FS-GSR: Graph-based scoring and sparse reconstruction for group streaming feature selection

High-dimensional data often presents the core challenge of features arriving dynamically in grouped streams. This paper proposes a novel feature selection algorithm named Feature Selection with Group Streaming via Graph-based Scoring and Sparse Reconstruction (FS-GSR). The method establishes a three-stage framework comprising graph-guided hybrid filtering, intra-group structure preservation, and inter-group sparse reconstruction. This framework effectively leverages both the geometric structure and discriminative information of the data, ensuring high classification performance while significantly eliminating feature redundancy. Numerical experiments on multiple real-world datasets demonstrate that FS-GSR outperforms existing state-of-the-art methods in terms of both classification accuracy and feature compression capability, exhibiting superior overall performance and robustness.