Improving Kernel Grower Methods using Ellipsoidal Support Vector Data Description. - Sabra Hechmi; Alya Slimene; Ezzeddine Zagrouba (ICPRAM, 2014)

Improving Sparse Subspace Clustering Using Subsampled Randomized Hadamard Transform. - Sabra Hechmi; Ezzeddine Zagrouba (ICCTA, 2015)

Enhanced Similarity Measure for Sparse Subspace Clustering Method. - Sabra Hechmi; Abir Gallas; Ezzeddine Zagrouba (IWANN (1), 2017)

Multi-kernel sparse subspace clustering on the Riemannian manifold of symmetric positive definite matrices. - Sabra Hechmi; Abir Gallas; Ezzeddine Zagrouba (Pattern Recognit. Lett., 2019)