Predictor (Regression)

enables you to predict the target field for an unlabeled document.

Overview

Predictor (Regression) enables you to predict the target field for an unlabeled document.

For this Snap, an unlabeled document is defined as one that does not have a label field. So, the Snap reads this unlabeled document and predicts the target field. Predictions are made based on the regression model built by the Trainer (Regression) Snap.


Predictor (Regression) Snap dialog

Prerequisites

  • The data from upstream Snap must be in tabular format (no nested structure).

Limitations and known issues

None.

Snap views

View Description Examples of upstream and downstream Snaps
Input #1 An unlabeled document that requires prediction(s). Any Snap that generates an unlabeled document document. Examples:
Input #2 The regression model. Any Snap that reads and outputs the regression model. Examples: A combination of File Reader and JSON Parser
Output Predictions from the regression model based on the input document. Any Snap that uses the predicted result. Examples:
Error

Error handling is a generic way to handle errors without losing data or failing the Snap execution. You can handle the errors that the Snap might encounter when running the pipeline by choosing one of the following options from the When errors occur list under the Views tab. The available options are:

  • Stop Pipeline Execution Stops the current pipeline execution when the Snap encounters an error.
  • Discard Error Data and Continue Ignores the error, discards that record, and continues with the remaining records.
  • Route Error Data to Error View Routes the error data to an error view without stopping the Snap execution.

Learn more about Error handling in Pipelines.

Snap settings

Note:
  • Suggestion icon (): Indicates a list that is dynamically populated based on the configuration.
  • Expression icon (): Indicates whether the value is an expression (if enabled) or a static value (if disabled). Learn more about Using Expressions in SnapLogic.
  • Add icon (): Indicates that you can add fields in the field set.
  • Remove icon (): Indicates that you can remove fields from the field set.
Field / Field set Type Description
Label String Required. Specify a unique name for the Snap. Modify this to be more appropriate, especially if there are more than one of the same Snap in the pipeline.
Snap execution Dropdown list Select one of the three modes in which the Snap executes.
Available options are:
  • Validate & Execute. Performs limited execution of the Snap and generates a data preview during pipeline validation. Subsequently, performs full execution of the Snap (unlimited records) during pipeline runtime.
  • Execute only. Performs full execution of the Snap during pipeline execution without generating preview data.
  • Disabled. Disables the Snap and all Snaps that are downstream from it.

Troubleshooting

None.