{"id":"https://openalex.org/W7127324974","doi":"https://doi.org/10.1007/s00530-025-02188-4","title":"DocChainGraphNet: enhanced document-level relation extraction with heterogeneous graph and chain-of-thought reasoning","display_name":"DocChainGraphNet: enhanced document-level relation extraction with heterogeneous graph and chain-of-thought reasoning","publication_year":2026,"publication_date":"2026-02-03","ids":{"openalex":"https://openalex.org/W7127324974","doi":"https://doi.org/10.1007/s00530-025-02188-4"},"language":"en","primary_location":{"id":"doi:10.1007/s00530-025-02188-4","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00530-025-02188-4","pdf_url":null,"source":{"id":"https://openalex.org/S112262039","display_name":"Multimedia Systems","issn_l":"0942-4962","issn":["0942-4962","1432-1882"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Multimedia Systems","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5124927490","display_name":"Ying Wang","orcid":null},"institutions":[{"id":"https://openalex.org/I173899330","display_name":"Henan University","ror":"https://ror.org/003xyzq10","country_code":"CN","type":"education","lineage":["https://openalex.org/I173899330"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ying Wang","raw_affiliation_strings":["Henan International Joint Laboratory of Theories and Key Technologies on Intelligence Networks, Henan University, Kaifeng, 450046, China","Subject Innovation and Intelligence Introduction Base of Henan Higher Educational Institution, Software Engineering Intelligent Information Processing Innovation and Intelligence Introduction Base of Henan University, Kaifeng, 450046, China"],"affiliations":[{"raw_affiliation_string":"Henan International Joint Laboratory of Theories and Key Technologies on Intelligence Networks, Henan University, Kaifeng, 450046, China","institution_ids":["https://openalex.org/I173899330"]},{"raw_affiliation_string":"Subject Innovation and Intelligence Introduction Base of Henan Higher Educational Institution, Software Engineering Intelligent Information Processing Innovation and Intelligence Introduction Base of Henan University, Kaifeng, 450046, China","institution_ids":["https://openalex.org/I173899330"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5124935544","display_name":"Nan Li","orcid":null},"institutions":[{"id":"https://openalex.org/I173899330","display_name":"Henan University","ror":"https://ror.org/003xyzq10","country_code":"CN","type":"education","lineage":["https://openalex.org/I173899330"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Nan Li","raw_affiliation_strings":["Henan International Joint Laboratory of Theories and Key Technologies on Intelligence Networks, Henan University, Kaifeng, 450046, China"],"affiliations":[{"raw_affiliation_string":"Henan International Joint Laboratory of Theories and Key Technologies on Intelligence Networks, Henan University, Kaifeng, 450046, China","institution_ids":["https://openalex.org/I173899330"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5005240524","display_name":"Nan Liang","orcid":"https://orcid.org/0000-0002-3297-2694"},"institutions":[{"id":"https://openalex.org/I4210091706","display_name":"Henan Academy of Sciences","ror":"https://ror.org/00hy87220","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210091706"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Nan Liang","raw_affiliation_strings":["Henan Academy of Sciences, Zhengzhou, 450000, China"],"affiliations":[{"raw_affiliation_string":"Henan Academy of Sciences, Zhengzhou, 450000, China","institution_ids":["https://openalex.org/I4210091706"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5005240524"],"corresponding_institution_ids":["https://openalex.org/I4210091706"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.39750323,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"32","issue":"2","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10028","display_name":"Topic Modeling","score":0.8082000017166138,"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/T10028","display_name":"Topic Modeling","score":0.8082000017166138,"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/T13083","display_name":"Advanced Text Analysis Techniques","score":0.07079999893903732,"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/T11710","display_name":"Biomedical Text Mining and Ontologies","score":0.027499999850988388,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/relationship-extraction","display_name":"Relationship extraction","score":0.8119999766349792},{"id":"https://openalex.org/keywords/relation","display_name":"Relation (database)","score":0.7343000173568726},{"id":"https://openalex.org/keywords/sentence","display_name":"Sentence","score":0.4941999912261963},{"id":"https://openalex.org/keywords/task","display_name":"Task (project management)","score":0.47850000858306885},{"id":"https://openalex.org/keywords/field","display_name":"Field (mathematics)","score":0.4675999879837036},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.43220001459121704},{"id":"https://openalex.org/keywords/information-extraction","display_name":"Information extraction","score":0.3968999981880188},{"id":"https://openalex.org/keywords/natural-language","display_name":"Natural language","score":0.38960000872612}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8148999810218811},{"id":"https://openalex.org/C153604712","wikidata":"https://www.wikidata.org/wiki/Q7310755","display_name":"Relationship extraction","level":3,"score":0.8119999766349792},{"id":"https://openalex.org/C25343380","wikidata":"https://www.wikidata.org/wiki/Q277521","display_name":"Relation (database)","level":2,"score":0.7343000173568726},{"id":"https://openalex.org/C2777530160","wikidata":"https://www.wikidata.org/wiki/Q41796","display_name":"Sentence","level":2,"score":0.4941999912261963},{"id":"https://openalex.org/C2780451532","wikidata":"https://www.wikidata.org/wiki/Q759676","display_name":"Task (project management)","level":2,"score":0.47850000858306885},{"id":"https://openalex.org/C9652623","wikidata":"https://www.wikidata.org/wiki/Q190109","display_name":"Field (mathematics)","level":2,"score":0.4675999879837036},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.46299999952316284},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.43220001459121704},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.4047999978065491},{"id":"https://openalex.org/C195807954","wikidata":"https://www.wikidata.org/wiki/Q1662562","display_name":"Information extraction","level":2,"score":0.3968999981880188},{"id":"https://openalex.org/C195324797","wikidata":"https://www.wikidata.org/wiki/Q33742","display_name":"Natural language","level":2,"score":0.38960000872612},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3774999976158142},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3555000126361847},{"id":"https://openalex.org/C2988080768","wikidata":"https://www.wikidata.org/wiki/Q7095057","display_name":"Semantic relation","level":3,"score":0.3458999991416931},{"id":"https://openalex.org/C134752490","wikidata":"https://www.wikidata.org/wiki/Q374182","display_name":"Logical consequence","level":2,"score":0.33340001106262207},{"id":"https://openalex.org/C95318506","wikidata":"https://www.wikidata.org/wiki/Q6588467","display_name":"Textual entailment","level":3,"score":0.304500013589859},{"id":"https://openalex.org/C2987255567","wikidata":"https://www.wikidata.org/wiki/Q33002955","display_name":"Knowledge graph","level":2,"score":0.30320000648498535},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.30250000953674316},{"id":"https://openalex.org/C184337299","wikidata":"https://www.wikidata.org/wiki/Q1437428","display_name":"Semantics (computer science)","level":2,"score":0.2985000014305115},{"id":"https://openalex.org/C2779304628","wikidata":"https://www.wikidata.org/wiki/Q3503480","display_name":"Face (sociological concept)","level":2,"score":0.2953999936580658},{"id":"https://openalex.org/C2779439875","wikidata":"https://www.wikidata.org/wiki/Q1078276","display_name":"Natural language understanding","level":3,"score":0.2773999869823456},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.26579999923706055},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.26190000772476196},{"id":"https://openalex.org/C17231256","wikidata":"https://www.wikidata.org/wiki/Q5156540","display_name":"Completeness (order theory)","level":2,"score":0.25440001487731934}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/s00530-025-02188-4","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00530-025-02188-4","pdf_url":null,"source":{"id":"https://openalex.org/S112262039","display_name":"Multimedia Systems","issn_l":"0942-4962","issn":["0942-4962","1432-1882"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Multimedia Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5185760259628296,"id":"https://metadata.un.org/sdg/4","display_name":"Quality Education"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":23,"referenced_works":["https://openalex.org/W2346452181","https://openalex.org/W2952179106","https://openalex.org/W2962859618","https://openalex.org/W2963014179","https://openalex.org/W2971221499","https://openalex.org/W2984452801","https://openalex.org/W3021224558","https://openalex.org/W3027691400","https://openalex.org/W3035053871","https://openalex.org/W3093891978","https://openalex.org/W3100557836","https://openalex.org/W3102663935","https://openalex.org/W3103836967","https://openalex.org/W3116122129","https://openalex.org/W3118018449","https://openalex.org/W3173229273","https://openalex.org/W3173905097","https://openalex.org/W3175344781","https://openalex.org/W4200491506","https://openalex.org/W4281969489","https://openalex.org/W4285092290","https://openalex.org/W4320731355","https://openalex.org/W4412888116"],"related_works":[],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-02-07T06:11:34.122080","created_date":"2026-02-04T00:00:00"}