Undesired results for query with FILTER(regex()) when timeout is setted too big

Support Query DBpedia SPARQL
1

When i write a query like:
SELECT DISTINCT ?item WHERE {?item rdfs:label ?info. FILTER(REGEX(str(?info), “Keyword”,“i”))}
and ‘timeout’ = 50000,
All the results of query always contain 4 following undesired same results no matter what Keyword uesd.
entity/Q14824737 , entity/Q14824736 , entity/Q14824602 , entity/Q14824734


http://www.wikidata.org/entity/Q14824737

…


2

I could not reproduce this.
http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=SELECT+DISTINCT+%3Fitem+WHERE+{%3Fitem+rdfs%3Alabel+%3Finfo.+FILTER(REGEX(str(%3Finfo)%2C+"Keyword"%2C"i"))}&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=50000&debug=on&run=+Run+Query+

item
http://dbpedia.org/ontology/projectKeyword
http://dbpedia.org/resource/Category:SQL_keywords
http://dbpedia.org/resource/SQL_keywords
http://dbpedia.org/resource/Category:Suspected_Wikipedia_sockpuppets_of_Keywordrenewals
http://dbpedia.org/property/keywords
http://dbpedia.org/resource/Category:Pages_with_citations_autofixing_unknown_keywords
http://dbpedia.org/resource/Biology/Additional_biology_topics_and_keywords
http://dbpedia.org/resource/Keyword
http://dbpedia.org/resource/Keyword_spamming
http://dbpedia.org/resource/Keyword_(rhetoric)
http://dbpedia.org/resource/Search_engine_optimization_-Targeted_keywords_or_phrases
http://dbpedia.org/resource/Java_Keywords
http://dbpedia.org/resource/List_of_Java_keywords
http://dbpedia.org/resource/List_of_blacklisted_keywords_in_China
http://dbpedia.org/resource/Keyword_spotting
http://dbpedia.org/resource/Keyword_advertising
http://dbpedia.org/resource/Keyword-driven_testing
http://dbpedia.org/resource/Keyword_stuffing
http://dbpedia.org/resource/Java_keyword
http://dbpedia.org/resource/Keyword(computer_programming)
http://dbpedia.org/resource/Keyword_(linguistics)
http://dbpedia.org/resource/Keyword_(Computer)
http://dbpedia.org/resource/Keyword_(Linguistics)
http://dbpedia.org/resource/Keyword_density
http://dbpedia.org/resource/Keyword_In_Context
http://dbpedia.org/resource/Keyword_in_context
http://dbpedia.org/resource/Keywords:_A_Vocabulary_of_Culture_and_Society

But in general I have 2 comments on this

  1. regex queries on big datasets like DBpedia are evil :wink:
  2. it might be possible that this behaviour is caused by virtuoso anytime feature, see here for more details https://wiki.dbpedia.org/public-sparql-endpoint