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: "solarstat modeling photovoltaic sources through stochastic markov processes"
  Abstract: In this paper, we present a methodology and a tool to derive simple but yet accurate stochastic Markov processes for the description of the energy scavenged by outdoor solar sources. In particular, we target photovoltaic panels with small form factors, as those exploited by embedded communication devices such as wireless sensor nodes or, concerning modern cellular system technology, by small-cells. Our models are especially useful for the theoretical investigation and the simulation of energetically self-sufficient communication systems including these devices. The Markov models that we derive in this paper are obtained from extensive solar radiation databases, that are widely available online. Basically, from hourly radiance patterns, we derive the corresponding amount of energy (current and voltage) that is accumulated over time, and we finally use it to represent the scavenged energy in terms of its relevant statistics. Toward this end, two clustering approaches for the raw radiance data are described and the resulting Markov models are compared against the empirical distributions. Our results indicate that Markov models with just two states provide a rough characterization of the real data traces. While these could be sufficiently accurate for certain applications, slightly increasing the number of states to, e.g., eight, allows the representation of the real energy inflow process with an excellent level of accuracy in terms of first and second order statistics. Our tool has been developed using Matlab(TM) and is available under the GPL license at[1].

Connected through hyperedge HE-1 (induced by source paper "energy sustainable paradigms and methods for future mobile networks a survey"):
  with members:
    - "information exchange in randomly deployed dense wsns with wireless energy harvesting capabilities"
    - "a stochastic geometry based demand response management framework for cellular networks powered by smart grid"
    - "fog computing based radio access networks issues and challenges"
    - "a hybrid energy sharing framework for green cellular networks"
    - "recent advances in cloud radio access networks system architectures key techniques and open issues"
    - "green networking in cellular hetnets a unified radio resource management framework with base station on off switching"
    - "online ski rental for on off scheduling of energy harvesting base stations"
    - "dynamic clustering and on off strategies for wireless small cell networks"

Connected through hyperedge HE-2 (induced by source paper "optimal placement of baseband functions for energy harvesting virtual small cells"):
  with members:
    - "online ski rental for on off scheduling of energy harvesting base stations"
    - "nfv state of the art challenges and implementation in next generation mobile networks vepc"
    - "heterogeneous cloud radio access networks a new perspective for enhancing spectral and energy efficiencies"

Connected through hyperedge HE-3 (induced by source paper "joint retransmission compression and channel coding for data fidelity under energy constraints"):
  with members:
    - "reconstruction of correlated sources with energy harvesting constraints in delay constrained and delay tolerant communication scenarios"
    - "energy harvesting wireless communications a review of recent advances"
    - "data driven stochastic models and policies for energy harvesting sensor communications"
    - "secure layered transmission in multicast systems with wireless information and power transfer"
    - "a learning theoretic approach to energy harvesting communication system optimization"
    - "energy management policies for energy neutral source channel coding"

Connected through hyperedge HE-4 (induced by source paper "minimizing data distortion of periodically reporting iot devices with energy harvesting"):
  with members:
    - "energy harvesting wireless communications a review of recent advances"
    - "on lossy joint source channel coding in energy harvesting communication systems"
    - "data driven stochastic models and policies for energy harvesting sensor communications"
    - "staying alive system design for self sufficient sensor networks"
    - "quasi static multiple antenna fading channels at finite blocklength"
    - "energy management policies for energy neutral source channel coding"

Connected through hyperedge HE-5 (induced by source paper "power availability aware cell association for energy harvesting small cell base stations"):
  with members:
    - "distributed user association in energy harvesting small cell networks an exchange economy with uncertainty"
    - "distributed user association in energy harvesting small cell networks a probabilistic bandit model"
    - "distributed multi relay selection in accumulate then forward energy harvesting relay networks"
    - "user association in 5g networks a survey and an outlook"
    - "online ski rental for on off scheduling of energy harvesting base stations"
    - "a survey of energy efficient techniques for 5g networks and challenges ahead"
    - "ambient rf energy harvesting in ultra dense small cell networks performance and trade offs"
    - "millimeter wave energy harvesting"

Connected through hyperedge HE-6 (induced by source paper "optimal adaptive random multiaccess in energy harvesting wireless sensor networks"):
  with members:
    - "cross layer design of distributed sensing estimation with quality feedback part i optimal schemes"
    - "dynamic compression transmission for energy harvesting multihop networks with correlated sources"
    - "asymptotically optimal power allocation for energy harvesting communication networks"
    - "medium access control protocols for wireless sensor networks with energy harvesting"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"
    - "optimal energy management policies for energy harvesting sensor nodes"
    - "efficient energy management policies for networks with energy harvesting sensor nodes"

Connected through hyperedge HE-7 (induced by source paper "staying alive system design for self sufficient sensor networks"):
  with members:
    - "dynamic compression transmission for energy harvesting multihop networks with correlated sources"
    - "energy efficient transmission for wireless energy harvesting nodes"
    - "optimal save then transmit protocol for energy harvesting wireless transmitters"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"
    - "optimal packet scheduling in an energy harvesting communication system"
    - "optimal energy management policies for energy harvesting sensor nodes"

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.OH(Other Computer Science)