In this demonstration we present myOLAP, a Java-based tool that allows OLAP analyses to be personalized and enhanced by expressing "soft" query constraints in the form of user preferences. myOLAP is based on a novel preference algebra and a preference evaluation algorithm specifically devised for the OLAP domain. Preferences are formulated either visually or through an extension of the MDX language, and user interaction with the results is mediated by a visual graph-like structure that shows better-than relationships between different sets of data. The demonstration will show how analysis sessions can benefit from coupling ad-hoc preference constructors with the classical OLAP operators, and in particular how myOLAP supports users in expressing preference queries, analyzing their results, and navigating datacubes.
Preference-Based Datacube Analysis with myOLAP / P. Biondi; M. Golfarelli; S. Rizzi. - ELETTRONICO. - (2011), pp. 1328-1331. (Intervento presentato al convegno IEEE 27th International Conference on Data Engineering tenutosi a Hannover, Germany nel April 11-16, 2011) [10.1109/ICDE.2011.5767946].
Preference-Based Datacube Analysis with myOLAP
GOLFARELLI, MATTEO;RIZZI, STEFANO
2011
Abstract
In this demonstration we present myOLAP, a Java-based tool that allows OLAP analyses to be personalized and enhanced by expressing "soft" query constraints in the form of user preferences. myOLAP is based on a novel preference algebra and a preference evaluation algorithm specifically devised for the OLAP domain. Preferences are formulated either visually or through an extension of the MDX language, and user interaction with the results is mediated by a visual graph-like structure that shows better-than relationships between different sets of data. The demonstration will show how analysis sessions can benefit from coupling ad-hoc preference constructors with the classical OLAP operators, and in particular how myOLAP supports users in expressing preference queries, analyzing their results, and navigating datacubes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
