{"id":"https://openalex.org/W7123360736","doi":"https://doi.org/10.1109/lsp.2026.3652127","title":"HIER: Heterogeneous Information Bottleneck and Expert Routing for Social Bot Detection","display_name":"HIER: Heterogeneous Information Bottleneck and Expert Routing for Social Bot Detection","publication_year":2026,"publication_date":"2026-01-01","ids":{"openalex":"https://openalex.org/W7123360736","doi":"https://doi.org/10.1109/lsp.2026.3652127"},"language":null,"primary_location":{"id":"doi:10.1109/lsp.2026.3652127","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2026.3652127","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"is_oa":false,"is_in_doaj":false,"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Signal Processing Letters","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/A5044474309","display_name":"Kun Lu","orcid":"https://orcid.org/0000-0002-2900-107X"},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Kun Lu","raw_affiliation_strings":["Faculty of Computing, Harbin Institute of Technology, Harbin, China"],"affiliations":[{"raw_affiliation_string":"Faculty of Computing, Harbin Institute of Technology, Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5122875087","display_name":"Hongli Zhang","orcid":null},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hongli Zhang","raw_affiliation_strings":["Faculty of Computing, Harbin Institute of Technology, Harbin, China"],"affiliations":[{"raw_affiliation_string":"Faculty of Computing, Harbin Institute of Technology, Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025414151","display_name":"Yuchen Yang","orcid":"https://orcid.org/0000-0001-8495-6103"},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuchen Yang","raw_affiliation_strings":["Faculty of Computing, Harbin Institute of Technology, Harbin, China"],"affiliations":[{"raw_affiliation_string":"Faculty of Computing, Harbin Institute of Technology, Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5122848448","display_name":"Chao Meng","orcid":null},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chao Meng","raw_affiliation_strings":["Faculty of Computing, Harbin Institute of Technology, Harbin, China"],"affiliations":[{"raw_affiliation_string":"Faculty of Computing, Harbin Institute of Technology, Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5122875212","display_name":"Binxing Fang","orcid":null},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Binxing Fang","raw_affiliation_strings":["Faculty of Computing, Harbin Institute of Technology, Harbin, China"],"affiliations":[{"raw_affiliation_string":"Faculty of Computing, Harbin Institute of Technology, Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5044474309"],"corresponding_institution_ids":["https://openalex.org/I204983213"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.1010662,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"33","issue":null,"first_page":"521","last_page":"525"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11273","display_name":"Advanced Graph Neural Networks","score":0.275299996137619,"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":0.275299996137619,"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":0.25999999046325684,"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"}},{"id":"https://openalex.org/T11644","display_name":"Spam and Phishing Detection","score":0.19689999520778656,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/bottleneck","display_name":"Bottleneck","score":0.7886999845504761},{"id":"https://openalex.org/keywords/information-bottleneck-method","display_name":"Information bottleneck method","score":0.7638999819755554},{"id":"https://openalex.org/keywords/maximization","display_name":"Maximization","score":0.5529999732971191},{"id":"https://openalex.org/keywords/representation","display_name":"Representation (politics)","score":0.46059998869895935},{"id":"https://openalex.org/keywords/routing","display_name":"Routing (electronic design automation)","score":0.444599986076355},{"id":"https://openalex.org/keywords/consistency","display_name":"Consistency (knowledge bases)","score":0.4438999891281128}],"concepts":[{"id":"https://openalex.org/C2780513914","wikidata":"https://www.wikidata.org/wiki/Q18210350","display_name":"Bottleneck","level":2,"score":0.7886999845504761},{"id":"https://openalex.org/C60008888","wikidata":"https://www.wikidata.org/wiki/Q6031013","display_name":"Information bottleneck method","level":3,"score":0.7638999819755554},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7559999823570251},{"id":"https://openalex.org/C2776330181","wikidata":"https://www.wikidata.org/wiki/Q18358244","display_name":"Maximization","level":2,"score":0.5529999732971191},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.46059998869895935},{"id":"https://openalex.org/C74172769","wikidata":"https://www.wikidata.org/wiki/Q1446839","display_name":"Routing (electronic design automation)","level":2,"score":0.444599986076355},{"id":"https://openalex.org/C2776436953","wikidata":"https://www.wikidata.org/wiki/Q5163215","display_name":"Consistency (knowledge bases)","level":2,"score":0.4438999891281128},{"id":"https://openalex.org/C52622258","wikidata":"https://www.wikidata.org/wiki/Q131222","display_name":"Information theory","level":2,"score":0.40380001068115234},{"id":"https://openalex.org/C152139883","wikidata":"https://www.wikidata.org/wiki/Q252973","display_name":"Mutual information","level":2,"score":0.39719998836517334},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.37070000171661377},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3529999852180481},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.3513000011444092},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.33390000462532043},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.33070001006126404},{"id":"https://openalex.org/C4727928","wikidata":"https://www.wikidata.org/wiki/Q17164759","display_name":"Social network (sociolinguistics)","level":3,"score":0.3100000023841858},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.2913999855518341},{"id":"https://openalex.org/C88230418","wikidata":"https://www.wikidata.org/wiki/Q131476","display_name":"Graph theory","level":2,"score":0.2896000146865845},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.2709999978542328}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lsp.2026.3652127","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2026.3652127","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"is_oa":false,"is_in_doaj":false,"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Signal Processing Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.7702353596687317,"display_name":"Reduced inequalities","id":"https://metadata.un.org/sdg/10"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":31,"referenced_works":["https://openalex.org/W176212337","https://openalex.org/W2963361481","https://openalex.org/W2963806301","https://openalex.org/W2963910833","https://openalex.org/W2964184826","https://openalex.org/W2996320484","https://openalex.org/W2997788455","https://openalex.org/W3012871709","https://openalex.org/W3095296552","https://openalex.org/W3106914636","https://openalex.org/W3128443161","https://openalex.org/W3134349545","https://openalex.org/W3159541068","https://openalex.org/W3160322580","https://openalex.org/W3176405886","https://openalex.org/W3197022418","https://openalex.org/W3201583195","https://openalex.org/W4213147383","https://openalex.org/W4282982824","https://openalex.org/W4296242411","https://openalex.org/W4310067826","https://openalex.org/W4324298641","https://openalex.org/W4383340173","https://openalex.org/W4384828840","https://openalex.org/W4393158667","https://openalex.org/W4396758634","https://openalex.org/W4396843804","https://openalex.org/W4401863527","https://openalex.org/W4402670912","https://openalex.org/W4405778526","https://openalex.org/W4409145915"],"related_works":[],"abstract_inverted_index":{"Social":[0],"bots":[1],"constitute":[2],"a":[3,50],"substantial":[4],"fraction":[5],"of":[6],"active":[7],"accounts":[8],"on":[9],"digital":[10],"platforms,":[11],"fundamentally":[12],"threatening":[13],"information":[14,25,56,69,91],"authenticity":[15],"and":[16,36,47,88,99],"democratic":[17],"discourse.":[18],"Contemporary":[19],"detection":[20],"methods":[21],"confront":[22],"critical":[23],"limitations:":[24],"imbalance":[26],"across":[27,74,109],"heterogeneous":[28,116],"relations,":[29],"computational":[30],"challenges":[31],"in":[32],"processing":[33],"massive":[34],"neighborhoods,":[35],"inadequate":[37],"multi-scale":[38],"representation":[39,94],"learning.":[40,102],"We":[41],"propose":[42],"HIER":[43,65],"(Heterogeneous":[44],"Information":[45],"Bottleneck":[46],"Expert":[48],"Routing),":[49],"pioneering":[51],"framework":[52],"that":[53,81],"integrates":[54],"variational":[55,68],"theory":[57],"with":[58],"mixture-of-experts":[59,83],"paradigms":[60],"for":[61,71,115],"social":[62,117],"network":[63],"analysis.":[64],"introduces":[66],"relation-aware":[67],"bottleneck":[70],"optimal":[72],"compression":[73],"relationship":[75],"types,":[76],"dynamic":[77],"sparse":[78],"expert":[79],"routing":[80],"extends":[82],"to":[84],"edge-level":[85],"graph":[86],"processing,":[87],"dual-scale":[89],"mutual":[90],"maximization":[92],"enhancing":[93],"discriminability":[95],"through":[96],"neighborhood":[97],"consistency":[98],"graph-level":[100],"contrastive":[101],"Experimental":[103],"validation":[104],"demonstrates":[105],"HIER's":[106],"superior":[107],"performance":[108],"real-world":[110],"datasets,":[111],"establishing":[112],"new":[113],"benchmarks":[114],"bot":[118],"detection.":[119]},"counts_by_year":[],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2026-01-14T00:00:00"}
