{"id":"https://openalex.org/W1757148883","doi":"https://doi.org/10.1023/a:1018973620715","title":null,"display_name":null,"publication_year":1997,"publication_date":"1997-01-01","ids":{"openalex":"https://openalex.org/W1757148883","doi":"https://doi.org/10.1023/a:1018973620715","mag":"1757148883"},"language":"en","primary_location":{"is_oa":false,"landing_page_url":"https://doi.org/10.1023/a:1018973620715","pdf_url":null,"source":{"id":"https://openalex.org/S90199469","display_name":"Annals of Mathematics and Artificial Intelligence","issn_l":"1012-2443","issn":["1012-2443","1573-7470"],"is_oa":false,"is_in_doaj":false,"is_indexed_in_scopus":true,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319965","https://openalex.org/P4310319900"],"host_organization_lineage_names":["Springer Nature","Springer Science+Business Media"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false},"type":"article","type_crossref":"journal-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/A5076917986","display_name":"Vladimir Lifschitz","orcid":"https://orcid.org/0000-0001-6051-7907"},"institutions":[{"id":"https://openalex.org/I86519309","display_name":"The University of Texas at Austin","ror":"https://ror.org/00hj54h04","country_code":"US","type":"funder","lineage":["https://openalex.org/I86519309"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Vladimir Lifschitz","raw_affiliation_strings":["Department of Computer Sciences, University of Texas at Austin, Austin, TX 78712, USA ("],"affiliations":[{"raw_affiliation_string":"Department of Computer Sciences, University of Texas at Austin, Austin, TX 78712, USA (","institution_ids":["https://openalex.org/I86519309"]}]}],"institution_assertions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5076917986"],"corresponding_institution_ids":["https://openalex.org/I86519309"],"apc_list":{"value":2390,"currency":"EUR","value_usd":2990},"apc_paid":null,"fwci":6.178,"has_fulltext":true,"fulltext_origin":"ngrams","cited_by_count":28,"citation_normalized_percentile":null,"cited_by_percentile_year":{"min":87,"max":88},"biblio":{"volume":"21","issue":"2/4","first_page":"305","last_page":"320"},"is_retracted":false,"is_paratext":false,"primary_topic":null,"topics":[],"keywords":[],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.72186613},{"id":"https://openalex.org/C2780791683","wikidata":"https://www.wikidata.org/wiki/Q846785","display_name":"Action (physics)","level":2,"score":0.64431906},{"id":"https://openalex.org/C192028432","wikidata":"https://www.wikidata.org/wiki/Q845739","display_name":"Query language","level":2,"score":0.5662535},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.45465446},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.2794875},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.08554119},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"is_oa":false,"landing_page_url":"https://doi.org/10.1023/a:1018973620715","pdf_url":null,"source":{"id":"https://openalex.org/S90199469","display_name":"Annals of Mathematics and Artificial Intelligence","issn_l":"1012-2443","issn":["1012-2443","1573-7470"],"is_oa":false,"is_in_doaj":false,"is_indexed_in_scopus":true,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319965","https://openalex.org/P4310319900"],"host_organization_lineage_names":["Springer Nature","Springer Science+Business Media"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.48,"id":"https://metadata.un.org/sdg/4","display_name":"Quality education"}],"grants":[],"datasets":[],"versions":[],"referenced_works_count":29,"referenced_works":["https://openalex.org/W107281026","https://openalex.org/W117964382","https://openalex.org/W140414481","https://openalex.org/W1497201281","https://openalex.org/W1505436358","https://openalex.org/W1549412672","https://openalex.org/W1599735882","https://openalex.org/W1750885341","https://openalex.org/W175258934","https://openalex.org/W1914057355","https://openalex.org/W1993512664","https://openalex.org/W2005473008","https://openalex.org/W2012170877","https://openalex.org/W2014895071","https://openalex.org/W2038967932","https://openalex.org/W2039797670","https://openalex.org/W2044417902","https://openalex.org/W2104254677","https://openalex.org/W2121133556","https://openalex.org/W2138162238","https://openalex.org/W2165063953","https://openalex.org/W2756301","https://openalex.org/W2913048043","https://openalex.org/W2914983426","https://openalex.org/W4285719527","https://openalex.org/W54340630","https://openalex.org/W5918392","https://openalex.org/W81871881","https://openalex.org/W81942528"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2530322880","https://openalex.org/W2390279801","https://openalex.org/W2382290278","https://openalex.org/W2376932109","https://openalex.org/W2358668433","https://openalex.org/W2350741829","https://openalex.org/W2001405890","https://openalex.org/W1596801655","https://openalex.org/W1550211815"],"abstract_inverted_index":null,"abstract_inverted_index_v3":null,"cited_by_api_url":"https://api.openalex.org/works?filter=cites:W1757148883","counts_by_year":[{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2025-04-20T01:51:13.796948","created_date":"2016-06-24"}