{"id":"https://openalex.org/W162848099","doi":"https://doi.org/10.1007/978-3-642-39274-0_18","title":"Some Decision Problems Concerning NPDAs, Palindromes, and Dyck Languages","display_name":"Some Decision Problems Concerning NPDAs, Palindromes, and Dyck Languages","publication_year":2013,"publication_date":"2013-01-01","ids":{"openalex":"https://openalex.org/W162848099","doi":"https://doi.org/10.1007/978-3-642-39274-0_18","mag":"162848099"},"language":"en","primary_location":{"id":"doi:10.1007/978-3-642-39274-0_18","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-642-39274-0_18","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":"conference-paper","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/A5110211208","display_name":"\u00d3scar H. Ibarra","orcid":null},"institutions":[{"id":"https://openalex.org/I154570441","display_name":"University of California, Santa Barbara","ror":"https://ror.org/02t274463","country_code":"US","type":"education","lineage":["https://openalex.org/I154570441"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Oscar H. Ibarra","raw_affiliation_strings":["Department of Computer Science, University of California, Santa Barbara, USA","Dept. of Computer Science, Univ. of California, Santa Barbara, CA#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of California, Santa Barbara, USA","institution_ids":["https://openalex.org/I154570441"]},{"raw_affiliation_string":"Dept. of Computer Science, Univ. of California, Santa Barbara, CA#TAB#","institution_ids":["https://openalex.org/I154570441"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065615032","display_name":"Bala Ravikumar","orcid":null},"institutions":[{"id":"https://openalex.org/I158011677","display_name":"Sonoma State University","ror":"https://ror.org/04wjxkk25","country_code":"US","type":"education","lineage":["https://openalex.org/I158011677"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Bala Ravikumar","raw_affiliation_strings":["Department of Computer & Engineering Science, Sonoma State University, Rohnert Park, USA","Department of Computer & Engineering Science, Sonoma State University, Rohnert Park, CA#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer & Engineering Science, Sonoma State University, Rohnert Park, USA","institution_ids":["https://openalex.org/I158011677"]},{"raw_affiliation_string":"Department of Computer & Engineering Science, Sonoma State University, Rohnert Park, CA#TAB#","institution_ids":["https://openalex.org/I158011677"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.02554681,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"193","last_page":"207"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9998999834060669,"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/T12029","display_name":"DNA and Biological Computing","score":0.9936000108718872,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10181","display_name":"Natural Language Processing Techniques","score":0.9932000041007996,"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/undecidable-problem","display_name":"Undecidable problem","score":0.9265895485877991},{"id":"https://openalex.org/keywords/decidability","display_name":"Decidability","score":0.8952223658561707},{"id":"https://openalex.org/keywords/bounded-function","display_name":"Bounded function","score":0.7389215230941772},{"id":"https://openalex.org/keywords/decision-problem","display_name":"Decision problem","score":0.596376895904541},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.5326544642448425},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.5247278809547424},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.4816262125968933},{"id":"https://openalex.org/keywords/equivalence","display_name":"Equivalence (formal languages)","score":0.45934849977493286},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4092636704444885},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.373269259929657},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.20212247967720032}],"concepts":[{"id":"https://openalex.org/C192034797","wikidata":"https://www.wikidata.org/wiki/Q3502995","display_name":"Undecidable problem","level":3,"score":0.9265895485877991},{"id":"https://openalex.org/C153269930","wikidata":"https://www.wikidata.org/wiki/Q430001","display_name":"Decidability","level":2,"score":0.8952223658561707},{"id":"https://openalex.org/C34388435","wikidata":"https://www.wikidata.org/wiki/Q2267362","display_name":"Bounded function","level":2,"score":0.7389215230941772},{"id":"https://openalex.org/C115988155","wikidata":"https://www.wikidata.org/wiki/Q3262192","display_name":"Decision problem","level":2,"score":0.596376895904541},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.5326544642448425},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.5247278809547424},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.4816262125968933},{"id":"https://openalex.org/C2780069185","wikidata":"https://www.wikidata.org/wiki/Q7977945","display_name":"Equivalence (formal languages)","level":2,"score":0.45934849977493286},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4092636704444885},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.373269259929657},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.20212247967720032},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"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/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-3-642-39274-0_18","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-642-39274-0_18","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":[{"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions","score":0.6700000166893005}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":27,"referenced_works":["https://openalex.org/W177392600","https://openalex.org/W1496412704","https://openalex.org/W1535681052","https://openalex.org/W1549337876","https://openalex.org/W1589421353","https://openalex.org/W1598450631","https://openalex.org/W1921404173","https://openalex.org/W1925197043","https://openalex.org/W1979876920","https://openalex.org/W2002089154","https://openalex.org/W2002922589","https://openalex.org/W2009570821","https://openalex.org/W2023999667","https://openalex.org/W2024522546","https://openalex.org/W2036890855","https://openalex.org/W2061970672","https://openalex.org/W2065579926","https://openalex.org/W2084335565","https://openalex.org/W2092008211","https://openalex.org/W2109548990","https://openalex.org/W2125766500","https://openalex.org/W2131390643","https://openalex.org/W2137124862","https://openalex.org/W2479946866","https://openalex.org/W3214380909","https://openalex.org/W4245668478","https://openalex.org/W4302964898"],"related_works":["https://openalex.org/W4234189135","https://openalex.org/W2170336571","https://openalex.org/W2489809986","https://openalex.org/W3022248317","https://openalex.org/W2585890227","https://openalex.org/W3144220040","https://openalex.org/W1693995122","https://openalex.org/W1543051890","https://openalex.org/W1594629328","https://openalex.org/W2618109676"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-08-04T08:18:43.703281","created_date":"2025-10-10T00:00:00"}