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New Features in Netezza Analytics Release 2.0

Call Interface Changes to Analytic Functions

The call interface to many analytic functions has changed in this release. The modifications

were implemented to provide uniformity and consistency between all algorithms and also to

accomplish the following goals:

 Support for definition of nominal and numeric attributes, providing uniform processing

for different data types

 Support for column properties

 Support for “check mode” facility when calling algorithms

 Support for handling missing values (see the new feature description Missing Value

Support in Analytics Functions)

 Standardized event messages and parameter validation

In the calls to analytic stored procedures, changes fall into the following categories:

 Elimination of specific named parameters that identify column(s) to be used by the algo-

rithm (in various roles). Instead input columns are provided in the 'incolumn' parameter.

 Addition of 'roles' associated with columns

 Situations where 'outtable' or other named parameter has been replaced by 'model' in

cases where the output from an algorithm is a model.

 Combining multiple values for 'class', 'class1', 'class2' parameters into one 'class' pa-

rameter.

Backward Compatibility

Not all algorithms have backward compatibility with the changed call interface. For those

that do not (listed in the table below), you must change your calls. It is highly recommend-

ed that you also change calls for those algorithms that do provide backward compatibility,

since in the future this backward compatibility will be deprecated.

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