{"id":"https://openalex.org/W2966481281","doi":"https://doi.org/10.24963/ijcai.2019/170","title":"Conditions for Avoiding Node Re-expansions in Bounded Suboptimal Search","display_name":"Conditions for Avoiding Node Re-expansions in Bounded Suboptimal Search","publication_year":2019,"publication_date":"2019-07-28","ids":{"openalex":"https://openalex.org/W2966481281","doi":"https://doi.org/10.24963/ijcai.2019/170","mag":"2966481281"},"language":"en","primary_location":{"id":"doi:10.24963/ijcai.2019/170","is_oa":true,"landing_page_url":"https://doi.org/10.24963/ijcai.2019/170","pdf_url":"https://www.ijcai.org/proceedings/2019/0170.pdf","source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.ijcai.org/proceedings/2019/0170.pdf","any_repository_has_fulltext":null},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100614650","display_name":"Jingwei Chen","orcid":"https://orcid.org/0000-0002-9868-8936"},"institutions":[{"id":"https://openalex.org/I154425047","display_name":"University of Alberta","ror":"https://ror.org/0160cpw27","country_code":"CA","type":"education","lineage":["https://openalex.org/I154425047"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Jingwei Chen","raw_affiliation_strings":["Department of Computing Science, University of Alberta, Edmonton, AB Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computing Science, University of Alberta, Edmonton, AB Canada","institution_ids":["https://openalex.org/I154425047"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041415709","display_name":"Nathan Sturtevant","orcid":"https://orcid.org/0000-0003-4318-2791"},"institutions":[{"id":"https://openalex.org/I154425047","display_name":"University of Alberta","ror":"https://ror.org/0160cpw27","country_code":"CA","type":"education","lineage":["https://openalex.org/I154425047"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Nathan R. Sturtevant","raw_affiliation_strings":["Department of Computing Science, University of Alberta, Edmonton, AB Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computing Science, University of Alberta, Edmonton, AB Canada","institution_ids":["https://openalex.org/I154425047"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I154425047"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1220","last_page":"1226"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10100","display_name":"Metaheuristic Optimization Algorithms Research","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10100","display_name":"Metaheuristic Optimization Algorithms Research","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10586","display_name":"Robotic Path Planning Algorithms","score":0.9986000061035156,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T12288","display_name":"Optimization and Search Problems","score":0.9961000084877014,"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/bounded-function","display_name":"Bounded function","score":0.8588202595710754},{"id":"https://openalex.org/keywords/node","display_name":"Node (physics)","score":0.7659045457839966},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.662397563457489},{"id":"https://openalex.org/keywords/constant","display_name":"Constant (computer programming)","score":0.5702598094940186},{"id":"https://openalex.org/keywords/quality","display_name":"Quality (philosophy)","score":0.5597575306892395},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.5367693901062012},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5191189646720886},{"id":"https://openalex.org/keywords/upper-and-lower-bounds","display_name":"Upper and lower bounds","score":0.4681461453437805},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.4027272164821625},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.04719465970993042}],"concepts":[{"id":"https://openalex.org/C34388435","wikidata":"https://www.wikidata.org/wiki/Q2267362","display_name":"Bounded function","level":2,"score":0.8588202595710754},{"id":"https://openalex.org/C62611344","wikidata":"https://www.wikidata.org/wiki/Q1062658","display_name":"Node (physics)","level":2,"score":0.7659045457839966},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.662397563457489},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.5702598094940186},{"id":"https://openalex.org/C2779530757","wikidata":"https://www.wikidata.org/wiki/Q1207505","display_name":"Quality (philosophy)","level":2,"score":0.5597575306892395},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.5367693901062012},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5191189646720886},{"id":"https://openalex.org/C77553402","wikidata":"https://www.wikidata.org/wiki/Q13222579","display_name":"Upper and lower bounds","level":2,"score":0.4681461453437805},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4027272164821625},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.04719465970993042},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"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/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C66938386","wikidata":"https://www.wikidata.org/wiki/Q633538","display_name":"Structural engineering","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.24963/ijcai.2019/170","is_oa":true,"landing_page_url":"https://doi.org/10.24963/ijcai.2019/170","pdf_url":"https://www.ijcai.org/proceedings/2019/0170.pdf","source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence","raw_type":"proceedings-article"}],"best_oa_location":{"id":"doi:10.24963/ijcai.2019/170","is_oa":true,"landing_page_url":"https://doi.org/10.24963/ijcai.2019/170","pdf_url":"https://www.ijcai.org/proceedings/2019/0170.pdf","source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence","raw_type":"proceedings-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2966481281.pdf","grobid_xml":"https://content.openalex.org/works/W2966481281.grobid-xml"},"referenced_works_count":15,"referenced_works":["https://openalex.org/W66985115","https://openalex.org/W122154553","https://openalex.org/W187834424","https://openalex.org/W1487826456","https://openalex.org/W2035601288","https://openalex.org/W2042872950","https://openalex.org/W2114678164","https://openalex.org/W2135125135","https://openalex.org/W2161076907","https://openalex.org/W2162313101","https://openalex.org/W2293478223","https://openalex.org/W2529475626","https://openalex.org/W2577858298","https://openalex.org/W2965387939","https://openalex.org/W4248795023"],"related_works":["https://openalex.org/W3013085049","https://openalex.org/W1560496689","https://openalex.org/W1992739770","https://openalex.org/W4386900933","https://openalex.org/W4229058035","https://openalex.org/W3125672081","https://openalex.org/W2296389180","https://openalex.org/W2158905189","https://openalex.org/W4319874546","https://openalex.org/W3046727562"],"abstract_inverted_index":{"Many":[0],"practical":[1],"problems":[2],"are":[3,93,100],"too":[4],"difficult":[5],"to":[6,12,38],"solve":[7],"optimally,":[8],"motivating":[9],"the":[10,21,52,57,75],"need":[11],"found":[13],"suboptimal":[14,40,84],"solutions,":[15],"particularly":[16],"those":[17],"with":[18,42,56],"bounds":[19,92],"on":[20],"final":[22],"solution":[23,43,85],"quality.":[24],"Algorithms":[25],"like":[26],"Weighted":[27],"A*,":[28,61],"A*-epsilon,":[29],"Optimistic":[30],"Search,":[31],"EES,":[32],"and":[33],"DPS":[34],"have":[35],"been":[36],"developed":[37,101],"find":[39,82],"solutions":[41],"quality":[44],"that":[45,80,102],"is":[46],"within":[47],"a":[48],"constant":[49],"bound":[50],"of":[51,59,63,77],"optimal":[53],"solution.":[54],"However,":[55],"exception":[58],"weighted":[60,105],"all":[62],"these":[64],"algorithms":[65],"require":[66],"performing":[67],"node":[68,88],"re-expansions":[69],"during":[70],"search.":[71],"This":[72],"paper":[73],"explores":[74],"properties":[76],"priority":[78,98],"functions":[79,99],"can":[81,103],"bounded":[83],"without":[86],"requiring":[87],"re-expansions.":[89],"After":[90],"general":[91],"developed,":[94],"two":[95],"new":[96],"convex":[97],"outperform":[104],"A*.":[106]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":7},{"year":2020,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}