{"id":"https://openalex.org/W2006124775","doi":"https://doi.org/10.1145/2063576.2063859","title":"Effectiveness beyond the first crawl tier","display_name":"Effectiveness beyond the first crawl tier","publication_year":2011,"publication_date":"2011-10-24","ids":{"openalex":"https://openalex.org/W2006124775","doi":"https://doi.org/10.1145/2063576.2063859","mag":"2006124775"},"language":"en","primary_location":{"id":"doi:10.1145/2063576.2063859","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2063576.2063859","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 20th ACM international conference on Information and knowledge management","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/A5025385531","display_name":"Rodrygo L. T. Santos","orcid":"https://orcid.org/0000-0003-2921-8444"},"institutions":[{"id":"https://openalex.org/I7882870","display_name":"University of Glasgow","ror":"https://ror.org/00vtgdb53","country_code":"GB","type":"education","lineage":["https://openalex.org/I7882870"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Rodrygo L.T. Santos","raw_affiliation_strings":["University of Glasgow, Glasgow, United Kingdom","University of Glasgow, Glasgow, United Kingdom#TAB#"],"affiliations":[{"raw_affiliation_string":"University of Glasgow, Glasgow, United Kingdom","institution_ids":["https://openalex.org/I7882870"]},{"raw_affiliation_string":"University of Glasgow, Glasgow, United Kingdom#TAB#","institution_ids":["https://openalex.org/I7882870"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057643560","display_name":"Craig Macdonald","orcid":"https://orcid.org/0000-0003-3143-279X"},"institutions":[{"id":"https://openalex.org/I7882870","display_name":"University of Glasgow","ror":"https://ror.org/00vtgdb53","country_code":"GB","type":"education","lineage":["https://openalex.org/I7882870"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Craig Macdonald","raw_affiliation_strings":["University of Glasgow, Glasgow, United Kingdom","University of Glasgow, Glasgow, United Kingdom#TAB#"],"affiliations":[{"raw_affiliation_string":"University of Glasgow, Glasgow, United Kingdom","institution_ids":["https://openalex.org/I7882870"]},{"raw_affiliation_string":"University of Glasgow, Glasgow, United Kingdom#TAB#","institution_ids":["https://openalex.org/I7882870"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079046603","display_name":"Iadh Ounis","orcid":"https://orcid.org/0000-0003-4701-3223"},"institutions":[{"id":"https://openalex.org/I7882870","display_name":"University of Glasgow","ror":"https://ror.org/00vtgdb53","country_code":"GB","type":"education","lineage":["https://openalex.org/I7882870"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Iadh Ounis","raw_affiliation_strings":["University of Glasgow, Glasgow, United Kingdom","University of Glasgow, Glasgow, United Kingdom#TAB#"],"affiliations":[{"raw_affiliation_string":"University of Glasgow, Glasgow, United Kingdom","institution_ids":["https://openalex.org/I7882870"]},{"raw_affiliation_string":"University of Glasgow, Glasgow, United Kingdom#TAB#","institution_ids":["https://openalex.org/I7882870"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5025385531"],"corresponding_institution_ids":["https://openalex.org/I7882870"],"apc_list":null,"apc_paid":null,"fwci":1.5289,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.88002318,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1937","last_page":"1940"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12016","display_name":"Web Data Mining and Analysis","score":0.9998999834060669,"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":0.9998999834060669,"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/T10286","display_name":"Information Retrieval and Search Behavior","score":0.9937999844551086,"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/T11269","display_name":"Algorithms and Data Compression","score":0.979200005531311,"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/computer-science","display_name":"Computer science","score":0.8494980335235596},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.7255749702453613},{"id":"https://openalex.org/keywords/task","display_name":"Task (project management)","score":0.651985228061676},{"id":"https://openalex.org/keywords/rank","display_name":"Rank (graph theory)","score":0.5879065990447998},{"id":"https://openalex.org/keywords/quality","display_name":"Quality (philosophy)","score":0.5417760610580444},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.5235894918441772},{"id":"https://openalex.org/keywords/search-engine","display_name":"Search engine","score":0.5172632336616516},{"id":"https://openalex.org/keywords/web-crawler","display_name":"Web crawler","score":0.48113909363746643},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.3520555794239044},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.058175086975097656}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8494980335235596},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.7255749702453613},{"id":"https://openalex.org/C2780451532","wikidata":"https://www.wikidata.org/wiki/Q759676","display_name":"Task (project management)","level":2,"score":0.651985228061676},{"id":"https://openalex.org/C164226766","wikidata":"https://www.wikidata.org/wiki/Q7293202","display_name":"Rank (graph theory)","level":2,"score":0.5879065990447998},{"id":"https://openalex.org/C2779530757","wikidata":"https://www.wikidata.org/wiki/Q1207505","display_name":"Quality (philosophy)","level":2,"score":0.5417760610580444},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.5235894918441772},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.5172632336616516},{"id":"https://openalex.org/C13743948","wikidata":"https://www.wikidata.org/wiki/Q45842","display_name":"Web crawler","level":2,"score":0.48113909363746643},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.3520555794239044},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.058175086975097656},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"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/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1145/2063576.2063859","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2063576.2063859","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 20th ACM international conference on Information and knowledge management","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.226.4927","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.226.4927","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://terrierteam.dcs.gla.ac.uk/publications/santos2011cikm-b.pdf","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.711.6292","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.711.6292","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://homepages.dcc.ufmg.br/%7Erodrygo/wp-content/papercite-data/pdf/santos2011cikm-b.pdf","raw_type":"text"},{"id":"pmh:oai:eprints.gla.ac.uk:61658","is_oa":false,"landing_page_url":"http://eprints.gla.ac.uk/61658/","pdf_url":null,"source":{"id":"https://openalex.org/S4210235606","display_name":"ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam)","issn_l":"2622-8912","issn":["2622-8912","2622-8920"],"is_oa":false,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"PeerReviewed"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W94637519","https://openalex.org/W1685426458","https://openalex.org/W2007687650","https://openalex.org/W2073853190","https://openalex.org/W2113184419","https://openalex.org/W2124504084","https://openalex.org/W6603899496"],"related_works":["https://openalex.org/W3005260231","https://openalex.org/W2904469652","https://openalex.org/W4362647146","https://openalex.org/W2383572231","https://openalex.org/W2042034567","https://openalex.org/W3179424333","https://openalex.org/W4230722125","https://openalex.org/W2149158941","https://openalex.org/W1566984846","https://openalex.org/W3038813856"],"abstract_inverted_index":{"Modern":[0],"Web":[1,25,68,115],"crawlers":[2],"seek":[3],"to":[4,33,60,83,104,120],"visit":[5],"quality":[6,31],"documents":[7,45,77,81,149],"first,":[8],"and":[9,78],"re-visit":[10],"them":[11],"more":[12],"frequently":[13],"than":[14],"other":[15],"documents.":[16,107],"As":[17],"a":[18,24,144],"result,":[19],"the":[20,41,54,61,65,84,93,123,151],"first-tier":[21,44,76,106],"crawl":[22],"of":[23,29,43,57,64,72,86,95],"corpus":[26],"is":[27,98],"typically":[28],"higher":[30],"compared":[32],"subsequent":[34],"crawls.":[35],"In":[36,50],"this":[37],"paper,":[38],"we":[39,52,109,133],"investigate":[40],"impact":[42],"on":[46,101],"adhoc":[47,62],"retrieval":[48,55],"performance.":[49,131],"particular,":[51],"analyse":[53],"performance":[56,85,94],"runs":[58,97],"submitted":[59],"task":[63],"TREC":[66],"2009":[67],"track":[69],"in":[70,129],"terms":[71],"how":[73,79],"they":[74],"rank":[75,105],"these":[80,96],"contribute":[82],"each":[87],"run.":[88],"Our":[89],"results":[90,128],"show":[91,110,134],"that":[92,135],"heavily":[99],"dependent":[100],"their":[102,118],"ability":[103],"Moreover,":[108],"that,":[111],"different":[112,140],"from":[113,139],"leading":[114],"search":[116],"engines,":[117],"attempt":[119],"go":[121],"beyond":[122,150],"first":[124,152],"tier":[125],"almost":[126],"always":[127],"decreased":[130],"Finally,":[132],"selectively":[136],"removing":[137],"spam":[138],"tiers":[141],"can":[142],"be":[143],"direction":[145],"for":[146],"fully":[147],"exploiting":[148],"tier.":[153]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}
