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: "compiling finite domain constraints to sat with bee"
  Abstract: We present BEE, a compiler which enables to encode finite domain constraint problems to CNF. Using BEE both eases the encoding process for the user and also performs transformations to simplify constraints and optimize their encoding to CNF. These optimizations are based primarily on equi-propagation and on partial evaluation, and also on the idea that a given constraint may have various possible CNF encodings. Often, the better encoding choice is made after constraint simplification. BEE is written in Prolog and integrates directly with a SAT solver through a suitable Prolog interface. We demonstrate that constraint simplification is often highly beneficial when solving hard finite domain constraint problems. A BEE implementation is available with this paper.

Connected through hyperedge HE-1 (induced by source paper "optimal depth sorting networks"):
  with members:
    - "sorting networks to the end and back again"
    - "solving and verifying the boolean pythagorean triples problem via cube and conquer"
    - "new bounds on optimal sorting networks"
    - "computing the ramsey number r 4 3 3 using abstraction and symmetry breaking"
    - "applying sorting networks to synthesize optimized sorting libraries"
    - "sorting networks the end game"
    - "the quest for optimal sorting networks efficient generation of two layer prefixes"
    - "twenty five comparators is optimal when sorting nine inputs and twenty nine for ten"

Connected through hyperedge HE-2 (induced by source paper "lazy model expansion interleaving grounding with search"):
  with members:
    - "predicate logic as a modelling language the idp system"
    - "the third open answer set programming competition"
    - "short and long supports for constraint propagation"
    - "asp modulo csp the clingcon system"
    - "on the implementation of the probabilistic logic programming language problog"
    - "constraint propagation for first order logic and inductive definitions"
    - "grounding fo and fo id with bounds"
    - "the dlv system for knowledge representation and reasoning"

Connected through hyperedge HE-3 (induced by source paper "redundant sudoku rules"):
  with members:
    - "d flat declarative problem solving using tree decompositions and answer set programming"
    - "there is no 16 clue sudoku solving the sudoku minimum number of clues problem"

Connected through hyperedge HE-4 (induced by source paper "boolean equi propagation for concise and efficient sat encodings of combinatorial problems"):
  with members:
    - "boolean equi propagation for optimized sat encoding"
    - "optimal base encodings for pseudo boolean constraints"
    - "circuit complexity and decompositions of global constraints"
    - "logic programming with satisfiability"
    - "the alldifferent constraint a survey"

Connected through hyperedge HE-5 (induced by source paper "compiling finite domain constraints to sat with bee the director s cut"):
  with members:
    - "boolean equi propagation for concise and efficient sat encodings of combinatorial problems"
    - "boolean equi propagation for optimized sat encoding"
    - "optimal base encodings for pseudo boolean constraints"
    - "logic programming with satisfiability"

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)