{"id":"https://openalex.org/W2027156036","doi":"https://doi.org/10.1145/1142351.1142382","title":"Processing queries on tree-structured data efficiently","display_name":"Processing queries on tree-structured data efficiently","publication_year":2006,"publication_date":"2006-06-26","ids":{"openalex":"https://openalex.org/W2027156036","doi":"https://doi.org/10.1145/1142351.1142382","mag":"2027156036"},"language":"en","primary_location":{"id":"doi:10.1145/1142351.1142382","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1142351.1142382","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the twenty-fifth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://infoscience.epfl.ch/record/166868","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101903922","display_name":"Christoph Koch","orcid":"https://orcid.org/0000-0002-9130-7205"},"institutions":[{"id":"https://openalex.org/I91712215","display_name":"Saarland University","ror":"https://ror.org/01jdpyv68","country_code":"DE","type":"education","lineage":["https://openalex.org/I91712215"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Christoph Koch","raw_affiliation_strings":["Saarland University, Saarbr\u00fccken, Germany"],"affiliations":[{"raw_affiliation_string":"Saarland University, Saarbr\u00fccken, Germany","institution_ids":["https://openalex.org/I91712215"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5101903922"],"corresponding_institution_ids":["https://openalex.org/I91712215"],"apc_list":null,"apc_paid":null,"fwci":3.1501,"has_fulltext":false,"cited_by_count":22,"citation_normalized_percentile":{"value":0.92129667,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"213","last_page":"224"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9998999834060669,"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"}},{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9998999834060669,"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/T10538","display_name":"Data Mining Algorithms and Applications","score":0.9987000226974487,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/xpath","display_name":"XPath","score":0.8359434008598328},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.828615128993988},{"id":"https://openalex.org/keywords/datalog","display_name":"Datalog","score":0.8271811008453369},{"id":"https://openalex.org/keywords/tuple","display_name":"Tuple","score":0.7656316757202148},{"id":"https://openalex.org/keywords/conjunctive-query","display_name":"Conjunctive query","score":0.7468999624252319},{"id":"https://openalex.org/keywords/query-language","display_name":"Query language","score":0.5497468709945679},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.5424500107765198},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.5286624431610107},{"id":"https://openalex.org/keywords/query-optimization","display_name":"Query optimization","score":0.5255138874053955},{"id":"https://openalex.org/keywords/tree","display_name":"Tree (set theory)","score":0.494615763425827},{"id":"https://openalex.org/keywords/spatial-query","display_name":"Spatial query","score":0.4151732325553894},{"id":"https://openalex.org/keywords/sargable","display_name":"Sargable","score":0.305229127407074},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.2860184907913208},{"id":"https://openalex.org/keywords/relational-database","display_name":"Relational database","score":0.27877289056777954},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.2570805549621582},{"id":"https://openalex.org/keywords/xml","display_name":"XML","score":0.19705018401145935},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11675101518630981},{"id":"https://openalex.org/keywords/xml-database","display_name":"XML database","score":0.0979296863079071},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.08246338367462158},{"id":"https://openalex.org/keywords/search-engine","display_name":"Search engine","score":0.08174559473991394},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.07713118195533752}],"concepts":[{"id":"https://openalex.org/C2780213375","wikidata":"https://www.wikidata.org/wiki/Q16340","display_name":"XPath","level":4,"score":0.8359434008598328},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.828615128993988},{"id":"https://openalex.org/C148230440","wikidata":"https://www.wikidata.org/wiki/Q1172264","display_name":"Datalog","level":2,"score":0.8271811008453369},{"id":"https://openalex.org/C118930307","wikidata":"https://www.wikidata.org/wiki/Q600590","display_name":"Tuple","level":2,"score":0.7656316757202148},{"id":"https://openalex.org/C65647387","wikidata":"https://www.wikidata.org/wiki/Q1781706","display_name":"Conjunctive query","level":3,"score":0.7468999624252319},{"id":"https://openalex.org/C192028432","wikidata":"https://www.wikidata.org/wiki/Q845739","display_name":"Query language","level":2,"score":0.5497468709945679},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.5424500107765198},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.5286624431610107},{"id":"https://openalex.org/C157692150","wikidata":"https://www.wikidata.org/wiki/Q2919848","display_name":"Query optimization","level":2,"score":0.5255138874053955},{"id":"https://openalex.org/C113174947","wikidata":"https://www.wikidata.org/wiki/Q2859736","display_name":"Tree (set theory)","level":2,"score":0.494615763425827},{"id":"https://openalex.org/C172722865","wikidata":"https://www.wikidata.org/wiki/Q2302053","display_name":"Spatial query","level":5,"score":0.4151732325553894},{"id":"https://openalex.org/C192939062","wikidata":"https://www.wikidata.org/wiki/Q104840822","display_name":"Sargable","level":4,"score":0.305229127407074},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.2860184907913208},{"id":"https://openalex.org/C5655090","wikidata":"https://www.wikidata.org/wiki/Q192588","display_name":"Relational database","level":2,"score":0.27877289056777954},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.2570805549621582},{"id":"https://openalex.org/C8797682","wikidata":"https://www.wikidata.org/wiki/Q2115","display_name":"XML","level":2,"score":0.19705018401145935},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11675101518630981},{"id":"https://openalex.org/C183068750","wikidata":"https://www.wikidata.org/wiki/Q357393","display_name":"XML database","level":3,"score":0.0979296863079071},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.08246338367462158},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.08174559473991394},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.07713118195533752},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"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/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1145/1142351.1142382","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1142351.1142382","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the twenty-fifth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.134.2852","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.134.2852","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.cs.cornell.edu/~koch/download/pods2006.pdf","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.187.8181","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.187.8181","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.cs.cornell.edu/%7Ekoch/www.infosys.uni-sb.de/publications/INFOSYS-TR-2006-8.pdf","raw_type":"text"},{"id":"pmh:oai:infoscience.epfl.ch:166868","is_oa":true,"landing_page_url":"http://infoscience.epfl.ch/record/166868","pdf_url":null,"source":{"id":"https://openalex.org/S4306400487","display_name":"Infoscience (Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"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":"","raw_type":"Text"}],"best_oa_location":{"id":"pmh:oai:infoscience.epfl.ch:166868","is_oa":true,"landing_page_url":"http://infoscience.epfl.ch/record/166868","pdf_url":null,"source":{"id":"https://openalex.org/S4306400487","display_name":"Infoscience (Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"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":"","raw_type":"Text"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":79,"referenced_works":["https://openalex.org/W51516856","https://openalex.org/W52840101","https://openalex.org/W655258421","https://openalex.org/W1481200545","https://openalex.org/W1482193060","https://openalex.org/W1489366126","https://openalex.org/W1497287285","https://openalex.org/W1504467106","https://openalex.org/W1506378440","https://openalex.org/W1508780728","https://openalex.org/W1525848106","https://openalex.org/W1527664624","https://openalex.org/W1528001973","https://openalex.org/W1540080689","https://openalex.org/W1547865268","https://openalex.org/W1548569630","https://openalex.org/W1558832481","https://openalex.org/W1596995530","https://openalex.org/W1599833144","https://openalex.org/W1602232605","https://openalex.org/W1716100575","https://openalex.org/W1749554492","https://openalex.org/W1956349214","https://openalex.org/W1969965298","https://openalex.org/W1970461133","https://openalex.org/W1989783863","https://openalex.org/W1995214664","https://openalex.org/W2004485491","https://openalex.org/W2026511056","https://openalex.org/W2026745535","https://openalex.org/W2033325972","https://openalex.org/W2035020702","https://openalex.org/W2035902703","https://openalex.org/W2046652577","https://openalex.org/W2051896104","https://openalex.org/W2053045757","https://openalex.org/W2059078591","https://openalex.org/W2061884758","https://openalex.org/W2063039776","https://openalex.org/W2064580935","https://openalex.org/W2070632872","https://openalex.org/W2073663206","https://openalex.org/W2079107830","https://openalex.org/W2083308531","https://openalex.org/W2103332648","https://openalex.org/W2106367761","https://openalex.org/W2107683037","https://openalex.org/W2107741633","https://openalex.org/W2110089831","https://openalex.org/W2111087864","https://openalex.org/W2113836856","https://openalex.org/W2114240051","https://openalex.org/W2115295490","https://openalex.org/W2122225808","https://openalex.org/W2122530852","https://openalex.org/W2129097092","https://openalex.org/W2131323387","https://openalex.org/W2134483537","https://openalex.org/W2134826526","https://openalex.org/W2137133993","https://openalex.org/W2137420916","https://openalex.org/W2137924956","https://openalex.org/W2138811609","https://openalex.org/W2148210463","https://openalex.org/W2152252136","https://openalex.org/W2159668267","https://openalex.org/W2160888032","https://openalex.org/W2170477095","https://openalex.org/W2170583772","https://openalex.org/W2337098149","https://openalex.org/W2616076417","https://openalex.org/W4254380579","https://openalex.org/W6602175484","https://openalex.org/W6628898632","https://openalex.org/W6632975479","https://openalex.org/W6737679231","https://openalex.org/W6818260395","https://openalex.org/W7000160435","https://openalex.org/W7020729299"],"related_works":["https://openalex.org/W20972493","https://openalex.org/W2338525844","https://openalex.org/W2951257011","https://openalex.org/W4299540831","https://openalex.org/W2896766859","https://openalex.org/W4288363924","https://openalex.org/W2926816154","https://openalex.org/W2740681086","https://openalex.org/W2199172455","https://openalex.org/W4389096604"],"abstract_inverted_index":{"This":[0],"is":[1],"a":[2,41],"survey":[3],"of":[4,29,43],"algorithms,":[5],"complexity":[6],"results,":[7],"and":[8,35],"general":[9],"solution":[10],"techniques":[11],"for":[12],"efficiently":[13],"processing":[14],"queries":[15],"on":[16,21],"tree-structured":[17],"data.":[18],"I":[19,37],"focus":[20],"query":[22],"languages":[23],"that":[24,48],"compute":[25],"nodes":[26],"or":[27],"tuples":[28],"nodes\u2014conjunctive":[30],"queries,":[31,33],"first-order":[32],"datalog,":[34],"XPath.":[36],"also":[38],"point":[39],"out":[40],"number":[42],"connections":[44],"among":[45],"previous":[46],"results":[47],"have":[49],"not":[50],"been":[51],"observed":[52],"before.":[53]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}