human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "on the parameterized complexity of k sum"
  Abstract: In the k-SUM problem, we are given a set of numbers and asked if there are k of them which sum to 0. The case of k = 3 has been extensively studied in computational geometry, and known to be intimately related to many low-dimensional problems. The case of arbitrary k is the natural parameterization of Subset Sum and is well-known in parameterized algorithms and complexity. We present new FPT reductions between the k-SUM problem and the k-Clique problem, yielding several complexity-theoretic and algorithmic consequences. Our reductions show that k-SUM on “small” numbers (in the range [−n f(k) ,n f(k) ] for any computable function f) is W[1]complete, and that k-SUM (in general) is W[1]-complete under a common derandomization assumption. These results effectively resolve the parameterized complexity of k-SUM, initially posed in 1992 by Downey and Fellows in their seminal paper on parameterized intractability [11, 12]. Our method is quite general and applies to other weighted problems as well.

Question: Please tell me which class the center node 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.CC(Computational Complexity)