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It is in this sense that the similarity, which provides more results ranked according to their utilities, is used. This paper first presents the Cloud ontology on which the authors' work is based. It then defines and compares between two Cloud service discovery methods which are: the discovery based on query languages and the discovery based on similarity. To show the efficiency of the search based on similarity, the authors propose a search engine that allows the users to query services using a simple to use interface.<\/jats:p>","DOI":"10.4018\/ijssmet.2017070104","type":"journal-article","created":{"date-parts":[[2017,5,31]],"date-time":"2017-05-31T13:50:38Z","timestamp":1496238638000},"page":"60-78","source":"Crossref","is-referenced-by-count":4,"title":["On the Use of Similarity or Query Languages in Cloud Discovery Based on Ontology"],"prefix":"10.4018","volume":"8","author":[{"given":"Rawand","family":"Guerfel","sequence":"first","affiliation":[{"name":"ENIT, Universit\u00e9 de Tunis El Manar, Tunis, Tunisia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zohra","family":"Sba\u00ef","sequence":"additional","affiliation":[{"name":"ENIT, Tunis, Tunisia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rahma","family":"Ben Ayed","sequence":"additional","affiliation":[{"name":"ENIT, Universit\u00e9 de Tunis El Manar, Tunis, Tunisia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"IJSSMET.2017070104-0","doi-asserted-by":"publisher","DOI":"10.1109\/EDOC.2015.30"},{"issue":"1","key":"IJSSMET.2017070104-1","first-page":"83","article-title":"Ontology-based cloud services representation. 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