Software Features# 1. Various Iterative-Algorithms Support 1.1. Implemented Solvers 1.1.1. The details of ForwardSolver and OMPSolver 1.2. Reference 2. Variants of Sparsity-Constraint Optimization 2.1. Group-structured parameters 2.2. Preselected Non-sparse Parameters 2.3. Layers 2.4. Flexible Optimization Interface 2.5. Reference 3. Features for Data Science 3.1. Data-dependence Objective Function 3.2. Optimal Support Size Searching 3.2.1. Information Criterion 3.2.2. Cross Validation 3.3. Reference 4. Computational Tips 4.1. Just In Time Compilation 4.2. Support GPU device 4.3. Support Sparse Matrices