{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,4]],"date-time":"2026-04-04T06:15:32Z","timestamp":1775283332025,"version":"3.50.1"},"publisher-location":"Boston, MA","reference-count":3,"publisher":"Springer US","isbn-type":[{"value":"9780387355443","type":"print"},{"value":"9780387399409","type":"electronic"}],"license":[{"start":{"date-parts":[[2009,1,1]],"date-time":"2009-01-01T00:00:00Z","timestamp":1230768000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2009,1,1]],"date-time":"2009-01-01T00:00:00Z","timestamp":1230768000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2009]]},"DOI":"10.1007\/978-0-387-39940-9_930","type":"book-chapter","created":{"date-parts":[[2009,9,16]],"date-time":"2009-09-16T08:14:44Z","timestamp":1253088884000},"page":"2168-2169","source":"Crossref","is-referenced-by-count":2,"title":["Probability Ranking Principle"],"prefix":"10.1007","author":[{"given":"Ben","family":"He","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","reference":[{"key":"930_CR1_930","doi-asserted-by":"crossref","first-page":"294","DOI":"10.1108\/eb026647","volume":"33","author":"S.E. Robertson","year":"1977","unstructured":"Robertson S.E. The probability ranking principle in IR. J. Doc., 33:294\u2013304, 1977.","journal-title":"J. Doc."},{"key":"930_CR2_930","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1002\/asi.4630270302","volume":"27","author":"S.E. Robertson","year":"1977","unstructured":"RobertsonS.E. and Sparck-Jones K. Relevance weighting of search terms. J. Am. Soc. Inf. Sci., 27:129\u2013146, 1977.","journal-title":"J. Am. Soc. Inf. Sci."},{"key":"930_CR3_930","doi-asserted-by":"crossref","unstructured":"Robertson S.E. and Walker S. On relevance weights with little relevance information. In Proc. 20th Annual Int. ACM SIGIR Conf. on Research and Development in Information Retrieval, 1997, pp. 16\u201324.","DOI":"10.1145\/278459.258529"}],"container-title":["Encyclopedia of Database Systems"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/978-0-387-39940-9_930","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,6,1]],"date-time":"2020-06-01T04:12:44Z","timestamp":1590984764000},"score":1,"resource":{"primary":{"URL":"http:\/\/link.springer.com\/10.1007\/978-0-387-39940-9_930"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009]]},"ISBN":["9780387355443","9780387399409"],"references-count":3,"URL":"https:\/\/doi.org\/10.1007\/978-0-387-39940-9_930","relation":{},"subject":[],"published":{"date-parts":[[2009]]}}}