{"id":"https://openalex.org/W1622681228","doi":"https://doi.org/10.1109/isit.2015.7282575","title":"When locally repairable codes meet regenerating codes &amp;#x2014; What if some helpers are unavailable","display_name":"When locally repairable codes meet regenerating codes &amp;#x2014; What if some helpers are unavailable","publication_year":2015,"publication_date":"2015-06-01","ids":{"openalex":"https://openalex.org/W1622681228","doi":"https://doi.org/10.1109/isit.2015.7282575","mag":"1622681228"},"language":"en","primary_location":{"id":"doi:10.1109/isit.2015.7282575","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isit.2015.7282575","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE International Symposium on Information Theory (ISIT)","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/A5059026382","display_name":"Imad Ahmad","orcid":"https://orcid.org/0000-0001-5590-6676"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Imad Ahmad","raw_affiliation_strings":["School of Electrical and Computer Engineering, Purdue University, USA"],"affiliations":[{"raw_affiliation_string":"School of Electrical and Computer Engineering, Purdue University, USA","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006311047","display_name":"Chih-Chun Wang","orcid":"https://orcid.org/0000-0002-1685-820X"},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Chih-Chun Wang","raw_affiliation_strings":["Purdue University System, West Lafayette, IN, US","School of Electrical and Computer Engineering, Purdue University, USA"],"affiliations":[{"raw_affiliation_string":"Purdue University System, West Lafayette, IN, US","institution_ids":["https://openalex.org/I219193219"]},{"raw_affiliation_string":"School of Electrical and Computer Engineering, Purdue University, USA","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5059026382"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.0141,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.78851791,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"849","last_page":"853"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T11181","display_name":"Advanced Data Storage Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T11478","display_name":"Caching and Content Delivery","score":0.996999979019165,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T10772","display_name":"Distributed systems and fault tolerance","score":0.9879999756813049,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/unavailability","display_name":"Unavailability","score":0.9207347631454468},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7055312395095825},{"id":"https://openalex.org/keywords/erasure-code","display_name":"Erasure code","score":0.5980031490325928},{"id":"https://openalex.org/keywords/selection","display_name":"Selection (genetic algorithm)","score":0.5216679573059082},{"id":"https://openalex.org/keywords/reduction","display_name":"Reduction (mathematics)","score":0.5142313838005066},{"id":"https://openalex.org/keywords/node","display_name":"Node (physics)","score":0.4566579759120941},{"id":"https://openalex.org/keywords/distributed-data-store","display_name":"Distributed data store","score":0.4497261047363281},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.4210342466831207},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.37943407893180847},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.25474536418914795},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.21407943964004517},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1915437877178192},{"id":"https://openalex.org/keywords/reliability-engineering","display_name":"Reliability engineering","score":0.17680951952934265},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.12910300493240356},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.12876960635185242}],"concepts":[{"id":"https://openalex.org/C2780505938","wikidata":"https://www.wikidata.org/wiki/Q17093282","display_name":"Unavailability","level":2,"score":0.9207347631454468},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7055312395095825},{"id":"https://openalex.org/C137529215","wikidata":"https://www.wikidata.org/wiki/Q5385031","display_name":"Erasure code","level":3,"score":0.5980031490325928},{"id":"https://openalex.org/C81917197","wikidata":"https://www.wikidata.org/wiki/Q628760","display_name":"Selection (genetic algorithm)","level":2,"score":0.5216679573059082},{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.5142313838005066},{"id":"https://openalex.org/C62611344","wikidata":"https://www.wikidata.org/wiki/Q1062658","display_name":"Node (physics)","level":2,"score":0.4566579759120941},{"id":"https://openalex.org/C24885549","wikidata":"https://www.wikidata.org/wiki/Q339678","display_name":"Distributed data store","level":2,"score":0.4497261047363281},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.4210342466831207},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.37943407893180847},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.25474536418914795},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.21407943964004517},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1915437877178192},{"id":"https://openalex.org/C200601418","wikidata":"https://www.wikidata.org/wiki/Q2193887","display_name":"Reliability engineering","level":1,"score":0.17680951952934265},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.12910300493240356},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.12876960635185242},{"id":"https://openalex.org/C66938386","wikidata":"https://www.wikidata.org/wiki/Q633538","display_name":"Structural engineering","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/isit.2015.7282575","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isit.2015.7282575","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE International Symposium on Information Theory (ISIT)","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":14,"referenced_works":["https://openalex.org/W1989092389","https://openalex.org/W1993830711","https://openalex.org/W1995147907","https://openalex.org/W2014149071","https://openalex.org/W2046877816","https://openalex.org/W2050500290","https://openalex.org/W2080339104","https://openalex.org/W2096630424","https://openalex.org/W2105185344","https://openalex.org/W2120770247","https://openalex.org/W2156345730","https://openalex.org/W2170681444","https://openalex.org/W3100282565","https://openalex.org/W3101113681"],"related_works":["https://openalex.org/W2963163039","https://openalex.org/W2807749388","https://openalex.org/W2623177195","https://openalex.org/W2095952791","https://openalex.org/W1667838839","https://openalex.org/W2532270758","https://openalex.org/W4294555231","https://openalex.org/W2086474248","https://openalex.org/W2795779202","https://openalex.org/W4310580094"],"abstract_inverted_index":{"Locally":[0],"rapairable":[1],"codes":[2,9,51,83,109],"(LRCs)":[3],"are":[4,208],"ingeniously":[5],"designed":[6],"distributed":[7],"storage":[8],"with":[10,53,168,192,221],"a":[11,45,54,222],"(usually":[12],"small)":[13],"bounded":[14],"number":[15],"of":[16,33,47,58,70,92,154,166,177,198,241,255],"helper":[17,146,179,199,224,229,243,256],"nodes":[18,147],"participating":[19],"in":[20,79,188,204],"repair.":[21,60,123],"Since":[22],"most":[23],"existing":[24,96,196],"LRCs":[25,139],"assume":[26],"exact":[27],"repair":[28,72,135],"and":[29,73,102,121,140,206,246],"allow":[30],"full":[31],"exchange":[32],"the":[34,48,68,80,87,152,164,175,185,189,239,248,262],"stored":[35],"data":[36],"(\u03b2":[37,76],"=":[38],"\u03b1),":[39],"they":[40,66],"can":[41],"be":[42,149],"viewed":[43],"as":[44],"generalization":[46],"traditional":[49],"erasure":[50],"(ECs)":[52],"much":[55],"desired":[56],"feature":[57],"local":[59,117,134],"However,":[61],"it":[62,215],"also":[63,237],"means":[64],"that":[65,111,143,191],"lack":[67],"features":[69],"functional":[71,122],"partial":[74,119],"information-exchange":[75],"<":[77],"\u03b1)":[78],"original":[81],"regenerating":[82,108],"(RCs).":[84],"Motivated":[85],"by":[86,98,103],"significant":[88],"bandwidth":[89],"(BW)":[90],"reduction":[91,126],"RCs":[93,205],"over":[94],"ECs,":[95],"works":[97],"Ahmad":[99],"et":[100],"al":[101],"Hollmann":[104],"studied":[105],"\u201clocally":[106],"repairable":[107],"(LRRCs)\u201d":[110],"simultaneously":[112],"admit":[113],"all":[114,195],"three":[115],"features:":[116],"repair,":[118],"information-exchange,":[120],"Significant":[124],"BW":[125],"was":[127],"observed.":[128],"One":[129],"important":[130],"issue":[131],"for":[132,184,264],"any":[133],"schemes":[136],"(including":[137],"both":[138],"LRRCs)":[141],"is":[142,216,258],"sometimes":[144],"designated":[145],"may":[148],"temporarily":[150],"unavailable,":[151],"result":[153],"multiple":[155],"failures,":[156],"degraded":[157],"reads,":[158],"or":[159],"other":[160],"network":[161],"dynamics.":[162],"Under":[163],"setting":[165],"LRRCs":[167,220],"temporary":[169],"node":[170,193],"unavailability,":[171,194],"this":[172],"work":[173,236],"studies":[174],"impact":[176],"different":[178,242,266],"selection":[180,225,244,257],"methods.":[181],"It":[182],"proves,":[183],"first":[186],"time":[187],"literature,":[190],"methods":[197,245],"selection,":[200,230],"including":[201],"those":[202],"used":[203],"LRCs,":[207],"strictly":[209],"repair-BW":[210],"suboptimal.":[211],"For":[212],"some":[213],"scenarios,":[214],"necessary":[217],"to":[218,231],"combine":[219],"new":[223],"method,":[226],"termed":[227],"dynamic":[228],"achieve":[232],"optimal":[233],"BW.":[234],"This":[235],"compares":[238],"performance":[240],"answers":[247],"following":[249],"fundamental":[250],"question:":[251],"whether":[252],"one":[253],"method":[254],"intrinsically":[259],"better":[260],"than":[261],"other?":[263],"various":[265],"scenarios.":[267]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
