{"id":"https://openalex.org/W1766332311","doi":"https://doi.org/10.1007/978-1-4684-3384-5_11","title":"Negation as Failure","display_name":"Negation as Failure","publication_year":1978,"publication_date":"1978-01-01","ids":{"openalex":"https://openalex.org/W1766332311","doi":"https://doi.org/10.1007/978-1-4684-3384-5_11","mag":"1766332311"},"language":"en","primary_location":{"id":"doi:10.1007/978-1-4684-3384-5_11","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-1-4684-3384-5_11","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Logic and Data Bases","raw_type":"book-chapter"},"type":"book-chapter","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/A5033091818","display_name":"Keith Clark","orcid":"https://orcid.org/0009-0008-1046-1368"},"institutions":[{"id":"https://openalex.org/I166337079","display_name":"Queen Mary University of London","ror":"https://ror.org/026zzn846","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I166337079"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Keith L. Clark","raw_affiliation_strings":["Department of Computer Science & Statistics, Queen Mary College, London, England"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science & Statistics, Queen Mary College, London, England","institution_ids":["https://openalex.org/I166337079"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5033091818"],"corresponding_institution_ids":["https://openalex.org/I166337079"],"apc_list":null,"apc_paid":null,"fwci":7.0783,"has_fulltext":false,"cited_by_count":2035,"citation_normalized_percentile":{"value":0.96835443,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"293","last_page":"322"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10215","display_name":"Semantic Web and Ontologies","score":0.9998999834060669,"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":0.9998999834060669,"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":0.9997000098228455,"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/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9986000061035156,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/negation","display_name":"Negation","score":0.8505580425262451},{"id":"https://openalex.org/keywords/base","display_name":"Base (topology)","score":0.7402601838111877},{"id":"https://openalex.org/keywords/axiom","display_name":"Axiom","score":0.6599748730659485},{"id":"https://openalex.org/keywords/negation-as-failure","display_name":"Negation as failure","score":0.609795331954956},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.599075198173523},{"id":"https://openalex.org/keywords/horn-clause","display_name":"Horn clause","score":0.5387350916862488},{"id":"https://openalex.org/keywords/rule-of-inference","display_name":"Rule of inference","score":0.52861088514328},{"id":"https://openalex.org/keywords/inference","display_name":"Inference","score":0.5124938488006592},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.49802088737487793},{"id":"https://openalex.org/keywords/process","display_name":"Process (computing)","score":0.45257681608200073},{"id":"https://openalex.org/keywords/relational-database","display_name":"Relational database","score":0.4324011206626892},{"id":"https://openalex.org/keywords/relation","display_name":"Relation (database)","score":0.4117122292518616},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.3807191550731659},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.37161576747894287},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.32792991399765015},{"id":"https://openalex.org/keywords/natural-language-processing","display_name":"Natural language processing","score":0.3278105556964874},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.2854618430137634},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.27657756209373474},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2305000126361847},{"id":"https://openalex.org/keywords/autoepistemic-logic","display_name":"Autoepistemic logic","score":0.20813819766044617},{"id":"https://openalex.org/keywords/logic-programming","display_name":"Logic programming","score":0.17763188481330872},{"id":"https://openalex.org/keywords/description-logic","display_name":"Description logic","score":0.1003682017326355}],"concepts":[{"id":"https://openalex.org/C2185349","wikidata":"https://www.wikidata.org/wiki/Q190558","display_name":"Negation","level":2,"score":0.8505580425262451},{"id":"https://openalex.org/C42058472","wikidata":"https://www.wikidata.org/wiki/Q810214","display_name":"Base (topology)","level":2,"score":0.7402601838111877},{"id":"https://openalex.org/C167729594","wikidata":"https://www.wikidata.org/wiki/Q17736","display_name":"Axiom","level":2,"score":0.6599748730659485},{"id":"https://openalex.org/C194146651","wikidata":"https://www.wikidata.org/wiki/Q2119400","display_name":"Negation as failure","level":5,"score":0.609795331954956},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.599075198173523},{"id":"https://openalex.org/C189790780","wikidata":"https://www.wikidata.org/wiki/Q933932","display_name":"Horn clause","level":3,"score":0.5387350916862488},{"id":"https://openalex.org/C3746660","wikidata":"https://www.wikidata.org/wiki/Q1068763","display_name":"Rule of inference","level":2,"score":0.52861088514328},{"id":"https://openalex.org/C2776214188","wikidata":"https://www.wikidata.org/wiki/Q408386","display_name":"Inference","level":2,"score":0.5124938488006592},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.49802088737487793},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.45257681608200073},{"id":"https://openalex.org/C5655090","wikidata":"https://www.wikidata.org/wiki/Q192588","display_name":"Relational database","level":2,"score":0.4324011206626892},{"id":"https://openalex.org/C25343380","wikidata":"https://www.wikidata.org/wiki/Q277521","display_name":"Relation (database)","level":2,"score":0.4117122292518616},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.3807191550731659},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.37161576747894287},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.32792991399765015},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.3278105556964874},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.2854618430137634},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.27657756209373474},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2305000126361847},{"id":"https://openalex.org/C3845977","wikidata":"https://www.wikidata.org/wiki/Q4826262","display_name":"Autoepistemic logic","level":4,"score":0.20813819766044617},{"id":"https://openalex.org/C128838566","wikidata":"https://www.wikidata.org/wiki/Q275603","display_name":"Logic programming","level":2,"score":0.17763188481330872},{"id":"https://openalex.org/C102993220","wikidata":"https://www.wikidata.org/wiki/Q387196","display_name":"Description logic","level":2,"score":0.1003682017326355},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C203659156","wikidata":"https://www.wikidata.org/wiki/Q6934805","display_name":"Multimodal logic","level":3,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-1-4684-3384-5_11","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-1-4684-3384-5_11","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Logic and Data Bases","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W10948978","https://openalex.org/W155951062","https://openalex.org/W329483354","https://openalex.org/W1530765221","https://openalex.org/W1541540802","https://openalex.org/W1592959421","https://openalex.org/W1593077566","https://openalex.org/W1993449345","https://openalex.org/W2021473914","https://openalex.org/W2105486835","https://openalex.org/W2165467455","https://openalex.org/W2185907055","https://openalex.org/W2219407530","https://openalex.org/W4242890543","https://openalex.org/W4299617930"],"related_works":["https://openalex.org/W1596105581","https://openalex.org/W4214701509","https://openalex.org/W4212824748","https://openalex.org/W2077585551","https://openalex.org/W2015627330","https://openalex.org/W4388593575","https://openalex.org/W1605488371","https://openalex.org/W286008560","https://openalex.org/W3197254143","https://openalex.org/W2139420949"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":12},{"year":2024,"cited_by_count":25},{"year":2023,"cited_by_count":18},{"year":2022,"cited_by_count":8},{"year":2021,"cited_by_count":26},{"year":2020,"cited_by_count":31},{"year":2019,"cited_by_count":30},{"year":2018,"cited_by_count":26},{"year":2017,"cited_by_count":29},{"year":2016,"cited_by_count":41},{"year":2015,"cited_by_count":32},{"year":2014,"cited_by_count":41},{"year":2013,"cited_by_count":53},{"year":2012,"cited_by_count":51}],"updated_date":"2026-05-12T08:28:47.272897","created_date":"2025-10-10T00:00:00"}
