{"id":"https://openalex.org/W2160306841","doi":"https://doi.org/10.1145/2597073.2597107","title":"Estimating development effort in Free/Open source software projects by mining software repositories: a case study of OpenStack","display_name":"Estimating development effort in Free/Open source software projects by mining software repositories: a case study of OpenStack","publication_year":2014,"publication_date":"2014-05-20","ids":{"openalex":"https://openalex.org/W2160306841","doi":"https://doi.org/10.1145/2597073.2597107","mag":"2160306841"},"language":"en","primary_location":{"id":"doi:10.1145/2597073.2597107","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2597073.2597107","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 11th Working Conference on Mining Software Repositories","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/A5061131972","display_name":"Greg\u00f3rio Robles","orcid":"https://orcid.org/0000-0002-1442-6761"},"institutions":[{"id":"https://openalex.org/I182083151","display_name":"Universidad Rey Juan Carlos","ror":"https://ror.org/01v5cv687","country_code":"ES","type":"education","lineage":["https://openalex.org/I182083151"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Gregorio Robles","raw_affiliation_strings":["Universidad Rey Juan Carlos, Spain"],"affiliations":[{"raw_affiliation_string":"Universidad Rey Juan Carlos, Spain","institution_ids":["https://openalex.org/I182083151"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066580987","display_name":"Jes\u00fas M. Gonz\u00e1lez-Barahona","orcid":"https://orcid.org/0000-0001-9682-460X"},"institutions":[{"id":"https://openalex.org/I182083151","display_name":"Universidad Rey Juan Carlos","ror":"https://ror.org/01v5cv687","country_code":"ES","type":"education","lineage":["https://openalex.org/I182083151"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Jes\u00fas M. Gonz\u00e1lez-Barahona","raw_affiliation_strings":["Universidad Rey Juan Carlos, Spain"],"affiliations":[{"raw_affiliation_string":"Universidad Rey Juan Carlos, Spain","institution_ids":["https://openalex.org/I182083151"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057365908","display_name":"Carlos Cervig\u00f3n","orcid":"https://orcid.org/0000-0001-9941-7751"},"institutions":[{"id":"https://openalex.org/I182083151","display_name":"Universidad Rey Juan Carlos","ror":"https://ror.org/01v5cv687","country_code":"ES","type":"education","lineage":["https://openalex.org/I182083151"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Carlos Cervig\u00f3n","raw_affiliation_strings":["Universidad Rey Juan Carlos, Spain"],"affiliations":[{"raw_affiliation_string":"Universidad Rey Juan Carlos, Spain","institution_ids":["https://openalex.org/I182083151"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077760743","display_name":"Andrea Capiluppi","orcid":"https://orcid.org/0000-0001-9469-6050"},"institutions":[{"id":"https://openalex.org/I59433898","display_name":"Brunel University of London","ror":"https://ror.org/00dn4t376","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I59433898"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Andrea Capiluppi","raw_affiliation_strings":["Brunel University, UK"],"affiliations":[{"raw_affiliation_string":"Brunel University, UK","institution_ids":["https://openalex.org/I59433898"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5047019074","display_name":"Daniel Izquierdo-Cort\u00e1zar","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Daniel Izquierdo-Cort\u00e1zar","raw_affiliation_strings":["Bitergia, Spain"],"affiliations":[{"raw_affiliation_string":"Bitergia, Spain","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5061131972"],"corresponding_institution_ids":["https://openalex.org/I182083151"],"apc_list":null,"apc_paid":null,"fwci":8.9107,"has_fulltext":false,"cited_by_count":56,"citation_normalized_percentile":{"value":0.97471022,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"222","last_page":"231"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11675","display_name":"Open Source Software Innovations","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1706","display_name":"Computer Science Applications"},"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/T11675","display_name":"Open Source Software Innovations","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1706","display_name":"Computer Science Applications"},"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/T10260","display_name":"Software Engineering Research","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T11704","display_name":"Mobile Crowdsensing and Crowdsourcing","score":0.9923999905586243,"subfield":{"id":"https://openalex.org/subfields/1706","display_name":"Computer Science Applications"},"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/computer-science","display_name":"Computer science","score":0.6437191367149353},{"id":"https://openalex.org/keywords/software","display_name":"Software","score":0.5893079042434692},{"id":"https://openalex.org/keywords/open-source","display_name":"Open source","score":0.5409058928489685},{"id":"https://openalex.org/keywords/software-development","display_name":"Software development","score":0.5387251377105713},{"id":"https://openalex.org/keywords/open-source-software","display_name":"Open source software","score":0.5297015309333801},{"id":"https://openalex.org/keywords/software-engineering","display_name":"Software engineering","score":0.5065015554428101},{"id":"https://openalex.org/keywords/source-code","display_name":"Source code","score":0.4888753294944763},{"id":"https://openalex.org/keywords/software-project-management","display_name":"Software project management","score":0.42997413873672485},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.3920881450176239},{"id":"https://openalex.org/keywords/data-science","display_name":"Data science","score":0.37871846556663513},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.37069717049598694},{"id":"https://openalex.org/keywords/software-construction","display_name":"Software construction","score":0.24874353408813477},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.1774471402168274}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6437191367149353},{"id":"https://openalex.org/C2777904410","wikidata":"https://www.wikidata.org/wiki/Q7397","display_name":"Software","level":2,"score":0.5893079042434692},{"id":"https://openalex.org/C3018397939","wikidata":"https://www.wikidata.org/wiki/Q3644502","display_name":"Open source","level":3,"score":0.5409058928489685},{"id":"https://openalex.org/C529173508","wikidata":"https://www.wikidata.org/wiki/Q638608","display_name":"Software development","level":3,"score":0.5387251377105713},{"id":"https://openalex.org/C2988343187","wikidata":"https://www.wikidata.org/wiki/Q1130645","display_name":"Open source software","level":3,"score":0.5297015309333801},{"id":"https://openalex.org/C115903868","wikidata":"https://www.wikidata.org/wiki/Q80993","display_name":"Software engineering","level":1,"score":0.5065015554428101},{"id":"https://openalex.org/C43126263","wikidata":"https://www.wikidata.org/wiki/Q128751","display_name":"Source code","level":2,"score":0.4888753294944763},{"id":"https://openalex.org/C40919944","wikidata":"https://www.wikidata.org/wiki/Q947779","display_name":"Software project management","level":5,"score":0.42997413873672485},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.3920881450176239},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.37871846556663513},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.37069717049598694},{"id":"https://openalex.org/C186846655","wikidata":"https://www.wikidata.org/wiki/Q3398377","display_name":"Software construction","level":4,"score":0.24874353408813477},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.1774471402168274}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/2597073.2597107","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2597073.2597107","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 11th Working Conference on Mining Software Repositories","raw_type":"proceedings-article"},{"id":"pmh:oai:bura.brunel.ac.uk:2438/12044","is_oa":false,"landing_page_url":"http://bura.brunel.ac.uk/handle/2438/12044","pdf_url":null,"source":{"id":"https://openalex.org/S4306401473","display_name":"Brunel University Research Archive (BURA) (Brunel University London)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I59433898","host_organization_name":"Brunel University of London","host_organization_lineage":["https://openalex.org/I59433898"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Conference Paper"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Industry, innovation and infrastructure","id":"https://metadata.un.org/sdg/9","score":0.44999998807907104}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":31,"referenced_works":["https://openalex.org/W50692281","https://openalex.org/W159542735","https://openalex.org/W372369915","https://openalex.org/W1533820539","https://openalex.org/W1564257470","https://openalex.org/W1985261208","https://openalex.org/W1985994919","https://openalex.org/W1995969252","https://openalex.org/W2005519590","https://openalex.org/W2058549730","https://openalex.org/W2073041235","https://openalex.org/W2080962405","https://openalex.org/W2083790473","https://openalex.org/W2090625011","https://openalex.org/W2093249572","https://openalex.org/W2098151264","https://openalex.org/W2107294940","https://openalex.org/W2116537371","https://openalex.org/W2120787072","https://openalex.org/W2142440840","https://openalex.org/W2151511199","https://openalex.org/W2151664739","https://openalex.org/W2162777118","https://openalex.org/W2163683660","https://openalex.org/W2164742765","https://openalex.org/W2171711001","https://openalex.org/W2399319265","https://openalex.org/W3018965553","https://openalex.org/W3124560715","https://openalex.org/W3145932680","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W4376877853","https://openalex.org/W1493891899","https://openalex.org/W4250928611","https://openalex.org/W2113128227","https://openalex.org/W2491403535","https://openalex.org/W632256878","https://openalex.org/W2104915799","https://openalex.org/W3123068371","https://openalex.org/W4211197663","https://openalex.org/W4311938462"],"abstract_inverted_index":{"Because":[0],"of":[1,7,37,45,51,102,136,144],"the":[2,15,27,46,49,87,114,128],"distributed":[3],"and":[4,111],"collaborative":[5],"nature":[6],"free":[8],"/":[9],"open":[10],"source":[11,78],"software":[12,28,138],"(FOSS)":[13],"projects,":[14],"development":[16,139],"effort":[17,73],"invested":[18],"in":[19,48,98],"a":[20,68,90,117,131],"project":[21,92],"is":[22,35],"usually":[23],"unknown,":[24],"even":[25],"after":[26],"has":[29,56],"been":[30],"released.":[31],"However,":[32],"this":[33,64],"information":[34],"becoming":[36],"major":[38],"interest,":[39],"especially":[40],"---but":[41],"not":[42],"only---":[43],"because":[44],"growth":[47],"number":[50],"companies":[52,103],"for":[53,59],"which":[54,99],"FOSS":[55,91],"become":[57],"relevant":[58],"their":[60],"business":[61],"strategy.":[62],"In":[63],"paper":[65],"we":[66,125],"present":[67],"novel":[69],"approach":[70],"to":[71,86],"estimate":[72],"by":[74,120],"considering":[75],"data":[76,107],"from":[77,108,116],"code":[79],"management":[80],"repositories.":[81],"We":[82],"apply":[83],"our":[84],"model":[85,129],"OpenStack":[88],"project,":[89],"with":[93,113,141],"more":[94,121],"than":[95,122],"1,000":[96],"authors,":[97],"several":[100],"tens":[101],"cooperate.":[104],"Based":[105],"on":[106],"its":[109],"repositories":[110],"together":[112],"input":[115],"survey":[118],"answered":[119],"100":[123],"developers,":[124],"show":[126],"that":[127],"offers":[130],"simple,":[132],"but":[133],"sound":[134],"way":[135],"obtaining":[137],"estimations":[140],"bounded":[142],"margins":[143],"error.":[145]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":5},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":8},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":7},{"year":2017,"cited_by_count":9},{"year":2016,"cited_by_count":4},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}
