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Secondly, they suggest new visualization operators for OLAP query results by introducing the concept of Tag clouds as a means to help decision-makers to display OLAP results in an intuitive format and focus on main concepts. The authors have developed a software prototype called MQF (Multidimensional Query based on Facets) to support their proposals and then tested it on documents from the PubMed collection.<\/p>","DOI":"10.4018\/ijgc.2018070104","type":"journal-article","created":{"date-parts":[[2019,1,7]],"date-time":"2019-01-07T20:48:24Z","timestamp":1546894104000},"page":"46-68","source":"Crossref","is-referenced-by-count":0,"title":["CobWeb Multidimensional Model and Tag-Cloud Operators for OLAP of Documents"],"prefix":"10.4018","volume":"9","author":[{"given":"Omar","family":"Khrouf","sequence":"first","affiliation":[{"name":"University of Sfax, MIR@CL Laboratory, Sfax, Tunisia"}]},{"given":"Kais","family":"Khrouf","sequence":"additional","affiliation":[{"name":"Jouf University, Sakaka, Saudi Arabia"}]},{"given":"Jamel","family":"Feki","sequence":"additional","affiliation":[{"name":"FCIT, University of Jeddah, Jeddah, Saudi Arabia"}]}],"member":"2432","reference":[{"key":"IJGC.2018070104-0","unstructured":"Aknouche, R., Asfari, O., Bentayeb, F., & Boussaid, O. 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