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: "search and fetch with 2 robots on a disk wireless and face to face communication models"
  Abstract: We initiate the study of a new problem on searching and fetching in a distributed environment concerning treasure-evacuation from a unit disk. A treasure and an exit are located at unknown positions on the perimeter of a disk and at known arc distance. A team of two robots start from the center of the disk, and their goal is to fetch the treasure to the exit. At any time the robots can move anywhere they choose on the disk, independently of each other, with the same speed. A robot detects an interesting point (treasure or exit) only if it passes over the exact location of that point. We are interested in designing distributed algorithms that minimize the worst-case treasure-evacuation time, i.e. the time it takes for the treasure to be discovered and brought (fetched) to the exit by any of the robots. #R##N#The communication protocol between the robots is either wireless, where information is shared at any time, or face-to-face (i.e. non-wireless), where information can be shared only if the robots meet. For both models we obtain upper bounds for fetching the treasure to the exit. Our main technical contribution pertains to the face-to-face model. More specifically, we demonstrate how robots can exchange information without meeting, effectively achieving a highly efficient treasure-evacuation protocol which is minimally affected by the lack of distant communication. Finally, we complement our positive results above by providing a lower bound in the face-to-face model.

Connected through hyperedge HE-1 (induced by source paper "probabilistically faulty searching on a half line"):
  with members:
    - "energy consumption of group search on a line"
    - "average case worst case tradeoffs for evacuating 2 robots from the disk in the face to face model"
    - "linear search with terrain dependent speeds"
    - "fast two robot disk evacuation with wireless communication"
    - "further connections between contract scheduling and ray searching problems"
    - "collaborative search on the plane without communication"
    - "online searching with turn cost"

Connected through hyperedge HE-2 (induced by source paper "energy consumption of group search on a line"):
  with members:
    - "average case worst case tradeoffs for evacuating 2 robots from the disk in the face to face model"
    - "god save the queen"
    - "priority evacuation from a disk using mobile robots"
    - "linear search with terrain dependent speeds"
    - "search on a line by byzantine robots"
    - "fast two robot disk evacuation with wireless communication"
    - "evacuating robots from a disk using face to face communication"
    - "online searching with turn cost"

Connected through hyperedge HE-3 (induced by source paper "time energy tradeoffs for evacuation by two robots in the wireless model"):
  with members:
    - "average case worst case tradeoffs for evacuating 2 robots from the disk in the face to face model"
    - "god save the queen"
    - "priority evacuation from a disk using mobile robots"
    - "linear search with terrain dependent speeds"
    - "search on a line by byzantine robots"
    - "evacuating robots from a disk using face to face communication"
    - "online searching with turn cost"

Connected through hyperedge HE-4 (induced by source paper "average case worst case tradeoffs for evacuating 2 robots from the disk in the face to face model"):
  with members:
    - "god save the queen"
    - "priority evacuation from a disk using mobile robots"
    - "search on a line by byzantine robots"
    - "searching with advice robot fence jumping"
    - "evacuation of rectilinear polygons"

Connected through hyperedge HE-5 (induced by source paper "priority evacuation from a disk using mobile robots"):
  with members:
    - "god save the queen"
    - "fast two robot disk evacuation with wireless communication"
    - "revisiting the problem of searching on a line"
    - "fast rendezvous on a cycle by agents with different speeds"
    - "online searching with turn cost"

Connected through hyperedge HE-6 (induced by source paper "evacuating robots from a disk using face to face communication"):
  with members:
    - "fast two robot disk evacuation with wireless communication"
    - "trade offs between selection complexity and performance when searching the plane without communication"

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.DS(Data Structures and Algorithms)