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: "width hierarchy for k obdd of small width"
  Abstract: In this paper was explored well known model k-OBDD. There are proven width based hierarchy of classes of boolean functions which computed by k-OBDD. The proof of hierarchy is based on sufficient condition of Boolean function’s non representation as k-OBDD and complexity properties of Boolean function SAF. This function is modification of known Pointer Jumping (PJ) and Indirect Storage Access (ISA) functions.

Connected through hyperedge HE-1 (induced by source paper "new size hierarchies for two way automata"):
  with members:
    - "lower bound and hierarchies for quantum ordered read k times branching programs"
    - "on the hierarchies for deterministic nondeterministic and probabilistic ordered read k times branching programs"
    - "two way automata making choices only at the endmarkers"

Connected through hyperedge HE-2 (induced by source paper "reordering method and hierarchies for quantum and classical ordered binary decision diagrams"):
  with members:
    - "on the hierarchies for deterministic nondeterministic and probabilistic ordered read k times branching programs"

Connected through hyperedge HE-3 (induced by source paper "on the hierarchies for deterministic nondeterministic and probabilistic ordered read k times branching programs"):
  with members:
    - "very narrow quantum obdds and width hierarchies for classical obdds"

Connected through hyperedge HE-4 (induced by source paper "on oblivious branching programs with bounded repetition that cannot efficiently compute cnfs of bounded treewidth"):
  with members:
    - "two types of branching programs with bounded repetition that cannot efficiently compute monotone 3 cnfs"
    - "no small nondeterministic read once branching programs for cnfs of bounded treewidth"
    - "on the read once property of branching programs and cnfs of bounded treewidth"
    - "expander cnfs have exponential dnnf size"
    - "on obdds for cnfs of bounded treewidth"

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)