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SAP HANA Predictive Analysis Library (PAL)

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3.6.3 Convert Category Type to Binary Vector<br />

This function converts category type to binary vector with numerical columns.<br />

Assume that you have a Gender attribute which has two distinct values: Female and Male. You can convert it<br />

into:<br />

Table 316:<br />

Gender Gender_1 Gender_2<br />

Female 1 0<br />

Male 0 1<br />

Female 1 0<br />

Prerequisites<br />

●<br />

●<br />

●<br />

The input data must contain an ID column, and the ID column must be the first column.<br />

The other columns of the input table must be of the integer, varchar, or nvarchar type.<br />

The input data does not contain any null value.<br />

CONV2BINARYVECTOR<br />

Procedure Generation<br />

CALL SYS.AFLLANG_WRAPPER_PROCEDURE_CREATE (‘AFL<strong>PAL</strong>’, ‘CONV2BINARYVECTOR’,<br />

‘’, '', );<br />

The signature table should contain the following records.<br />

Table 317:<br />

Position Schema Name Table Type Name Parameter Type<br />

1 IN<br />

2 IN<br />

3 <br />

OUT<br />

Procedure Calling<br />

CALL .(, , ) with overview;<br />

The procedure name is the same as specified in the procedure generation.<br />

The input, parameter, and output tables must be of the types specified in the signature table.<br />

Signature<br />

<strong>SAP</strong> <strong>HANA</strong> <strong>Predictive</strong> <strong>Analysis</strong> <strong>Library</strong> (<strong>PAL</strong>)<br />

<strong>PAL</strong> Functions P U B L I C 441

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