134Mining Your Own Business in Telecoms Using DB2 Intelligent Miner for Data
In a series of experiments we found out, that a high share of fraud cases can be
recognized quite early, for instance, by the end of thefirst week of operation of a
fraudulent premium number. From the CDR fields a weekly connection view
containing aggregated data must be generated containing all information useful
for indication of fraudulent calls.
7.3.1 Preparing and aggregating the data
Preparing and aggregating the data to build a weekly connection view is done by
defining several tables collecting measured values for the whole week (as sum of
costs, duration of ...
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