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: "optimal scalar linear index codes for some symmetric multiple unicast problems"
  Abstract: The capacity of symmetric instance of the multiple unicast index coding problem with neighboring antidotes (side-information) with number of messages equal to the number of receivers was given by Maleki, Cadambe and Jafar. In this paper we consider ten symmetric multiple unicast problems with lesser antidotes than considered by them and explicitly construct scalar linear codes for these problems. These codes are shown to achieve the capacity or equivalently these codes shown to be of optimal length. Also, the constructed codes enable the receivers use small number of transmissions to decode their wanted messages which is important to have the probability of message error reduced in a noisy broadcast channel. Some of the cases considered are shown to be critical index coding problems and these codes help to identify some of the subclasses considered by others to be not critical index coding problems.

Connected through hyperedge HE-1 (induced by source paper "optimal scalar linear index codes for one sided neighboring side information problems"):
  with members:
    - "noisy index coding with psk and qam"
    - "on the number of optimal index codes"
    - "index coding an interference alignment perspective"
    - "optimal index codes for a class of multicast networks with receiver side information"

Connected through hyperedge HE-2 (induced by source paper "optimal vector linear index codes for some symmetric side information problems"):
  with members:
    - "noisy index coding with psk and qam"
    - "a lifting construction for scalar linear index codes"
    - "index coded psk modulation"
    - "critical graphs in index coding"
    - "index coding an interference alignment perspective"
    - "optimal index codes for a class of multicast networks with receiver side information"

Connected through hyperedge HE-3 (induced by source paper "a lifting construction for scalar linear index codes"):
  with members:
    - "index coded psk modulation"
    - "critical graphs in index coding"
    - "index coding an interference alignment perspective"
    - "optimal index codes for a class of multicast networks with receiver side information"

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.IT(Information Theory)