The following table shows which control statements are required (Req) or Optional (Optl) for processing each of the Forecast Algorithms.
|
FORECAST |
FORECAST Methods |
||
|
Control Statements |
Smooth |
Line |
Copy |
|
ORD_TYPE |
Optl |
Optl |
Optl |
|
ELEMENT |
Optl |
Optl |
Optl |
|
QUALIFIER |
Optl |
Optl |
Optl |
|
STRUCT# (1 - 5) |
Optl |
Optl |
Optl |
|
START_PERIOD |
Req |
Req |
Req |
|
END_PERIOD |
Req |
Req |
Req |
|
NUMBER_TO_FORECAST |
Req |
Req |
N/A |
|
AVERAGE |
Req |
Req |
Req |
|
ALGORITHM |
Req |
Req |
Req |
|
MODIFIER |
Req |
Req |
N/A |
|
KEEP_STRUCTURE |
Req |
Req |
N/A |
|
ALPHA |
Req |
N/A |
N/A |
|
DELTA |
Req |
N/A |
N/A |
|
VERSION |
Req |
Req: |
Req |
Once information needed to generate the CCCMOD table is specified, the periods requested from the CCCTAB are used by the SMOOTH and LINE algorithms to project future periods. The first projected period is the period following the period specified for the END_PERIOD control statement. Subsequent periods follow. For example, if 001 is specified for the START_PERIOD, 004 is specified for the END_PERIOD, and 002 is specified for the NUMBER_TO_FORECAST control statement, the periods forecasted are periods 5 and 6.
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