{"id":"https://openalex.org/W12299769","doi":"https://doi.org/10.21236/ada459303","title":"TDT-2002 Topic Tracking at Maryland: First Experiments with the Lemur Toolkit","display_name":"TDT-2002 Topic Tracking at Maryland: First Experiments with the Lemur Toolkit","publication_year":2003,"publication_date":"2003-02-01","ids":{"openalex":"https://openalex.org/W12299769","doi":"https://doi.org/10.21236/ada459303","mag":"12299769"},"language":"en","primary_location":{"id":"doi:10.21236/ada459303","doi":"https://doi.org/10.21236/ada459303","is_oa":false,"landing_page_url":"https://doi.org/10.21236/ada459303","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"US Dept of the Navy","raw_type":"report"},"volume":null,"type":"conference-abstract","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://drum.lib.umd.edu/bitstreams/2f0acc57-107d-4fb6-a837-4fd1fa1d66e4/download","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5026188630","display_name":"Daqing He","orcid":"https://orcid.org/0000-0002-4645-8696","observed_orcids":["https://orcid.org/0000-0002-4645-8696"]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Daqing He","raw_affiliation_strings":["Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742","institution_ids":["https://openalex.org/I66946132"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027014861","display_name":"Hyuk R. Park","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Hyuk R. Park","raw_affiliation_strings":["Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742","institution_ids":["https://openalex.org/I66946132"]}]},{"author_position":"middle","author":{"id":null,"display_name":"G. C. Murray","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"G. C. Murray","raw_affiliation_strings":["Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742","institution_ids":["https://openalex.org/I66946132"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037786137","display_name":"Michael Subotin","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Michael Subotin","raw_affiliation_strings":["Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742","institution_ids":["https://openalex.org/I66946132"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5074322406","display_name":"Douglas W. Oard","orcid":"https://orcid.org/0000-0002-1696-0407","observed_orcids":["https://orcid.org/0000-0002-1696-0407"]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Douglas W. Oard","raw_affiliation_strings":["Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute for Advanced Computer Studies University of Maryland, College Park, MD 20742","institution_ids":["https://openalex.org/I66946132"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I66946132"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":4,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10028","display_name":"Topic Modeling","score":0.6128000020980835,"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/T10028","display_name":"Topic Modeling","score":0.6128000020980835,"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/T10181","display_name":"Natural Language Processing Techniques","score":0.288100004196167,"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/T11550","display_name":"Text and Document Classification Technologies","score":0.024700000882148743,"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/topic-detection-and-tracking","display_name":"topic detection and tracking","score":0.8700000047683716},{"id":"https://openalex.org/keywords/language-modeling","display_name":"language modeling","score":0.7940000295639038},{"id":"https://openalex.org/keywords/term-frequency","display_name":"term frequency","score":0.777999997138977},{"id":"https://openalex.org/keywords/arabic-text","display_name":"Arabic text","score":0.5230000019073486},{"id":"https://openalex.org/keywords/statistical-machine-translation","display_name":"statistical machine translation","score":0.628000020980835},{"id":"https://openalex.org/keywords/multilingual-text-processing","display_name":"multilingual text processing","score":0.34700000286102295}],"concepts":[{"id":"https://openalex.org/C2777002779","wikidata":"https://www.wikidata.org/wiki/Q42478","display_name":"Perl","level":2,"score":0.96351158618927},{"id":"https://openalex.org/C123665754","wikidata":"https://www.wikidata.org/wiki/Q1192405","display_name":"Lemur","level":3,"score":0.7383213639259338},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6770623326301575},{"id":"https://openalex.org/C2778121359","wikidata":"https://www.wikidata.org/wiki/Q8096","display_name":"Lexicon","level":2,"score":0.6293820142745972},{"id":"https://openalex.org/C2775936607","wikidata":"https://www.wikidata.org/wiki/Q466845","display_name":"Tracking (education)","level":2,"score":0.5767191648483276},{"id":"https://openalex.org/C96455323","wikidata":"https://www.wikidata.org/wiki/Q13955","display_name":"Arabic","level":2,"score":0.5287501215934753},{"id":"https://openalex.org/C150670947","wikidata":"https://www.wikidata.org/wiki/Q43091","display_name":"Orthography","level":3,"score":0.5230413675308228},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.5222488045692444},{"id":"https://openalex.org/C61797465","wikidata":"https://www.wikidata.org/wiki/Q1188986","display_name":"Term (time)","level":2,"score":0.4356309175491333},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.43261435627937317},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.41330140829086304},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.3302391469478607},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.22740885615348816},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.10937142372131348},{"id":"https://openalex.org/C554936623","wikidata":"https://www.wikidata.org/wiki/Q199657","display_name":"Reading (process)","level":2,"score":0.09278324246406555},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C169760540","wikidata":"https://www.wikidata.org/wiki/Q207011","display_name":"Neuroscience","level":1,"score":0.0},{"id":"https://openalex.org/C19417346","wikidata":"https://www.wikidata.org/wiki/Q7922","display_name":"Pedagogy","level":1,"score":0.0},{"id":"https://openalex.org/C2780509455","wikidata":"https://www.wikidata.org/wiki/Q7380","display_name":"Primate","level":2,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.21236/ada459303","doi":"https://doi.org/10.21236/ada459303","is_oa":false,"landing_page_url":"https://doi.org/10.21236/ada459303","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"US Dept of the Navy","raw_type":"report"},{"id":"pmh:oai:drum.lib.umd.edu:1903/1266","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/1903/1266","pdf_url":"https://drum.lib.umd.edu/bitstreams/2f0acc57-107d-4fb6-a837-4fd1fa1d66e4/download","source":{"id":"https://openalex.org/S4306401518","display_name":"University Libraries (University of Maryland)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I66946132","host_organization_name":"University of Maryland, College Park","host_organization_lineage":["https://openalex.org/I66946132"],"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":"Technical Report"},{"id":"pmh:ADA459303","doi":null,"is_oa":false,"landing_page_url":"http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA459303","pdf_url":null,"source":{"id":"https://openalex.org/S4406923043","display_name":"Defense Technical Information Center (DTIC)","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":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"DTIC","raw_type":"Text"}],"best_oa_location":{"id":"pmh:oai:drum.lib.umd.edu:1903/1266","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/1903/1266","pdf_url":"https://drum.lib.umd.edu/bitstreams/2f0acc57-107d-4fb6-a837-4fd1fa1d66e4/download","source":{"id":"https://openalex.org/S4306401518","display_name":"University Libraries (University of Maryland)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I66946132","host_organization_name":"University of Maryland, College Park","host_organization_lineage":["https://openalex.org/I66946132"],"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":"Technical Report"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320332180","display_name":"Defense Advanced Research Projects Agency","ror":"https://ror.org/02caytj08"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W12299769.pdf","grobid_xml":"https://content.openalex.org/works/W12299769.grobid-xml"},"referenced_works_count":11,"referenced_works":["https://openalex.org/W117170265","https://openalex.org/W1567441331","https://openalex.org/W2006969979","https://openalex.org/W2062270497","https://openalex.org/W2093390569","https://openalex.org/W2095368471","https://openalex.org/W2098162425","https://openalex.org/W2117119592","https://openalex.org/W4206765718","https://openalex.org/W4244499890","https://openalex.org/W4245107743"],"related_works":["https://openalex.org/W7097161235","https://openalex.org/W7098711260","https://openalex.org/W7097372171","https://openalex.org/W7209889543","https://openalex.org/W1205460133","https://openalex.org/W7095293413","https://openalex.org/W7099205682","https://openalex.org/W2151091754","https://openalex.org/W7160232714","https://openalex.org/W1990201160"],"abstract_inverted_index":{"The":[0,39],"University":[1],"of":[2,58],"Maryland":[3],"submitted":[4],"six":[5],"topic":[6],"tracking":[7],"runs":[8,18,41,45,61],"for":[9],"the":[10,22,27,43,47,59,81,86],"2002":[11],"Topic":[12],"Detection":[13],"and":[14],"Tracking":[15],"evaluation.":[16],"Two":[17,57],"were":[19,30],"produced":[20,31],"using":[21,32],"Lemur":[23,40],"language":[24],"modeling":[25],"toolkit,":[26],"remaining":[28],"four":[29],"a":[33,71],"separate":[34],"system":[35],"coded":[36],"in":[37],"Perl.":[38],"outperformed":[42],"Perl":[44,60],"on":[46,70],"required":[48],"condition":[49],"because":[50],"term":[51],"frequency":[52],"information":[53],"was":[54],"better":[55],"handled.":[56],"used":[62],"native":[63],"Arabic":[64],"orthography":[65],"with":[66,80,85],"two-best":[67],"translation":[68],"based":[69],"statistical":[72],"lexicon,":[73],"obtaining":[74],"similar":[75],"results":[76],"to":[77],"those":[78],"obtained":[79],"Arabic-to-English":[82],"translations":[83],"provided":[84],"collection.":[87]},"counts_by_year":[],"updated_date":"2026-09-29T14:09:16.559479","created_date":"2016-06-24T00:00:00"}