The Deployment tab in the Stream Options dialog box allows you to specify options for deploying the stream. You can deploy either as a stream or as a scenario.
When you deploy as a stream, you can open and modify the stream in the thin-client application IBM® SPSS® Modeler Advantage. The stream is stored in the repository as afile with the extension.str.
Deploying as a scenario stores the stream in the repository as afile with the extension.scn. Doing so also enables a stream to be used by Predictive Applications version 5.
Whether you deploy as a stream or as a scenario, you can take advantage of the additional functionality available with IBM® SPSS® Collaboration and Deployment Services, such as multi-user access, automated scoring, model refresh, and Champion Challenger analysis. From the Deployment tab, you can also preview the stream description that IBM® SPSS® Modeler creates for the stream. For more information, see the topicStream Descriptionsin Chapter 5 on p. 74.
Note: To ensure consistent access to enterprise data, a stream that is deployed as a scenario must access its source data through IBM® SPSS® Collaboration and Deployment Services Enterprise View, so in such a case the stream must include at least one Enterprise View source node within each designated scoring or modeling branch as applicable.
Figure 9-24
Stream Deployment options
Deployment type. Choose how you want to deploy the stream. All streams require a designated scoring node before they can be deployed; additional requirements and options depend on the deployment type.
<none>. The stream will not be deployed to the repository. All options are disabled except stream description preview.
Scoring Only. The stream is deployed to the repository when you click theStorebutton. Data can be scored using the node that you designate in theScoring nodefield.
Model Refresh. Same as for Scoring Only but in addition, the model can be updated in the repository using the objects that you designate in theModeling nodeandModel nuggetfields. Note: Automatic model refresh is not supported by default in IBM SPSS Collaboration and Deployment Services, so you must choose this deployment type if you want to use this feature when running a stream from the repository. For more information, see the topicModel Refreshon p. 190.
187 Using IBM SPSS Modeler with a Repository Scoring node. Select a graph, output or export node to identify the stream branch to be used for scoring the data. While the stream can actually contain any number of valid branches, models, and terminal nodes, one and only one scoring branch must be designated for purposes of deployment. This is the most basic requirement to deploy any stream.
Scoring Parameters. Allows you to specify parameters that can be modified when the scoring branch is run. For more information, see the topicScoring and Modeling Parameterson p. 188. Modeling node.For model refresh, specifies the modeling node used to regenerate or update the model in the repository. Must be a modeling node of the same type as that specified forModel nugget.
Model Build Parameters.Allows you to specify parameters that can be modified when the modeling node is run. For more information, see the topicScoring and Modeling Parameterson p. 188. Model nugget. For model refresh, specifies the model nugget that will be updated or regenerated each time the stream is updated in the repository (typically as part of a scheduled job). The model must be located on the scoring branch. While multiple models may exist on the scoring branch, only one can be designated. Note that when the stream is initially created this may effectively be a placeholder model that is updated or regenerated as new data is available.
Deploy as stream. Click this option if you want to use the stream with IBM SPSS Modeler Advantage or IBM SPSS Collaboration and Deployment Services (and see note following). Deploy as scenario.Click this option if you want to use the stream with IBM SPSS Collaboration and Deployment Services or Predictive Applications version 5 (and see note following).
Check. Click this button to check whether this is a valid stream for deployment. All streams must have a designated scoring node before they can be deployed. If you are deploying as a scenario, the stream must also contain a valid Enterprise View source node. Error messages are displayed if these conditions are not satisfied.
Store. Deploys the stream if it is valid. If not, an error message is displayed. Click theFixbutton, correct the error and try again.
Preview Stream Description. Enables you to view the contents of the stream description that SPSS Modeler creates for the stream. For more information, see the topicStream Descriptionsin Chapter 5 on p. 74.
Note: (Deploy as stream or scenario) Multiple Enterprise View nodes can be used within the modeling branch. If so, using a single data connection for all Enterprise View nodes within the branch is preferable in most cases, and is required for Champion Challenger analysis.
If Champion Challenger support is not required, different Enterprise View connections can be used within the same branch, as long as the connections vary by data provider definition (DPD) only.
These limitations apply within a given branch only. Between the scoring and model building branches, different Enterprise View connections can be used without such restrictions.
Scoring and Modeling Parameters
When deploying a stream to IBM SPSS Collaboration and Deployment Services, you can choose which parameters can be viewed or edited each time the model is updated or scored. For example, you might specify maximum and minimum values, or some other value that may be subject to change each time a job is run.
Figure 9-25
Scoring Parameters dialog box
E To make a parameter visible so it can be viewed or edited after the stream is deployed, select it from the list in the dialog box.
The list of available parameters is defined on the Parameters tab in the stream properties dialog box. For more information, see the topicSetting Stream and Session Parametersin Chapter 5 on p. 68.