PLS - Methods for Specifying Designs

STATISTICA Partial Least Squares (PLS) and General Linear Model (GLM) (as well as Generalized Linear/Nonlinear Models (GLZ), General Regression Models (GRM), General Discriminant Analysis (GDA), and ANOVA) provide three alternate methods for specifying designs: via Analysis Wizards, Quick Specs dialog boxes, and Analysis Syntax. Note that even if you choose one of the first two user-interface methods, you can always switch to the PLS Analysis Syntax Editor dialog box where the PLS syntax describing your current design (as specified via Analysis Wizards or Quick Specs dialog boxes) will be displayed for further editing; the PLS Analysis Syntax Editor dialog also contains options for saving the design syntax in a text file for repeated use.

Analysis Wizards. The simplest method for specifying designs is via Analysis Wizards. When you select this Specification method from the PLS Startup Panel - Quick tab, STATISTICA will guide you through a series of dialog boxes for specifying the desired type of design. Via this user interface, you can specify all univariate and multivariate (multiple dependent (response) variables) designs.

Quick specs dialog box. This user interface will present a Quick Specs dialog box tailored to the specific design selected in the Type of analysis list on the PLS Startup Panel - Quick tab. For example, if you choose a Multiple regression design from the PLS Startup Panel - Quick tab, then the Quick Specs dialog will provide options for selecting the dependent variables and a list of continuous predictor variables (independent variables or covariates); if you select a Factorial ANOVA from the PLS Startup Panel - Quick tab, then the Quick Specs dialog box will provide options for selecting the dependent variables and a list of categorical predictor variables (factors, or grouping variables), and so on. If you have some experience with using other STATISTICA modules, this user interface will appear most familiar to you.

Syntax editor dialog box. This user interface is used to type in directly the command syntax for specifying any type of regression or experimental design using the PLS syntax conventions in the PLS Analysis Syntax Editor. Note that the PLS syntax conventions are essentially identical to the GLM syntax conventions (see General Linear Model (GLM)), with only a few additions and omissions.

Specification methods and dialog boxes. For a detailed explanation of each method or dialog box, click on the appropriate link.

See also, PLS Index.