{"id":"https://openalex.org/W2750691752","doi":"https://doi.org/10.1145/3122831.3122833","title":"From relation algebra to semi-join algebra","display_name":"From relation algebra to semi-join algebra","publication_year":2017,"publication_date":"2017-08-29","ids":{"openalex":"https://openalex.org/W2750691752","doi":"https://doi.org/10.1145/3122831.3122833","mag":"2750691752"},"language":"en","primary_location":{"id":"doi:10.1145/3122831.3122833","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3122831.3122833","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of The 16th International Symposium on Database Programming Languages","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/A5109581854","display_name":"Jelle Hellings","orcid":"https://orcid.org/0000-0003-0290-1438"},"institutions":[{"id":"https://openalex.org/I878454856","display_name":"Hasselt University","ror":"https://ror.org/04nbhqj75","country_code":"BE","type":"education","lineage":["https://openalex.org/I878454856"]}],"countries":["BE"],"is_corresponding":true,"raw_author_name":"Jelle Hellings","raw_affiliation_strings":["Hasselt University, Hasselt, Belgium"],"affiliations":[{"raw_affiliation_string":"Hasselt University, Hasselt, Belgium","institution_ids":["https://openalex.org/I878454856"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034824483","display_name":"Catherine Pilachowski","orcid":null},"institutions":[{"id":"https://openalex.org/I592451","display_name":"Indiana University","ror":"https://ror.org/01kg8sb98","country_code":"US","type":"education","lineage":["https://openalex.org/I592451"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Catherine L. Pilachowski","raw_affiliation_strings":["Indiana University"],"affiliations":[{"raw_affiliation_string":"Indiana University","institution_ids":["https://openalex.org/I592451"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110598353","display_name":"Dirk Van Gucht","orcid":null},"institutions":[{"id":"https://openalex.org/I592451","display_name":"Indiana University","ror":"https://ror.org/01kg8sb98","country_code":"US","type":"education","lineage":["https://openalex.org/I592451"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Dirk Van Gucht","raw_affiliation_strings":["Indiana University"],"affiliations":[{"raw_affiliation_string":"Indiana University","institution_ids":["https://openalex.org/I592451"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016874794","display_name":"Marc Gyssens","orcid":"https://orcid.org/0000-0002-5197-2817"},"institutions":[{"id":"https://openalex.org/I878454856","display_name":"Hasselt University","ror":"https://ror.org/04nbhqj75","country_code":"BE","type":"education","lineage":["https://openalex.org/I878454856"]}],"countries":["BE"],"is_corresponding":false,"raw_author_name":"Marc Gyssens","raw_affiliation_strings":["Hasselt University, Hasselt, Belgium"],"affiliations":[{"raw_affiliation_string":"Hasselt University, Hasselt, Belgium","institution_ids":["https://openalex.org/I878454856"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5047960393","display_name":"Yuqing Wu","orcid":"https://orcid.org/0009-0001-1409-6993"},"institutions":[{"id":"https://openalex.org/I177881444","display_name":"Pomona College","ror":"https://ror.org/0074grg94","country_code":"US","type":"education","lineage":["https://openalex.org/I177881444"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Yuqing Wu","raw_affiliation_strings":["Pomona College"],"affiliations":[{"raw_affiliation_string":"Pomona College","institution_ids":["https://openalex.org/I177881444"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5109581854"],"corresponding_institution_ids":["https://openalex.org/I878454856"],"apc_list":null,"apc_paid":null,"fwci":0.4385,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.6782903,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":95},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"10"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9998000264167786,"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"}},"topics":[{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9998000264167786,"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/T10215","display_name":"Semantic Web and Ontologies","score":0.9994999766349792,"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/T12292","display_name":"Graph Theory and Algorithms","score":0.9983999729156494,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/joins","display_name":"Joins","score":0.8642053604125977},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7346052527427673},{"id":"https://openalex.org/keywords/join","display_name":"Join (topology)","score":0.721237301826477},{"id":"https://openalex.org/keywords/relational-algebra","display_name":"Relational algebra","score":0.6136716604232788},{"id":"https://openalex.org/keywords/rewriting","display_name":"Rewriting","score":0.6129132509231567},{"id":"https://openalex.org/keywords/relation-algebra","display_name":"Relation algebra","score":0.5771088004112244},{"id":"https://openalex.org/keywords/composition","display_name":"Composition (language)","score":0.5459054112434387},{"id":"https://openalex.org/keywords/relation","display_name":"Relation (database)","score":0.5411268472671509},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.5115712285041809},{"id":"https://openalex.org/keywords/query-language","display_name":"Query language","score":0.4710808992385864},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.4558684825897217},{"id":"https://openalex.org/keywords/operator","display_name":"Operator (biology)","score":0.41312795877456665},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.38683992624282837},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.2939130663871765},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.272186815738678},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.24182215332984924},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.21265515685081482},{"id":"https://openalex.org/keywords/relational-database","display_name":"Relational database","score":0.11696982383728027},{"id":"https://openalex.org/keywords/two-element-boolean-algebra","display_name":"Two-element Boolean algebra","score":0.11162853240966797},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.0975867509841919},{"id":"https://openalex.org/keywords/filtered-algebra","display_name":"Filtered algebra","score":0.08712401986122131},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.06476876139640808}],"concepts":[{"id":"https://openalex.org/C2778692605","wikidata":"https://www.wikidata.org/wiki/Q4041866","display_name":"Joins","level":2,"score":0.8642053604125977},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7346052527427673},{"id":"https://openalex.org/C2776124973","wikidata":"https://www.wikidata.org/wiki/Q3183033","display_name":"Join (topology)","level":2,"score":0.721237301826477},{"id":"https://openalex.org/C95916125","wikidata":"https://www.wikidata.org/wiki/Q840540","display_name":"Relational algebra","level":3,"score":0.6136716604232788},{"id":"https://openalex.org/C154690210","wikidata":"https://www.wikidata.org/wiki/Q1668499","display_name":"Rewriting","level":2,"score":0.6129132509231567},{"id":"https://openalex.org/C10282146","wikidata":"https://www.wikidata.org/wiki/Q5965969","display_name":"Relation algebra","level":5,"score":0.5771088004112244},{"id":"https://openalex.org/C40231798","wikidata":"https://www.wikidata.org/wiki/Q1333743","display_name":"Composition (language)","level":2,"score":0.5459054112434387},{"id":"https://openalex.org/C25343380","wikidata":"https://www.wikidata.org/wiki/Q277521","display_name":"Relation (database)","level":2,"score":0.5411268472671509},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.5115712285041809},{"id":"https://openalex.org/C192028432","wikidata":"https://www.wikidata.org/wiki/Q845739","display_name":"Query language","level":2,"score":0.4710808992385864},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.4558684825897217},{"id":"https://openalex.org/C17020691","wikidata":"https://www.wikidata.org/wiki/Q139677","display_name":"Operator (biology)","level":5,"score":0.41312795877456665},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.38683992624282837},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.2939130663871765},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.272186815738678},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.24182215332984924},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.21265515685081482},{"id":"https://openalex.org/C5655090","wikidata":"https://www.wikidata.org/wiki/Q192588","display_name":"Relational database","level":2,"score":0.11696982383728027},{"id":"https://openalex.org/C207764348","wikidata":"https://www.wikidata.org/wiki/Q7858706","display_name":"Two-element Boolean algebra","level":4,"score":0.11162853240966797},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0975867509841919},{"id":"https://openalex.org/C169171071","wikidata":"https://www.wikidata.org/wiki/Q5449241","display_name":"Filtered algebra","level":3,"score":0.08712401986122131},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.06476876139640808},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C86339819","wikidata":"https://www.wikidata.org/wiki/Q407384","display_name":"Transcription factor","level":3,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C158448853","wikidata":"https://www.wikidata.org/wiki/Q425218","display_name":"Repressor","level":4,"score":0.0},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/3122831.3122833","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3122831.3122833","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of The 16th International Symposium on Database Programming Languages","raw_type":"proceedings-article"},{"id":"pmh:oai:documentserver.uhasselt.be:1942/26385","is_oa":false,"landing_page_url":"http://hdl.handle.net/1942/26385","pdf_url":null,"source":{"id":"https://openalex.org/S4306401926","display_name":"Document Server@UHasselt (UHasselt)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I878454856","host_organization_name":"Hasselt University","host_organization_lineage":["https://openalex.org/I878454856"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G427480703","display_name":null,"funder_award_id":"1438990","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"},{"id":"https://openalex.org/G448786246","display_name":null,"funder_award_id":"NSF 1438990","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"},{"id":"https://openalex.org/G848032724","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":32,"referenced_works":["https://openalex.org/W52840101","https://openalex.org/W144096106","https://openalex.org/W891387922","https://openalex.org/W1537501418","https://openalex.org/W1566488688","https://openalex.org/W1755023245","https://openalex.org/W1791618115","https://openalex.org/W1971852817","https://openalex.org/W1989783863","https://openalex.org/W1998368317","https://openalex.org/W2006006495","https://openalex.org/W2009700100","https://openalex.org/W2012078943","https://openalex.org/W2028336642","https://openalex.org/W2034956447","https://openalex.org/W2046021082","https://openalex.org/W2059052871","https://openalex.org/W2082271602","https://openalex.org/W2117430100","https://openalex.org/W2122406210","https://openalex.org/W2127315934","https://openalex.org/W2128710701","https://openalex.org/W2144171837","https://openalex.org/W2153485419","https://openalex.org/W2159701549","https://openalex.org/W2160442532","https://openalex.org/W2294034341","https://openalex.org/W2611888112","https://openalex.org/W2962721563","https://openalex.org/W2999791986","https://openalex.org/W4285719527","https://openalex.org/W4301791419"],"related_works":["https://openalex.org/W197205525","https://openalex.org/W2089781037","https://openalex.org/W4240624163","https://openalex.org/W2109221906","https://openalex.org/W2126624503","https://openalex.org/W2109171159","https://openalex.org/W3094660140","https://openalex.org/W1949546175","https://openalex.org/W1595102089","https://openalex.org/W3090944848"],"abstract_inverted_index":{"Many":[0],"graph":[1],"query":[2],"languages":[3],"rely":[4],"on":[5],"the":[6,45],"composition":[7,30],"operator":[8],"to":[9],"navigate":[10],"graphs":[11],"and":[12],"select":[13],"nodes":[14],"of":[15,21,47],"interests,":[16],"even":[17],"though":[18],"evaluating":[19,48],"compositions":[20],"relations":[22],"can":[23,31,50],"be":[24,32,51],"costly.":[25],"Often,":[26],"this":[27,43],"need":[28],"for":[29],"reduced":[33],"by":[34],"rewriting":[35],"towards":[36],"queries":[37,49],"that":[38],"use":[39],"semi-joins":[40],"instead.":[41],"In":[42],"way,":[44],"cost":[46],"significantly":[52],"reduced.":[53]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2018,"cited_by_count":1}],"updated_date":"2026-04-10T15:06:20.359241","created_date":"2017-09-15T00:00:00"}