The data for a project might have changed since the last time you forecasted your data using SAS Forecast Server. Example: the data includes a new BY variable (such as a new product), or new observations (such as sales data for the past three months).

When you reforecast a project, SAS^® Forecast Studio, or SAS Forecast Studio for Desktop, recognizes that the project data changed. In the Update Project Data dialog box, you can choose whether to use the updated version of the data.

In the Update Project Data dialog box, you are given the following choices:

• Diagnose
• Select
• Fit
• Forecast
• Cancel

Diagnose and Select each have the option of resetting all series to "automatic selection".

A user-created model refers to a model that you add in the Modeling View. (To create a user-created model, click Add model. Select either Create and fit new model, or Fit an existing model. Choose Set this model as forecast model.)

If you choose Diagnose, then a non-user-created model is not retained as the champion model.

If you choose Diagnose, then all series are analyzed for trends, seasonality, cyclicity, possible transformation, and so on. Any system-generated models that are appropriate for the series are created. The best-performing model is selected, parameters are estimated, and forecasts are made.

• If you select Reset all series to "automatic selection", then user-created models might not be kept as the champion model, but they are displayed in the Modeling View.
• If you do not select Reset all series to "automatic selection", then user-created models are retained as champion models and their parameter estimates are updated.

If you choose Select, then appropriate models (models that were deemed appropriate for the series the last time a Diagnose was chosen) are evaluated against the data. Using the model selection criterion, the best-performing model is chosen. Parameters are estimated and forecasts are made.

• If you select Reset all series to "automatic selection", then user-created models might not be kept as the champion model, but they are displayed in the Modeling View.
• If you do not select Reset all series to "automatic selection", then user-created models are retained as champion models, and their parameter estimates are updated.

If you choose Fit, then the parameter estimates are updated in each champion model (whether the model was automatically chosen by the software, or is a user-created model). Forecasts are made.

If you choose Forecast, then the parameter estimates are not updated. The champion model and its parameter estimates are retained (whether the model was automatically chosen by the software, or is a user-created model). Forecasts are made.

If you choose Cancel, then the project prior to the data change is displayed.

Note: If you select Fit, then a message is displayed:

If you choose No, then Fit is performed as originally intended. If you choose Yes, then Select is run, and the series are not reset to automatic selection.

Operating System and Release Information

Product Family	Product	System	SAS Release
			Reported	Fixed*
SAS System	SAS Forecast Studio	Microsoft Windows 8.1 Pro
		Microsoft® Windows® for x64
		Microsoft Windows 8 Enterprise 32-bit
		Microsoft Windows 8 Enterprise x64
		Microsoft Windows 8 Pro 32-bit
		Microsoft Windows 8 Pro x64
		Microsoft Windows 8.1 Enterprise x64
		Microsoft Windows 8.1 Enterprise 32-bit
		Microsoft Windows 8.1 Pro 32-bit
		Microsoft Windows 95/98
		Microsoft Windows 2000 Advanced Server
		Microsoft Windows 2000 Datacenter Server
		Microsoft Windows 2000 Server
		Microsoft Windows 2000 Professional
		Microsoft Windows NT Workstation
		Microsoft Windows Server 2003 Datacenter Edition
		Microsoft Windows Server 2003 Enterprise Edition
		Microsoft Windows Server 2003 Standard Edition
		Microsoft Windows Server 2003 for x64
		Microsoft Windows Server 2008
		Microsoft Windows Server 2008 R2
		Microsoft Windows Server 2008 for x64
		Microsoft Windows Server 2012 Datacenter
		Microsoft Windows Server 2012 R2 Datacenter
		Microsoft Windows Server 2012 R2 Std
		Microsoft Windows Server 2012 Std
		Microsoft Windows XP Professional
		Windows 7 Enterprise 32 bit
		Windows 7 Enterprise x64
		Windows 7 Home Premium 32 bit
		Windows 7 Home Premium x64
		Windows 7 Professional 32 bit
		Windows 7 Professional x64
		Windows 7 Ultimate 32 bit
		Windows 7 Ultimate x64
		Windows Millennium Edition (Me)
		Windows Vista
		Windows Vista for x64

* For software releases that are not yet generally available, the Fixed Release is the software release in which the problem is planned to be fixed.

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This note gives an explanation of the different methods that are available when reforecasting a project in SAS Forecast Server

Type:	Usage Note
Priority:

Date Modified:	2017-01-26 12:56:37
Date Created:	2014-06-24 09:51:24