教學目標：Lots of data is being collected and warehoused.Computers have become cheaper and more powerful. Data collected and stored at enormous speeds (GB/hour). Data mining may help scientists in classifying and segmenting data in Hypothesis Formation. There is often information “hidden” in the data that is not readily evident. Human analysts may take weeks to discover useful information Much of the data is never analyzed at all. Non-trivial extraction of implicit, previously unknown and potentially useful information from data. Exploration & analysis, by automatic or semi-automatic means, of large quantities of data in order to discover meaningful patterns.