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Case Base
MiningMart
Case
ModelCaseTelecom
Chain
HandleServicesData

Step: ComputeLengthOfService

Name ComputeLengthOfService
Belongs to Case ModelCaseTelecom
Uses Operator GenericFeatureConstruction
Belongs to Chain HandleServicesData
Concepts of resulting Data Model InputCallDetails
InputCustomers
InputRevenues
ServicesToPrepare
Has Parameters SQL_String
TheInputConcept
TheOutputAttribute0
TheTargetAttribute0

M4 Documentation:

The difference between the year of service end and the year of service beginning gives the time each customer has spent with the company, in years. For those customers who are still with the company, the current year (assumed to be 2001) is taken rather than the year of service end which does not exist.