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The Square

Browse the latest algorithms, datasets, and tools contributed by the global chemometrics community. Find resources, share your work, and stay updated.

Filter by

Codes Datasets

Feature Selection Data exploration MATLAB

SPCA

Sparse PCA with L1-penalized loadings for variable selection

Morten Arendt Rasmussen [1], Rasmus Bro [1]MIT | 1.0 | 2026-02-19

Data exploration Feature Selection Missing data MATLAB

NIPALS

NIPALS performs PCA on data using iterative least squares and deflation steps. It can deal with missing values.

Adrián Gómez-SánchezMIT | 1.0 | 2025-11-16

Feature Selection Data exploration Missing data MATLAB

PCA for missing data (O-ALS)

OALS calculates the scores and loadings from data with missing values.

Adrián Gómez-Sánchez [1,2], Raffaele Vitale[2] et al.MIT | 2.0 | 2025-03-26

Feature Selection Data exploration Missing data MATLAB

PCA for missing data (Iterative SVD)

Iterative SVD performs iterative PCA-based imputation to handle missing data.

Adrián Gómez-SánchezMIT | 1.0 | 2025-03-26

Thank you for helping us build a stronger, more collaborative chemometric community!

If you’re interested in becoming a contributor, please contact our team for more information or visit our Contributor’s Guide to learn more about the submission process.

Get Started

Feature Selection Data exploration MATLAB

SPCA

Sparse PCA with L1-penalized loadings for variable selection

Morten Arendt Rasmussen [1], Rasmus Bro [1]MIT | 1.0 | 2026-02-19

Data exploration Feature Selection Missing data MATLAB

NIPALS

NIPALS performs PCA on data using iterative least squares and deflation steps. It can deal with missing values.

Adrián Gómez-SánchezMIT | 1.0 | 2025-11-16

Feature Selection Data exploration Missing data MATLAB

PCA for missing data (O-ALS)

OALS calculates the scores and loadings from data with missing values.

Adrián Gómez-Sánchez [1,2], Raffaele Vitale[2] et al.MIT | 2.0 | 2025-03-26

Feature Selection Data exploration Missing data MATLAB

PCA for missing data (Iterative SVD)

Iterative SVD performs iterative PCA-based imputation to handle missing data.

Adrián Gómez-SánchezMIT | 1.0 | 2025-03-26