IMsProblemCalculationSettings.CorrectStubPeriod

Syntax

Description

The CorrectStubPeriod property determines parameters of date extension for modeling problem if its periods go beyond source periods.

Comments

By default, periods cannot be extended, and the user is given a warning that modeling problem periods do not correspond to its sources, that is, the property is set to MsCorrectStubPeriod.NotCorrect.

When the property is used, only modeling problem sources that are time series databases are taken into account.

If modeling problem calculates models for which their proper calculation periods are set, the data is loaded taking into account model periods. For example, there are following sources:

The TSDB1 time series database with the period 2010 - 2020.
The TSDB2 time series database with the period 2005 - 2015.
The TSDB3 time series database with the period 2007 - 2017.
The TSDB4 time series database with the period 2004 - 2021.

All sources contain data by annual frequency and the same attributes: Country and Indicator.

There is model which on modeling problem calculation will be calculated by its proper periods:

{TSDB4!Albania|BCA[t]} = {TSDB1!Albania|BCA[t]} +{TSDB2!Albania|BCA[t]}+ {TSDB3!Albania|BCA[t]}

Series used in the expression contain the following data:

Series/Date	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
TSDB1!Albania\|BCA						1	2	3	4	5	6	7	8	9	10	11
TSDB2!Albania\|BCA	1	2	3	4	5	6	7	8	9	10	11
TSDB3!Albania\|BCA			1	2	3	4	5	6	7	8	9	10	11

Consider an example of forming model periods:

Week periods	How the property is used	How loading periods will be determined, how model will be calculated
Identification start - 2004 Identification end - 2021 End 2021	NotCorrect	The warning that calculation periods are out of source periods (TSDB1, TSDB2, TSDB3) will be received.
	CorrectProblemPeriod	Calculation/loading periods will be straightened by crossing period of the 2010 - 2015 periods.
	CorrestStubPeriod	Source periods will be extended, the loading period is 2004 - 2021.

The total series if the property is set to MsCorrectStubPeriod.CorrectProblemPeriod:

Year	2010	2011	2012	2013	2014	2015
Total series	11	14	17	20	23	26

The total series if the property is set to MsCorrectStubPeriod.CorrestStubPeriod:

Year	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Total series		1	2	4	6	8	11	14	17	20	23	26	17	19	9	10	11

Similar results can be obtained if autoperiods are used. For example, if Today is considered as 2014 year, the autoperiods can be the following:

Identification start: from identification end - 17.
Identification end: today + 7.
End: today + 7.
Identification start: today - 10.
Identification end: from identification start + 17.
End: from identification end + 0.

Example

The property use is given in the example for IMsProblemCalculationSettings.DefaultLevel.