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: "depqbf 6 0 a search based qbf solver beyond traditional qcdcl"
  Abstract: We present the latest version 6.0 of the quantified Boolean formula (QBF) solver DepQBF, which is based on QCDCL. QCDCL is an extension of the conflict-driven clause learning (CDCL) paradigm implemented in state of the art propositional satisfiability (SAT) solvers. The Q-resolution calculus (QRES) is a QBF proof system which underlies QCDCL. QCDCL solvers can produce QRES proofs of QBFs in prenex conjunctive normal form (PCNF) as a byproduct of the solving process. In contrast to traditional QCDCL based on QRES, DepQBF 6.0 implements a variant of QCDCL which is based on a generalization of QRES. This generalization is due to a set of additional axioms and leaves the original Q-resolution rules unchanged. The generalization of QRES enables QCDCL to potentially produce exponentially shorter proofs than traditional QCDCL. We present an overview of the features implemented in DepQBF and report on experimental results which demonstrate the effectiveness of generalized QRES in QCDCL.

Connected through hyperedge HE-1 (induced by source paper "qratpre effective qbf preprocessing via strong redundancy properties"):
  with members:
    - "expansion based qbf solving without recursion"
    - "evaluating qbf solvers quantifier alternations matter"
    - "on expansion and resolution in cegar based qbf solving"
    - "textsf qrat generalizing qrat by a more powerful qbf redundancy property"
    - "the qbf gallery"
    - "clause term resolution and learning in the evaluation of quantified boolean formulas"

Connected through hyperedge HE-2 (induced by source paper "solving advanced argumentation problems with answer set programming"):
  with members:
    - "the power of non ground rules in answer set programming"
    - "stable unstable semantics beyond np with normal logic programs"
    - "lpopt a rule optimization tool for answer set programming"
    - "extension based semantics of abstract dialectical frameworks"
    - "the dlv system for knowledge representation and reasoning"

Connected through hyperedge HE-3 (induced by source paper "design space exploration as quantified satisfaction"):
  with members:
    - "twenty five comparators is optimal when sorting nine inputs and twenty nine for ten"
    - "practical graph isomorphism ii"
    - "anytime heuristic search"

Connected through hyperedge HE-4 (induced by source paper "expansion based qbf solving without recursion"):
  with members:
    - "evaluating qbf solvers quantifier alternations matter"
    - "on expansion and resolution in cegar based qbf solving"
    - "encodings of bounded synthesis"
    - "structural synthesis for gxw specifications"
    - "detecting unrealizability of distributed fault tolerant systems"
    - "conformant planning as a case study of incremental qbf solving"

Connected through hyperedge HE-5 (induced by source paper "evaluating qbf solvers quantifier alternations matter"):
  with members:
    - "on expansion and resolution in cegar based qbf solving"
    - "size cost and capacity a semantic technique for hard random qbfs"
    - "the qbf gallery"
    - "proof complexity modulo the polynomial hierarchy understanding alternation as a source of hardness"
    - "meditations on quantified constraint satisfaction"
    - "clause term resolution and learning in the evaluation of quantified boolean formulas"

Connected through hyperedge HE-6 (induced by source paper "symmetries of quantified boolean formulas"):
  with members:
    - "qfun towards machine learning in qbf"
    - "breaking symmetry with different orderings"

Connected through hyperedge HE-7 (induced by source paper "textsf qrat generalizing qrat by a more powerful qbf redundancy property"):
  with members:
    - "encodings of bounded synthesis"

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.LO(Logic in Computer Science)