TITLE: 
                        
                            Quantile Regression Based on Laplacian Manifold Regularizer with the Data Sparsity in l1 Spaces
                                
                                
                                    AUTHORS: 
                                            Ru Feng, Shuang Chen, Lanlan Rong 
                                                    
                                                        KEYWORDS: 
                        Semi-Supervised Learning, Conditional Quantile Regression, l1-Regularizer, Manifold-Regularizer, Pinball Loss 
                                                    
                                                    
                                                        JOURNAL NAME: 
                        Open Journal of Statistics,  
                        Vol.7 No.5, 
                        October
                                                        23,
                        2017
                                                    
                                                    
                                                        ABSTRACT: In this paper, we consider the regularized learning
schemes based on l1-regularizer
and pinball loss in a data dependent hypothesis space. The target is the error
analysis for the quantile regression learning. There is no regularized
condition with the kernel function, excepting continuity and boundness.
The graph-based semi-supervised algorithm leads to an extra error term called
manifold error. Part of new error bounds and convergence rates are exactly
derived with the techniques consisting of l1-empirical
covering number and boundness decomposition.