{"id":"https://openalex.org/W7152661718","doi":"https://doi.org/10.1145/3774904.3792730","title":"RPO-RAG: Aligning Small LLMs with Relation-aware Preference Optimization for Knowledge Graph Question Answering","display_name":"RPO-RAG: Aligning Small LLMs with Relation-aware Preference Optimization for Knowledge Graph Question Answering","publication_year":2026,"publication_date":"2026-04-09","ids":{"openalex":"https://openalex.org/W7152661718","doi":"https://doi.org/10.1145/3774904.3792730"},"language":null,"primary_location":{"id":"doi:10.1145/3774904.3792730","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3774904.3792730","pdf_url":null,"source":null,"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the ACM Web Conference 2026","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1145/3774904.3792730","any_repository_has_fulltext":null},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5115087012","display_name":"Kaehyun Um","orcid":null},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Kaehyun Um","raw_affiliation_strings":["Department of Computer Science, Yonsei University, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0009-0005-2366-5296","affiliations":[{"raw_affiliation_string":"Department of Computer Science, Yonsei University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081189686","display_name":"Kyuhwan Yeom","orcid":"https://orcid.org/0009-0003-4252-6203"},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"KyuHwan Yeom","raw_affiliation_strings":["Department of Computer Science, Yonsei University, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0009-0003-4252-6203","affiliations":[{"raw_affiliation_string":"Department of Computer Science, Yonsei University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5124052506","display_name":"Haerim Yang","orcid":null},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Haerim Yang","raw_affiliation_strings":["Department of Artificial Intelligence, Yonsei University, Seoul, Republic of Korea","Department of Computer Science, Yonsei University, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0009-0005-4664-6880","affiliations":[{"raw_affiliation_string":"Department of Artificial Intelligence, Yonsei University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I193775966"]},{"raw_affiliation_string":"Department of Computer Science, Yonsei University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5124091338","display_name":"Minyoung Choi","orcid":null},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Minyoung Choi","raw_affiliation_strings":["Department of Computer Science, Yonsei University, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0009-0007-3838-706X","affiliations":[{"raw_affiliation_string":"Department of Computer Science, Yonsei University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070033779","display_name":"Hyeongjun Yang","orcid":"https://orcid.org/0000-0001-7958-224X"},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hyeongjun Yang","raw_affiliation_strings":["Department of Artificial Intelligence, Yonsei University, Seoul, Republic of Korea","Department of Computer Science, Yonsei University, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0001-7958-224X","affiliations":[{"raw_affiliation_string":"Department of Artificial Intelligence, Yonsei University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I193775966"]},{"raw_affiliation_string":"Department of Computer Science, Yonsei University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044514062","display_name":"Kyong-Ho Lee","orcid":"https://orcid.org/0000-0002-1581-917X"},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Kyong-Ho Lee","raw_affiliation_strings":["Department of Computer Science, Yonsei University, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-1581-917X","affiliations":[{"raw_affiliation_string":"Department of Computer Science, Yonsei University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I193775966"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5115087012"],"corresponding_institution_ids":["https://openalex.org/I193775966"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.79007941,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"2513","last_page":"2523"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11273","display_name":"Advanced Graph Neural Networks","score":0.7089999914169312,"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/T11273","display_name":"Advanced Graph Neural Networks","score":0.7089999914169312,"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/T10028","display_name":"Topic Modeling","score":0.12430000305175781,"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/T11714","display_name":"Multimodal Machine Learning Applications","score":0.030500000342726707,"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/question-answering","display_name":"Question answering","score":0.5809999704360962},{"id":"https://openalex.org/keywords/preference","display_name":"Preference","score":0.4627000093460083},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.3889000117778778},{"id":"https://openalex.org/keywords/circumscription","display_name":"Circumscription","score":0.3416000008583069},{"id":"https://openalex.org/keywords/knowledge-graph","display_name":"Knowledge graph","score":0.32359999418258667}],"concepts":[{"id":"https://openalex.org/C44291984","wikidata":"https://www.wikidata.org/wiki/Q1074173","display_name":"Question answering","level":2,"score":0.5809999704360962},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5184000134468079},{"id":"https://openalex.org/C2781249084","wikidata":"https://www.wikidata.org/wiki/Q908656","display_name":"Preference","level":2,"score":0.4627000093460083},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4088999927043915},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.3889000117778778},{"id":"https://openalex.org/C56739046","wikidata":"https://www.wikidata.org/wiki/Q192060","display_name":"Knowledge management","level":1,"score":0.36410000920295715},{"id":"https://openalex.org/C62360110","wikidata":"https://www.wikidata.org/wiki/Q96777007","display_name":"Circumscription","level":2,"score":0.3416000008583069},{"id":"https://openalex.org/C2987255567","wikidata":"https://www.wikidata.org/wiki/Q33002955","display_name":"Knowledge graph","level":2,"score":0.32359999418258667},{"id":"https://openalex.org/C115925183","wikidata":"https://www.wikidata.org/wiki/Q1412694","display_name":"Knowledge-based systems","level":2,"score":0.289900004863739},{"id":"https://openalex.org/C161301231","wikidata":"https://www.wikidata.org/wiki/Q3478658","display_name":"Knowledge representation and reasoning","level":2,"score":0.2865999937057495},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.2827000021934509}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3774904.3792730","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3774904.3792730","pdf_url":null,"source":null,"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the ACM Web Conference 2026","raw_type":"proceedings-article"}],"best_oa_location":{"id":"doi:10.1145/3774904.3792730","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3774904.3792730","pdf_url":null,"source":null,"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the ACM Web Conference 2026","raw_type":"proceedings-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W2094728533","https://openalex.org/W2097749765","https://openalex.org/W2890961898","https://openalex.org/W2964120615","https://openalex.org/W2970641574","https://openalex.org/W3116847845","https://openalex.org/W4225580830","https://openalex.org/W4385568412","https://openalex.org/W4385569771","https://openalex.org/W4390692489","https://openalex.org/W4396722534","https://openalex.org/W4404793000","https://openalex.org/W4409363066","https://openalex.org/W4409671924","https://openalex.org/W4412888160","https://openalex.org/W7133211372"],"related_works":[],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-04-29T09:16:38.111599","created_date":"2026-04-10T00:00:00"}