{"id":"https://openalex.org/W1987592706","doi":"https://doi.org/10.1142/s0219622004000970","title":"IDENTIFYING \"BEST-BUYS\" IN THE MARKET OF PREPAID MOBILE TELEPHONY: AN APPLICATION OF IMPRECISE DEA","display_name":"IDENTIFYING \"BEST-BUYS\" IN THE MARKET OF PREPAID MOBILE TELEPHONY: AN APPLICATION OF IMPRECISE DEA","publication_year":2004,"publication_date":"2004-03-01","ids":{"openalex":"https://openalex.org/W1987592706","doi":"https://doi.org/10.1142/s0219622004000970","mag":"1987592706"},"language":"en","primary_location":{"id":"doi:10.1142/s0219622004000970","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s0219622004000970","pdf_url":null,"source":{"id":"https://openalex.org/S207089700","display_name":"International Journal of Information Technology & Decision Making","issn_l":"0219-6220","issn":["0219-6220","1793-6845"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Information Technology & Decision Making","raw_type":"journal-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/A5052315783","display_name":"Yiannis Smirlis","orcid":"https://orcid.org/0000-0002-6608-3326"},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":true,"raw_author_name":"Y. G. SMIRLIS","raw_affiliation_strings":["Department of Statistics  and Actuarial Sciences, University of Piraeus, Greece","Department of Statistics and Actuarial Sciences, University of Piraeus, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Statistics  and Actuarial Sciences, University of Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]},{"raw_affiliation_string":"Department of Statistics and Actuarial Sciences, University of Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036401882","display_name":"Dimitris K. Despotis","orcid":"https://orcid.org/0000-0003-2515-093X"},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"D. K. DESPOTIS","raw_affiliation_strings":["Department of Informatics, University of Piraeus, Decision Support Systems Laboratory, 80 Karaoli & Dimitriou Street,  18534 Piraeus, Greece","Department of Informatics, University of Piraeus, Decision Support Systems Laboratory, 80 Karaoli & Dimitriou Street, 18534 Piraeus, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Informatics, University of Piraeus, Decision Support Systems Laboratory, 80 Karaoli & Dimitriou Street,  18534 Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]},{"raw_affiliation_string":"Department of Informatics, University of Piraeus, Decision Support Systems Laboratory, 80 Karaoli & Dimitriou Street, 18534 Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083953561","display_name":"Josef Jablonsk\u00fd","orcid":"https://orcid.org/0000-0003-0606-354X"},"institutions":[{"id":"https://openalex.org/I35913352","display_name":"Prague University of Economics and Business","ror":"https://ror.org/029ecwj92","country_code":"CZ","type":"education","lineage":["https://openalex.org/I35913352"]}],"countries":["CZ"],"is_corresponding":false,"raw_author_name":"J. JABLONSKY","raw_affiliation_strings":["Department of Econometrics,  University of Economics Prague, Czech Republic","Department of Econometrics, University of Economics, Prague, Czech Republic"],"affiliations":[{"raw_affiliation_string":"Department of Econometrics,  University of Economics Prague, Czech Republic","institution_ids":["https://openalex.org/I35913352"]},{"raw_affiliation_string":"Department of Econometrics, University of Economics, Prague, Czech Republic","institution_ids":["https://openalex.org/I35913352"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5009408473","display_name":"Petr Fiala","orcid":"https://orcid.org/0000-0002-8517-4979"},"institutions":[{"id":"https://openalex.org/I35913352","display_name":"Prague University of Economics and Business","ror":"https://ror.org/029ecwj92","country_code":"CZ","type":"education","lineage":["https://openalex.org/I35913352"]}],"countries":["CZ"],"is_corresponding":false,"raw_author_name":"P. FIALA","raw_affiliation_strings":["Department of Econometrics,  University of Economics Prague, Czech Republic","Department of Econometrics, University of Economics, Prague, Czech Republic"],"affiliations":[{"raw_affiliation_string":"Department of Econometrics,  University of Economics Prague, Czech Republic","institution_ids":["https://openalex.org/I35913352"]},{"raw_affiliation_string":"Department of Econometrics, University of Economics, Prague, Czech Republic","institution_ids":["https://openalex.org/I35913352"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5052315783"],"corresponding_institution_ids":["https://openalex.org/I154757721"],"apc_list":null,"apc_paid":null,"fwci":0.434,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":{"value":0.66852975,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"03","issue":"01","first_page":"167","last_page":"177"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10357","display_name":"Efficiency Analysis Using DEA","score":0.9958000183105469,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10357","display_name":"Efficiency Analysis Using DEA","score":0.9958000183105469,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11161","display_name":"Consumer Market Behavior and Pricing","score":0.9932000041007996,"subfield":{"id":"https://openalex.org/subfields/1406","display_name":"Marketing"},"field":{"id":"https://openalex.org/fields/14","display_name":"Business, Management and Accounting"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11043","display_name":"Merger and Competition Analysis","score":0.9557999968528748,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/product","display_name":"Product (mathematics)","score":0.6161661148071289},{"id":"https://openalex.org/keywords/value","display_name":"Value (mathematics)","score":0.5104533433914185},{"id":"https://openalex.org/keywords/term","display_name":"Term (time)","score":0.4685407876968384},{"id":"https://openalex.org/keywords/economics","display_name":"Economics","score":0.4415373206138611},{"id":"https://openalex.org/keywords/service","display_name":"Service (business)","score":0.4154275059700012},{"id":"https://openalex.org/keywords/econometrics","display_name":"Econometrics","score":0.3957294821739197},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3673343360424042},{"id":"https://openalex.org/keywords/marketing","display_name":"Marketing","score":0.328797310590744},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.28516098856925964},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.23078042268753052},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.17022860050201416}],"concepts":[{"id":"https://openalex.org/C90673727","wikidata":"https://www.wikidata.org/wiki/Q901718","display_name":"Product (mathematics)","level":2,"score":0.6161661148071289},{"id":"https://openalex.org/C2776291640","wikidata":"https://www.wikidata.org/wiki/Q2912517","display_name":"Value (mathematics)","level":2,"score":0.5104533433914185},{"id":"https://openalex.org/C61797465","wikidata":"https://www.wikidata.org/wiki/Q1188986","display_name":"Term (time)","level":2,"score":0.4685407876968384},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.4415373206138611},{"id":"https://openalex.org/C2780378061","wikidata":"https://www.wikidata.org/wiki/Q25351891","display_name":"Service (business)","level":2,"score":0.4154275059700012},{"id":"https://openalex.org/C149782125","wikidata":"https://www.wikidata.org/wiki/Q160039","display_name":"Econometrics","level":1,"score":0.3957294821739197},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3673343360424042},{"id":"https://openalex.org/C162853370","wikidata":"https://www.wikidata.org/wiki/Q39809","display_name":"Marketing","level":1,"score":0.328797310590744},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.28516098856925964},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.23078042268753052},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.17022860050201416},{"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/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1142/s0219622004000970","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s0219622004000970","pdf_url":null,"source":{"id":"https://openalex.org/S207089700","display_name":"International Journal of Information Technology & Decision Making","issn_l":"0219-6220","issn":["0219-6220","1793-6845"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Information Technology & Decision Making","raw_type":"journal-article"},{"id":"pmh:oai:RePEc:wsi:ijitdm:v:03:y:2004:i:01:n:s0219622004000970","is_oa":false,"landing_page_url":"http://www.worldscientific.com/doi/abs/10.1142/S0219622004000970","pdf_url":null,"source":{"id":"https://openalex.org/S4306401271","display_name":"RePEc: Research Papers in Economics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I77793887","host_organization_name":"Federal Reserve Bank of St. Louis","host_organization_lineage":["https://openalex.org/I77793887"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W2006169339","https://openalex.org/W2018454036","https://openalex.org/W2046403675","https://openalex.org/W2075873452","https://openalex.org/W2076452041","https://openalex.org/W2106504676","https://openalex.org/W2759654202","https://openalex.org/W4205881252","https://openalex.org/W4239203632"],"related_works":["https://openalex.org/W2899084033","https://openalex.org/W1141446299","https://openalex.org/W2115549111","https://openalex.org/W2073408378","https://openalex.org/W2030617584","https://openalex.org/W2056210026","https://openalex.org/W2066824604","https://openalex.org/W2386173171","https://openalex.org/W2072165270","https://openalex.org/W4312363453"],"abstract_inverted_index":{"Value-for-money":[0],"is":[1,38,117],"a":[2,10,21,26,30,69,101,123],"widely":[3],"used":[4],"criterion":[5,59],"to":[6,108,112,120,181],"locate":[7],"\"best-buys\"":[8],"in":[9,134,187],"market":[11,190],"of":[12,24,48,53,100],"competitive":[13],"products":[14],"or":[15,32,89,110,150,162,170],"services.":[16],"The":[17],"term":[18,36],"\"value\"":[19],"represents":[20],"composite":[22],"measure":[23],"what":[25,39],"consumer":[27,41],"gets":[28],"from":[29,106],"product":[31,103,141],"service,":[33],"while":[34],"the":[35,40,46,51,57,83,98,127,130,135,138,177,188,192],"\"money\"":[37],"pays":[42],"for":[43,160],"it.":[44],"In":[45,80,172],"absence":[47],"individual":[49],"preferences,":[50],"problem":[52],"identifying":[54],"best-buys":[55],"by":[56,147,157,168,191],"value-for-money":[58,193],"can":[60,104],"be":[61,144],"formulated":[62],"as":[63],"an":[64],"imprecise":[65,178],"DEA":[66,84,179],"model":[67,180],"with":[68,82],"single":[70],"input":[71],"(price)":[72],"and":[73,77,129],"multiple":[74],"outputs":[75,142],"(indices":[76],"performance":[78],"estimates).":[79],"accordance":[81],"terminology,":[85],"efficient":[86],"units":[87],"(products":[88],"services)":[90],"are":[91],"those":[92],"that":[93],"worth":[94],"their":[95],"price.":[96],"As":[97],"price":[99,132],"particular":[102],"vary":[105],"dealer":[107,109],"due":[111],"different":[113,158],"discount":[114],"policies,":[115],"it":[116],"usually":[118],"known":[119],"lie":[121],"within":[122],"bounded":[124,151],"interval,":[125],"between":[126],"lowest":[128],"highest":[131],"recorded":[133],"market.":[136],"On":[137],"other":[139],"hand,":[140],"may":[143],"measured":[145],"either":[146],"exact":[148],"values":[149],"intervals":[152],"(overall":[153],"evaluation":[154],"judgments":[155],"made":[156],"experts,":[159],"example)":[161],"ordinal":[163],"variables":[164],"(product":[165],"ratings":[166],"obtained":[167],"experts":[169],"surveys).":[171],"this":[173],"paper,":[174],"we":[175],"use":[176],"classify":[182],"prepaid":[183],"mobile":[184],"telephony":[185],"packages":[186],"Greek":[189],"criterion.":[194]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}