5.4.5 - Factor Analysis - INPUT - Data Selection - Teradata Warehouse Miner

Teradata Warehouse Miner User Guide - Volume 3Analytic Functions

Product
Teradata Warehouse Miner
Release Number
5.4.5
Published
February 2018
Language
English (United States)
Last Update
2018-05-04
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  1. On the Factor Analysis dialog box, click INPUT.
  2. Click data selection.
    Factor Analysis > Input > Data Selection

  3. On this screen, select:
    • Select Input Source — Users may select between different sources of input, Table, Matrix or Analysis.

      By selecting the Input Source Table, the user can select from available databases, tables (or views) and columns in the usual manner. (In this case a matrix will be dynamically built and discarded when the algorithm completes execution).

      By selecting the Input Source Matrix, the user can select from available matrices created by the Build Matrix function. This has the advantage that the matrix selected for input is available for further analysis after completion of the algorithm, perhaps selecting a different subset of columns from the matrix.

      By selecting the Input Source Analysis, the user can select directly from the output of another analysis of qualifying type in the current project. (In this case, a matrix is dynamically built and discarded when the algorithm completes execution). Analyses that can be selected from directly include all of the Analytic Data Set (ADS) and Reorganization analyses (except Refresh). In place of Available Databases, the user may select from Available Analyses, while Available Tables then contains a list of all the output tables that will eventually be produced by the selected analysis.
      Since this analysis cannot select from a volatile input table, Available Analyses contains only those qualifying analyses that create an output table or view.
    • Select Columns From One Table
      • Available Databases (only for Input Source equal to Table) — All the databases that are available for the Factor analysis.
      • Available Matrices (only for Input Source equal to Matrix) — When the Input Source is Matrix, a matrix must first be built by the user with the Build Matrix function before Factor analysis can be performed. Select the matrix that summarizes the data to be analyzed.
        The matrix must have been built with more rows than columns selected or the Factor analysis will produce a singular matrix, causing a failure.
      • Available Analyses (only for Input Source equal to Analysis) — All the analyses that are available for the Factor analysis.
      • Available Tables (only for Input Source equal to Table or Analysis) — All the tables that are available for the Factor analysis.
      • Available Columns — All the columns that are available for the Factor analysis.
      • Selected Columns — Select columns by highlighting and then either dragging and dropping into the Selected Columns window, or click on the arrow button to move highlighted columns into the Selected Columns window. The algorithm requires that the selected columns be of numeric type (or contain numbers in character format).