LMPCA
Introduction
Description
The LMPCA software program is a graphical user interface for fitting the Linked-Mode PARAFAC-PCA model (Wilderjans et al., 2009) to a coupled data set consisting of a real-valued three-way data array and a real-valued two-way data matrix that have one mode in common. Given such a coupled data set, the LMPCA software program estimates a user-specified range of Linked-Mode PARAFAC-PCA solutions with increasing complexities (i.e., number of components) by making use of a multistart alternating least squares algorithm. In order to help the user in determining the number of components that are present in the data, a scree plot and fit information for all complexities considered, are displayed in the output files that are created by the LMPCA program. The LMPCA program is available in MATLAB and as a standalone (".exe") application.
Authors
The LMPCA software program was created by Tom Wilderjans, Eva Ceulemans, Henk Kiers and Kristof Meers. The first and the fourth author are members of the Research Group of Research Group of Quantitative Psychology and Individual Differences of the Katholieke Universiteit Leuven. The second author belongs to the Centre for Methodology of Educational Research of the Katholieke Universiteit Leuven. The third author is a member of the Heymans Institute of the Rijksuniversiteit Groningen.
References
- Wilderjans, T. F., Ceulemans, E., & Van Mechelen, I. (2009). Simultaneous analysis of coupled data blocks differing in size: A comparison of two weighting schemes. Computational Statistics and Data Analysis, 53, 1086-1098. doi:10.1016/j.csda.2008.09.031
- Wilderjans, T. F., Ceulemans, E., Kiers, H. A. L., & Meers, K. (2009). The LMPCA program: A graphical user interface for fitting the linked-mode PARAFAC-PCA model to coupled real-valued data. Behavior Research Methods, 41, 1073-1082. doi:10.3758/BRM.41.4.1073
Getting LMPCA
What
To download the MATLAB version of the program, unpack the content of the zip-file LMPCA_MATLAB.zip in any folder of your choice. After unpacking, you should start MATLAB and change its current directory to the folder in which you have unpacked the files in question. Typing LMPCA_gui at the command prompt will launch the graphical user interface. To download the standalone application, follow the instructions in the file ReadMe_Standalone.txt.
Conditions
The LMPCA software is offered free of charge to anyone interested in using LMPCA analysis, provided that it is not used for financial profit and that you properly cite the software and the papers mentioned above. Requests to use the software for any commercial purpose must be directed to the authors. The LMPCA program comes without any warranty of any kind. You are not allowed to redistribute a downloaded copy of the software to others. If you want others to use the LMPCA program, refer them to this website. See here for full license information.
How
To get the MATLAB version of the software, you have to fill out your name and e-mail address in a form. After submitting that information, an e-mail containing the address where you can download the software once will be sent to you. Click here to proceed to the download area.
To get the standalone version of the software, you have to fill out your name and e-mail address in a form. After submitting that information, an e-mail containing the address where you can download the software once will be sent to you. Click here to proceed to the download area.