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PLS regression is a regression technique usually designed to predict the values taken by a group of Y variables (target variables, dependent variables) from a set of variables X (descriptors, independent variables). Initially defined for the prediction of continuous target variable, the PLS regression can be adapted to the prediction of one discrete variable - i.e. adapted to the supervised learning framework - in different ways . The approah is called "PLS Discriminant Analysis" in this context. It incorporates the valuable qualities that we know usually into this new framework: the ability to process a representation space with very high dimensionality, a large number of noisy and / or redundant descriptors. This tutorial is the continuation of a precedent paper dedicated to the presentation of some variants of the PLS-DA . We describe the behavior of one of them (PLS-LDA - PLS Linear Discriminant Analysis) on a learning set where the number of descriptors is moderately hig

Tanagra add-on for OpenOffice 3.3 and LibreOffice 3.4 . The connection with spreadsheet applications is certainly a factor of success for Tanagra. It is easy to manipulate a dataset into OpenOffice Calc (up to version 3.2) and send it to Tanagra using the TanagraLibrary.zip extension for further analysis . Recently, users have reported to me that the mechanism did not work with recent versions of OpenOffice (version 3.3) and LibreOffice (version 3.4). I realized that, rather than a correction, it was more appropriate to elaborate a new module which meets the standard for managing extensions of these tools. The new library " TanagraModule.oxt " is now incorporated into the distribution. This tutorial describes how to install and to use this add-on under OpenOffice Calc 3.0. The adaptation to LibreOffice 3.4 is very easy. Keywords : data importation, spreadsheet application, openoffice, libreoffice, add-in, add-on, excel Component : View Dataset Tutorial : en_Tanagra_Addon

Few improvements for this new version. A new addon for the connection between Tanagra and the recent version of OpenOffice Calc spreadsheet has been created. The old one did not work for recent versions - OpenOffice 3.3 and LibreOffice 3.4 . During the installation process, another library was added (" TanagraModule.oxt ") to not interfere with the old, still functional for previous versions of Open Office (3.2 and earlier). A tutorial describing its installation and its utilization will be put online soon. I take this opportunity to highlight again how a privileged connection between a spreadsheet and a specialized tool for Data Mining is convenient. The annual poll organized by the kdnuggets.com website shows the interest of this connection ( 2011 , 2010 , 2009 ,...). We note that there is a similar addon for the R software ( R4Calc ). This change was suggested by Jérémy Roos ( OpenOffice ) and Franck Thomas ( LibreOffice ). The non-standardized ACP is now available. It