{"id":"https://openalex.org/W2026713428","doi":"https://doi.org/10.1109/coginfocom.2013.6719277","title":"Using Robust PCA to estimate regional characteristics of language use from geo-tagged Twitter messages","display_name":"Using Robust PCA to estimate regional characteristics of language use from geo-tagged Twitter messages","publication_year":2013,"publication_date":"2013-12-01","ids":{"openalex":"https://openalex.org/W2026713428","doi":"https://doi.org/10.1109/coginfocom.2013.6719277","mag":"2026713428"},"language":"en","primary_location":{"id":"doi:10.1109/coginfocom.2013.6719277","doi":"https://doi.org/10.1109/coginfocom.2013.6719277","is_oa":false,"landing_page_url":"https://doi.org/10.1109/coginfocom.2013.6719277","pdf_url":null,"source":{"id":"https://openalex.org/S4306418657","display_name":"IEEE International Conference on Cognitive Infocommunications","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"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":"2013 IEEE 4th International Conference on Cognitive Infocommunications (CogInfoCom)","raw_type":"proceedings-article"},"volume":null,"type":"conference-paper","is_traditional":true,"indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/1311.1169","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5112456168","display_name":"D\u00e1niel Kondor","orcid":"https://orcid.org/0000-0003-3720-7462","observed_orcids":["https://orcid.org/0000-0003-3720-7462"]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Daniel Kondor","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059584176","display_name":"Istv\u00e1n Csabai","orcid":"https://orcid.org/0000-0001-9232-9898","observed_orcids":["https://orcid.org/0000-0001-9232-9898"]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Istvan Csabai","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045949364","display_name":"L\u00e1szl\u00f3 Dobos","orcid":"https://orcid.org/0000-0001-7679-9478","observed_orcids":["https://orcid.org/0000-0001-7679-9478"]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Laszlo Dobos","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075814285","display_name":"J\u00e1nos Sz\u00fcle","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Janos Szule","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081994532","display_name":"Norbert Barankai","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Norbert Barankai","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014484716","display_name":"Tam\u00e1s Hanyecz","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Tamas Hanyecz","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063659303","display_name":"Tam\u00e1s Seb\u0151k","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Tamas Sebok","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009382413","display_name":"Zs\u00f3fia Kallus","orcid":"https://orcid.org/0000-0002-5270-1891","observed_orcids":["https://orcid.org/0000-0002-5270-1891"]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Zsofia Kallus","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5019808661","display_name":"G\u00e1bor Vattay","orcid":"https://orcid.org/0000-0002-0919-9429","observed_orcids":["https://orcid.org/0000-0002-0919-9429"]},"institutions":[{"id":"https://openalex.org/I106118109","display_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","ror":"https://ror.org/01jsq2704","country_code":"HU","type":"education","lineage":["https://openalex.org/I106118109"]}],"countries":["HU"],"is_corresponding":false,"raw_author_name":"Gabor Vattay","raw_affiliation_strings":["Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics of Complex Systems, E\u00f6tv\u00f6s Lor\u00e1nd University, Budapest, Hungary","institution_ids":["https://openalex.org/I106118109"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I106118109"],"apc_list":null,"apc_paid":null,"fwci":1.1331,"has_fulltext":true,"cited_by_count":14,"citation_normalized_percentile":{"value":0.77697772,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"393","last_page":"398"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12380","display_name":"Authorship Attribution and Profiling","score":0.28610000014305115,"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/T12380","display_name":"Authorship Attribution and Profiling","score":0.28610000014305115,"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/T13910","display_name":"Computational and Text Analysis Methods","score":0.24079999327659607,"subfield":{"id":"https://openalex.org/subfields/3300","display_name":"General Social Sciences"},"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/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.20100000500679016,"subfield":{"id":"https://openalex.org/subfields/3313","display_name":"Transportation"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/robust-pca","display_name":"robust principal component analysis","score":0.8870000243186951},{"id":"https://openalex.org/keywords/regional-language-variation","display_name":"regional language variation","score":0.6470000147819519},{"id":"https://openalex.org/keywords/geotagged-tweets","display_name":"geo-tagged tweets","score":0.859000027179718},{"id":"https://openalex.org/keywords/twitter","display_name":"Twitter","score":0.9089999794960022},{"id":"https://openalex.org/keywords/word-frequency","display_name":"word frequency","score":0.6549999713897705},{"id":"https://openalex.org/keywords/geospatial-features","display_name":"geospatial features","score":0.7110000252723694},{"id":"https://openalex.org/keywords/social-media","display_name":"social media","score":0.6380000114440918},{"id":"https://openalex.org/keywords/outlier-removal","display_name":"outlier removal","score":0.4749999940395355},{"id":"https://openalex.org/keywords/low-dimensional-systems","display_name":"low-dimensional systems","score":0.5109999775886536}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7373200058937073},{"id":"https://openalex.org/C518677369","wikidata":"https://www.wikidata.org/wiki/Q202833","display_name":"Social media","level":2,"score":0.7129388451576233},{"id":"https://openalex.org/C143275388","wikidata":"https://www.wikidata.org/wiki/Q92438","display_name":"Microblogging","level":3,"score":0.693036675453186},{"id":"https://openalex.org/C2777801307","wikidata":"https://www.wikidata.org/wiki/Q2088390","display_name":"Spelling","level":2,"score":0.6424869894981384},{"id":"https://openalex.org/C9770341","wikidata":"https://www.wikidata.org/wiki/Q1938983","display_name":"Geospatial analysis","level":2,"score":0.5924789309501648},{"id":"https://openalex.org/C79337645","wikidata":"https://www.wikidata.org/wiki/Q779824","display_name":"Outlier","level":2,"score":0.5679754614830017},{"id":"https://openalex.org/C27438332","wikidata":"https://www.wikidata.org/wiki/Q2873","display_name":"Principal component analysis","level":2,"score":0.5322359204292297},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.5251633524894714},{"id":"https://openalex.org/C2780378061","wikidata":"https://www.wikidata.org/wiki/Q25351891","display_name":"Service (business)","level":2,"score":0.45254844427108765},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.43858933448791504},{"id":"https://openalex.org/C90805587","wikidata":"https://www.wikidata.org/wiki/Q10944557","display_name":"Word (group theory)","level":2,"score":0.4302443861961365},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3789592683315277},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.3757706880569458},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.3411427140235901},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.20306581258773804},{"id":"https://openalex.org/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.09865862131118774},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"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/C136264566","wikidata":"https://www.wikidata.org/wiki/Q159810","display_name":"Economy","level":1,"score":0.0},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0}],"mesh":[],"locations_count":6,"locations":[{"id":"doi:10.1109/coginfocom.2013.6719277","doi":"https://doi.org/10.1109/coginfocom.2013.6719277","is_oa":false,"landing_page_url":"https://doi.org/10.1109/coginfocom.2013.6719277","pdf_url":null,"source":{"id":"https://openalex.org/S4306418657","display_name":"IEEE International Conference on Cognitive Infocommunications","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"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":"2013 IEEE 4th International Conference on Cognitive Infocommunications (CogInfoCom)","raw_type":"proceedings-article"},{"id":"pmh:oai:arXiv.org:1311.1169","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/1311.1169","pdf_url":"https://arxiv.org/pdf/1311.1169","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"mag:2026713428","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/pdf/1311.1169v1","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"arXiv (Cornell University)","raw_type":null},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.768.1352","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.768.1352","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/1311.1169.pdf","raw_type":"text"},{"id":"pmh:oai:edit.elte.hu:10831/48629","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/10831/48629","pdf_url":null,"source":{"id":"https://openalex.org/S4306400126","display_name":"ELTE Digital Institutional Repository (EDIT) (E\u00f6tv\u00f6s Lor\u00e1nd University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I106118109","host_organization_name":"E\u00f6tv\u00f6s Lor\u00e1nd University","host_organization_lineage":["https://openalex.org/I106118109"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/bookPart"},{"id":"doi:10.48550/arxiv.1311.1169","doi":"https://doi.org/10.48550/arxiv.1311.1169","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.1311.1169","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:1311.1169","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/1311.1169","pdf_url":"https://arxiv.org/pdf/1311.1169","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G6283920954","display_name":null,"funder_award_id":"NAP 2005/KCKHA005","funder_id":"https://openalex.org/F4320321994","funder_display_name":"Hungarian Scientific Research Fund"},{"id":"https://openalex.org/G6978788099","display_name":null,"funder_award_id":"-2012-0001","funder_id":"https://openalex.org/F4320321994","funder_display_name":"Hungarian Scientific Research Fund"},{"id":"https://openalex.org/G7750717606","display_name":null,"funder_award_id":"OTKA 7779","funder_id":"https://openalex.org/F4320321994","funder_display_name":"Hungarian Scientific Research Fund"}],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320321994","display_name":"Hungarian Scientific Research Fund","ror":"https://ror.org/00v349e63"},{"id":"https://openalex.org/F4320328860","display_name":"Magyarorsz\u00e1g Korm\u00e1nya","ror":"https://ror.org/007ekx298"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2026713428.pdf","grobid_xml":"https://content.openalex.org/works/W2026713428.grobid-xml"},"referenced_works_count":18,"referenced_works":["https://openalex.org/W1581850394","https://openalex.org/W1736339626","https://openalex.org/W1967579779","https://openalex.org/W1983578042","https://openalex.org/W2018277822","https://openalex.org/W2027135291","https://openalex.org/W2089150068","https://openalex.org/W2109603058","https://openalex.org/W2123329834","https://openalex.org/W2127492100","https://openalex.org/W2128914432","https://openalex.org/W2145962650","https://openalex.org/W2146534064","https://openalex.org/W2147152072","https://openalex.org/W2150375325","https://openalex.org/W2162965720","https://openalex.org/W2168346693","https://openalex.org/W6681398051"],"related_works":["https://openalex.org/W2234751941","https://openalex.org/W2754105901","https://openalex.org/W2213844264","https://openalex.org/W4309422150","https://openalex.org/W2149510050","https://openalex.org/W7097810065","https://openalex.org/W3187921104","https://openalex.org/W2142889507","https://openalex.org/W2292415828","https://openalex.org/W3174411079"],"abstract_inverted_index":{"Principal":[0],"component":[1],"analysis":[2],"(PCA)":[3],"and":[4,51,69,142],"related":[5],"techniques":[6],"have":[7],"been":[8],"successfully":[9],"employed":[10],"in":[11,18,78,81,128],"natural":[12],"language":[13,79,140],"processing.":[14],"Text":[15],"mining":[16],"applications":[17],"the":[19,22,47,74,93,97,100,117,125,147,165],"age":[20],"of":[21,49,99,109,119,139,144,164],"online":[23,82],"social":[24,83],"media":[25],"(OSM)":[26],"face":[27],"new":[28],"challenges":[29],"due":[30],"to":[31,34,42,65,135,154],"properties":[32],"specific":[33,41],"these":[35],"use":[36,80,141],"cases":[37],"(e.g.":[38],"spelling":[39],"issues":[40],"texts":[43],"posted":[44,95],"by":[45,96],"users,":[46],"presence":[48],"spammers":[50],"bots,":[52],"service":[53],"announcements,":[54],"etc.).":[55],"In":[56],"this":[57],"paper,":[58],"we":[59,122,151],"employ":[60],"a":[61,105,120],"Robust":[62],"PCA":[63,148],"technique":[64],"separate":[66],"typical":[67],"outliers":[68],"highly":[70],"localized":[71],"topics":[72,143],"from":[73],"low-dimensional":[75,157],"structure":[76],"present":[77,127],"networks.":[84],"Our":[85],"focus":[86],"is":[87],"on":[88],"identifying":[89],"geospatial":[90],"features":[91,138],"among":[92],"messages":[94],"users":[98],"Twitter":[101],"microblogging":[102],"service.":[103],"Using":[104,146],"dataset":[106],"which":[107,159],"consists":[108],"over":[110,116],"200":[111],"million":[112],"geolocated":[113],"tweets":[114],"collected":[115],"course":[118],"year,":[121],"investigate":[123],"whether":[124],"information":[126],"word":[129],"usage":[130],"frequencies":[131],"can":[132],"be":[133],"used":[134],"identify":[136,155],"regional":[137],"interest.":[145],"pursuit":[149],"method,":[150],"are":[152],"able":[153],"important":[156],"features,":[158],"constitute":[160],"smoothly":[161],"varying":[162],"functions":[163],"geographic":[166],"location.":[167]},"counts_by_year":[{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":3},{"year":2014,"cited_by_count":2}],"updated_date":"2026-11-05T12:25:35.769452","created_date":"2016-06-24T00:00:00"}