Monetary cost of extra disk storage requirements Performance requirements in terms of number of I/O operations Performance when a disk has failed. Performances during rebuild. What are the different phases in Knowledge discovery? Data Selection Selecting data specific item or category – Data cleansing Correcting invalid data or eliminating records – Enrichment Enhancing data with additional sources of information – Data transformation and Encoding Reducing amount of data by generalization – Data mining Techniques to mine different rules and patterns – Reporting and Display of discovered information Displaying result as listings, – graphical outputs, summary tables or visualizations in a user understandable manner. What are the ways to represent knowledge extracted during data mining? Association rules Classification hierarchies Sequential patterns Patterns with in time series Categorization and Segmentation 11. What are the two types of views in multidimensional model? i)Roll-up display Move sup the hierarchy, by grouping into larger units along a – dimension. This is a coarser grained view, which increases generalization. ii)Drill-down Display This furnishes a finer-grained view. – What are the Applications of Data warehousing? OLAP (Online Analytical Processing) DSS (Decision Support System)/EIS (Executive Information Systems) Data Mining
Monetary cost of extra disk storage requirements Performance requirements in terms of number of I/O operations Performance when a disk has failed. Performances during rebuild. What are the different phases in Knowledge discovery? Data Selection – Selecting data specific item or category Data cleansing – Correcting invalid data or eliminating records Enrichment – Enhancing data with additional sources of information Data transformation and Encoding – Reducing amount of data by generalization Data mining – Techniques to mine different rules and patterns Reporting and Display of discovered information – Displaying result as listings, graphical outputs, summary tables or visualizations in a user understandable manner. What are the ways to represent knowledge extracted during data mining? Association rules Classification hierarchies Sequential patterns Patterns with in time series Categorization and Segmentation 11. What are the two types of views in multidimensional model? i)Roll-up display – Move sup the hierarchy, by grouping into larger units along a dimension. This is a coarser grained view, which increases generalization. ii)Drill-down Display – This furnishes a finer-grained view. What are the Applications of Data warehousing? OLAP (Online Analytical Processing) DSS (Decision Support System)/EIS (Executive Information Systems) Data Mining
CS6302-III%20SEM.docx