我有用爱因斯坦谜语猫头鹰填充的 OWLIM 存储库。 链接1 -链接2 。是否可以使用 sparql 从 OWLIM 查询推断的知识?要获得与 Protege 中的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,只是显性知识。
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,OWLIM 使用现有和推断的三元组构建存储库。所以我也期望推断出三元组。
PS:查询以获取推断三元组的计数(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 其他方式,这并不重要。总是一样的结果。只有推断的三元组数变为正数。
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>
推断的三元组对我来说没用,它们的示例:
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
...