Release Notes Version 5 5

Version 5.4 of PLS_Toolbox and Solo was released in August, 2009 as a special limited release to certain OEM customers of Eigenvector Research, Inc.

For general product information, see PLS_Toolbox Product Page. For information on Solo, see Solo Product Page.

NEW FEATURES

Model Building

• Direct Scores PLS (DSPLS) algorithm availabe in PLS (dspls).
• Automatic correction of regression model bias and slope based on test data (correctbias). NOTE: PLS_Toolbox only - not yet available in Solo
• Bias and R^2 information available for all steps of model building (calibration, cross-validation, validation)
• Improved automatic component selection in PCA models.
• Additional tests for poor choices of preprocessing with certain model types (e.g. CLS).
• User information stored with each model (as history information).

Loadings Plots

• Selectivity ratio (variable selection information) added as calculated statistic for PLS PCR and MLR models (sratio).

Scores Plots

• KNN Score Distance metric available in scores plots of PLS, PCR, and PCA (knnscoredistance).
• Improved handling of class modifications.

Preprocessing

• Kaiser Optical Systems HoloReact method importer to create preprocessing from band-area methods (hrmethodreadr).
• GLSW/EPO: add "meancenter" option to better handle orthogonalization to specific clutter matrix, plus improved help (glsw).
• Improved memory and speed performance for various preprocessing methods.
• CPSA algorithm for background correction (available only through Hamilton Sundstrand)

Importers/Exporters

• Experiment File Importer - reads file containing filenames and reference measurement data and imports the corresponding files and data into Analysis GUI. Automatically assigns the data to X and Y and to calibration and validation blocks (experimentreadr).
• Hamilton Sundstrand PIONIR PDF file importing (pdfreadr).
• Improved Horiba JY file importer performance (hjyreadr).
• Improved support for combining multiple DataSets. Selecting multiple items in Workspace Browser provides access to new "combine" menu option.
• Improved XY file importing performance (xyreadr).
• Improved XML importing/exporting support and performance (parsexml / encodexml).
• Improved support for manual parsing of CSV files (xclreadr).
• Export to Analect Spectral Files (ASF) (writeasf).
• Export to simple CSV file format for non-DataSet objects (writecsv).

General Enhancements

• TrendTool: Improved interactivity.
• Model Cache: Improved performance and support for new information in models and DataSets.
• InfoBox: New File/Save menu option.
• DataSet Object: Add ability to log user comments to history.
• DataSet Object: Add uniqueID field and support.

NEW FUNCTIONS AND FILES

correctbias - Automatically adjust regression model for bias and slope errors.

dspls - Partial Least Squares computational engine using Direct Scores algorithm.

experimentreadr - Importer for automatic importing and alignment of X and Y blocks.

hrmethodreadr - Convert a Kaiser HoloReact band integration methods into a preprocessing structure.

knnscoredistance - Calculate the average distance to the k-Nearest Neighbors in score space.

pdfreadr - Importer for Hamilton Sundstrand PIONIR PDF files.

sratio - Calculates selectivity ratio for a given regression model.