{"id":"https://openalex.org/W4409985273","doi":"https://doi.org/10.1109/access.2025.3565767","title":"Balancing Diversity in Session-Based Recommendation Between Relevance and Unexpectedness","display_name":"Balancing Diversity in Session-Based Recommendation Between Relevance and Unexpectedness","publication_year":2025,"publication_date":"2025-01-01","ids":{"openalex":"https://openalex.org/W4409985273","doi":"https://doi.org/10.1109/access.2025.3565767"},"language":"en","primary_location":{"id":"doi:10.1109/access.2025.3565767","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2025.3565767","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1109/access.2025.3565767","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5083807006","display_name":"Sangyeon Kim","orcid":"https://orcid.org/0000-0001-9316-7982"},"institutions":[{"id":"https://openalex.org/I31766871","display_name":"Sookmyung Women's University","ror":"https://ror.org/00vvvt117","country_code":"KR","type":"education","lineage":["https://openalex.org/I31766871"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Sangyeon Kim","raw_affiliation_strings":["Division of Artificial Intelligence Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul, Republic of Korea","Division of Artificial Intelligence Engineering, Sookmyung Women’s University, 100 Cheongpa-ro 47-gil, Yongsan-gu, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0001-9316-7982","affiliations":[{"raw_affiliation_string":"Division of Artificial Intelligence Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I31766871"]},{"raw_affiliation_string":"Division of Artificial Intelligence Engineering, Sookmyung Women’s University, 100 Cheongpa-ro 47-gil, Yongsan-gu, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I31766871"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086949348","display_name":"Sanghyeok Boo","orcid":"https://orcid.org/0000-0003-2079-3485"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]},{"id":"https://openalex.org/I4210161052","display_name":"Korea University","ror":"https://ror.org/05m1gnk07","country_code":"JP","type":"education","lineage":["https://openalex.org/I4210161052"]}],"countries":["JP","KR"],"is_corresponding":false,"raw_author_name":"Sanghyeok Boo","raw_affiliation_strings":["Department of Industrial and Management Engineering, Korea University, Seongbuk-gu, Seoul, Republic of Korea","Department of Industrial and Management Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, Republic of Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Industrial and Management Engineering, Korea University, Seongbuk-gu, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I197347611","https://openalex.org/I4210161052"]},{"raw_affiliation_string":"Department of Industrial and Management Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I197347611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057814888","display_name":"Gyewon Jeon","orcid":"https://orcid.org/0000-0002-4794-0046"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]},{"id":"https://openalex.org/I4210161052","display_name":"Korea University","ror":"https://ror.org/05m1gnk07","country_code":"JP","type":"education","lineage":["https://openalex.org/I4210161052"]}],"countries":["JP","KR"],"is_corresponding":false,"raw_author_name":"Gyewon Jeon","raw_affiliation_strings":["Department of Industrial and Management Engineering, Korea University, Seongbuk-gu, Seoul, Republic of Korea","Department of Industrial and Management Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-4794-0046","affiliations":[{"raw_affiliation_string":"Department of Industrial and Management Engineering, Korea University, Seongbuk-gu, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I197347611","https://openalex.org/I4210161052"]},{"raw_affiliation_string":"Department of Industrial and Management Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I197347611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100750495","display_name":"Dongmin Shin","orcid":"https://orcid.org/0000-0003-1785-4603"},"institutions":[{"id":"https://openalex.org/I4575257","display_name":"Hanyang University","ror":"https://ror.org/046865y68","country_code":"KR","type":"education","lineage":["https://openalex.org/I4575257"]},{"id":"https://openalex.org/I93906172","display_name":"Anyang University","ror":"https://ror.org/018pdh902","country_code":"KR","type":"education","lineage":["https://openalex.org/I93906172"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Dongmin Shin","raw_affiliation_strings":["Department of Industrial and Management Engineering, Hanyang University ERICA, Sangnok-gu, Ansan-si, Gyeonggi-do, Republic of Korea","Department of Industrial and Management Engineering, Hanyang University ERICA, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan-si, Gyeonggi-do, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0003-1785-4603","affiliations":[{"raw_affiliation_string":"Department of Industrial and Management Engineering, Hanyang University ERICA, Sangnok-gu, Ansan-si, Gyeonggi-do, Republic of Korea","institution_ids":["https://openalex.org/I4575257","https://openalex.org/I93906172"]},{"raw_affiliation_string":"Department of Industrial and Management Engineering, Hanyang University ERICA, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan-si, Gyeonggi-do, Republic of Korea","institution_ids":["https://openalex.org/I4575257"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5081498898","display_name":"Sangwon Lee","orcid":"https://orcid.org/0000-0002-9825-0854"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]},{"id":"https://openalex.org/I4210161052","display_name":"Korea University","ror":"https://ror.org/05m1gnk07","country_code":"JP","type":"education","lineage":["https://openalex.org/I4210161052"]}],"countries":["JP","KR"],"is_corresponding":false,"raw_author_name":"Sangwon Lee","raw_affiliation_strings":["Department of Industrial and Management Engineering, Korea University, Seongbuk-gu, Seoul, Republic of Korea","Department of Industrial and Management Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-9825-0854","affiliations":[{"raw_affiliation_string":"Department of Industrial and Management Engineering, Korea University, Seongbuk-gu, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I197347611","https://openalex.org/I4210161052"]},{"raw_affiliation_string":"Department of Industrial and Management Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I197347611"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5083807006"],"corresponding_institution_ids":["https://openalex.org/I31766871"],"apc_list":{"value":1850,"currency":"USD","value_usd":1850},"apc_paid":{"value":1850,"currency":"USD","value_usd":1850},"fwci":14.0297,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.98411816,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":95,"max":98},"biblio":{"volume":"13","issue":null,"first_page":"77833","last_page":"77846"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13910","display_name":"Computational and Text Analysis Methods","score":0.4307999908924103,"subfield":{"id":"https://openalex.org/subfields/3300","display_name":"General Social Sciences"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T13910","display_name":"Computational and Text Analysis Methods","score":0.4307999908924103,"subfield":{"id":"https://openalex.org/subfields/3300","display_name":"General Social Sciences"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.4016000032424927,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T10028","display_name":"Topic Modeling","score":0.38679999113082886,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7076170444488525},{"id":"https://openalex.org/keywords/session","display_name":"Session (web analytics)","score":0.6535606384277344},{"id":"https://openalex.org/keywords/relevance","display_name":"Relevance (law)","score":0.4814662039279938},{"id":"https://openalex.org/keywords/diversity","display_name":"Diversity (politics)","score":0.4334176778793335},{"id":"https://openalex.org/keywords/relevance-feedback","display_name":"Relevance feedback","score":0.4262639880180359},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.3256862163543701},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.2529918849468231},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.14348098635673523},{"id":"https://openalex.org/keywords/image-retrieval","display_name":"Image retrieval","score":0.05921444296836853}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7076170444488525},{"id":"https://openalex.org/C2779182362","wikidata":"https://www.wikidata.org/wiki/Q17126187","display_name":"Session (web analytics)","level":2,"score":0.6535606384277344},{"id":"https://openalex.org/C158154518","wikidata":"https://www.wikidata.org/wiki/Q7310970","display_name":"Relevance (law)","level":2,"score":0.4814662039279938},{"id":"https://openalex.org/C2781316041","wikidata":"https://www.wikidata.org/wiki/Q1230584","display_name":"Diversity (politics)","level":2,"score":0.4334176778793335},{"id":"https://openalex.org/C2779532271","wikidata":"https://www.wikidata.org/wiki/Q445558","display_name":"Relevance feedback","level":4,"score":0.4262639880180359},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.3256862163543701},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.2529918849468231},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.14348098635673523},{"id":"https://openalex.org/C1667742","wikidata":"https://www.wikidata.org/wiki/Q10927554","display_name":"Image retrieval","level":3,"score":0.05921444296836853},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0},{"id":"https://openalex.org/C19165224","wikidata":"https://www.wikidata.org/wiki/Q23404","display_name":"Anthropology","level":1,"score":0.0},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/access.2025.3565767","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2025.3565767","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:55182846485846f1bae57a4258a4cab7","is_oa":true,"landing_page_url":"https://doaj.org/article/55182846485846f1bae57a4258a4cab7","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Access, Vol 13, Pp 77833-77846 (2025)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/access.2025.3565767","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2025.3565767","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G518741455","display_name":null,"funder_award_id":"RS-2022-00156423","funder_id":"https://openalex.org/F4320327819","funder_display_name":"Ministry of SMEs and Startups"},{"id":"https://openalex.org/G5644242419","display_name":null,"funder_award_id":"2022-0-00078","funder_id":"https://openalex.org/F4320328359","funder_display_name":"Ministry of Science and ICT, South Korea"},{"id":"https://openalex.org/G7293529707","display_name":null,"funder_award_id":"RS-2023-00210250","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"}],"funders":[{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"},{"id":"https://openalex.org/F4320327819","display_name":"Ministry of SMEs and Startups","ror":null},{"id":"https://openalex.org/F4320328359","display_name":"Ministry of Science and ICT, South Korea","ror":"https://ror.org/01wpjm123"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":44,"referenced_works":["https://openalex.org/W1774663064","https://openalex.org/W1814144709","https://openalex.org/W1971040550","https://openalex.org/W1996533415","https://openalex.org/W2005084129","https://openalex.org/W2042320784","https://openalex.org/W2045453095","https://openalex.org/W2049670925","https://openalex.org/W2054141820","https://openalex.org/W2073927923","https://openalex.org/W2097951507","https://openalex.org/W2152228468","https://openalex.org/W2153578526","https://openalex.org/W2155912844","https://openalex.org/W2161676175","https://openalex.org/W2417180752","https://openalex.org/W2508625104","https://openalex.org/W2514091133","https://openalex.org/W2562236173","https://openalex.org/W2731242495","https://openalex.org/W2801787921","https://openalex.org/W2809099395","https://openalex.org/W2811138351","https://openalex.org/W2896873311","https://openalex.org/W2897429051","https://openalex.org/W2899457523","https://openalex.org/W2903119928","https://openalex.org/W2997672513","https://openalex.org/W3021402147","https://openalex.org/W3088231800","https://openalex.org/W3097300053","https://openalex.org/W3138773240","https://openalex.org/W3185693672","https://openalex.org/W3188443178","https://openalex.org/W4284688657","https://openalex.org/W4360978814","https://openalex.org/W4385494429","https://openalex.org/W4392822714","https://openalex.org/W6683355481","https://openalex.org/W6686821501","https://openalex.org/W6715570297","https://openalex.org/W6751707208","https://openalex.org/W6776169750","https://openalex.org/W6840072539"],"related_works":["https://openalex.org/W1921936017","https://openalex.org/W2001985945","https://openalex.org/W2009716188","https://openalex.org/W1518380457","https://openalex.org/W1971071004","https://openalex.org/W1973132420","https://openalex.org/W2460037195","https://openalex.org/W2142731558","https://openalex.org/W2077213532","https://openalex.org/W2157408137"],"abstract_inverted_index":{"Recommender":[0],"systems":[1,15,180],"encounter":[2],"the":[3,10,81,98,105,127,182],"potential":[4],"problem":[5],"of":[6,12,66,97],"filter":[7],"bubble,":[8],"neglecting":[9],"diversity":[11,47,63,165],"recommendations.":[13,28],"These":[14],"are":[16],"inevitable":[17],"to":[18,35,42,61,109,141,145,172],"lower":[19],"user":[20],"experience":[21],"because":[22],"they":[23],"cannot":[24],"but":[25,160],"provide":[26],"tedious":[27],"Although":[29],"several":[30],"solutions":[31],"have":[32],"been":[33],"introduced":[34],"increase":[36],"diversity,":[37],"it":[38,113],"is":[39],"still":[40],"challenging":[41],"prevent":[43],"accuracy":[44,147,167],"loss":[45],"with":[46,137],"enhancement.":[48],"This":[49,169],"study":[50,170],"presents":[51],"a":[52,94,100,120],"new":[53],"user-oriented":[54],"algorithm":[55,96],"for":[56,104,177],"session-based":[57,178],"recommendations":[58],"that":[59,122,153],"aims":[60],"improve":[62],"in":[64],"consideration":[65],"two":[67,138],"serendipity":[68],"components\u2014relevance":[69],"and":[70,87,148],"unexpectedness.":[71],"Specifically,":[72],"our":[73,131,154],"approach":[74,155],"first":[75],"adopts":[76],"serendipitous":[77],"preference":[78],"embedding":[79],"into":[80],"recommender":[82,179],"system":[83],"based":[84],"on":[85],"session":[86],"graph":[88],"neural":[89],"networks.":[90],"Next,":[91],"we":[92,133],"leverage":[93],"greedy":[95],"maximum":[99],"posteriori":[101],"(MAP)":[102],"inference":[103],"determinantal":[106],"point":[107],"process":[108],"re-rank":[110],"items.":[111],"Lastly,":[112],"additionally":[114],"incorporates":[115],"personalized":[116],"trade-off":[117],"balancing":[118],"through":[119],"parameter":[121],"can":[123],"be":[124],"controlled":[125],"by":[126],"user.":[128],"To":[129],"validate":[130],"approach,":[132],"conducted":[134],"an":[135],"experiment":[136],"real-world":[139],"datasets":[140],"demonstrate":[142],"its":[143],"ability":[144],"balance":[146],"diversity.":[149],"The":[150],"results":[151],"showed":[152],"generated":[156],"not":[157],"only":[158],"relevant":[159],"unexpected":[161],"recommendations,":[162],"successfully":[163],"improving":[164],"without":[166],"loss.":[168],"contributes":[171],"recommendation":[173],"diversification":[174],"methods,":[175],"especially":[176],"under":[181],"user-centric":[183],"perspective.":[184]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2}],"updated_date":"2026-05-06T08:25:59.206177","created_date":"2025-10-10T00:00:00"}