{"id":"https://openalex.org/W1019851549","doi":"https://doi.org/10.3233/kes-150304","title":"Exploratory activity search","display_name":"Exploratory activity search","publication_year":2015,"publication_date":"2015-06-09","ids":{"openalex":"https://openalex.org/W1019851549","doi":"https://doi.org/10.3233/kes-150304","mag":"1019851549"},"language":"en","primary_location":{"id":"doi:10.3233/kes-150304","is_oa":false,"landing_page_url":"https://doi.org/10.3233/kes-150304","pdf_url":null,"source":{"id":"https://openalex.org/S133764092","display_name":"International Journal of Knowledge-based and Intelligent Engineering Systems","issn_l":"1327-2314","issn":["1327-2314","1875-8827"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310318577","host_organization_name":"IOS Press","host_organization_lineage":["https://openalex.org/P4310318577"],"host_organization_lineage_names":["IOS Press"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Knowledge-based and Intelligent Engineering 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/A5029670252","display_name":"Yusuke Fukazawa","orcid":"https://orcid.org/0000-0001-9834-9339"},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Yusuke Fukazawa","raw_affiliation_strings":["NTT DOCOMO, Inc., Yokosuka, Kanagawa, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NTT DOCOMO, Inc., Yokosuka, Kanagawa, Japan","institution_ids":["https://openalex.org/I2251713219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005971274","display_name":"Eleftherios Karapetsas","orcid":null},"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"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Eleftherios Karapetsas","raw_affiliation_strings":["The University of Tokyo, Kashiwa, Chiba, Japan","The University of Tokyo, Kashiwa, Chiba, Japan#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The University of Tokyo, Kashiwa, Chiba, Japan","institution_ids":["https://openalex.org/I74801974"]},{"raw_affiliation_string":"The University of Tokyo, Kashiwa, Chiba, Japan#TAB#","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002554183","display_name":"Dandan Zhu","orcid":"https://orcid.org/0000-0003-0329-6321"},"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"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Dandan Zhu","raw_affiliation_strings":["The University of Tokyo, Kashiwa, Chiba, Japan","The University of Tokyo, Kashiwa, Chiba, Japan#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The University of Tokyo, Kashiwa, Chiba, Japan","institution_ids":["https://openalex.org/I74801974"]},{"raw_affiliation_string":"The University of Tokyo, Kashiwa, Chiba, Japan#TAB#","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5037920030","display_name":"Jun Ota","orcid":"https://orcid.org/0000-0002-4738-2275"},"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"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Jun Ota","raw_affiliation_strings":["The University of Tokyo, Kashiwa, Chiba, Japan","The University of Tokyo, Kashiwa, Chiba, Japan#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The University of Tokyo, Kashiwa, Chiba, Japan","institution_ids":["https://openalex.org/I74801974"]},{"raw_affiliation_string":"The University of Tokyo, Kashiwa, Chiba, Japan#TAB#","institution_ids":["https://openalex.org/I74801974"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5029670252"],"corresponding_institution_ids":["https://openalex.org/I2251713219"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.01039709,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"19","issue":"1","first_page":"15","last_page":"25"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T11106","display_name":"Data Management and Algorithms","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T10203","display_name":"Recommender Systems and Techniques","score":0.9984999895095825,"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"}},{"id":"https://openalex.org/T12016","display_name":"Web Data Mining and Analysis","score":0.9975000023841858,"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/serendipity","display_name":"Serendipity","score":0.9115503430366516},{"id":"https://openalex.org/keywords/novelty","display_name":"Novelty","score":0.8621888160705566},{"id":"https://openalex.org/keywords/ranking","display_name":"Ranking (information retrieval)","score":0.7384123802185059},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6661537289619446},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.5871825218200684},{"id":"https://openalex.org/keywords/exploratory-search","display_name":"Exploratory search","score":0.5344620943069458},{"id":"https://openalex.org/keywords/search-engine","display_name":"Search engine","score":0.5158059597015381},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.48730242252349854},{"id":"https://openalex.org/keywords/query-expansion","display_name":"Query expansion","score":0.4472912549972534},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.4238268733024597},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.39392611384391785},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.3347553014755249}],"concepts":[{"id":"https://openalex.org/C2779119418","wikidata":"https://www.wikidata.org/wiki/Q166039","display_name":"Serendipity","level":2,"score":0.9115503430366516},{"id":"https://openalex.org/C2778738651","wikidata":"https://www.wikidata.org/wiki/Q16546687","display_name":"Novelty","level":2,"score":0.8621888160705566},{"id":"https://openalex.org/C189430467","wikidata":"https://www.wikidata.org/wiki/Q7293293","display_name":"Ranking (information retrieval)","level":2,"score":0.7384123802185059},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6661537289619446},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.5871825218200684},{"id":"https://openalex.org/C2777866876","wikidata":"https://www.wikidata.org/wiki/Q5421358","display_name":"Exploratory search","level":2,"score":0.5344620943069458},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.5158059597015381},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.48730242252349854},{"id":"https://openalex.org/C99016210","wikidata":"https://www.wikidata.org/wiki/Q5488129","display_name":"Query expansion","level":2,"score":0.4472912549972534},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.4238268733024597},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.39392611384391785},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.3347553014755249},{"id":"https://openalex.org/C27206212","wikidata":"https://www.wikidata.org/wiki/Q34178","display_name":"Theology","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.3233/kes-150304","is_oa":false,"landing_page_url":"https://doi.org/10.3233/kes-150304","pdf_url":null,"source":{"id":"https://openalex.org/S133764092","display_name":"International Journal of Knowledge-based and Intelligent Engineering Systems","issn_l":"1327-2314","issn":["1327-2314","1875-8827"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310318577","host_organization_name":"IOS Press","host_organization_lineage":["https://openalex.org/P4310318577"],"host_organization_lineage_names":["IOS Press"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Knowledge-based and Intelligent Engineering Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":18,"referenced_works":["https://openalex.org/W33139900","https://openalex.org/W1513457688","https://openalex.org/W1514387421","https://openalex.org/W1562326216","https://openalex.org/W1568834902","https://openalex.org/W1995973744","https://openalex.org/W2016089260","https://openalex.org/W2045453095","https://openalex.org/W2081580037","https://openalex.org/W2090912237","https://openalex.org/W2121591309","https://openalex.org/W2132312916","https://openalex.org/W2142387245","https://openalex.org/W2144420700","https://openalex.org/W2149257407","https://openalex.org/W2163296555","https://openalex.org/W2171475148","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2096359267","https://openalex.org/W1521725692","https://openalex.org/W3008917487","https://openalex.org/W2901901036","https://openalex.org/W3197639690","https://openalex.org/W2026738364","https://openalex.org/W2572349046","https://openalex.org/W2049540727","https://openalex.org/W2160726690","https://openalex.org/W2766474880"],"abstract_inverted_index":{"Real":[0],"world":[1],"activities":[2,33],"can":[3],"be":[4],"found":[5],"all":[6],"around":[7],"the":[8,30,35,43,52,55,67,77,84,89,105],"web.":[9,36],"In":[10],"this":[11,102],"paper,":[12],"we":[13,81],"present":[14],"our":[15],"work":[16],"on":[17],"an":[18],"exploratory":[19],"activity":[20,85],"search":[21,31,86],"system":[22,78,87,107],"that":[23],"is":[24,42,54],"utilizing":[25],"common-sense":[26],"data":[27],"to":[28],"enrich":[29],"for":[32],"in":[34,101,113,118],"Two":[37],"algorithms":[38],"are":[39,64],"proposed.":[40],"One":[41],"weighted":[44],"query":[45,59],"expansion":[46,60],"algorithm":[47,57],"using":[48,58],"Con":[49],"ceptNet,":[50],"and":[51,95,104,115],"other":[53],"ranking":[56],"result":[61],"whose":[62],"weights":[63],"tuned":[65],"by":[66],"genetic":[68],"algorithms.":[69],"Finally,":[70],"a":[71,110],"detailed":[72],"double-blinded":[73],"user":[74],"evaluation":[75],"of":[76,91],"follows,":[79],"where":[80],"simultaneously":[82],"evaluate":[83],"from":[88],"viewpoint":[90],"novelty,":[92],"serendipity,":[93],"usefulness":[94],"interest.":[96],"There":[97],"were":[98],"20":[99],"participants":[100],"evaluation,":[103],"proposed":[106],"has":[108],"shown":[109],"13.4%":[111],"increase":[112,117],"novelty":[114],"11.6%":[116],"serendipity":[119],"when":[120],"compared":[121],"with":[122],"Bing":[123],"search.":[124]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}