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- W2130909521 abstract "People nowadays are relying more and more on OLAP data to find business solutions. A typical OLAP data cube usually contains four to eight dimensions, with two to six hierarchical levels and tens to hundreds of categories for each dimension. It is often too large and has too many levels for users to browse it effectively. In this paper we propose a new definition of exception. This integrated system prototype will guide users to efficiently explore exceptions in data cubes. It automatically computes the degree of exceptions for cube cells at different aggregation levels. Different statistical methods such as log-linear model, adapted linear model and Z-tests are used to compute the degree of exceptions. We present algorithms and address the issue of improving the performance on large data sets." @default.
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- W2130909521 date "2008-05-01" @default.
- W2130909521 modified "2023-09-26" @default.
- W2130909521 title "Multi level exceptions mining in OLAP data cubes" @default.
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- W2130909521 doi "https://doi.org/10.1109/iccce.2008.4580704" @default.
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