{"id":"https://openalex.org/W2097795376","doi":"https://doi.org/10.1007/978-3-540-74456-6_4","title":"Hierarchies of Infinite Structures Generated by Pushdown Automata and Recursion Schemes","display_name":"Hierarchies of Infinite Structures Generated by Pushdown Automata and Recursion Schemes","publication_year":2007,"publication_date":"2007-01-01","ids":{"openalex":"https://openalex.org/W2097795376","doi":"https://doi.org/10.1007/978-3-540-74456-6_4","mag":"2097795376"},"language":"en","primary_location":{"id":"doi:10.1007/978-3-540-74456-6_4","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-540-74456-6_4","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","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/A5025152913","display_name":"C.-H. Luke Ong","orcid":"https://orcid.org/0000-0001-7509-680X"},"institutions":[{"id":"https://openalex.org/I40120149","display_name":"University of Oxford","ror":"https://ror.org/052gg0110","country_code":"GB","type":"education","lineage":["https://openalex.org/I40120149"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"C. -H. L. Ong","raw_affiliation_strings":["Oxford University Computing Laboratory, Wolfson Building, Parks Road, Oxford OX1 3QD, England","Oxford University, Computing Laboratory, Oxford, England"],"affiliations":[{"raw_affiliation_string":"Oxford University Computing Laboratory, Wolfson Building, Parks Road, Oxford OX1 3QD, England","institution_ids":["https://openalex.org/I40120149"]},{"raw_affiliation_string":"Oxford University, Computing Laboratory, Oxford, England","institution_ids":["https://openalex.org/I40120149"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5025152913"],"corresponding_institution_ids":["https://openalex.org/I40120149"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":0.916,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.77505919,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"15","last_page":"21"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10126","display_name":"Logic, programming, and type systems","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/T10126","display_name":"Logic, programming, and type systems","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/T10142","display_name":"Formal Methods in Verification","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"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/T11567","display_name":"semigroups and automata theory","score":0.9994000196456909,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"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/pushdown-automaton","display_name":"Pushdown automaton","score":0.8438254594802856},{"id":"https://openalex.org/keywords/recursion","display_name":"Recursion (computer science)","score":0.8300278782844543},{"id":"https://openalex.org/keywords/decidability","display_name":"Decidability","score":0.7682397961616516},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7261808514595032},{"id":"https://openalex.org/keywords/embedded-pushdown-automaton","display_name":"Embedded pushdown automaton","score":0.6721658706665039},{"id":"https://openalex.org/keywords/deterministic-pushdown-automaton","display_name":"Deterministic pushdown automaton","score":0.6395362019538879},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.5416635870933533},{"id":"https://openalex.org/keywords/automaton","display_name":"Automaton","score":0.5159698128700256},{"id":"https://openalex.org/keywords/nested-word","display_name":"Nested word","score":0.46863818168640137},{"id":"https://openalex.org/keywords/data-structure","display_name":"Data structure","score":0.42076507210731506},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4195076823234558},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.34312695264816284},{"id":"https://openalex.org/keywords/automata-theory","display_name":"Automata theory","score":0.26782989501953125},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.22355613112449646},{"id":"https://openalex.org/keywords/quantum-finite-automata","display_name":"Quantum finite automata","score":0.14898666739463806},{"id":"https://openalex.org/keywords/nondeterministic-finite-automaton","display_name":"Nondeterministic finite automaton","score":0.07763835787773132},{"id":"https://openalex.org/keywords/parsing","display_name":"Parsing","score":0.0720314085483551}],"concepts":[{"id":"https://openalex.org/C77944639","wikidata":"https://www.wikidata.org/wiki/Q751443","display_name":"Pushdown automaton","level":3,"score":0.8438254594802856},{"id":"https://openalex.org/C168773036","wikidata":"https://www.wikidata.org/wiki/Q264164","display_name":"Recursion (computer science)","level":2,"score":0.8300278782844543},{"id":"https://openalex.org/C153269930","wikidata":"https://www.wikidata.org/wiki/Q430001","display_name":"Decidability","level":2,"score":0.7682397961616516},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7261808514595032},{"id":"https://openalex.org/C27034413","wikidata":"https://www.wikidata.org/wiki/Q5370010","display_name":"Embedded pushdown automaton","level":5,"score":0.6721658706665039},{"id":"https://openalex.org/C74919329","wikidata":"https://www.wikidata.org/wiki/Q378713","display_name":"Deterministic pushdown automaton","level":5,"score":0.6395362019538879},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.5416635870933533},{"id":"https://openalex.org/C112505250","wikidata":"https://www.wikidata.org/wiki/Q787116","display_name":"Automaton","level":2,"score":0.5159698128700256},{"id":"https://openalex.org/C92117001","wikidata":"https://www.wikidata.org/wiki/Q6997829","display_name":"Nested word","level":5,"score":0.46863818168640137},{"id":"https://openalex.org/C162319229","wikidata":"https://www.wikidata.org/wiki/Q175263","display_name":"Data structure","level":2,"score":0.42076507210731506},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4195076823234558},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.34312695264816284},{"id":"https://openalex.org/C116248031","wikidata":"https://www.wikidata.org/wiki/Q214526","display_name":"Automata theory","level":3,"score":0.26782989501953125},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.22355613112449646},{"id":"https://openalex.org/C174327141","wikidata":"https://www.wikidata.org/wiki/Q176837","display_name":"Quantum finite automata","level":4,"score":0.14898666739463806},{"id":"https://openalex.org/C158008952","wikidata":"https://www.wikidata.org/wiki/Q617295","display_name":"Nondeterministic finite automaton","level":4,"score":0.07763835787773132},{"id":"https://openalex.org/C186644900","wikidata":"https://www.wikidata.org/wiki/Q194152","display_name":"Parsing","level":2,"score":0.0720314085483551},{"id":"https://openalex.org/C134083981","wikidata":"https://www.wikidata.org/wiki/Q1754022","display_name":"Tree-adjoining grammar","level":4,"score":0.0},{"id":"https://openalex.org/C97212296","wikidata":"https://www.wikidata.org/wiki/Q338047","display_name":"Context-free grammar","level":3,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-3-540-74456-6_4","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-540-74456-6_4","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W1493005098","https://openalex.org/W1517623691","https://openalex.org/W1518696294","https://openalex.org/W1540015096","https://openalex.org/W1559784852","https://openalex.org/W1585989904","https://openalex.org/W1586093680","https://openalex.org/W1589421353","https://openalex.org/W1630483081","https://openalex.org/W1759451798","https://openalex.org/W1802033981","https://openalex.org/W1809956864","https://openalex.org/W1971416129","https://openalex.org/W1971835879","https://openalex.org/W2007098021","https://openalex.org/W2018379587","https://openalex.org/W2020520119","https://openalex.org/W2024189573","https://openalex.org/W2088846354","https://openalex.org/W2102644483","https://openalex.org/W2132638915","https://openalex.org/W2138308600","https://openalex.org/W2140476040","https://openalex.org/W2160005349","https://openalex.org/W2162583406","https://openalex.org/W2164822567","https://openalex.org/W2246750081","https://openalex.org/W2311242405","https://openalex.org/W2363970847","https://openalex.org/W2442545619","https://openalex.org/W2808195962","https://openalex.org/W3022006420","https://openalex.org/W4240244556"],"related_works":["https://openalex.org/W392685101","https://openalex.org/W1972232894","https://openalex.org/W2067895928","https://openalex.org/W1511257926","https://openalex.org/W2171067235","https://openalex.org/W2522490152","https://openalex.org/W2472752294","https://openalex.org/W1991406344","https://openalex.org/W1486486721","https://openalex.org/W127918926"],"abstract_inverted_index":null,"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}