{"id":"https://openalex.org/W2118882002","doi":"https://doi.org/10.1007/s10115-010-0283-2","title":"Statistical outlier detection using direct density ratio estimation","display_name":"Statistical outlier detection using direct density ratio estimation","publication_year":2010,"publication_date":"2010-02-09","ids":{"openalex":"https://openalex.org/W2118882002","doi":"https://doi.org/10.1007/s10115-010-0283-2","mag":"2118882002"},"language":"en","primary_location":{"id":"doi:10.1007/s10115-010-0283-2","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10115-010-0283-2","pdf_url":null,"source":{"id":"https://openalex.org/S81770430","display_name":"Knowledge and Information Systems","issn_l":"0219-1377","issn":["0219-1377","0219-3116"],"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":"Knowledge and Information 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/A5071061923","display_name":"Shohei Hido","orcid":null},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]},{"id":"https://openalex.org/I4210145865","display_name":"IBM Research - Tokyo","ror":"https://ror.org/04915qk43","country_code":"JP","type":"facility","lineage":["https://openalex.org/I1341412227","https://openalex.org/I4210114115","https://openalex.org/I4210145865"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Shohei Hido","raw_affiliation_strings":["Department of Systems Science, Graduate School of Informatics, Kyoto University, Kyoto, Japan","IBM Research - Tokyo, Kanagawa, Japan","IBM Research - Tokyo, Kanagawa, Japan and Graduate School of Informatics, Kyoto University, Department of Systems Science, Kyoto, Japan#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Systems Science, Graduate School of Informatics, Kyoto University, Kyoto, Japan","institution_ids":["https://openalex.org/I22299242"]},{"raw_affiliation_string":"IBM Research - Tokyo, Kanagawa, Japan","institution_ids":["https://openalex.org/I4210145865"]},{"raw_affiliation_string":"IBM Research - Tokyo, Kanagawa, Japan and Graduate School of Informatics, Kyoto University, Department of Systems Science, Kyoto, Japan#TAB#","institution_ids":["https://openalex.org/I22299242"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020740517","display_name":"Yuta Tsuboi","orcid":null},"institutions":[{"id":"https://openalex.org/I4210145865","display_name":"IBM Research - Tokyo","ror":"https://ror.org/04915qk43","country_code":"JP","type":"facility","lineage":["https://openalex.org/I1341412227","https://openalex.org/I4210114115","https://openalex.org/I4210145865"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuta Tsuboi","raw_affiliation_strings":["IBM Research - Tokyo, Kanagawa, Japan","IBM Research\u2014Tokyo, Kanagawa, Japan"],"affiliations":[{"raw_affiliation_string":"IBM Research - Tokyo, Kanagawa, Japan","institution_ids":["https://openalex.org/I4210145865"]},{"raw_affiliation_string":"IBM Research\u2014Tokyo, Kanagawa, Japan","institution_ids":["https://openalex.org/I4210145865"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5031707680","display_name":"Hisashi Kashima","orcid":"https://orcid.org/0000-0002-2770-0184"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]},{"id":"https://openalex.org/I4210145865","display_name":"IBM Research - Tokyo","ror":"https://ror.org/04915qk43","country_code":"JP","type":"facility","lineage":["https://openalex.org/I1341412227","https://openalex.org/I4210114115","https://openalex.org/I4210145865"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hisashi Kashima","raw_affiliation_strings":["IBM Research - Tokyo, Kanagawa, Japan","IBM Research - Tokyo, Kanagawa, Japan and The University of Tokyo, Department of Mathematical Informatics, Graduate School of Information Science and Technology, Tokyo, Japan#TAB#"],"affiliations":[{"raw_affiliation_string":"IBM Research - Tokyo, Kanagawa, Japan","institution_ids":["https://openalex.org/I4210145865"]},{"raw_affiliation_string":"IBM Research - Tokyo, Kanagawa, Japan and The University of Tokyo, Department of Mathematical Informatics, Graduate School of Information Science and Technology, Tokyo, Japan#TAB#","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072744508","display_name":"Masashi Sugiyama","orcid":"https://orcid.org/0000-0001-6658-6743"},"institutions":[{"id":"https://openalex.org/I114531698","display_name":"Tokyo Institute of Technology","ror":"https://ror.org/0112mx960","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698"]},{"id":"https://openalex.org/I4210086780","display_name":"Japan Science and Technology Agency","ror":"https://ror.org/00097mb19","country_code":"JP","type":"government","lineage":["https://openalex.org/I4210086780"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masashi Sugiyama","raw_affiliation_strings":["Department of Computer Science, Graduate School of Information Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan","PRESTO, Japan Science and Technology Agency, Kawaguchi, Japan","Tokyo Institute of Technology, Department of Computer Science, Graduate School of Information Science and Engineering, Tokyo, Japan and PRESTO, Japan Science and Technology Agency, Kawaguchi, Japa ...#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, Graduate School of Information Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan","institution_ids":["https://openalex.org/I114531698"]},{"raw_affiliation_string":"PRESTO, Japan Science and Technology Agency, Kawaguchi, Japan","institution_ids":["https://openalex.org/I4210086780"]},{"raw_affiliation_string":"Tokyo Institute of Technology, Department of Computer Science, Graduate School of Information Science and Engineering, Tokyo, Japan and PRESTO, Japan Science and Technology Agency, Kawaguchi, Japa ...#TAB#","institution_ids":["https://openalex.org/I114531698"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5088569462","display_name":"Takafumi Kanamori","orcid":"https://orcid.org/0000-0001-6878-5850"},"institutions":[{"id":"https://openalex.org/I60134161","display_name":"Nagoya University","ror":"https://ror.org/04chrp450","country_code":"JP","type":"education","lineage":["https://openalex.org/I60134161"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takafumi Kanamori","raw_affiliation_strings":["Department of Computer Science and Mathematical Informatics, Graduate School of Information Science, Nagoya University, Nagoya, Japan","Nagoya University, Department of Computer Science and Mathematical Informatics, Graduate School of Information Science, Nagoya, Japan#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science and Mathematical Informatics, Graduate School of Information Science, Nagoya University, Nagoya, Japan","institution_ids":["https://openalex.org/I60134161"]},{"raw_affiliation_string":"Nagoya University, Department of Computer Science and Mathematical Informatics, Graduate School of Information Science, Nagoya, Japan#TAB#","institution_ids":["https://openalex.org/I60134161"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5071061923"],"corresponding_institution_ids":["https://openalex.org/I22299242","https://openalex.org/I4210145865"],"apc_list":{"value":2290,"currency":"EUR","value_usd":2890},"apc_paid":null,"fwci":24.2052,"has_fulltext":false,"cited_by_count":168,"citation_normalized_percentile":{"value":0.99580988,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":95,"max":100},"biblio":{"volume":"26","issue":"2","first_page":"309","last_page":"336"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11512","display_name":"Anomaly Detection Techniques and Applications","score":0.9998999834060669,"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/T11512","display_name":"Anomaly Detection Techniques and Applications","score":0.9998999834060669,"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/T11220","display_name":"Water Systems and Optimization","score":0.9955000281333923,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10876","display_name":"Fault Detection and Control Systems","score":0.9914000034332275,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/outlier","display_name":"Outlier","score":0.7320188283920288},{"id":"https://openalex.org/keywords/anomaly-detection","display_name":"Anomaly detection","score":0.699103593826294},{"id":"https://openalex.org/keywords/kernel-density-estimation","display_name":"Kernel density estimation","score":0.6647379398345947},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6098207831382751},{"id":"https://openalex.org/keywords/regularization","display_name":"Regularization (linguistics)","score":0.5958876013755798},{"id":"https://openalex.org/keywords/benchmark","display_name":"Benchmark (surveying)","score":0.5136436820030212},{"id":"https://openalex.org/keywords/kernel","display_name":"Kernel (algebra)","score":0.47496268153190613},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.46046754717826843},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.44826728105545044},{"id":"https://openalex.org/keywords/statistical-hypothesis-testing","display_name":"Statistical hypothesis testing","score":0.42889273166656494},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.4223533868789673},{"id":"https://openalex.org/keywords/density-estimation","display_name":"Density estimation","score":0.41187554597854614},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4074927568435669},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.3854166865348816},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3783382177352905},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3632102608680725},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.3298138380050659}],"concepts":[{"id":"https://openalex.org/C79337645","wikidata":"https://www.wikidata.org/wiki/Q779824","display_name":"Outlier","level":2,"score":0.7320188283920288},{"id":"https://openalex.org/C739882","wikidata":"https://www.wikidata.org/wiki/Q3560506","display_name":"Anomaly detection","level":2,"score":0.699103593826294},{"id":"https://openalex.org/C71134354","wikidata":"https://www.wikidata.org/wiki/Q458825","display_name":"Kernel density estimation","level":3,"score":0.6647379398345947},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6098207831382751},{"id":"https://openalex.org/C2776135515","wikidata":"https://www.wikidata.org/wiki/Q17143721","display_name":"Regularization (linguistics)","level":2,"score":0.5958876013755798},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.5136436820030212},{"id":"https://openalex.org/C74193536","wikidata":"https://www.wikidata.org/wiki/Q574844","display_name":"Kernel (algebra)","level":2,"score":0.47496268153190613},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.46046754717826843},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.44826728105545044},{"id":"https://openalex.org/C87007009","wikidata":"https://www.wikidata.org/wiki/Q210832","display_name":"Statistical hypothesis testing","level":2,"score":0.42889273166656494},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.4223533868789673},{"id":"https://openalex.org/C189508267","wikidata":"https://www.wikidata.org/wiki/Q17088227","display_name":"Density estimation","level":3,"score":0.41187554597854614},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4074927568435669},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.3854166865348816},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3783382177352905},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3632102608680725},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.3298138380050659},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.0},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.0},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.0},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1007/s10115-010-0283-2","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10115-010-0283-2","pdf_url":null,"source":{"id":"https://openalex.org/S81770430","display_name":"Knowledge and Information Systems","issn_l":"0219-1377","issn":["0219-1377","0219-3116"],"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":"Knowledge and Information Systems","raw_type":"journal-article"},{"id":"pmh:oai:t2r2.star.titech.ac.jp:50098087","is_oa":false,"landing_page_url":"http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100599748","pdf_url":null,"source":{"id":"https://openalex.org/S4377196385","display_name":"Tokyo Tech Research Repository (Tokyo Institute of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I114531698","host_organization_name":"Tokyo Institute of Technology","host_organization_lineage":["https://openalex.org/I114531698"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Journal Article"},{"id":"pmh:oai:t2r2.star.titech.ac.jp:50134841","is_oa":false,"landing_page_url":"http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100619581","pdf_url":null,"source":{"id":"https://openalex.org/S4377196385","display_name":"Tokyo Tech Research Repository (Tokyo Institute of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I114531698","host_organization_name":"Tokyo Institute of Technology","host_organization_lineage":["https://openalex.org/I114531698"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Conference Paper"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320318019","display_name":"Asian Office of Aerospace Research and Development","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":86,"referenced_works":["https://openalex.org/W10719664","https://openalex.org/W47762396","https://openalex.org/W117883395","https://openalex.org/W126266486","https://openalex.org/W129077257","https://openalex.org/W189742998","https://openalex.org/W638544165","https://openalex.org/W1540007258","https://openalex.org/W1567676515","https://openalex.org/W1596600792","https://openalex.org/W1607158807","https://openalex.org/W1647376582","https://openalex.org/W1963661053","https://openalex.org/W1964274671","https://openalex.org/W1966026565","https://openalex.org/W1969204685","https://openalex.org/W1969481231","https://openalex.org/W1970088130","https://openalex.org/W1991959600","https://openalex.org/W2002748013","https://openalex.org/W2005112370","https://openalex.org/W2026386069","https://openalex.org/W2026413914","https://openalex.org/W2032536435","https://openalex.org/W2034368206","https://openalex.org/W2042179218","https://openalex.org/W2044688385","https://openalex.org/W2045064676","https://openalex.org/W2062291443","https://openalex.org/W2063978378","https://openalex.org/W2070845047","https://openalex.org/W2081850149","https://openalex.org/W2083505311","https://openalex.org/W2085079992","https://openalex.org/W2088042731","https://openalex.org/W2091319256","https://openalex.org/W2096501322","https://openalex.org/W2098766654","https://openalex.org/W2099111195","https://openalex.org/W2100983309","https://openalex.org/W2102689555","https://openalex.org/W2103851188","https://openalex.org/W2104267382","https://openalex.org/W2104410989","https://openalex.org/W2109531142","https://openalex.org/W2112483442","https://openalex.org/W2114338449","https://openalex.org/W2114915142","https://openalex.org/W2118543192","https://openalex.org/W2118818347","https://openalex.org/W2119381450","https://openalex.org/W2119410311","https://openalex.org/W2123168458","https://openalex.org/W2131584489","https://openalex.org/W2131904035","https://openalex.org/W2132870739","https://openalex.org/W2133958955","https://openalex.org/W2134510195","https://openalex.org/W2136362180","https://openalex.org/W2136681493","https://openalex.org/W2137130182","https://openalex.org/W2140177290","https://openalex.org/W2144182447","https://openalex.org/W2148603752","https://openalex.org/W2155653793","https://openalex.org/W2157963336","https://openalex.org/W2160095661","https://openalex.org/W2162651021","https://openalex.org/W2169075655","https://openalex.org/W2169269897","https://openalex.org/W2170935389","https://openalex.org/W2171010205","https://openalex.org/W2172237138","https://openalex.org/W2181470043","https://openalex.org/W2255883267","https://openalex.org/W2294971837","https://openalex.org/W2296319761","https://openalex.org/W2597289420","https://openalex.org/W2798909945","https://openalex.org/W2811380766","https://openalex.org/W3023786531","https://openalex.org/W4229739412","https://openalex.org/W4235764643","https://openalex.org/W4250589301","https://openalex.org/W4285719527","https://openalex.org/W6621238143"],"related_works":["https://openalex.org/W2499612753","https://openalex.org/W3111802945","https://openalex.org/W2946096271","https://openalex.org/W2295423552","https://openalex.org/W3107369729","https://openalex.org/W2799907871","https://openalex.org/W1482149696","https://openalex.org/W2977337932","https://openalex.org/W2406935090","https://openalex.org/W4296626987"],"abstract_inverted_index":null,"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":7},{"year":2022,"cited_by_count":10},{"year":2021,"cited_by_count":10},{"year":2020,"cited_by_count":10},{"year":2019,"cited_by_count":17},{"year":2018,"cited_by_count":9},{"year":2017,"cited_by_count":8},{"year":2016,"cited_by_count":12},{"year":2015,"cited_by_count":15},{"year":2014,"cited_by_count":12},{"year":2013,"cited_by_count":16},{"year":2012,"cited_by_count":18}],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}
