{"id":"https://openalex.org/W2055835198","doi":"https://doi.org/10.1145/2020390.2020403","title":"Empirical validation of human factors in predicting issue lead time in open source projects","display_name":"Empirical validation of human factors in predicting issue lead time in open source projects","publication_year":2011,"publication_date":"2011-09-20","ids":{"openalex":"https://openalex.org/W2055835198","doi":"https://doi.org/10.1145/2020390.2020403","mag":"2055835198"},"language":"en","primary_location":{"id":"doi:10.1145/2020390.2020403","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2020390.2020403","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 7th International Conference on Predictive Models in Software Engineering","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":null,"display_name":"Nguyen Duc Anh","orcid":null},"institutions":[{"id":"https://openalex.org/I204778367","display_name":"Norwegian University of Science and Technology","ror":"https://ror.org/05xg72x27","country_code":"NO","type":"education","lineage":["https://openalex.org/I204778367"]}],"countries":["NO"],"is_corresponding":true,"raw_author_name":"Nguyen Duc Anh","raw_affiliation_strings":["IDI-NTNU Trondheim, Norway","IDI, NTNU, Trondheim, Norway#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IDI-NTNU Trondheim, Norway","institution_ids":[]},{"raw_affiliation_string":"IDI, NTNU, Trondheim, Norway#TAB#","institution_ids":["https://openalex.org/I204778367"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5105788954","display_name":"Daniela Soares Cruzes","orcid":null},"institutions":[{"id":"https://openalex.org/I204778367","display_name":"Norwegian University of Science and Technology","ror":"https://ror.org/05xg72x27","country_code":"NO","type":"education","lineage":["https://openalex.org/I204778367"]}],"countries":["NO"],"is_corresponding":false,"raw_author_name":"Daniela S. Cruzes","raw_affiliation_strings":["IDI-NTNU Trondheim, Norway","IDI, NTNU, Trondheim, Norway#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IDI-NTNU Trondheim, Norway","institution_ids":[]},{"raw_affiliation_string":"IDI, NTNU, Trondheim, Norway#TAB#","institution_ids":["https://openalex.org/I204778367"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113635360","display_name":"Reidar Conradi","orcid":null},"institutions":[{"id":"https://openalex.org/I204778367","display_name":"Norwegian University of Science and Technology","ror":"https://ror.org/05xg72x27","country_code":"NO","type":"education","lineage":["https://openalex.org/I204778367"]}],"countries":["NO"],"is_corresponding":false,"raw_author_name":"Reidar Conradi","raw_affiliation_strings":["IDI-NTNU Trondheim, Norway","IDI, NTNU, Trondheim, Norway#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IDI-NTNU Trondheim, Norway","institution_ids":[]},{"raw_affiliation_string":"IDI, NTNU, Trondheim, Norway#TAB#","institution_ids":["https://openalex.org/I204778367"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5076035932","display_name":"Claudia Ayala","orcid":"https://orcid.org/0000-0002-6262-3698"},"institutions":[{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Claudia Ayala","raw_affiliation_strings":["Technical University of Catalunya, Barcelona, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Technical University of Catalunya, Barcelona, Spain","institution_ids":["https://openalex.org/I9617848"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I204778367"],"apc_list":null,"apc_paid":null,"fwci":0.7639,"has_fulltext":false,"cited_by_count":18,"citation_normalized_percentile":{"value":0.83168375,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"10"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10260","display_name":"Software Engineering Research","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T10260","display_name":"Software Engineering Research","score":0.9998999834060669,"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/T11675","display_name":"Open Source Software Innovations","score":0.9994000196456909,"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/T10430","display_name":"Software Engineering Techniques and Practices","score":0.9991999864578247,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/open-source","display_name":"Open source","score":0.7434593439102173},{"id":"https://openalex.org/keywords/lead","display_name":"Lead (geology)","score":0.7368407249450684},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.553806722164154},{"id":"https://openalex.org/keywords/empirical-research","display_name":"Empirical research","score":0.4824257791042328},{"id":"https://openalex.org/keywords/data-science","display_name":"Data science","score":0.40100041031837463},{"id":"https://openalex.org/keywords/risk-analysis","display_name":"Risk analysis (engineering)","score":0.3837495446205139},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.16657701134681702},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.11140930652618408},{"id":"https://openalex.org/keywords/software","display_name":"Software","score":0.08759894967079163},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.07552781701087952},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.05863100290298462}],"concepts":[{"id":"https://openalex.org/C3018397939","wikidata":"https://www.wikidata.org/wiki/Q3644502","display_name":"Open source","level":3,"score":0.7434593439102173},{"id":"https://openalex.org/C2777093003","wikidata":"https://www.wikidata.org/wiki/Q6508345","display_name":"Lead (geology)","level":2,"score":0.7368407249450684},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.553806722164154},{"id":"https://openalex.org/C120936955","wikidata":"https://www.wikidata.org/wiki/Q2155640","display_name":"Empirical research","level":2,"score":0.4824257791042328},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.40100041031837463},{"id":"https://openalex.org/C112930515","wikidata":"https://www.wikidata.org/wiki/Q4389547","display_name":"Risk analysis (engineering)","level":1,"score":0.3837495446205139},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.16657701134681702},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.11140930652618408},{"id":"https://openalex.org/C2777904410","wikidata":"https://www.wikidata.org/wiki/Q7397","display_name":"Software","level":2,"score":0.08759894967079163},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.07552781701087952},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.05863100290298462},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C114793014","wikidata":"https://www.wikidata.org/wiki/Q52109","display_name":"Geomorphology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2020390.2020403","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2020390.2020403","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 7th International Conference on Predictive Models in Software Engineering","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Partnerships for the goals","id":"https://metadata.un.org/sdg/17","score":0.5099999904632568}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":32,"referenced_works":["https://openalex.org/W195353953","https://openalex.org/W1555912304","https://openalex.org/W1968652658","https://openalex.org/W1984271155","https://openalex.org/W1988510359","https://openalex.org/W2000480518","https://openalex.org/W2018871545","https://openalex.org/W2022585969","https://openalex.org/W2048997388","https://openalex.org/W2058698726","https://openalex.org/W2062086609","https://openalex.org/W2102193394","https://openalex.org/W2105776892","https://openalex.org/W2106723970","https://openalex.org/W2107672258","https://openalex.org/W2110229593","https://openalex.org/W2110431240","https://openalex.org/W2119731669","https://openalex.org/W2127577307","https://openalex.org/W2150361830","https://openalex.org/W2151664739","https://openalex.org/W2160517961","https://openalex.org/W2170655593","https://openalex.org/W2783791045","https://openalex.org/W2887793215","https://openalex.org/W3121143339","https://openalex.org/W4206495155","https://openalex.org/W4229842515","https://openalex.org/W4249553193","https://openalex.org/W6646231803","https://openalex.org/W6675086181","https://openalex.org/W6838085293"],"related_works":["https://openalex.org/W4255463199","https://openalex.org/W2411039299","https://openalex.org/W1856410221","https://openalex.org/W2318949977","https://openalex.org/W2334139353","https://openalex.org/W4281691423","https://openalex.org/W4243014959","https://openalex.org/W4243994159","https://openalex.org/W4254613272","https://openalex.org/W2374523667"],"abstract_inverted_index":{"[Context]":[0],"Software":[1],"developers":[2],"often":[3],"spend":[4],"a":[5,46],"significant":[6],"portion":[7],"of":[8,19,40,64,85,107,121,136,143,147,154,163,174,189],"their":[9],"resources":[10,32],"resolving":[11],"submitted":[12],"evolution":[13,27],"issue":[14,20,41,65,76,164,179,190],"reports.":[15],"Classification":[16],"or":[17],"prediction":[18,68,150,187,202],"lead":[21,42,66,165,180,191],"time":[22,43,67,181],"is":[23,44],"useful":[24],"for":[25,51],"prioritizing":[26],"issues":[28],"and":[29,96,99,145,176],"supporting":[30],"human":[31,71],"allocation":[33],"in":[34,110,149,185],"software":[35],"maintenance.":[36],"However,":[37,193],"the":[38,134,141,172],"predictability":[39],"still":[45],"research":[47],"gap":[48],"that":[49,171],"calls":[50],"more":[52,194],"empirical":[53,83],"investigation.":[54],"[Aim]":[55],"In":[56],"this":[57],"paper,":[58],"we":[59],"empirically":[60],"assess":[61],"different":[62],"types":[63],"models":[69,109,125,188],"using":[70],"factor":[72],"measures":[73,153],"collected":[74],"from":[75,114,127],"tracking":[77],"systems.":[78],"[Method]":[79],"We":[80],"conduct":[81],"an":[82,160],"investigation":[84],"three":[86],"active":[87],"open":[88],"source":[89],"projects.":[90],"A":[91],"machine":[92],"learning":[93],"based":[94],"classification":[95,108],"statistical":[97],"univariate":[98],"multivariate":[100,123],"analyses":[101],"are":[102,158,182],"performed.":[103],"[Results]":[104],"The":[105,118,152,168],"accuracy":[106],"ten-fold":[111],"cross-validation":[112],"varies":[113],"75.56%":[115],"to":[116,129,199],"91%.":[117],"R2":[119],"value":[120],"linear":[122],"regression":[124],"ranges":[126],"0.29":[128],"0.60.":[130],"Correlation":[131],"analysis":[132],"confirms":[133],"effectiveness":[135],"collaboration":[137],"measures,":[138],"such":[139],"as":[140],"number":[142,146,173],"stakeholders":[144,175],"comments,":[148],"models.":[151],"assignee":[155],"past":[156,178],"performance":[157],"also":[159],"effective":[161],"indicator":[162],"time.":[166,192],"[Conclusions]":[167],"results":[169],"indicate":[170],"average":[177],"important":[183],"variables":[184,195],"constructing":[186],"should":[196],"be":[197],"explored":[198],"achieve":[200],"better":[201],"performance.":[203]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":3},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":4},{"year":2015,"cited_by_count":2},{"year":2013,"cited_by_count":1}],"updated_date":"2026-05-03T08:25:01.440150","created_date":"2025-10-10T00:00:00"}