;
       # owlim:in-memory-literal-properties "false" ;
       # owlim:enable-literal-index "true" ;
       # owlim:index-compression-ratio "-1" ;        # -1/10-50
       # owlim:owlim-license "" ;
       # owlim:predicate-memory "80m" ;
       # owlim:query-timeout "-1" ;
       # owlim:tokenization-regex "[\p{L}\d_]+" ;
       # owlim:tuple-index-memory "80m" ;
       # owlim:useShutdownHooks "true" ;
       # owlim:transaction-mode "safe" ;
       # owlim:read-only "false" ;

       # Other OWLIM-Lite parameters
       # owlim:jobsize "1000}" ;
       # owlim:new-triples-file ""

      ]
   ].

如果我使用owl2-rl或owl2-ql或w / e，则无关紧要。总是一样的结果。只有推断的三元组数量变为正数。

08:51:40 Executing query 'Who drinks What'
co  kto 
---------------------------------------------
einsteins_riddle_en:tea einsteins_riddle_en:Ukrainian   

08:51:40 1 result(s) in 63ms.
08:51:40 Executing query 'Number of inferred triples'
count   
---------------------------------------------
"770"^^<http://www.w3.org/2001/XMLSchema#integer>

推断三元组对我来说没用，样本：

p   s   o   
---------------------------------------------
rdf:type    rdf:type    rdf:Property    
rdf:type    rdfs:subPropertyOf  rdf:Property    
rdf:type    rdfs:subClassOf rdf:Property    
rdf:type    rdfs:domain rdf:Property    
rdf:type    rdfs:range  rdf:Property    
rdf:type    owl:equivalentClass rdf:Property    
rdf:type    psys:transitiveOver rdf:Property    
...

Answer 1

是的，这是可能的，但这取决于您的OWLIM存储库的配置方式。

首次创建存储库时，OWLIM使用的推理规则集将设置为配置参数 - 有关详细信息，请参阅the configuration documentation。显然，如果您将其设置为使用空规则集，则根本不会进行推理。根据您选择的规则集（有几个级别的表达性），它将能够推断出更多或更少的三重奏（规则集越具表现力，信息越多）。

如果您的OWLIM存储库配置正确，查询将自动检索推断信息以及显式语句。

当然，这也取决于是否确实有任何可以推断的东西。您的查询在Protege和OWLIM中提供相同结果的事实可能仅仅意味着OWLIM 进行推理，但未找到任何与您的查询匹配的推断信息。

是否有可能从OWLIM查询推断的爱因斯坦谜语知识？

1 个答案: