human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "sparse hierarchical interaction learning with epigraphical projection"):
  Abstract: This work focus on regression optimization problem with hierarchical interactions between variables, which is beyond the additive models in the traditional linear regression. We investigate more specifically two different fashions encountered in the literature to deal with this problem: "hierNet" and structural-sparsity regularization, and study their connections. We propose a primal-dual proximal algorithm based on epigraphical projection to optimize a general formulation of this learning problem. The experimental setting first highlights the improvement of the proposed procedure compared to state-of-the-art methods based on fast iterative shrinkage-thresholding algorithm (i.e. FISTA) or alternating direction method of multipliers (i.e. ADMM) and second we provide fair comparisons between the different hierarchical penalizations. The experiments are conducted both on the synthetic and real data, and they clearly show that the proposed primal-dual proximal algorithm based on epigraphical projection is efficient and effective to solve and investigate the question of the hierarchical interaction learning problem.

Includes members:
  Member "nonconvex regularizations for feature selection in ranking with sparse svm":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "feature selection using stochastic gates")
  Member "playing with duality an overview of recent primal dual approaches for solving large scale optimization problems":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "deep transform and metric learning network wedding deep dictionary learning and neural networks")
  Member "invariant scattering convolution networks":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "spatially adaptive filter units for compact and efficient deep neural networks")
  Member "structured sparsity through convex optimization":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "joint group feature selection and discriminative filter learning for robust visual object tracking")
  Member "convergence rates of inexact proximal gradient methods for convex optimization":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "credit assignment techniques in stochastic computation graphs")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.LG(Machine Learning)