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: "two way finite automata with quantum and classical states"
  Abstract: We introduce 2-way finite automata with quantum and classical states (2qcfa's). This is a variant on the 2-way quantum finite automata (2qfa) model which may be simpler to implement than unrestricted 2qfa's; the internal state of a 2qcfa may include a quantum part that may be in a (mixed) quantum state, but the tape head position is required to be classical. #R##N#We show two languages for which 2qcfa's are better than classical 2-way automata. First, 2qcfa's can recognize palindromes, a language that cannot be recognized by 2-way deterministic or probabilistic finite automata. Second, in polynomial time 2qcfa's can recognize {a^n b^n | n>=0}, a language that can be recognized classically by a 2-way probabilistic automaton but only in exponential time.

Connected through hyperedge HE-1 (induced by source paper "classically time controlled quantum automata definition and properties"):
  with members:
    - "power of the interactive proof systems with verifiers modeled by semi quantum two way finite automata"
    - "quantum finite automata a modern introduction"
    - "quipper a scalable quantum programming language"
    - "a lambda calculus for quantum computation with classical control"
    - "theory of one tape linear time turing machines"

Connected through hyperedge HE-2 (induced by source paper "quantum finite automata survey status and research directions"):
  with members:
    - "unary probabilistic and quantum automata on promise problems"
    - "power of the interactive proof systems with verifiers modeled by semi quantum two way finite automata"
    - "promise problems solved by quantum and classical finite automata"
    - "magic coins are useful for small space quantum machines"
    - "debates with small transparent quantum verifiers"
    - "from quantum query complexity to state complexity"
    - "classical and quantum realtime alternating automata"
    - "quantum finite automata a modern introduction"

Connected through hyperedge HE-3 (induced by source paper "computational limitations of affine automata"):
  with members:
    - "language recognition power and succinctness of affine automata"
    - "can one quantum bit separate any pair of words with zero error"
    - "on the computational power of affine automata"
    - "affine computation and affine automaton"
    - "automata and quantum computing"
    - "languages recognized by nondeterministic quantum finite automata"

Connected through hyperedge HE-4 (induced by source paper "classically time controlled quantum automata"):
  with members:
    - "magic coins are useful for small space quantum machines"
    - "quipper a scalable quantum programming language"
    - "a lambda calculus for quantum computation with classical control"
    - "theory of one tape linear time turing machines"

Connected through hyperedge HE-5 (induced by source paper "uncountable classical and quantum complexity classes"):
  with members:
    - "probabilistic verification of all languages"
    - "postselecting probabilistic finite state recognizers and verifiers"
    - "uncountable realtime probabilistic classes"
    - "automata and quantum computing"
    - "magic coins are useful for small space quantum machines"
    - "quantum stochastic and pseudo stochastic languages with few states"
    - "quantum finite automata a modern introduction"
    - "new results on the minimum amount of useful space"

Connected through hyperedge HE-6 (induced by source paper "2 tape 1 way quantum finite state automata"):
  with members:
    - "hierarchy and equivalence of multi letter quantum finite automata"

Connected through hyperedge HE-7 (induced by source paper "automata and quantum computing"):
  with members:
    - "potential of quantum finite automata with exact acceptance"
    - "magic coins are useful for small space quantum machines"
    - "classical automata on promise problems"
    - "finite automata with advice tapes"
    - "superiority of exact quantum automata for promise problems"
    - "probabilistic and quantum finite automata with postselection"
    - "computation with narrow ctcs"
    - "classical and quantum computation with small space bounds phd thesis"

Connected through hyperedge HE-8 (induced by source paper "unary probabilistic and quantum automata on promise problems"):
  with members:
    - "new results on classical and quantum counter automata"
    - "potential of quantum finite automata with exact acceptance"
    - "promise problems solved by quantum and classical finite automata"
    - "very narrow quantum obdds and width hierarchies for classical obdds"
    - "classical automata on promise problems"
    - "quantum finite automata a modern introduction"
    - "on the state complexity of semi quantum finite automata"
    - "superiority of exact quantum automata for promise problems"

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)