Chantola Kit

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The business intelligence and decision-support systems used in many application domains casually rely on data warehouses , which are decision-oriented data repositories mod-eled as multidimensional (MD) structures. MD structures help navigate data through hierarchical levels of detail. In many real-world situations, hierarchies in MD models are complex,(More)
Business Intelligence plays an important role in decision making. Based on data warehouses and Online Analytical Processing, a business intelligence tool can be used to analyze complex data. Still, summarizability issues in data warehouses cause ineffective analyses that may become critical problems to businesses. To settle this issue, many researchers have(More)
This paper discusses algorithms that efficiently compute structural grouping over XML data, which is a core operation in the interactive analysis of XML data, called "XML-OLAP". XML-OLAP allows interactive analysis over XML data to discover important information, and aggregation computation according to XML's tree hierarchy or <i>TOPOLOGICAL ROLLUP</i>,(More)
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