{"id":"https://openalex.org/W4416445283","doi":"https://doi.org/10.18653/v1/2026.acl-long.704","title":"Hallucination Detection in LLMs with Topological Divergence on Attention Graphs","display_name":"Hallucination Detection in LLMs with Topological Divergence on Attention Graphs","publication_year":2026,"publication_date":"2026-01-01","ids":{"openalex":"https://openalex.org/W4416445283","doi":"https://doi.org/10.18653/v1/2026.acl-long.704"},"language":"en","primary_location":{"id":"doi:10.18653/v1/2026.acl-long.704","is_oa":true,"landing_page_url":"https://doi.org/10.18653/v1/2026.acl-long.704","pdf_url":"https://aclanthology.org/2026.acl-long.704.pdf","source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://aclanthology.org/2026.acl-long.704.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5094584048","display_name":"Alexandra Bazarova","orcid":null},"institutions":[{"id":"https://openalex.org/I2799847335","display_name":"Art Institute of Portland","ror":"https://ror.org/01cb0jg64","country_code":"US","type":"education","lineage":["https://openalex.org/I2799847335","https://openalex.org/I2799969541"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Alexandra Bazarova","raw_affiliation_strings":["Applied AI Institute ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Applied AI Institute ,","institution_ids":["https://openalex.org/I2799847335"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5120510199","display_name":"Andrei Volodichev","orcid":null},"institutions":[{"id":"https://openalex.org/I2799847335","display_name":"Art Institute of Portland","ror":"https://ror.org/01cb0jg64","country_code":"US","type":"education","lineage":["https://openalex.org/I2799847335","https://openalex.org/I2799969541"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Andrei Volodichev","raw_affiliation_strings":["Applied AI Institute ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Applied AI Institute ,","institution_ids":["https://openalex.org/I2799847335"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5107179521","display_name":"Aleksandr Yugay","orcid":null},"institutions":[{"id":"https://openalex.org/I2799847335","display_name":"Art Institute of Portland","ror":"https://ror.org/01cb0jg64","country_code":"US","type":"education","lineage":["https://openalex.org/I2799847335","https://openalex.org/I2799969541"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Aleksandr Yugay","raw_affiliation_strings":["Applied AI Institute ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Applied AI Institute ,","institution_ids":["https://openalex.org/I2799847335"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108273763","display_name":"A. A. Shulga","orcid":"https://orcid.org/0009-0006-1125-2897"},"institutions":[{"id":"https://openalex.org/I2799847335","display_name":"Art Institute of Portland","ror":"https://ror.org/01cb0jg64","country_code":"US","type":"education","lineage":["https://openalex.org/I2799847335","https://openalex.org/I2799969541"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Andrey Shulga","raw_affiliation_strings":["Applied AI Institute ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Applied AI Institute ,","institution_ids":["https://openalex.org/I2799847335"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5092810068","display_name":"Alina Ermilova","orcid":"https://orcid.org/0000-0002-1392-6908"},"institutions":[{"id":"https://openalex.org/I2799847335","display_name":"Art Institute of Portland","ror":"https://ror.org/01cb0jg64","country_code":"US","type":"education","lineage":["https://openalex.org/I2799847335","https://openalex.org/I2799969541"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Alina Ermilova","raw_affiliation_strings":["Applied AI Institute ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Applied AI Institute ,","institution_ids":["https://openalex.org/I2799847335"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5021254770","display_name":"Konstantin Polev","orcid":"https://orcid.org/0000-0002-0504-5940"},"institutions":[{"id":"https://openalex.org/I4210135510","display_name":"South Bend Museum of Art","ror":"https://ror.org/044h88456","country_code":"US","type":"archive","lineage":["https://openalex.org/I4210135510"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Konstantin Polev","raw_affiliation_strings":["SB AI Lab ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"SB AI Lab ,","institution_ids":["https://openalex.org/I4210135510"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5118969347","display_name":"Julia Belikova","orcid":null},"institutions":[{"id":"https://openalex.org/I4210135510","display_name":"South Bend Museum of Art","ror":"https://ror.org/044h88456","country_code":"US","type":"archive","lineage":["https://openalex.org/I4210135510"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Julia Belikova","raw_affiliation_strings":["SB AI Lab ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"SB AI Lab ,","institution_ids":["https://openalex.org/I4210135510"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5120510200","display_name":"Rauf Parchiev","orcid":null},"institutions":[{"id":"https://openalex.org/I4210135510","display_name":"South Bend Museum of Art","ror":"https://ror.org/044h88456","country_code":"US","type":"archive","lineage":["https://openalex.org/I4210135510"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Rauf Parchiev","raw_affiliation_strings":["SB AI Lab ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"SB AI Lab ,","institution_ids":["https://openalex.org/I4210135510"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083442032","display_name":"D. Simakov","orcid":"https://orcid.org/0009-0003-3199-479X"},"institutions":[{"id":"https://openalex.org/I4210135510","display_name":"South Bend Museum of Art","ror":"https://ror.org/044h88456","country_code":"US","type":"archive","lineage":["https://openalex.org/I4210135510"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Dmitry Simakov","raw_affiliation_strings":["SB AI Lab ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"SB AI Lab ,","institution_ids":["https://openalex.org/I4210135510"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109057196","display_name":"M. A. Savchenko","orcid":null},"institutions":[{"id":"https://openalex.org/I4210135510","display_name":"South Bend Museum of Art","ror":"https://ror.org/044h88456","country_code":"US","type":"archive","lineage":["https://openalex.org/I4210135510"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Maxim Savchenko","raw_affiliation_strings":["SB AI Lab ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"SB AI Lab ,","institution_ids":["https://openalex.org/I4210135510"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008998801","display_name":"\u0410. \u0410. \u0421\u0430\u0432\u0447\u0435\u043d\u043a\u043e","orcid":"https://orcid.org/0000-0001-5829-672X"},"institutions":[{"id":"https://openalex.org/I102786147","display_name":"Dongseo University","ror":"https://ror.org/00wygsf57","country_code":"KR","type":"education","lineage":["https://openalex.org/I102786147"]},{"id":"https://openalex.org/I118501908","display_name":"National Research University Higher School of Economics","ror":"https://ror.org/055f7t516","country_code":"RU","type":"education","lineage":["https://openalex.org/I118501908"]},{"id":"https://openalex.org/I4210135510","display_name":"South Bend Museum of Art","ror":"https://ror.org/044h88456","country_code":"US","type":"archive","lineage":["https://openalex.org/I4210135510"]}],"countries":["KR","RU","US"],"is_corresponding":false,"raw_author_name":"Andrey Savchenko","raw_affiliation_strings":["HSE University ,","SB AI Lab ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"HSE University ,","institution_ids":["https://openalex.org/I102786147","https://openalex.org/I118501908"]},{"raw_affiliation_string":"SB AI Lab ,","institution_ids":["https://openalex.org/I4210135510"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003291216","display_name":"Serguei Barannikov","orcid":"https://orcid.org/0000-0002-9323-0651"},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I2799847335","display_name":"Art Institute of Portland","ror":"https://ror.org/01cb0jg64","country_code":"US","type":"education","lineage":["https://openalex.org/I2799847335","https://openalex.org/I2799969541"]},{"id":"https://openalex.org/I4210091437","display_name":"Sorbonne Paris Cit\u00e9","ror":"https://ror.org/001z21q04","country_code":"FR","type":"other","lineage":["https://openalex.org/I4210091437"]}],"countries":["FR","US"],"is_corresponding":false,"raw_author_name":"Serguei Barannikov","raw_affiliation_strings":["Applied AI Institute ,","CNRS , Universite Paris Cite"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Applied AI Institute ,","institution_ids":["https://openalex.org/I2799847335"]},{"raw_affiliation_string":"CNRS , Universite Paris Cite","institution_ids":["https://openalex.org/I1294671590","https://openalex.org/I4210091437"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5011905327","display_name":"Alexey Zaytsev","orcid":"https://orcid.org/0000-0002-1653-0204"},"institutions":[{"id":"https://openalex.org/I2799847335","display_name":"Art Institute of Portland","ror":"https://ror.org/01cb0jg64","country_code":"US","type":"education","lineage":["https://openalex.org/I2799847335","https://openalex.org/I2799969541"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Alexey Zaytsev","raw_affiliation_strings":["Applied AI Institute ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Applied AI Institute ,","institution_ids":["https://openalex.org/I2799847335"]}]}],"institutions":[],"countries_distinct_count":4,"institutions_distinct_count":6,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.027581,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"15449","last_page":"15470"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11273","display_name":"Advanced Graph Neural Networks","score":0.3718999922275543,"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":0.3718999922275543,"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":0.20659999549388885,"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/T11147","display_name":"Misinformation and Its Impacts","score":0.09390000253915787,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/divergence","display_name":"Divergence (linguistics)","score":0.7491000294685364},{"id":"https://openalex.org/keywords/automatic-summarization","display_name":"Automatic summarization","score":0.7294999957084656},{"id":"https://openalex.org/keywords/hallucinating","display_name":"Hallucinating","score":0.7146000266075134},{"id":"https://openalex.org/keywords/metric","display_name":"Metric (unit)","score":0.659600019454956},{"id":"https://openalex.org/keywords/naturalness","display_name":"Naturalness","score":0.4339999854564667},{"id":"https://openalex.org/keywords/reliability","display_name":"Reliability (semiconductor)","score":0.420199990272522}],"concepts":[{"id":"https://openalex.org/C207390915","wikidata":"https://www.wikidata.org/wiki/Q1230525","display_name":"Divergence (linguistics)","level":2,"score":0.7491000294685364},{"id":"https://openalex.org/C170858558","wikidata":"https://www.wikidata.org/wiki/Q1394144","display_name":"Automatic summarization","level":2,"score":0.7294999957084656},{"id":"https://openalex.org/C2911011789","wikidata":"https://www.wikidata.org/wiki/Q130741","display_name":"Hallucinating","level":2,"score":0.7146000266075134},{"id":"https://openalex.org/C176217482","wikidata":"https://www.wikidata.org/wiki/Q860554","display_name":"Metric (unit)","level":2,"score":0.659600019454956},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.48820000886917114},{"id":"https://openalex.org/C134537474","wikidata":"https://www.wikidata.org/wiki/Q17144832","display_name":"Naturalness","level":2,"score":0.4339999854564667},{"id":"https://openalex.org/C43214815","wikidata":"https://www.wikidata.org/wiki/Q7310987","display_name":"Reliability (semiconductor)","level":3,"score":0.420199990272522},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.41929998993873596},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.41769999265670776},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.359499990940094},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3402999937534332},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.32179999351501465},{"id":"https://openalex.org/C184898388","wikidata":"https://www.wikidata.org/wiki/Q1435712","display_name":"Pairwise comparison","level":2,"score":0.29580000042915344},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.29100000858306885},{"id":"https://openalex.org/C164226766","wikidata":"https://www.wikidata.org/wiki/Q7293202","display_name":"Rank (graph theory)","level":2,"score":0.2825999855995178},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.2721000015735626},{"id":"https://openalex.org/C94915269","wikidata":"https://www.wikidata.org/wiki/Q1834857","display_name":"Detector","level":2,"score":0.260699987411499}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.18653/v1/2026.acl-long.704","is_oa":true,"landing_page_url":"https://doi.org/10.18653/v1/2026.acl-long.704","pdf_url":"https://aclanthology.org/2026.acl-long.704.pdf","source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)","raw_type":"proceedings-article"},{"id":"pmh:oai:arXiv.org:2504.10063","is_oa":true,"landing_page_url":"https://arxiv.org/abs/2504.10063","pdf_url":"https://arxiv.org/pdf/2504.10063","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2504.10063","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2504.10063","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"doi:10.18653/v1/2026.acl-long.704","is_oa":true,"landing_page_url":"https://doi.org/10.18653/v1/2026.acl-long.704","pdf_url":"https://aclanthology.org/2026.acl-long.704.pdf","source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)","raw_type":"proceedings-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1550044415","display_name":null,"funder_award_id":"000000C313925P4F0002","funder_id":"https://openalex.org/F4320324632","funder_display_name":"Ministero dello Sviluppo Economico"}],"funders":[{"id":"https://openalex.org/F4320324632","display_name":"Ministero dello Sviluppo Economico","ror":"https://ror.org/011z3ff80"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4416445283.pdf","grobid_xml":"https://content.openalex.org/works/W4416445283.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Alexandra":[0],"Bazarova,":[1],"Andrei":[2],"Volodichev,":[3],"Aleksandr":[4],"Yugay,":[5],"Andrey":[6,20],"Shulga,":[7],"Alina":[8],"Ermilova,":[9],"Konstantin":[10],"Polev,":[11],"Julia":[12],"Belikova,":[13],"Rauf":[14],"Parchiev,":[15],"Dmitry":[16],"Simakov,":[17],"Maxim":[18],"Savchenko,":[19,21],"Serguei":[22],"Barannikov,":[23],"Alexey":[24],"Zaytsev.":[25],"Proceedings":[26],"of":[27,32],"the":[28,33],"64th":[29],"Annual":[30],"Meeting":[31],"Association":[34],"for":[35],"Computational":[36],"Linguistics":[37],"(Volume":[38],"1:":[39],"Long":[40],"Papers).":[41],"2026.":[42]},"counts_by_year":[],"updated_date":"2026-08-18T07:49:30.821534","created_date":"2025-10-10T00:00:00"}
