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Abstract : |
Huge amounts of data have been stored in databases, data warehouses, geographic information systems, and other information repositories, and this data is still growing rapidly [4]. Companies are building data warehouses capable of storing hundreds of terabytes of data related to natural resource exploration; astronomical databases are measured in terabytes in size; and it is expected that the NASA Earth Observing System will transmit about 50 gigabytes of image data per hour. This huge amount of data has posed great challenges to traditional data analysis methods for information and knowledge extraction. Data mining, or knowledge discovery in databases, |