{"id":"https://openalex.org/A5113110407","orcid":"https://orcid.org/0009-0006-0260-9006","observed_orcids":["https://orcid.org/0009-0006-0260-9006"],"display_name":"Yuji Koguma","raw_author_names":["Koguma, Yuji","Yuji KOGUMA","Yuji Koguma"],"full_name":"Koguma, Yuji","works_count":18,"cited_by_count":39,"summary_stats":{"2yr_mean_citedness":4.5,"h_index":4,"i10_index":1},"ids":{"openalex":"https://openalex.org/A5113110407","orcid":"https://orcid.org/0009-0006-0260-9006","observed_orcids":["https://orcid.org/0009-0006-0260-9006"]},"affiliations":[{"institution":{"id":"https://openalex.org/I130579109","ror":"https://ror.org/04185av43","display_name":"IHI Corporation (United States)","country_code":"US","type":"company","lineage":["https://openalex.org/I130579109","https://openalex.org/I4210101228"]},"years":[2026,2021,2015]},{"institution":{"id":"https://openalex.org/I180203408","ror":"https://ror.org/03zyp6p76","display_name":"Yokohama National University","country_code":"JP","type":"education","lineage":["https://openalex.org/I180203408"]},"years":[2025]},{"institution":{"id":"https://openalex.org/I203951103","ror":"https://ror.org/02kn6nx58","display_name":"Keio University","country_code":"JP","type":"education","lineage":["https://openalex.org/I203951103"]},"years":[2015,2014,2011,2010,2009]},{"institution":{"id":"https://openalex.org/I4210101228","ror":"https://ror.org/018nb9n34","display_name":"IHI Corporation (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210101228"]},"years":[2026,2025,2024,2022,2021,2020,2015]}],"last_known_institutions":[{"id":"https://openalex.org/I130579109","ror":"https://ror.org/04185av43","display_name":"IHI Corporation (United States)","country_code":"US","type":"company","lineage":["https://openalex.org/I130579109","https://openalex.org/I4210101228"]},{"id":"https://openalex.org/I4210101228","ror":"https://ror.org/018nb9n34","display_name":"IHI Corporation (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210101228"]}],"topics":[{"id":"https://openalex.org/T10100","display_name":"Metaheuristic Optimization Algorithms Research","count":15,"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/T10963","display_name":"Advanced Optimization Algorithms Research","count":7,"subfield":{"id":"https://openalex.org/subfields/2612","display_name":"Numerical Analysis"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10848","display_name":"Advanced Multi-Objective Optimization Algorithms","count":5,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"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/T10249","display_name":"Distributed Control Multi-Agent Systems","count":3,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/T11975","display_name":"Evolutionary Algorithms and Applications","count":3,"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"}}],"topic_share":[{"id":"https://openalex.org/T10848","display_name":"Advanced Multi-Objective Optimization Algorithms","value":4.02e-05,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"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/T10963","display_name":"Advanced Optimization Algorithms Research","value":3.62e-05,"subfield":{"id":"https://openalex.org/subfields/2612","display_name":"Numerical Analysis"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10100","display_name":"Metaheuristic Optimization Algorithms Research","value":3.59e-05,"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/T12176","display_name":"Optimization and Packing Problems","value":3.57e-05,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing 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/T11975","display_name":"Evolutionary Algorithms and Applications","value":2.15e-05,"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"}}],"x_concepts":[{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.779699981212616},{"id":"126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","score":0.6965238451957703},{"id":"11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","score":0.5590829253196716},{"id":"33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","score":0.483752965927124},{"id":"154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","score":0.4359999895095825}],"counts_by_year":[{"year":2009,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2011,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2014,"works_count":4,"oa_works_count":4,"cited_by_count":2},{"year":2015,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2020,"works_count":1,"oa_works_count":0,"cited_by_count":1},{"year":2021,"works_count":2,"oa_works_count":0,"cited_by_count":1},{"year":2022,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2024,"works_count":2,"oa_works_count":1,"cited_by_count":5},{"year":2025,"works_count":1,"oa_works_count":1,"cited_by_count":9},{"year":2026,"works_count":1,"oa_works_count":0,"cited_by_count":14}],"display_name_alternatives":["Koguma, Yuji","Yuji KOGUMA","Yuji Koguma"],"block_key":"y koguma","works_api_url":"https://api.openalex.org/works?filter=author.id:A5113110407","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5113110407","updated_date":"2026-11-08T12:57:04","created_date":"2016-06-24T00:00:00"}