{"id":"https://openalex.org/W2033597969","doi":"https://doi.org/10.1145/1639714.1639797","title":"A spatial model for collaborative filtering of comments in an online discussion forum","display_name":"A spatial model for collaborative filtering of comments in an online discussion forum","publication_year":2009,"publication_date":"2009-10-23","ids":{"openalex":"https://openalex.org/W2033597969","doi":"https://doi.org/10.1145/1639714.1639797","mag":"2033597969"},"language":"en","primary_location":{"id":"doi:10.1145/1639714.1639797","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1639714.1639797","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the third ACM conference on Recommender systems","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/A5015194128","display_name":"Ephrat Bitton","orcid":null},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Ephrat Bitton","raw_affiliation_strings":["University of California, Berkeley, Berkeley, CA, USA","University of California, Berkeley, Berkeley, CA USA"],"affiliations":[{"raw_affiliation_string":"University of California, Berkeley, Berkeley, CA, USA","institution_ids":["https://openalex.org/I95457486"]},{"raw_affiliation_string":"University of California, Berkeley, Berkeley, CA USA","institution_ids":["https://openalex.org/I95457486"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5015194128"],"corresponding_institution_ids":["https://openalex.org/I95457486"],"apc_list":null,"apc_paid":null,"fwci":1.4806,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.87986566,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"393","last_page":"396"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11644","display_name":"Spam and Phishing Detection","score":0.9990000128746033,"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"}},"topics":[{"id":"https://openalex.org/T11644","display_name":"Spam and Phishing Detection","score":0.9990000128746033,"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/T10742","display_name":"Peer-to-Peer Network Technologies","score":0.9979000091552734,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T10456","display_name":"Multi-Agent Systems and Negotiation","score":0.9969000220298767,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.752842366695404},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7360329627990723},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.6318092942237854},{"id":"https://openalex.org/keywords/weighting","display_name":"Weighting","score":0.6264833211898804},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.5888106226921082},{"id":"https://openalex.org/keywords/space","display_name":"Space (punctuation)","score":0.5674839615821838},{"id":"https://openalex.org/keywords/test","display_name":"Test (biology)","score":0.557112455368042},{"id":"https://openalex.org/keywords/data-science","display_name":"Data science","score":0.434698224067688},{"id":"https://openalex.org/keywords/online-discussion","display_name":"Online discussion","score":0.41226810216903687},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.41141822934150696},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.3225151598453522}],"concepts":[{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.752842366695404},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7360329627990723},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.6318092942237854},{"id":"https://openalex.org/C183115368","wikidata":"https://www.wikidata.org/wiki/Q856577","display_name":"Weighting","level":2,"score":0.6264833211898804},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.5888106226921082},{"id":"https://openalex.org/C2778572836","wikidata":"https://www.wikidata.org/wiki/Q380933","display_name":"Space (punctuation)","level":2,"score":0.5674839615821838},{"id":"https://openalex.org/C2777267654","wikidata":"https://www.wikidata.org/wiki/Q3519023","display_name":"Test (biology)","level":2,"score":0.557112455368042},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.434698224067688},{"id":"https://openalex.org/C2780656832","wikidata":"https://www.wikidata.org/wiki/Q796573","display_name":"Online discussion","level":2,"score":0.41226810216903687},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.41141822934150696},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.3225151598453522},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","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},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/1639714.1639797","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1639714.1639797","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the third ACM conference on Recommender systems","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W348384746","https://openalex.org/W1546650522","https://openalex.org/W1764421085","https://openalex.org/W2065213477","https://openalex.org/W2097726984","https://openalex.org/W2114822471","https://openalex.org/W2115629999","https://openalex.org/W2128765029","https://openalex.org/W2142067900","https://openalex.org/W2143450308","https://openalex.org/W2157334746","https://openalex.org/W2167917621","https://openalex.org/W2200943687","https://openalex.org/W2282950774","https://openalex.org/W3023222102","https://openalex.org/W6611947346"],"related_works":["https://openalex.org/W2772628444","https://openalex.org/W1484355083","https://openalex.org/W2735929803","https://openalex.org/W4220714703","https://openalex.org/W3008845055","https://openalex.org/W2098758514","https://openalex.org/W2170391450","https://openalex.org/W4376854386","https://openalex.org/W2202724490","https://openalex.org/W2508671622"],"abstract_inverted_index":{"This":[0],"extended":[1],"abstract":[2],"presents":[3],"a":[4,22,48,56,113,137],"new":[5,114],"spatial":[6],"model":[7,57,89,107],"for":[8,58],"collaboratively":[9],"recommending":[10],"compelling":[11,151],"comments":[12,35,109,152],"in":[13,44,110,131,143],"an":[14],"online":[15,115],"discussion":[16,116],"forum":[17],"that":[18,36,64,118],"promote":[19,34],"consensus":[20],"among":[21],"diverse":[23],"group":[24],"of":[25,94,133,139],"users.":[26],"In":[27],"this":[28],"application":[29],"our":[30],"goal":[31],"is":[32,47],"to":[33,50,68,75,97,121,128],"are":[37,146,153],"rated":[38],"highly":[39],"by":[40,99],"dissimilar":[41],"users,":[42],"which":[43],"some":[45],"sense":[46],"dual":[49],"traditional":[51],"recommender":[52],"problems.":[53],"We":[54],"propose":[55],"weighting":[59],"and":[60,80,102],"aggregating":[61],"comment":[62],"ratings":[63,70,101],"gives":[65],"greater":[66],"influence":[67],"positive":[69],"from":[71],"users":[72,120,130],"who":[73],"tend":[74],"disagree":[76],"with":[77,84,126,155],"the":[78,91,106,144],"commenter,":[79],"we":[81],"compare":[82],"it":[83],"various":[85],"alternate":[86],"methods.":[87],"The":[88],"has":[90],"added":[92],"benefit":[93],"being":[95],"resistant":[96],"manipulation":[98],"false":[100],"sybil":[103],"attacks.We":[104],"test":[105],"on":[108,136],"Opinion":[111],"Space,":[112],"tool":[117],"allows":[119],"visualize":[122],"where":[123,149],"they":[124],"stand":[125],"respect":[127],"other":[129],"terms":[132],"their":[134],"opinions":[135],"set":[138],"controversial":[140],"propositions.":[141],"Comments":[142],"system":[145],"recommended":[147],"visually,":[148],"more":[150],"emphasized":[154],"larger":[156],"sizes.":[157]},"counts_by_year":[{"year":2019,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}