{"id":"https://openalex.org/W1993786250","doi":"https://doi.org/10.1145/1559845.1559911","title":"Scalable join processing on very large RDF graphs","display_name":"Scalable join processing on very large RDF graphs","publication_year":2009,"publication_date":"2009-06-29","ids":{"openalex":"https://openalex.org/W1993786250","doi":"https://doi.org/10.1145/1559845.1559911","mag":"1993786250"},"language":"en","primary_location":{"id":"doi:10.1145/1559845.1559911","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1559845.1559911","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2009 ACM SIGMOD International Conference on Management of data","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101880157","display_name":"Thomas Neumann","orcid":"https://orcid.org/0000-0001-5787-142X"},"institutions":[{"id":"https://openalex.org/I4210109712","display_name":"Max Planck Institute for Informatics","ror":"https://ror.org/01w19ak89","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210109712"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Thomas Neumann","raw_affiliation_strings":["Max-Planck Institute for Informatics, Saarbr\u00fccken, Germany"],"affiliations":[{"raw_affiliation_string":"Max-Planck Institute for Informatics, Saarbr\u00fccken, Germany","institution_ids":["https://openalex.org/I4210109712"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5088135366","display_name":"Gerhard Weikum","orcid":"https://orcid.org/0000-0003-4959-6098"},"institutions":[{"id":"https://openalex.org/I4210109712","display_name":"Max Planck Institute for Informatics","ror":"https://ror.org/01w19ak89","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210109712"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Gerhard Weikum","raw_affiliation_strings":["Max-Planck Institute for Informatics, Saarbr\u00fccken, Germany"],"affiliations":[{"raw_affiliation_string":"Max-Planck Institute for Informatics, Saarbr\u00fccken, Germany","institution_ids":["https://openalex.org/I4210109712"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5101880157"],"corresponding_institution_ids":["https://openalex.org/I4210109712"],"apc_list":null,"apc_paid":null,"fwci":40.0953,"has_fulltext":false,"cited_by_count":232,"citation_normalized_percentile":{"value":0.99845965,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"627","last_page":"640"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10215","display_name":"Semantic Web and Ontologies","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10215","display_name":"Semantic Web and Ontologies","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9954000115394592,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/rdf","display_name":"RDF","score":0.8924888372421265},{"id":"https://openalex.org/keywords/sparql","display_name":"SPARQL","score":0.8547959923744202},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8248399496078491},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.7488009929656982},{"id":"https://openalex.org/keywords/join","display_name":"Join (topology)","score":0.7179654836654663},{"id":"https://openalex.org/keywords/search-engine-indexing","display_name":"Search engine indexing","score":0.5949066281318665},{"id":"https://openalex.org/keywords/rdf/xml","display_name":"RDF/XML","score":0.5943924188613892},{"id":"https://openalex.org/keywords/rdf-query-language","display_name":"RDF query language","score":0.4973509609699249},{"id":"https://openalex.org/keywords/rdf-schema","display_name":"RDF Schema","score":0.477303147315979},{"id":"https://openalex.org/keywords/linked-data","display_name":"Linked data","score":0.4560842216014862},{"id":"https://openalex.org/keywords/cwm","display_name":"Cwm","score":0.4211360812187195},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.40717869997024536},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.39978235960006714},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3892385959625244},{"id":"https://openalex.org/keywords/semantic-web","display_name":"Semantic Web","score":0.28782978653907776},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.10581186413764954},{"id":"https://openalex.org/keywords/search-engine","display_name":"Search engine","score":0.10221660137176514}],"concepts":[{"id":"https://openalex.org/C147497476","wikidata":"https://www.wikidata.org/wiki/Q54872","display_name":"RDF","level":3,"score":0.8924888372421265},{"id":"https://openalex.org/C41009113","wikidata":"https://www.wikidata.org/wiki/Q54871","display_name":"SPARQL","level":4,"score":0.8547959923744202},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8248399496078491},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.7488009929656982},{"id":"https://openalex.org/C2776124973","wikidata":"https://www.wikidata.org/wiki/Q3183033","display_name":"Join (topology)","level":2,"score":0.7179654836654663},{"id":"https://openalex.org/C75165309","wikidata":"https://www.wikidata.org/wiki/Q2258979","display_name":"Search engine indexing","level":2,"score":0.5949066281318665},{"id":"https://openalex.org/C78923513","wikidata":"https://www.wikidata.org/wiki/Q2115","display_name":"RDF/XML","level":5,"score":0.5943924188613892},{"id":"https://openalex.org/C96956885","wikidata":"https://www.wikidata.org/wiki/Q6138701","display_name":"RDF query language","level":5,"score":0.4973509609699249},{"id":"https://openalex.org/C15657843","wikidata":"https://www.wikidata.org/wiki/Q1751819","display_name":"RDF Schema","level":5,"score":0.477303147315979},{"id":"https://openalex.org/C69075417","wikidata":"https://www.wikidata.org/wiki/Q515701","display_name":"Linked data","level":3,"score":0.4560842216014862},{"id":"https://openalex.org/C157595922","wikidata":"https://www.wikidata.org/wiki/Q50745537","display_name":"Cwm","level":5,"score":0.4211360812187195},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.40717869997024536},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.39978235960006714},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3892385959625244},{"id":"https://openalex.org/C2129575","wikidata":"https://www.wikidata.org/wiki/Q54837","display_name":"Semantic Web","level":2,"score":0.28782978653907776},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.10581186413764954},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.10221660137176514},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C118689300","wikidata":"https://www.wikidata.org/wiki/Q7978614","display_name":"Web query classification","level":4,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1145/1559845.1559911","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1559845.1559911","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2009 ACM SIGMOD International Conference on Management of data","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.452.9246","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.452.9246","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://people.scs.carleton.ca/~bertossi/semweb/papsPres/neumannSigmod09.pdf","raw_type":"text"},{"id":"pmh:oai:edoc.mpg.de:520393","is_oa":false,"landing_page_url":"http://edoc.mpg.de/520393","pdf_url":null,"source":{"id":"https://openalex.org/S4406922265","display_name":"Max Planck Institute for Plasma Physics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Proceedings of the 2009 ACM SIGMOD International Conference on Management of Data (SIGMOD 2009), ACM, 627-640 (2009)","raw_type":"Conference-Paper"},{"id":"pmh:oai:pure.mpg.de:item_1324241","is_oa":false,"landing_page_url":"http://hdl.handle.net/11858/00-001M-0000-000F-1948-3","pdf_url":null,"source":{"id":"https://openalex.org/S4306400654","display_name":"MPG.PuRe (Max Planck Society)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I149899117","host_organization_name":"Max Planck Society","host_organization_lineage":["https://openalex.org/I149899117"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Proceedings of the 2009 ACM SIGMOD International Conference on Management of Data","raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":35,"referenced_works":["https://openalex.org/W29172951","https://openalex.org/W102708294","https://openalex.org/W1504439773","https://openalex.org/W1509148583","https://openalex.org/W1532302849","https://openalex.org/W1565595968","https://openalex.org/W1589271613","https://openalex.org/W1812636409","https://openalex.org/W1937427849","https://openalex.org/W2022166150","https://openalex.org/W2026984353","https://openalex.org/W2029554959","https://openalex.org/W2046176209","https://openalex.org/W2087796842","https://openalex.org/W2089247435","https://openalex.org/W2109873539","https://openalex.org/W2112101330","https://openalex.org/W2122406210","https://openalex.org/W2124067180","https://openalex.org/W2124346586","https://openalex.org/W2124426664","https://openalex.org/W2132612426","https://openalex.org/W2135577024","https://openalex.org/W2136632987","https://openalex.org/W2140613126","https://openalex.org/W2146709231","https://openalex.org/W2148522916","https://openalex.org/W2153485419","https://openalex.org/W2158237121","https://openalex.org/W2163423487","https://openalex.org/W2203361072","https://openalex.org/W2766000922","https://openalex.org/W4206606839","https://openalex.org/W4233762723","https://openalex.org/W6684034125"],"related_works":["https://openalex.org/W4301152651","https://openalex.org/W4206665951","https://openalex.org/W3082761338","https://openalex.org/W2563388676","https://openalex.org/W3107051279","https://openalex.org/W2092512344","https://openalex.org/W187679281","https://openalex.org/W2982984597","https://openalex.org/W3083425935","https://openalex.org/W4327990"],"abstract_inverted_index":{"With":[0],"the":[1,4,30,56],"proliferation":[2],"of":[3,22,24,61],"RDF":[5,10,25,62],"data":[6],"format,":[7],"engines":[8],"for":[9],"query":[11],"processing":[12],"are":[13],"faced":[14],"with":[15,70],"very":[16],"large":[17],"graphs":[18],"that":[19],"contain":[20],"hundreds":[21],"millions":[23],"triples.":[26],"This":[27],"paper":[28,50],"addresses":[29],"resulting":[31],"scalability":[32],"problems.":[33],"Recent":[34],"prior":[35],"work":[36],"along":[37],"these":[38],"lines":[39],"has":[40],"focused":[41],"on":[42,52],"indexing":[43],"and":[44,58,66],"other":[45],"physical-design":[46],"issues.":[47],"The":[48],"current":[49],"focuses":[51],"join":[53,68],"processing,":[54],"as":[55],"fine-grained":[57],"schema-relaxed":[59],"use":[60],"often":[63],"entails":[64],"star-":[65],"chain-shaped":[67],"queries":[69],"many":[71],"input":[72],"streams":[73],"from":[74],"index":[75],"scans.":[76]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":7},{"year":2020,"cited_by_count":9},{"year":2019,"cited_by_count":6},{"year":2018,"cited_by_count":11},{"year":2017,"cited_by_count":10},{"year":2016,"cited_by_count":13},{"year":2015,"cited_by_count":18},{"year":2014,"cited_by_count":28},{"year":2013,"cited_by_count":30},{"year":2012,"cited_by_count":27}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}