{"id":"https://openalex.org/W7154141256","doi":"https://doi.org/10.1145/3803015","title":"Towards Efficient Symmetric Sparse Matrix-Vector Multiplication on Multi-Cores","display_name":"Towards Efficient Symmetric Sparse Matrix-Vector Multiplication on Multi-Cores","publication_year":2026,"publication_date":"2026-04-13","ids":{"openalex":"https://openalex.org/W7154141256","doi":"https://doi.org/10.1145/3803015"},"language":"en","primary_location":{"id":"doi:10.1145/3803015","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3803015","pdf_url":null,"source":{"id":"https://openalex.org/S26056741","display_name":"ACM Transactions on Architecture and Code Optimization","issn_l":"1544-3566","issn":["1544-3566","1544-3973"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Architecture and Code Optimization","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://doi.org/10.1145/3803015","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5036679136","display_name":"Haozhong Qiu","orcid":"https://orcid.org/0009-0009-0434-8075"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Haozhong Qiu","raw_affiliation_strings":["National University of Defense Technology College of Computer Science and Technology"],"raw_orcid":"https://orcid.org/0009-0009-0434-8075","affiliations":[{"raw_affiliation_string":"National University of Defense Technology College of Computer Science and Technology","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5122922443","display_name":"Chuanfu Xu","orcid":null},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chuanfu Xu","raw_affiliation_strings":["College of Computer Science and Technology, Laboratory of Digitizing Software for Frontier Equipment, National University of Defense Technology"],"raw_orcid":"https://orcid.org/0000-0002-4876-2368","affiliations":[{"raw_affiliation_string":"College of Computer Science and Technology, Laboratory of Digitizing Software for Frontier Equipment, National University of Defense Technology","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048563462","display_name":"Qingsong Wang","orcid":"https://orcid.org/0009-0004-8323-8440"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qingsong Wang","raw_affiliation_strings":["National University of Defense Technology College of Computer Science and Technology"],"raw_orcid":"https://orcid.org/0009-0004-8323-8440","affiliations":[{"raw_affiliation_string":"National University of Defense Technology College of Computer Science and Technology","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083171604","display_name":"Jianbin Fang","orcid":"https://orcid.org/0000-0003-3542-4869"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jianbin Fang","raw_affiliation_strings":["National University of Defense Technology"],"raw_orcid":"https://orcid.org/0000-0003-3542-4869","affiliations":[{"raw_affiliation_string":"National University of Defense Technology","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100651437","display_name":"Jian Zhang","orcid":"https://orcid.org/0000-0002-7676-7609"},"institutions":[{"id":"https://openalex.org/I2802505932","display_name":"China Aerodynamics Research and Development Center","ror":"https://ror.org/00jma8s40","country_code":"CN","type":"facility","lineage":["https://openalex.org/I2802505932"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jian Zhang","raw_affiliation_strings":["China Aerodynamics Research and Development Center"],"raw_orcid":"https://orcid.org/0000-0002-7676-7609","affiliations":[{"raw_affiliation_string":"China Aerodynamics Research and Development Center","institution_ids":["https://openalex.org/I2802505932"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023992845","display_name":"Liang Deng","orcid":"https://orcid.org/0000-0003-1444-4588"},"institutions":[{"id":"https://openalex.org/I2802505932","display_name":"China Aerodynamics Research and Development Center","ror":"https://ror.org/00jma8s40","country_code":"CN","type":"facility","lineage":["https://openalex.org/I2802505932"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Liang Deng","raw_affiliation_strings":["China Aerodynamics Research and Development Center"],"raw_orcid":"https://orcid.org/0000-0003-1444-4588","affiliations":[{"raw_affiliation_string":"China Aerodynamics Research and Development Center","institution_ids":["https://openalex.org/I2802505932"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101827333","display_name":"Yue Ding","orcid":"https://orcid.org/0009-0009-1025-5238"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yue Ding","raw_affiliation_strings":["National University of Defense Technology"],"raw_orcid":"https://orcid.org/0009-0009-1025-5238","affiliations":[{"raw_affiliation_string":"National University of Defense Technology","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101361226","display_name":"Yue Wang","orcid":"https://orcid.org/0009-0007-7571-7048"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yue Wang","raw_affiliation_strings":["National University of Defense Technology"],"raw_orcid":"https://orcid.org/0009-0007-7571-7048","affiliations":[{"raw_affiliation_string":"National University of Defense Technology","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5133491930","display_name":"Zhimeng Han","orcid":"https://orcid.org/0009-0003-9522-601X"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhimeng Han","raw_affiliation_strings":["National University of Defense Technology"],"raw_orcid":"https://orcid.org/0009-0003-9522-601X","affiliations":[{"raw_affiliation_string":"National University of Defense Technology","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5008369819","display_name":"Yonggang Che","orcid":"https://orcid.org/0000-0001-6906-4940"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yonggang Che","raw_affiliation_strings":["College of Computer Science and Technology, Laboratory of Digitizing Software for Frontier Equipment, National University of Defense Technology"],"raw_orcid":"https://orcid.org/0000-0001-6906-4940","affiliations":[{"raw_affiliation_string":"College of Computer Science and Technology, Laboratory of Digitizing Software for Frontier Equipment, National University of Defense Technology","institution_ids":["https://openalex.org/I170215575"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.46871463,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"23","issue":"2","first_page":"1","last_page":"26"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10054","display_name":"Parallel Computing and Optimization Techniques","score":0.8253999948501587,"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"}},"topics":[{"id":"https://openalex.org/T10054","display_name":"Parallel Computing and Optimization Techniques","score":0.8253999948501587,"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/T10829","display_name":"Interconnection Networks and Systems","score":0.03750000149011612,"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/T12292","display_name":"Graph Theory and Algorithms","score":0.02969999983906746,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/matrix-multiplication","display_name":"Matrix multiplication","score":0.5455999970436096},{"id":"https://openalex.org/keywords/sparse-matrix","display_name":"Sparse matrix","score":0.5235999822616577},{"id":"https://openalex.org/keywords/multiplication","display_name":"Multiplication (music)","score":0.5081999897956848},{"id":"https://openalex.org/keywords/heuristic","display_name":"Heuristic","score":0.4936999976634979},{"id":"https://openalex.org/keywords/row","display_name":"Row","score":0.47130000591278076},{"id":"https://openalex.org/keywords/x86","display_name":"x86","score":0.4512999951839447},{"id":"https://openalex.org/keywords/matrix","display_name":"Matrix (chemical analysis)","score":0.4230000078678131},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.41110000014305115},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.3912999927997589}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8125},{"id":"https://openalex.org/C17349429","wikidata":"https://www.wikidata.org/wiki/Q1049914","display_name":"Matrix multiplication","level":3,"score":0.5455999970436096},{"id":"https://openalex.org/C56372850","wikidata":"https://www.wikidata.org/wiki/Q1050404","display_name":"Sparse matrix","level":3,"score":0.5235999822616577},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.5127999782562256},{"id":"https://openalex.org/C2780595030","wikidata":"https://www.wikidata.org/wiki/Q3860309","display_name":"Multiplication (music)","level":2,"score":0.5081999897956848},{"id":"https://openalex.org/C173801870","wikidata":"https://www.wikidata.org/wiki/Q201413","display_name":"Heuristic","level":2,"score":0.4936999976634979},{"id":"https://openalex.org/C135598885","wikidata":"https://www.wikidata.org/wiki/Q1366302","display_name":"Row","level":2,"score":0.47130000591278076},{"id":"https://openalex.org/C170723468","wikidata":"https://www.wikidata.org/wiki/Q182933","display_name":"x86","level":3,"score":0.4512999951839447},{"id":"https://openalex.org/C106487976","wikidata":"https://www.wikidata.org/wiki/Q685816","display_name":"Matrix (chemical analysis)","level":2,"score":0.4230000078678131},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.41179999709129333},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.41110000014305115},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.40560001134872437},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.3912999927997589},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.3864000141620636},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.37959998846054077},{"id":"https://openalex.org/C104140500","wikidata":"https://www.wikidata.org/wiki/Q2088159","display_name":"Row and column spaces","level":3,"score":0.36410000920295715},{"id":"https://openalex.org/C2780801425","wikidata":"https://www.wikidata.org/wiki/Q5164392","display_name":"Construct (python library)","level":2,"score":0.3521000146865845},{"id":"https://openalex.org/C162319229","wikidata":"https://www.wikidata.org/wiki/Q175263","display_name":"Data structure","level":2,"score":0.34630000591278076},{"id":"https://openalex.org/C74912251","wikidata":"https://www.wikidata.org/wiki/Q6815727","display_name":"Memory footprint","level":2,"score":0.3391000032424927},{"id":"https://openalex.org/C54848796","wikidata":"https://www.wikidata.org/wiki/Q339011","display_name":"Symmetric matrix","level":3,"score":0.30399999022483826},{"id":"https://openalex.org/C35912277","wikidata":"https://www.wikidata.org/wiki/Q1243369","display_name":"Double-precision floating-point format","level":3,"score":0.29269999265670776},{"id":"https://openalex.org/C42355184","wikidata":"https://www.wikidata.org/wiki/Q1361088","display_name":"Matrix decomposition","level":3,"score":0.2793000042438507},{"id":"https://openalex.org/C153247305","wikidata":"https://www.wikidata.org/wiki/Q835713","display_name":"Memory address","level":3,"score":0.27790001034736633},{"id":"https://openalex.org/C75291252","wikidata":"https://www.wikidata.org/wiki/Q1315756","display_name":"TRACE (psycholinguistics)","level":2,"score":0.25999999046325684},{"id":"https://openalex.org/C2779886137","wikidata":"https://www.wikidata.org/wiki/Q21030012","display_name":"Symmetry (geometry)","level":2,"score":0.25769999623298645}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3803015","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3803015","pdf_url":null,"source":{"id":"https://openalex.org/S26056741","display_name":"ACM Transactions on Architecture and Code Optimization","issn_l":"1544-3566","issn":["1544-3566","1544-3973"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Architecture and Code Optimization","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1145/3803015","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3803015","pdf_url":null,"source":{"id":"https://openalex.org/S26056741","display_name":"ACM Transactions on Architecture and Code Optimization","issn_l":"1544-3566","issn":["1544-3566","1544-3973"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Architecture and Code Optimization","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2179462485","display_name":null,"funder_award_id":"62272474","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":39,"referenced_works":["https://openalex.org/W1980140364","https://openalex.org/W1982182559","https://openalex.org/W1990808267","https://openalex.org/W1993704253","https://openalex.org/W1997196200","https://openalex.org/W2002555321","https://openalex.org/W2006412395","https://openalex.org/W2023871968","https://openalex.org/W2035080386","https://openalex.org/W2040389062","https://openalex.org/W2095420020","https://openalex.org/W2101511474","https://openalex.org/W2108301529","https://openalex.org/W2111667319","https://openalex.org/W2111784516","https://openalex.org/W2115052535","https://openalex.org/W2136324023","https://openalex.org/W2137541800","https://openalex.org/W2163842512","https://openalex.org/W2418287910","https://openalex.org/W2480854438","https://openalex.org/W2781752755","https://openalex.org/W2809496910","https://openalex.org/W2957142384","https://openalex.org/W2982464808","https://openalex.org/W2983719957","https://openalex.org/W3009233884","https://openalex.org/W3166510811","https://openalex.org/W3175878603","https://openalex.org/W3190673640","https://openalex.org/W4316084067","https://openalex.org/W4321636675","https://openalex.org/W4384705388","https://openalex.org/W4386997252","https://openalex.org/W4388855631","https://openalex.org/W4391985182","https://openalex.org/W4411670560","https://openalex.org/W4414198918","https://openalex.org/W4416784316"],"related_works":[],"abstract_inverted_index":{"Exploiting":[0],"matrix":[1,107,158],"symmetry":[2],"to":[3,35,77,96,119,147,185,206,220,274],"halve":[4],"memory":[5],"footprint":[6],"offers":[7],"a":[8,58,109,113,121,141,156,182,198,204,216],"substantial":[9],"opportunity":[10],"for":[11,48,89,145],"accelerating":[12],"memory-bound":[13],"computations":[14],"like":[15],"Sparse":[16],"Matrix-Vector":[17],"Multiplication":[18],"(SpMV).":[19],"However,":[20],"symmetric":[21,199,217,252],"SpMV":[22],"incurs":[23],"data":[24,98,173,222],"conflicts":[25,174],"when":[26],"concurrently":[27],"writing":[28],"the":[29,82,105,134,149,167,176,194,209,229,235,256,264,280,284],"output":[30],"vector.":[31],"Previous":[32],"approaches":[33,282],"fail":[34],"address":[36],"this":[37,162],"issue":[38],"efficiently,":[39],"i.e.,":[40],"either":[41],"are":[42],"non-scalable":[43],"or":[44,191,211],"yield":[45],"poor":[46],"performance":[47,236,265],"large":[49],"high-bandwidth":[50],"irregular":[51],"matrices.":[52],"This":[53],"article":[54],"extends":[55],"DCS-SpMV":[56,75,132],",":[57],"D":[59],"ivide-and-":[60],"C":[61],"onquer":[62],"(DC)":[63],"based":[64],"shared-memory":[65],"implementation":[66,170],"of":[67,74,152,197,215,237,266],"S":[68],"ymmetric":[69],"SpMV.":[70],"The":[71,100],"key":[72],"idea":[73],"is":[76],"recursively":[78],"divide":[79],"and":[80,92,112,133,159,246],"reorder":[81],"matrix-induced":[83],"conflict":[84,195],"graph":[85,196],"into":[86,108],"independent":[87],"subgraphs":[88,95],"parallel":[90],"execution,":[91],"construct":[93],"separate":[94],"avoid":[97],"conflicts.":[99,223],"DC":[101,153,169,177,230],"approach":[102],"naturally":[103],"transforms":[104],"input":[106],"low-conflict":[110],"part":[111,214],"high-conflict":[114],"part,":[115],"which":[116],"motivates":[117],"us":[118],"design":[120],"conflict-aware":[122],"hybrid":[123,168],"solution":[124],"DCH-SpMV":[125,146],"that":[126],"executes":[127],"these":[128],"two":[129],"parts":[130],"using":[131,250],"standard":[135],"SpMV,":[136],"respectively.":[137],"We":[138,239],"also":[139,233],"develop":[140],"machine":[142],"learning":[143],"model":[144],"predict":[148],"optimal":[150],"number":[151],"recursions":[154],"on":[155,243],"given":[157],"architecture.":[160],"In":[161],"work,":[163],"we":[164,180,202],"further":[165],"optimize":[166],"by":[171,272],"reducing":[172],"before":[175],"preprocessing.":[178],"First,":[179],"present":[181],"conflict-pruning":[183],"strategy":[184],"decouple":[186],"certain":[187],"highly":[188],"dense":[189],"columns":[190],"rows":[192],"from":[193,255],"matrix.":[200],"Second,":[201],"implement":[203],"heuristic":[205],"adaptively":[207],"select":[208],"lower":[210],"upper":[212],"triangular":[213],"matrix,":[218],"leading":[219],"fewer":[221],"Our":[224,260],"optimizations":[225,262],"not":[226],"only":[227],"facilitate":[228],"preprocessing,":[231],"but":[232],"improve":[234,263],"DCH-SpMV.":[238],"evaluate":[240],"our":[241],"work":[242],"both":[244],"x86":[245],"ARM":[247],"multi-core":[248],"CPUs":[249],"298":[251],"sparse":[253],"matrices":[254],"SuiteSparse":[257],"Matrix":[258],"Collection.":[259],"new":[261],"previous":[267],"version":[268],"[":[269],"42":[270],"]":[271],"up":[273],"4.89\u00d7,":[275],"demonstrating":[276],"significant":[277],"speedup":[278],"over":[279],"state-of-the-art":[281],"including":[283],"vendor-tuned":[285],"Intel":[286],"oneMKL":[287],"library.":[288]},"counts_by_year":[],"updated_date":"2026-06-26T06:17:10.115597","created_date":"2026-04-14T00:00:00"}