{"id":"https://openalex.org/W4226400119","doi":"https://doi.org/10.1145/3498851.3498940","title":"Prediction of Nikkei VI increase for reducing investment risk using Yahoo! JAPAN stock BBS","display_name":"Prediction of Nikkei VI increase for reducing investment risk using Yahoo! JAPAN stock BBS","publication_year":2021,"publication_date":"2021-12-14","ids":{"openalex":"https://openalex.org/W4226400119","doi":"https://doi.org/10.1145/3498851.3498940"},"language":"en","primary_location":{"id":"doi:10.1145/3498851.3498940","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3498851.3498940","pdf_url":null,"source":{"id":"https://openalex.org/S4363608074","display_name":"IEEE/WIC/ACM International Conference on Web Intelligence","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE/WIC/ACM International Conference on Web Intelligence","raw_type":"proceedings-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/A5104112690","display_name":"Kentaro Ueda","orcid":null},"institutions":[{"id":"https://openalex.org/I75917431","display_name":"Nara Institute of Science and Technology","ror":"https://ror.org/05bhada84","country_code":"JP","type":"education","lineage":["https://openalex.org/I75917431"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Kentaro Ueda","raw_affiliation_strings":["Nara Institute of Science and Technology, Japan"],"affiliations":[{"raw_affiliation_string":"Nara Institute of Science and Technology, Japan","institution_ids":["https://openalex.org/I75917431"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044583829","display_name":"Kodai Sasaki","orcid":null},"institutions":[{"id":"https://openalex.org/I75917431","display_name":"Nara Institute of Science and Technology","ror":"https://ror.org/05bhada84","country_code":"JP","type":"education","lineage":["https://openalex.org/I75917431"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kodai Sasaki","raw_affiliation_strings":["Nara Institute of Science and Technology, Japan"],"affiliations":[{"raw_affiliation_string":"Nara Institute of Science and Technology, Japan","institution_ids":["https://openalex.org/I75917431"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005700675","display_name":"Hirohiko Suwa","orcid":"https://orcid.org/0000-0002-8519-3352"},"institutions":[{"id":"https://openalex.org/I75917431","display_name":"Nara Institute of Science and Technology","ror":"https://ror.org/05bhada84","country_code":"JP","type":"education","lineage":["https://openalex.org/I75917431"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hirohiko Suwa","raw_affiliation_strings":["Nara Institute of Science and Technology, Japan"],"affiliations":[{"raw_affiliation_string":"Nara Institute of Science and Technology, Japan","institution_ids":["https://openalex.org/I75917431"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102401056","display_name":"Yuki Ogawa","orcid":"https://orcid.org/0009-0000-1028-8317"},"institutions":[{"id":"https://openalex.org/I135768898","display_name":"Ritsumeikan University","ror":"https://ror.org/0197nmd03","country_code":"JP","type":"education","lineage":["https://openalex.org/I135768898","https://openalex.org/I4390039241"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuki Ogawa","raw_affiliation_strings":["Ritsumeikan University, Japan"],"affiliations":[{"raw_affiliation_string":"Ritsumeikan University, Japan","institution_ids":["https://openalex.org/I135768898"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017312005","display_name":"Eiichi Umehara","orcid":"https://orcid.org/0009-0000-3704-0477"},"institutions":[{"id":"https://openalex.org/I127090209","display_name":"Niigata University of International and Information Studies","ror":"https://ror.org/03nskz175","country_code":"JP","type":"education","lineage":["https://openalex.org/I127090209"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Eiichi Umehara","raw_affiliation_strings":["Niigata University of International and Information Studies, Japan"],"affiliations":[{"raw_affiliation_string":"Niigata University of International and Information Studies, Japan","institution_ids":["https://openalex.org/I127090209"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5030387579","display_name":"Tatsuo Yamashita","orcid":"https://orcid.org/0009-0007-2236-9633"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Tatsuo Yamashita","raw_affiliation_strings":["Yahoo Japan Corporation, Japan"],"affiliations":[{"raw_affiliation_string":"Yahoo Japan Corporation, Japan","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043621466","display_name":"Kota Tsubouchi","orcid":"https://orcid.org/0000-0002-7753-8939"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Kota Tsubouchi","raw_affiliation_strings":["Yahoo Japan Corporation, Japan"],"affiliations":[{"raw_affiliation_string":"Yahoo Japan Corporation, Japan","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5019740585","display_name":"Keiichi Yasumoto","orcid":"https://orcid.org/0000-0003-1579-3237"},"institutions":[{"id":"https://openalex.org/I75917431","display_name":"Nara Institute of Science and Technology","ror":"https://ror.org/05bhada84","country_code":"JP","type":"education","lineage":["https://openalex.org/I75917431"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Keiichi Yasumoto","raw_affiliation_strings":["Nara Institute of Science and Technology, Japan"],"affiliations":[{"raw_affiliation_string":"Nara Institute of Science and Technology, Japan","institution_ids":["https://openalex.org/I75917431"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5104112690"],"corresponding_institution_ids":["https://openalex.org/I75917431"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.30846485,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":null,"issue":null,"first_page":"126","last_page":"133"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11326","display_name":"Stock Market Forecasting Methods","score":0.9976999759674072,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T11326","display_name":"Stock Market Forecasting Methods","score":0.9976999759674072,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11490","display_name":"Hydrological Forecasting Using AI","score":0.9753999710083008,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11052","display_name":"Energy Load and Power Forecasting","score":0.9535999894142151,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/stock","display_name":"Stock (firearms)","score":0.6873435378074646},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.46148696541786194},{"id":"https://openalex.org/keywords/investment","display_name":"Investment (military)","score":0.4567923843860626},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4065750241279602},{"id":"https://openalex.org/keywords/metallurgy","display_name":"Metallurgy","score":0.10443910956382751},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.0813157856464386}],"concepts":[{"id":"https://openalex.org/C204036174","wikidata":"https://www.wikidata.org/wiki/Q909380","display_name":"Stock (firearms)","level":2,"score":0.6873435378074646},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.46148696541786194},{"id":"https://openalex.org/C27548731","wikidata":"https://www.wikidata.org/wiki/Q88272","display_name":"Investment (military)","level":3,"score":0.4567923843860626},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4065750241279602},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.10443910956382751},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0813157856464386},{"id":"https://openalex.org/C94625758","wikidata":"https://www.wikidata.org/wiki/Q7163","display_name":"Politics","level":2,"score":0.0},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3498851.3498940","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3498851.3498940","pdf_url":null,"source":{"id":"https://openalex.org/S4363608074","display_name":"IEEE/WIC/ACM International Conference on Web Intelligence","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE/WIC/ACM International Conference on Web Intelligence","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Decent work and economic growth","score":0.44999998807907104,"id":"https://metadata.un.org/sdg/8"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W851401968","https://openalex.org/W2140457324","https://openalex.org/W2171468534","https://openalex.org/W2209610041","https://openalex.org/W2784061767","https://openalex.org/W2900880305","https://openalex.org/W2945699837","https://openalex.org/W2952277250","https://openalex.org/W2964413206","https://openalex.org/W3004884179","https://openalex.org/W3034478396","https://openalex.org/W3035389441","https://openalex.org/W3092328701","https://openalex.org/W3126053622","https://openalex.org/W4231546411","https://openalex.org/W4239296949","https://openalex.org/W4243973894"],"related_works":["https://openalex.org/W1209867","https://openalex.org/W5133377","https://openalex.org/W1199368","https://openalex.org/W1363150","https://openalex.org/W196929","https://openalex.org/W9729784","https://openalex.org/W7000","https://openalex.org/W1544043","https://openalex.org/W1343639","https://openalex.org/W5775206"],"abstract_inverted_index":{"In":[0,76],"stock":[1,101],"investment,":[2],"it":[3],"is":[4,22],"important":[5],"to":[6,13,61],"predict":[7],"future":[8,33,50],"market":[9],"fluctuations":[10],"in":[11,40,88,104,114],"order":[12],"reduce":[14,62],"risk.":[15,64],"The":[16],"Nikkei":[17,90],"225":[18,91],"Volatility":[19],"Index":[20],"(VI)":[21],"a":[23,82,120,125,131],"measure":[24],"of":[25,28,31,34,51,73,84,98,117,122,137],"the":[26,29,32,35,49,52,69,74,77,86,89,95,99,115],"expectations":[27],"investors":[30,45],"Japanese":[36],"market.":[37],"A":[38],"rise":[39,57],"this":[41,56],"index":[42],"indicates":[43],"that":[44],"are":[46],"concerned":[47],"about":[48],"market,":[53],"and":[54,71,111],"predicting":[55,85],"may":[58],"be":[59],"used":[60],"investment":[63],"Social":[65],"media":[66,97],"posts":[67],"contain":[68],"opinions":[70],"feelings":[72],"posters.":[75],"present":[78],"study,":[79],"we":[80,129],"proposed":[81],"means":[83],"increase":[87],"VI":[92],"by":[93],"analyzing":[94],"social":[96],"largest":[100],"trading":[102],"website":[103],"Japan,":[105],"\u201dYahoo!":[106],"Japan":[107],"Stock":[108],"Message":[109],"Board,\u201d":[110],"capturing":[112],"changes":[113],"topics":[116],"discussion.":[118],"As":[119],"result":[121],"evaluation":[123],"over":[124],"long":[126],"validation":[127],"period,":[128],"developed":[130],"prediction":[132],"model":[133],"with":[134],"an":[135],"F1-measure":[136],"0.26.":[138]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
