{"id":"https://openalex.org/W2967359170","doi":"https://doi.org/10.1145/3340964.3340980","title":"Location relevance and diversity in symbolic trajectories with application to telco data","display_name":"Location relevance and diversity in symbolic trajectories with application to telco data","publication_year":2019,"publication_date":"2019-08-16","ids":{"openalex":"https://openalex.org/W2967359170","doi":"https://doi.org/10.1145/3340964.3340980","mag":"2967359170"},"language":"en","primary_location":{"id":"doi:10.1145/3340964.3340980","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3340964.3340980","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 16th International Symposium on Spatial and Temporal Databases","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/2434/676212","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5079937994","display_name":"Maria Luisa Damiani","orcid":"https://orcid.org/0000-0001-9587-308X"},"institutions":[{"id":"https://openalex.org/I189158943","display_name":"University of Milan","ror":"https://ror.org/00wjc7c48","country_code":"IT","type":"education","lineage":["https://openalex.org/I189158943"]}],"countries":["IT"],"is_corresponding":true,"raw_author_name":"Maria Luisa Damiani","raw_affiliation_strings":["Dept. Computer Science, University of Milan (I)"],"affiliations":[{"raw_affiliation_string":"Dept. Computer Science, University of Milan (I)","institution_ids":["https://openalex.org/I189158943"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Fatima Hachem","orcid":null},"institutions":[{"id":"https://openalex.org/I189158943","display_name":"University of Milan","ror":"https://ror.org/00wjc7c48","country_code":"IT","type":"education","lineage":["https://openalex.org/I189158943"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Fatima Hachem","raw_affiliation_strings":["Dept. Computer Science, University of Milan (I)"],"affiliations":[{"raw_affiliation_string":"Dept. Computer Science, University of Milan (I)","institution_ids":["https://openalex.org/I189158943"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011198385","display_name":"Christian Quadri","orcid":"https://orcid.org/0000-0002-3608-8142"},"institutions":[{"id":"https://openalex.org/I189158943","display_name":"University of Milan","ror":"https://ror.org/00wjc7c48","country_code":"IT","type":"education","lineage":["https://openalex.org/I189158943"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Christian Quadri","raw_affiliation_strings":["Dept. Computer Science, University of Milan (I)"],"affiliations":[{"raw_affiliation_string":"Dept. Computer Science, University of Milan (I)","institution_ids":["https://openalex.org/I189158943"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5002723662","display_name":"Sabrina Gaito","orcid":"https://orcid.org/0000-0003-3779-2809"},"institutions":[{"id":"https://openalex.org/I189158943","display_name":"University of Milan","ror":"https://ror.org/00wjc7c48","country_code":"IT","type":"education","lineage":["https://openalex.org/I189158943"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Sabrina Gaito","raw_affiliation_strings":["Dept. Computer Science, University of Milan (I)"],"affiliations":[{"raw_affiliation_string":"Dept. Computer Science, University of Milan (I)","institution_ids":["https://openalex.org/I189158943"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5079937994"],"corresponding_institution_ids":["https://openalex.org/I189158943"],"apc_list":null,"apc_paid":null,"fwci":0.7102,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.80492701,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"41","last_page":"50"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9998999834060669,"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"}},{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9921000003814697,"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/T11896","display_name":"Opportunistic and Delay-Tolerant Networks","score":0.9779999852180481,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/automatic-summarization","display_name":"Automatic summarization","score":0.9257757663726807},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8119449615478516},{"id":"https://openalex.org/keywords/relevance","display_name":"Relevance (law)","score":0.7126243114471436},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.673265278339386},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.5242303013801575},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.4707995653152466},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.35652393102645874},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2689470648765564}],"concepts":[{"id":"https://openalex.org/C170858558","wikidata":"https://www.wikidata.org/wiki/Q1394144","display_name":"Automatic summarization","level":2,"score":0.9257757663726807},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8119449615478516},{"id":"https://openalex.org/C158154518","wikidata":"https://www.wikidata.org/wiki/Q7310970","display_name":"Relevance (law)","level":2,"score":0.7126243114471436},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.673265278339386},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.5242303013801575},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.4707995653152466},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.35652393102645874},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2689470648765564},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","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/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/3340964.3340980","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3340964.3340980","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 16th International Symposium on Spatial and Temporal Databases","raw_type":"proceedings-article"},{"id":"pmh:oai:air.unimi.it:2434/676212","is_oa":true,"landing_page_url":"http://hdl.handle.net/2434/676212","pdf_url":null,"source":{"id":"https://openalex.org/S4306400516","display_name":"Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I189158943","host_organization_name":"University of Milan","host_organization_lineage":["https://openalex.org/I189158943"],"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"}],"best_oa_location":{"id":"pmh:oai:air.unimi.it:2434/676212","is_oa":true,"landing_page_url":"http://hdl.handle.net/2434/676212","pdf_url":null,"source":{"id":"https://openalex.org/S4306400516","display_name":"Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I189158943","host_organization_name":"University of Milan","host_organization_lineage":["https://openalex.org/I189158943"],"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"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W1758661201","https://openalex.org/W1976133720","https://openalex.org/W1982300822","https://openalex.org/W2004602565","https://openalex.org/W2028031999","https://openalex.org/W2063244649","https://openalex.org/W2090702599","https://openalex.org/W2102289551","https://openalex.org/W2120474334","https://openalex.org/W2126194848","https://openalex.org/W2133400794","https://openalex.org/W2137558058","https://openalex.org/W2148735094","https://openalex.org/W2270219430","https://openalex.org/W2339065330","https://openalex.org/W2339548198","https://openalex.org/W2760942449","https://openalex.org/W2793669795","https://openalex.org/W2821470430","https://openalex.org/W2913987032","https://openalex.org/W3105264942","https://openalex.org/W6680276472"],"related_works":["https://openalex.org/W2366403280","https://openalex.org/W1495108544","https://openalex.org/W2091301346","https://openalex.org/W3148229873","https://openalex.org/W4389760904","https://openalex.org/W2150160875","https://openalex.org/W4242223894","https://openalex.org/W4306886878","https://openalex.org/W1517524280","https://openalex.org/W2740913191"],"abstract_inverted_index":{"We":[0,124,146],"present":[1],"an":[2],"approach":[3,91],"to":[4,56,114],"the":[5,33,59,62,71,104,112,126,162],"discovery":[6,34],"and":[7,12,70,76,99,109,139],"characterization":[8],"of":[9,27,35,131,143],"relevant":[10,36],"locations":[11,37,72],"related":[13],"mobility":[14,117,163,170],"patterns":[15],"in":[16,81,93,119],"symbolic":[17],"trajectories":[18,45,101,134],"built":[19],"on":[20],"call":[21],"detail":[22],"records":[23],"-":[24,26],"CDRs":[25],"mobile":[28],"phones":[29],"(telco":[30],"trajectories).":[31],"While":[32],"has":[38],"been":[39],"widely":[40],"investigated":[41],"for":[42,106],"continuous":[43],"spatial":[44],"(e.g.,":[46],"stay":[47],"points":[48,138],"detection":[49],"methods),":[50],"it":[51],"is":[52,64],"not":[53,152],"clear":[54],"how":[55],"deal":[57],"with":[58,135],"problem":[60],"when":[61],"movement":[63],"defined":[65],"over":[66,128],"a":[67,89,120,129,141],"discrete":[68],"space":[69],"are":[73],"symbolic,":[74],"noisy":[75],"irregularly":[77],"sampled,":[78],"such":[79],"as":[80],"telco":[82],"trajectories.":[83],"In":[84],"this":[85],"paper,":[86],"we":[87],"propose":[88],"methodological":[90],"structured":[92],"two":[94],"steps,":[95],"called":[96],"trajectory":[97,149],"summarization":[98,150],"summary":[100],"analysis,":[102],"respectively,":[103],"former":[105],"removing":[107],"noise":[108],"irrelevant":[110],"locations;":[111],"latter":[113],"synthesize":[115],"key":[116],"features":[118],"few":[121],"novel":[122,166],"indicators.":[123],"evaluate":[125],"methodology":[127],"dataset":[130],"approx":[132],"17,000":[133],"55":[136],"million":[137],"spanning":[140],"period":[142],"67":[144],"days.":[145],"find":[147],"that":[148],"does":[151],"compromise":[153],"data":[154,159],"utility,":[155],"while":[156],"significantly":[157],"reducing":[158],"size.":[160],"Moreover,":[161],"indicators":[164],"provide":[165],"insights":[167],"into":[168],"human":[169],"behavior.":[171]},"counts_by_year":[{"year":2020,"cited_by_count":2}],"updated_date":"2026-03-25T23:56:10.502304","created_date":"2025-10-10T00:00:00"}
