September 2001
Intermediate to advanced
182 pages
4h 16m
English
Content preview from Mining Your Own Business in Telecoms Using DB2 Intelligent Miner for Data
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Chapter 7. Can you determine the characteristics of known and unknown fraudulent behavior? 133
The phone company records for each phone call a Call Detailed Record (CDR).
The CDR is stored in a database and normally consists of about 50-100 fields.
This database is the starting-point for the detection of fraud.
Table 7-1 presents the most important fields from a total of about 50 fields in a
CDR.
Table 7-1 Variables from CDR
7.3 Sourcing and preprocessing the data
To create our data model we have to take the raw data that we collect and
convert it into the format required by the data models. We call this stage in the
sourcing and preprocess
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