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: "learning for multi robot cooperation in partially observable stochastic environments with macro actions"
  Abstract: This paper presents a data-driven approach for multi-robot coordination in partially-observable domains based on Decentralized Partially Observable Markov Decision Processes (Dec-POMDPs) and macro-actions (MAs). Dec-POMDPs provide a general framework for cooperative sequential decision making under uncertainty and MAs allow temporally extended and asynchronous action execution. To date, most methods assume the underlying Dec-POMDP model is known a priori or a full simulator is available during planning time. Previous methods which aim to address these issues suffer from local optimality and sensitivity to initial conditions. Additionally, few hardware demonstrations involving a large team of heterogeneous robots and with long planning horizons exist. This work addresses these gaps by proposing an iterative sampling based Expectation-Maximization algorithm (iSEM) to learn polices using only trajectory data containing observations, MAs, and rewards. Our experiments show the algorithm is able to achieve better solution quality than the state-of-the-art learning-based methods. We implement two variants of multi-robot Search and Rescue (SAR) domains (with and without obstacles) on hardware to demonstrate the learned policies can effectively control a team of distributed robots to cooperate in a partially observable stochastic environment.

Connected through hyperedge HE-1 (induced by source paper "context aware deep q network for decentralized cooperative reconnaissance by a robotic swarm"):
  with members:
    - "policy gradient with value function approximation for collective multiagent planning"
    - "review of multi agent algorithms for collective behavior a structural taxonomy"
    - "fully decentralized policies for multi agent systems an information theoretic approach"

Connected through hyperedge HE-2 (induced by source paper "multi agent common knowledge reinforcement learning"):
  with members:
    - "the starcraft multi agent challenge"
    - "reasoning about hypothetical agent behaviours and their parameters"
    - "qmix monotonic value function factorisation for deep multi agent reinforcement learning"
    - "learning to communicate implicitly by actions"
    - "cooperative and distributed reinforcement learning of drones for field coverage"
    - "multi vehicle flocking control with deep deterministic policy gradient method"
    - "training deep networks with synthetic data bridging the reality gap by domain randomization"
    - "agreeing to cross how drivers and pedestrians communicate"

Connected through hyperedge HE-3 (induced by source paper "decentralized cooperative planning for automated vehicles with hierarchical monte carlo tree search"):
  with members:
    - "combining neural networks and tree search for task and motion planning in challenging environments"
    - "decentralized control of partially observable markov decision processes using belief space macro actions"
    - "hierarchical reinforcement learning with the maxq value function decomposition"

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.MA(Multiagent Systems)