{"id":"https://openalex.org/W2035353258","doi":"https://doi.org/10.1109/tcad.2015.2394432","title":"Region-Based and Panel-Based Algorithms for Unroutable Placement Recognition","display_name":"Region-Based and Panel-Based Algorithms for Unroutable Placement Recognition","publication_year":2015,"publication_date":"2015-02-02","ids":{"openalex":"https://openalex.org/W2035353258","doi":"https://doi.org/10.1109/tcad.2015.2394432","mag":"2035353258"},"language":"en","primary_location":{"id":"doi:10.1109/tcad.2015.2394432","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcad.2015.2394432","pdf_url":null,"source":{"id":"https://openalex.org/S100835903","display_name":"IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems","issn_l":"0278-0070","issn":["0278-0070","1937-4151"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems","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/A5100429106","display_name":"Wenhao Liu","orcid":"https://orcid.org/0000-0001-9757-1077"},"institutions":[{"id":"https://openalex.org/I66217453","display_name":"Cadence Design Systems (United States)","ror":"https://ror.org/04w8xa018","country_code":"US","type":"company","lineage":["https://openalex.org/I66217453"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Wen-Hao Liu","raw_affiliation_strings":["Block Implementation Group, Cadence Design Systems, Austin, TX, USA"],"affiliations":[{"raw_affiliation_string":"Block Implementation Group, Cadence Design Systems, Austin, TX, USA","institution_ids":["https://openalex.org/I66217453"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5054875448","display_name":"Tzu-Kai Chien","orcid":null},"institutions":[{"id":"https://openalex.org/I25846049","display_name":"National Tsing Hua University","ror":"https://ror.org/00zdnkx70","country_code":"TW","type":"education","lineage":["https://openalex.org/I25846049"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Tzu-Kai Chien","raw_affiliation_strings":["Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan","Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan","institution_ids":["https://openalex.org/I25846049"]},{"raw_affiliation_string":"Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan#TAB#","institution_ids":["https://openalex.org/I25846049"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5073705099","display_name":"Ting-Chi Wang","orcid":"https://orcid.org/0000-0002-3435-0418"},"institutions":[{"id":"https://openalex.org/I25846049","display_name":"National Tsing Hua University","ror":"https://ror.org/00zdnkx70","country_code":"TW","type":"education","lineage":["https://openalex.org/I25846049"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Ting-Chi Wang","raw_affiliation_strings":["Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan","Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan","institution_ids":["https://openalex.org/I25846049"]},{"raw_affiliation_string":"Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan#TAB#","institution_ids":["https://openalex.org/I25846049"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5100429106"],"corresponding_institution_ids":["https://openalex.org/I66217453"],"apc_list":null,"apc_paid":null,"fwci":0.5919,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.72110383,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"34","issue":"4","first_page":"502","last_page":"514"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11522","display_name":"VLSI and FPGA Design Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11522","display_name":"VLSI and FPGA Design Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11032","display_name":"VLSI and Analog Circuit Testing","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/1708","display_name":"Hardware and Architecture"},"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/T11338","display_name":"Advancements in Photolithography Techniques","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/router","display_name":"Router","score":0.8113967180252075},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7369917631149292},{"id":"https://openalex.org/keywords/routing","display_name":"Routing (electronic design automation)","score":0.589519739151001},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5507010221481323},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.5085839033126831},{"id":"https://openalex.org/keywords/constraint","display_name":"Constraint (computer-aided design)","score":0.47134658694267273},{"id":"https://openalex.org/keywords/placement","display_name":"Placement","score":0.4201076626777649},{"id":"https://openalex.org/keywords/embedded-system","display_name":"Embedded system","score":0.1639031171798706},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11557018756866455},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.10560324788093567},{"id":"https://openalex.org/keywords/circuit-design","display_name":"Circuit design","score":0.07050636410713196},{"id":"https://openalex.org/keywords/physical-design","display_name":"Physical design","score":0.06283217668533325},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.06279373168945312}],"concepts":[{"id":"https://openalex.org/C2775896111","wikidata":"https://www.wikidata.org/wiki/Q642560","display_name":"Router","level":2,"score":0.8113967180252075},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7369917631149292},{"id":"https://openalex.org/C74172769","wikidata":"https://www.wikidata.org/wiki/Q1446839","display_name":"Routing (electronic design automation)","level":2,"score":0.589519739151001},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5507010221481323},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5085839033126831},{"id":"https://openalex.org/C2776036281","wikidata":"https://www.wikidata.org/wiki/Q48769818","display_name":"Constraint (computer-aided design)","level":2,"score":0.47134658694267273},{"id":"https://openalex.org/C117690923","wikidata":"https://www.wikidata.org/wiki/Q1484784","display_name":"Placement","level":4,"score":0.4201076626777649},{"id":"https://openalex.org/C149635348","wikidata":"https://www.wikidata.org/wiki/Q193040","display_name":"Embedded system","level":1,"score":0.1639031171798706},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11557018756866455},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.10560324788093567},{"id":"https://openalex.org/C190560348","wikidata":"https://www.wikidata.org/wiki/Q3245116","display_name":"Circuit design","level":2,"score":0.07050636410713196},{"id":"https://openalex.org/C188817802","wikidata":"https://www.wikidata.org/wiki/Q13426855","display_name":"Physical design","level":3,"score":0.06283217668533325},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.06279373168945312},{"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/tcad.2015.2394432","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcad.2015.2394432","pdf_url":null,"source":{"id":"https://openalex.org/S100835903","display_name":"IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems","issn_l":"0278-0070","issn":["0278-0070","1937-4151"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1468047678","display_name":null,"funder_award_id":"MOST 103-2220-E-007-001","funder_id":"https://openalex.org/F4320322795","funder_display_name":"Ministry of Science and Technology, Taiwan"}],"funders":[{"id":"https://openalex.org/F4320322795","display_name":"Ministry of Science and Technology, Taiwan","ror":"https://ror.org/02kv4zf79"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":37,"referenced_works":["https://openalex.org/W1969859981","https://openalex.org/W1971840653","https://openalex.org/W1977024562","https://openalex.org/W1982795686","https://openalex.org/W1982924274","https://openalex.org/W1985282266","https://openalex.org/W2011039300","https://openalex.org/W2011912079","https://openalex.org/W2020935379","https://openalex.org/W2032264883","https://openalex.org/W2040311870","https://openalex.org/W2043643711","https://openalex.org/W2051611158","https://openalex.org/W2053902150","https://openalex.org/W2057469119","https://openalex.org/W2058691644","https://openalex.org/W2072175262","https://openalex.org/W2085456403","https://openalex.org/W2098920195","https://openalex.org/W2109409030","https://openalex.org/W2133560740","https://openalex.org/W2154013992","https://openalex.org/W2167730834","https://openalex.org/W2168611993","https://openalex.org/W3140873734","https://openalex.org/W3141126213","https://openalex.org/W3145272032","https://openalex.org/W3145770066","https://openalex.org/W3148798416","https://openalex.org/W3148937850","https://openalex.org/W3151873990","https://openalex.org/W3152105119","https://openalex.org/W4245571887","https://openalex.org/W4247156909","https://openalex.org/W4252470809","https://openalex.org/W4254855014","https://openalex.org/W6684428986"],"related_works":["https://openalex.org/W2156550631","https://openalex.org/W2354672211","https://openalex.org/W2001838379","https://openalex.org/W4211105560","https://openalex.org/W2013661779","https://openalex.org/W2041205424","https://openalex.org/W2020558110","https://openalex.org/W2111591643","https://openalex.org/W4318224792","https://openalex.org/W2132958139"],"abstract_inverted_index":{"To":[0],"avoid":[1],"producing":[2],"unroutable":[3,47,55,62,69,82,118,130],"placement":[4,17,32,44,56,93],"solutions,":[5,18],"many":[6],"state-of-the-art":[7],"routability-driven":[8],"placers":[9],"iteratively":[10],"invoke":[11],"global":[12,27,136],"routers":[13],"to":[14,29,48,96],"evaluate":[15,30],"their":[16],"and":[19,38,66],"then":[20],"perform":[21],"routability":[22],"optimization.":[23],"However,":[24],"using":[25],"a":[26,43,60,67,84,92,103,141,152],"router":[28],"hard-to-route":[31,87,135],"solutions":[33],"may":[34],"spend":[35],"considerable":[36],"runtime":[37],"it":[39],"cannot":[40],"guarantee":[41],"that":[42,79,116,127,156],"is":[45,94,144],"truly":[46],"any":[49],"router.":[50],"This":[51],"paper":[52],"presents":[53],"an":[54],"recognizer":[57,100],"based":[58],"on":[59],"window-based":[61],"region":[63,119],"recognition":[64,71,120],"algorithm":[65,121,148],"length-bounded":[68],"panel":[70],"(UPR)":[72],"algorithm,":[73],"which":[74],"can":[75,101,122,149],"confirm":[76],"some":[77],"placements":[78,126,155],"are":[80,128,157],"exactly":[81],"among":[83,131],"set":[85],"of":[86,106],"placements.":[88],"In":[89],"addition,":[90],"if":[91],"recognized":[95],"be":[97],"unroutable,":[98],"the":[99,110,117,146],"report":[102],"lower":[104],"bound":[105],"total":[107],"overflow":[108],"for":[109],"placement.":[111],"The":[112],"experimental":[113],"results":[114],"reveal":[115],"find":[123,150],"out":[124,151],"16":[125],"definitely":[129],"23":[132],"widely":[133],"used":[134],"routing":[137],"benchmarks.":[138],"Moreover,":[139],"when":[140],"scenic":[142],"constraint":[143],"considered,":[145],"UPR":[147],"few":[153],"more":[154],"also":[158],"unroutable.":[159]},"counts_by_year":[{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}