{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T18:46:44Z","timestamp":1790362004817,"version":"4.1.0"},"publisher-location":"New York, NY, USA","reference-count":25,"publisher":"ACM","license":[{"start":{"date-parts":[[2009,4,20]],"date-time":"2009-04-20T00:00:00Z","timestamp":1240185600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2009,4,20]]},"DOI":"10.1145\/1526709.1526736","type":"proceedings-article","created":{"date-parts":[[2009,4,21]],"date-time":"2009-04-21T14:17:17Z","timestamp":1240323437000},"page":"191-200","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":83,"title":["Towards context-aware search by learning a very large variable length hidden markov model from search logs"],"prefix":"10.1145","author":[{"given":"Huanhuan","family":"Cao","sequence":"first","affiliation":[{"name":"University of Science and Technology of China, Hefei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daxin","family":"Jiang","sequence":"additional","affiliation":[{"name":"Microsoft Research Asia, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Pei","sequence":"additional","affiliation":[{"name":"Simon Fraser University, Vancouver, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Enhong","family":"Chen","sequence":"additional","affiliation":[{"name":"University of Science and Technology of China, Hefei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hang","family":"Li","sequence":"additional","affiliation":[{"name":"Microsoft Research Asia, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2009,4,20]]},"reference":[{"key":"e_1_3_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-30192-9_58"},{"key":"e_1_3_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/1281192.1281204"},{"key":"e_1_3_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/1277741.1277747"},{"key":"e_1_3_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1214\/aoms\/1177697196"},{"key":"e_1_3_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1145\/347090.347176"},{"key":"e_1_3_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1145\/1401890.1401995"},{"key":"e_1_3_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1145\/1277741.1277746"},{"key":"e_1_3_2_1_8_1","first-page":"281","volume-title":"NIPS","author":"Chu C.T.","year":"2006"},{"key":"e_1_3_2_1_9_1","first-page":"137","volume-title":"OSDI'04","author":"Dean J.","year":"2004"},{"key":"e_1_3_2_1_10_1","doi-asserted-by":"crossref","DOI":"10.1111\/j.2517-6161.1977.tb01600.x","article-title":"Maximal Likelihood from Incomplete Data Via the EM Algorithm","author":"Dempster A.P.","year":"1977","journal-title":"Journal of the Royal Statistical Society, Ser B(39):1--38"},{"key":"e_1_3_2_1_11_1","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9780511790492"},{"key":"e_1_3_2_1_12_1","doi-asserted-by":"publisher","DOI":"10.1145\/1099554.1099726"},{"key":"e_1_3_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/asi.10256"},{"key":"e_1_3_2_1_14_1","doi-asserted-by":"publisher","DOI":"10.1145\/775047.775067"},{"key":"e_1_3_2_1_15_1","doi-asserted-by":"publisher","DOI":"10.1145\/1135777.1135835"},{"key":"e_1_3_2_1_16_1","doi-asserted-by":"publisher","DOI":"10.1145\/1008992.1009026"},{"key":"e_1_3_2_1_17_1","doi-asserted-by":"publisher","DOI":"10.5555\/108235.108253"},{"key":"e_1_3_2_1_18_1","volume-title":"Prentice-Hall Inc.","author":"Rocchio J.","year":"1971"},{"key":"e_1_3_2_1_19_1","doi-asserted-by":"publisher","DOI":"10.1145\/988672.988764"},{"key":"e_1_3_2_1_20_1","doi-asserted-by":"publisher","DOI":"10.1145\/1008992.1009083"},{"key":"e_1_3_2_1_21_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICDM.2006.105"},{"key":"e_1_3_2_1_22_1","doi-asserted-by":"publisher","DOI":"10.1145\/371920.371974"},{"key":"e_1_3_2_1_23_1","doi-asserted-by":"publisher","DOI":"10.1145\/1277741.1277771"},{"key":"e_1_3_2_1_24_1","doi-asserted-by":"publisher","DOI":"10.1145\/1277741.1277809"},{"key":"e_1_3_2_1_25_1","doi-asserted-by":"publisher","DOI":"10.1007\/11880592_3"}],"event":{"name":"WWW '09: The 18th International World Wide Web Conference","location":"Madrid Spain","acronym":"WWW '09","sponsor":["SIGWEB ACM Special Interest Group on Hypertext, Hypermedia, and Web","ACM Association for Computing Machinery"]},"container-title":["Proceedings of the 18th international conference on World wide web"],"original-title":[],"link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/1526709.1526736","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/1526709.1526736","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,18]],"date-time":"2025-06-18T13:30:29Z","timestamp":1750253429000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/1526709.1526736"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,4,20]]},"references-count":25,"alternative-id":["10.1145\/1526709.1526736","10.1145\/1526709"],"URL":"https:\/\/doi.org\/10.1145\/1526709.1526736","relation":{},"subject":[],"published":{"date-parts":[[2009,4,20]]},"assertion":[{"value":"2009-04-20","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}