{"id":"https://openalex.org/W1779170294","doi":"https://doi.org/10.14778/2732977.2732985","title":"Aggregate estimation over dynamic hidden web databases","display_name":"Aggregate estimation over dynamic hidden web databases","publication_year":2014,"publication_date":"2014-08-01","ids":{"openalex":"https://openalex.org/W1779170294","doi":"https://doi.org/10.14778/2732977.2732985","mag":"1779170294"},"language":"en","primary_location":{"id":"doi:10.14778/2732977.2732985","is_oa":false,"landing_page_url":"https://doi.org/10.14778/2732977.2732985","pdf_url":null,"source":{"id":"https://openalex.org/S4210226185","display_name":"Proceedings of the VLDB Endowment","issn_l":"2150-8097","issn":["2150-8097"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the VLDB Endowment","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/A5077974888","display_name":"Weimo Liu","orcid":null},"institutions":[{"id":"https://openalex.org/I193531525","display_name":"George Washington University","ror":"https://ror.org/00y4zzh67","country_code":"US","type":"education","lineage":["https://openalex.org/I193531525"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Weimo Liu","raw_affiliation_strings":["The George Washington University","the George Washington University"],"affiliations":[{"raw_affiliation_string":"The George Washington University","institution_ids":["https://openalex.org/I193531525"]},{"raw_affiliation_string":"the George Washington University","institution_ids":["https://openalex.org/I193531525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066004392","display_name":"Saravanan Thirumuruganathan","orcid":"https://orcid.org/0000-0002-1517-480X"},"institutions":[{"id":"https://openalex.org/I189196454","display_name":"The University of Texas at Arlington","ror":"https://ror.org/019kgqr73","country_code":"US","type":"education","lineage":["https://openalex.org/I189196454"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Saravanan Thirumuruganathan","raw_affiliation_strings":["University of Texas at Arlington"],"affiliations":[{"raw_affiliation_string":"University of Texas at Arlington","institution_ids":["https://openalex.org/I189196454"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100331339","display_name":"Nan Zhang","orcid":"https://orcid.org/0000-0003-3937-5179"},"institutions":[{"id":"https://openalex.org/I193531525","display_name":"George Washington University","ror":"https://ror.org/00y4zzh67","country_code":"US","type":"education","lineage":["https://openalex.org/I193531525"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Nan Zhang","raw_affiliation_strings":["The George Washington University","the George Washington University"],"affiliations":[{"raw_affiliation_string":"The George Washington University","institution_ids":["https://openalex.org/I193531525"]},{"raw_affiliation_string":"the George Washington University","institution_ids":["https://openalex.org/I193531525"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5002203026","display_name":"Gautam Das","orcid":"https://orcid.org/0000-0002-4627-9065"},"institutions":[{"id":"https://openalex.org/I189196454","display_name":"The University of Texas at Arlington","ror":"https://ror.org/019kgqr73","country_code":"US","type":"education","lineage":["https://openalex.org/I189196454"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Gautam Das","raw_affiliation_strings":["University of Texas at Arlington"],"affiliations":[{"raw_affiliation_string":"University of Texas at Arlington","institution_ids":["https://openalex.org/I189196454"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5077974888"],"corresponding_institution_ids":["https://openalex.org/I193531525"],"apc_list":null,"apc_paid":null,"fwci":7.8889,"has_fulltext":false,"cited_by_count":16,"citation_normalized_percentile":{"value":0.96875708,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"7","issue":"12","first_page":"1107","last_page":"1118"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12016","display_name":"Web Data Mining and Analysis","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/T12016","display_name":"Web Data Mining and Analysis","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/T12761","display_name":"Data Stream Mining Techniques","score":0.9980000257492065,"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/T11106","display_name":"Data Management and Algorithms","score":0.9959999918937683,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7904216051101685},{"id":"https://openalex.org/keywords/aggregate","display_name":"Aggregate (composite)","score":0.7050349116325378},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.6717004776000977},{"id":"https://openalex.org/keywords/deep-web","display_name":"Deep Web","score":0.47394895553588867},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.4575861692428589},{"id":"https://openalex.org/keywords/data-web","display_name":"Data Web","score":0.4375547468662262},{"id":"https://openalex.org/keywords/web-application","display_name":"Web application","score":0.4145740866661072},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.3634827136993408},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.3554916977882385},{"id":"https://openalex.org/keywords/web-page","display_name":"Web page","score":0.31305992603302},{"id":"https://openalex.org/keywords/search-engine","display_name":"Search engine","score":0.28199630975723267},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.26404207944869995},{"id":"https://openalex.org/keywords/the-internet","display_name":"The Internet","score":0.18297863006591797}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7904216051101685},{"id":"https://openalex.org/C4679612","wikidata":"https://www.wikidata.org/wiki/Q866298","display_name":"Aggregate (composite)","level":2,"score":0.7050349116325378},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.6717004776000977},{"id":"https://openalex.org/C46721378","wikidata":"https://www.wikidata.org/wiki/Q221989","display_name":"Deep Web","level":3,"score":0.47394895553588867},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.4575861692428589},{"id":"https://openalex.org/C162005631","wikidata":"https://www.wikidata.org/wiki/Q54837","display_name":"Data Web","level":3,"score":0.4375547468662262},{"id":"https://openalex.org/C118643609","wikidata":"https://www.wikidata.org/wiki/Q189210","display_name":"Web application","level":2,"score":0.4145740866661072},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.3634827136993408},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3554916977882385},{"id":"https://openalex.org/C21959979","wikidata":"https://www.wikidata.org/wiki/Q36774","display_name":"Web page","level":2,"score":0.31305992603302},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.28199630975723267},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.26404207944869995},{"id":"https://openalex.org/C110875604","wikidata":"https://www.wikidata.org/wiki/Q75","display_name":"The Internet","level":2,"score":0.18297863006591797},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.14778/2732977.2732985","is_oa":false,"landing_page_url":"https://doi.org/10.14778/2732977.2732985","pdf_url":null,"source":{"id":"https://openalex.org/S4210226185","display_name":"Proceedings of the VLDB Endowment","issn_l":"2150-8097","issn":["2150-8097"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the VLDB Endowment","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.637.259","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.637.259","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.vldb.org/pvldb/vol7/p1107-liu.pdf","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.758.7008","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.758.7008","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/1403.2763.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5099999904632568,"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320308943","display_name":"Microsoft Research","ror":"https://ror.org/00d0nc645"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":36,"referenced_works":["https://openalex.org/W1586825695","https://openalex.org/W1605217017","https://openalex.org/W1970173714","https://openalex.org/W1989361423","https://openalex.org/W2001474264","https://openalex.org/W2015432483","https://openalex.org/W2018816493","https://openalex.org/W2022760666","https://openalex.org/W2027780984","https://openalex.org/W2039100193","https://openalex.org/W2041771431","https://openalex.org/W2043499927","https://openalex.org/W2049236082","https://openalex.org/W2078907037","https://openalex.org/W2081189989","https://openalex.org/W2096021368","https://openalex.org/W2102815161","https://openalex.org/W2110557355","https://openalex.org/W2115457429","https://openalex.org/W2119885577","https://openalex.org/W2123853152","https://openalex.org/W2125086650","https://openalex.org/W2129817180","https://openalex.org/W2132520482","https://openalex.org/W2139259611","https://openalex.org/W2146025491","https://openalex.org/W2148706674","https://openalex.org/W2151512210","https://openalex.org/W2152029707","https://openalex.org/W2154707336","https://openalex.org/W2169982181","https://openalex.org/W2170188121","https://openalex.org/W2766000922","https://openalex.org/W2950611619","https://openalex.org/W4206606839","https://openalex.org/W6685116542"],"related_works":["https://openalex.org/W1892772476","https://openalex.org/W2105588725","https://openalex.org/W2365708522","https://openalex.org/W2316769715","https://openalex.org/W1507164096","https://openalex.org/W2124649262","https://openalex.org/W2389366817","https://openalex.org/W2368996030","https://openalex.org/W2074888472","https://openalex.org/W2182622516"],"abstract_inverted_index":{"Many":[0],"databases":[1,34,72,94],"on":[2],"the":[3,46,62,84,98,119,132],"web":[4,33,48,71,93,140],"are":[5,76],"\"hidden\"":[6],"behind":[7],"(i.e.,":[8],"accessible":[9],"only":[10],"through)":[11],"their":[12,126],"restrictive,":[13],"form-like,":[14],"search":[15,43,108],"interfaces.":[16],"Recent":[17],"studies":[18],"have":[19],"shown":[20],"that":[21,58],"it":[22],"is":[23,57],"possible":[24],"to":[25,65,97],"estimate":[26],"aggregate":[27],"query":[28],"answers":[29],"over":[30,90,128],"such":[31],"hidden":[32,92],"by":[35],"issuing":[36],"a":[37],"small":[38],"number":[39],"of":[40,87,121,135],"carefully":[41],"designed":[42,137],"queries":[44,109],"through":[45],"restrictive":[47],"interface.":[49],"A":[50],"problem":[51,86],"with":[52],"these":[53],"existing":[54],"work,":[55],"however,":[56],"they":[59,102],"all":[60],"assume":[61],"underlying":[63],"database":[64],"be":[66],"static,":[67],"while":[68,95],"most":[69,106],"real-world":[70,116],"(e.g.,":[73,104,131],"Amazon,":[74],"eBay)":[75],"frequently":[77],"updated.":[78],"In":[79],"this":[80],"paper,":[81],"we":[82],"study":[83],"novel":[85],"estimating/tracking":[88],"aggregates":[89],"dynamic":[91],"adhering":[96],"stringent":[99],"query-cost":[100],"limitation":[101],"enforce":[103],"at":[105],"1,000":[107],"per":[110],"day).":[111],"Theoretical":[112],"analysis":[113],"and":[114,125],"extensive":[115],"experiments":[117],"demonstrate":[118],"effectiveness":[120],"our":[122],"proposed":[123],"algorithms":[124,136],"superiority":[127],"baseline":[129],"solutions":[130],"repeated":[133],"execution":[134],"for":[138],"static":[139],"databases).":[141]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":4},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}