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: "ml4pg in computer algebra verification"
  Abstract: ML4PG is a machine-learning extension that provides statistical proof hints during the process of Coq/SSReflect proof development. In this paper, we use ML4PG to find proof patterns in the CoqEAL library -- a library that was devised to verify the correctness of Computer Algebra algorithms. In particular, we use ML4PG to help us in the formalisation of an efficient algorithm to compute the inverse of triangular matrices.

Connected through hyperedge HE-1 (induced by source paper "mining state based models from proof corpora"):
  with members:
    - "mizar 40 for mizar 40"
    - "premise selection for mathematics by corpus analysis and kernel methods"
    - "a graphical language for proof strategies"
    - "proof pattern recognition and lemma discovery in acl2"
    - "machine learning in proof general interfacing interfaces"
    - "learning assisted automated reasoning with flyspeck"

Connected through hyperedge HE-2 (induced by source paper "proof pattern search in coq ssreflect"):
  with members:
    - "recycling proof patterns in coq case studies"
    - "lemma mining over hol light"
    - "proof pattern recognition and lemma discovery in acl2"

Connected through hyperedge HE-3 (induced by source paper "recycling proof patterns in coq case studies"):
  with members:
    - "statistical proof pattern recognition automated or interactive"
    - "a qualitative comparison of the suitability of four theorem provers for basic auction theory"
    - "proof pattern recognition and lemma discovery in acl2"
    - "decidable classes of tree automata mixing local and global constraints modulo flat theories"
    - "machine learning in proof general interfacing interfaces"
    - "computing persistent homology within coq ssreflect"
    - "learning assisted automated reasoning with flyspeck"
    - "type classes for efficient exact real arithmetic in coq"

Connected through hyperedge HE-4 (induced by source paper "machine learning in proof general interfacing interfaces"):
  with members:
    - "encoding monomorphic and polymorphic types"

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)