Reference Data Guide

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Overflow Label

When a transformation cannot apply a label to an input data value, the transformation treats the data value as overflow data. The Labeler transformation applies an overflow label to any data value that it cannot identify. The Parser transformation writes any data value that it cannot identify to an overflow port.

The following table shows how a Parser transformation might use an overflow port to parse address data elements that a probabilistic model does not recognize:

Input Data	Street_Name port	Street_Descriptor port	Overflow port
Park Place	Park	Place	No overflow data
Park Avenue	Park	Avenue	No overflow data
Madison Avenue	Madison	Avenue	No overflow data
Central Park	Central	Park	No overflow data
Washington Square Park	Washington	Square	Park
Madison Square Garden	Madison	Square	Garden

The Parser transformation also writes values to an overflow port when the number of input values is greater than the number of labels in the model. Before you use a probabilistic model in a transformation, review the input data and verify that the model contains the correct number of label values.

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Reference Data Guide

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Overflow Label

Overflow Label