{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T07:27:27Z","timestamp":1768634847173,"version":"3.49.0"},"publisher-location":"New York, NY, USA","reference-count":3,"publisher":"ACM","license":[{"start":{"date-parts":[[2007,7,23]],"date-time":"2007-07-23T00:00:00Z","timestamp":1185148800000},"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":[[2007,7,23]]},"DOI":"10.1145\/1277741.1277939","type":"proceedings-article","created":{"date-parts":[[2008,9,18]],"date-time":"2008-09-18T11:59:52Z","timestamp":1221739192000},"page":"847-848","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":34,"title":["Heads and tails"],"prefix":"10.1145","author":[{"given":"Doug","family":"Downey","sequence":"first","affiliation":[{"name":"University of Washington, Seattle, WA"}]},{"given":"Susan","family":"Dumais","sequence":"additional","affiliation":[{"name":"Microsoft Research, Redmond, WA"}]},{"given":"Eric","family":"Horvitz","sequence":"additional","affiliation":[{"name":"Microsoft Research, Redmond, WA"}]}],"member":"320","published-online":{"date-parts":[[2007,7,23]]},"reference":[{"key":"e_1_3_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/347090.347176"},{"key":"e_1_3_2_1_2_1","volume-title":"Proc. of UAI","author":"Hofmann T.","year":"1999","unstructured":"T. Hofmann . Probabilistic latent semantic analysis . In Proc. of UAI , Stockholm , 1999 . T. Hofmann. Probabilistic latent semantic analysis. In Proc. of UAI, Stockholm, 1999."},{"key":"e_1_3_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.5555\/317328.317340"}],"event":{"name":"SIGIR07: The 30th Annual International SIGIR Conference","location":"Amsterdam The Netherlands","acronym":"SIGIR07","sponsor":["ACM Association for Computing Machinery","SIGIR ACM Special Interest Group on Information Retrieval"]},"container-title":["Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval"],"original-title":[],"link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/1277741.1277939","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/1277741.1277939","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,18]],"date-time":"2025-06-18T14:58:19Z","timestamp":1750258699000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/1277741.1277939"}},"subtitle":["studies of web search with common and rare queries"],"short-title":[],"issued":{"date-parts":[[2007,7,23]]},"references-count":3,"alternative-id":["10.1145\/1277741.1277939","10.1145\/1277741"],"URL":"https:\/\/doi.org\/10.1145\/1277741.1277939","relation":{},"subject":[],"published":{"date-parts":[[2007,7,23]]},"assertion":[{"value":"2007-07-23","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}