{"id":"https://openalex.org/W2152891587","doi":"https://doi.org/10.1145/2620678.2620679","title":"The Under-Performing Unfold","display_name":"The Under-Performing Unfold","publication_year":2013,"publication_date":"2013-08-28","ids":{"openalex":"https://openalex.org/W2152891587","doi":"https://doi.org/10.1145/2620678.2620679","mag":"2152891587"},"language":"en","primary_location":{"id":"doi:10.1145/2620678.2620679","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2620678.2620679","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 25th symposium on Implementation and Application of Functional 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/A5003806684","display_name":"Jennifer Hackett","orcid":null},"institutions":[{"id":"https://openalex.org/I142263535","display_name":"University of Nottingham","ror":"https://ror.org/01ee9ar58","country_code":"GB","type":"education","lineage":["https://openalex.org/I142263535"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Jennifer Hackett","raw_affiliation_strings":["University of Nottingham"],"affiliations":[{"raw_affiliation_string":"University of Nottingham","institution_ids":["https://openalex.org/I142263535"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069634739","display_name":"Graham Hutton","orcid":"https://orcid.org/0000-0001-9584-5150"},"institutions":[{"id":"https://openalex.org/I142263535","display_name":"University of Nottingham","ror":"https://ror.org/01ee9ar58","country_code":"GB","type":"education","lineage":["https://openalex.org/I142263535"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Graham Hutton","raw_affiliation_strings":["University of Nottingham"],"affiliations":[{"raw_affiliation_string":"University of Nottingham","institution_ids":["https://openalex.org/I142263535"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5060258989","display_name":"Mauro Jaskelioff","orcid":"https://orcid.org/0000-0001-7865-3341"},"institutions":[{"id":"https://openalex.org/I151201029","display_name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas","ror":"https://ror.org/03cqe8w59","country_code":"AR","type":"funder","lineage":["https://openalex.org/I151201029","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]},{"id":"https://openalex.org/I4210109384","display_name":"Centro Internacional Franco-Argentino de Ciencias de la Informaci\u00f3n y de Sistemas","ror":"https://ror.org/02m19wv39","country_code":"AR","type":"facility","lineage":["https://openalex.org/I151201029","https://openalex.org/I21491767","https://openalex.org/I4141589","https://openalex.org/I4210107757","https://openalex.org/I4210109384","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]},{"id":"https://openalex.org/I4141589","display_name":"National University of Rosario","ror":"https://ror.org/02tphfq59","country_code":"AR","type":"education","lineage":["https://openalex.org/I4141589"]}],"countries":["AR"],"is_corresponding":false,"raw_author_name":"Mauro Jaskelioff","raw_affiliation_strings":["Universidad Nacional de Rosario, Argentina, CIFASIS--CONICET, Argentina"],"affiliations":[{"raw_affiliation_string":"Universidad Nacional de Rosario, Argentina, CIFASIS--CONICET, Argentina","institution_ids":["https://openalex.org/I4141589","https://openalex.org/I151201029","https://openalex.org/I4210109384"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5003806684"],"corresponding_institution_ids":["https://openalex.org/I142263535"],"apc_list":null,"apc_paid":null,"fwci":1.4427,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.8646235,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"4321","last_page":"4332"},"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":0.9993000030517578,"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/T10743","display_name":"Software Testing and Debugging Techniques","score":0.9937999844551086,"subfield":{"id":"https://openalex.org/subfields/1712","display_name":"Software"},"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/coinduction","display_name":"Coinduction","score":0.952457070350647},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7764683961868286},{"id":"https://openalex.org/keywords/factorization","display_name":"Factorization","score":0.6276889443397522},{"id":"https://openalex.org/keywords/simple","display_name":"Simple (philosophy)","score":0.5964905023574829},{"id":"https://openalex.org/keywords/abstraction","display_name":"Abstraction","score":0.5875394344329834},{"id":"https://openalex.org/keywords/representation","display_name":"Representation (politics)","score":0.5781739950180054},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.5596475601196289},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.5347959399223328},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.48737508058547974},{"id":"https://openalex.org/keywords/intermediate-language","display_name":"Intermediate language","score":0.45345258712768555},{"id":"https://openalex.org/keywords/range","display_name":"Range (aeronautics)","score":0.44273531436920166},{"id":"https://openalex.org/keywords/operator","display_name":"Operator (biology)","score":0.4310644268989563},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.24091410636901855},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.17706909775733948},{"id":"https://openalex.org/keywords/mathematical-proof","display_name":"Mathematical proof","score":0.06469464302062988},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.05594941973686218}],"concepts":[{"id":"https://openalex.org/C40220748","wikidata":"https://www.wikidata.org/wiki/Q4227156","display_name":"Coinduction","level":3,"score":0.952457070350647},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7764683961868286},{"id":"https://openalex.org/C187834632","wikidata":"https://www.wikidata.org/wiki/Q188804","display_name":"Factorization","level":2,"score":0.6276889443397522},{"id":"https://openalex.org/C2780586882","wikidata":"https://www.wikidata.org/wiki/Q7520643","display_name":"Simple (philosophy)","level":2,"score":0.5964905023574829},{"id":"https://openalex.org/C124304363","wikidata":"https://www.wikidata.org/wiki/Q673661","display_name":"Abstraction","level":2,"score":0.5875394344329834},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.5781739950180054},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.5596475601196289},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.5347959399223328},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.48737508058547974},{"id":"https://openalex.org/C77660490","wikidata":"https://www.wikidata.org/wiki/Q244916","display_name":"Intermediate language","level":3,"score":0.45345258712768555},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.44273531436920166},{"id":"https://openalex.org/C17020691","wikidata":"https://www.wikidata.org/wiki/Q139677","display_name":"Operator (biology)","level":5,"score":0.4310644268989563},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.24091410636901855},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.17706909775733948},{"id":"https://openalex.org/C108710211","wikidata":"https://www.wikidata.org/wiki/Q11538","display_name":"Mathematical proof","level":2,"score":0.06469464302062988},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.05594941973686218},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"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/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"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/C94625758","wikidata":"https://www.wikidata.org/wiki/Q7163","display_name":"Politics","level":2,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"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/C169590947","wikidata":"https://www.wikidata.org/wiki/Q47506","display_name":"Compiler","level":2,"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/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2620678.2620679","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2620678.2620679","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 25th symposium on Implementation and Application of Functional Languages","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W15565884","https://openalex.org/W1491165055","https://openalex.org/W1507693023","https://openalex.org/W1556536463","https://openalex.org/W1565457335","https://openalex.org/W1587758675","https://openalex.org/W1608714802","https://openalex.org/W1732358472","https://openalex.org/W1765915613","https://openalex.org/W1963928257","https://openalex.org/W1966981171","https://openalex.org/W1977815132","https://openalex.org/W2000212732","https://openalex.org/W2016213479","https://openalex.org/W2020580827","https://openalex.org/W2035636826","https://openalex.org/W2053996738","https://openalex.org/W2066868279","https://openalex.org/W2071978920","https://openalex.org/W2081124914","https://openalex.org/W2108039078","https://openalex.org/W2110907326","https://openalex.org/W2116151771","https://openalex.org/W2117818027","https://openalex.org/W2118165414","https://openalex.org/W2124318699","https://openalex.org/W2130163138","https://openalex.org/W2160809209","https://openalex.org/W2164343886","https://openalex.org/W2208923056","https://openalex.org/W2561675875","https://openalex.org/W4252345548","https://openalex.org/W4252367705","https://openalex.org/W4301005547"],"related_works":["https://openalex.org/W1523149969","https://openalex.org/W4246799966","https://openalex.org/W2530227870","https://openalex.org/W2737623643","https://openalex.org/W1680684178","https://openalex.org/W2158409018","https://openalex.org/W1785480219","https://openalex.org/W2908075982","https://openalex.org/W3023599973","https://openalex.org/W2152891587"],"abstract_inverted_index":{"This":[0],"paper":[1],"presents":[2],"a":[3,39,69,81],"new":[4],"approach":[5],"to":[6],"optimising":[7],"corecursive":[8],"programs":[9,17],"by":[10,45],"factorisation.":[11],"In":[12],"particular,":[13],"we":[14,54],"focus":[15],"on":[16],"written":[18],"using":[19],"the":[20,29],"corecursion":[21],"operator":[22],"unfold.":[23],"We":[24,67],"use":[25],"and":[26,35,49,63],"expand":[27],"upon":[28],"proof":[30],"techniques":[31],"of":[32,41,47,83],"guarded":[33],"coinduction":[34],"unfold":[36],"fusion,":[37],"capturing":[38],"pattern":[40,53],"generalising":[42],"coinductive":[43],"hypotheses":[44],"means":[46],"abstraction":[48],"representation":[50],"functions.":[51],"The":[52],"observe":[55],"is":[56,64],"simple,":[57],"has":[58],"not":[59],"been":[60],"observed":[61],"before,":[62],"widely":[65],"applicable.":[66],"develop":[68],"general":[70],"program":[71],"factorisation":[72],"theorem":[73],"from":[74],"this":[75],"pattern,":[76],"demonstrating":[77],"its":[78],"utility":[79],"with":[80],"range":[82],"practical":[84],"examples.":[85]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
