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 polynomial time kernel reductions"
  Abstract: In this paper, we examine a recently introduced type of eective reduction which applies solely to problems of equivalence or isomorphism: the \kernel reduction". Specically, we examine reductions among languages in the complexity class consisting of all languages induced by equivalence relations for which membership can be decided by a non-deterministic polynomial time Turing machine. This class is called NPEq; the denitions for PEq and coNPEq are analagous. We prove a general theorem which provides a problem which is hard under polynomial time kernel reductions for several classes of equivalence relations, including kPEq and PSPACEEq. In fact, such a problem is complete for PSPACEEq under polynomial time kernel reductions. We also show that if there is a complete problem under kernel reductions in NPEq, then that problem is also complete under many-one reductions in NP. Finally we use a proof of Ladner’s theorem to show that if PEq6 NPEq and there are problems in NPEq which are complete under polynomial time kernel reductions then there are NPEq-intermediary problems|problems which are in NPEq, but not complete under kernel reductions and not in PEq.

Connected through hyperedge HE-1 (induced by source paper "minimum circuit size graph isomorphism and related problems"):
  with members:
    - "graph isomorphism and circuit size"
    - "graph isomorphism in quasipolynomial time"
    - "complexity classes of equivalence problems revisited"

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)