Chapter 1

data mining is knowledge discovery from data;

The knowledge discovery process is an iterative sequence of 7 steps:

  1. data cleaning: to remove noise and inconsistent data
  2. data integration: where multiple data sources may be combined (step1 and step 2 can be seen as one step)
  3. data selection: where data relevant to the analysis task are retrieved from the database
  4. data transformation:

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