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: "challenges and complexities in application of lca approaches in the case of ict for a sustainable future"
  Abstract: In this work, three of many ICT-specific challenges of LCA are discussed. First, the inconsistency versus uncertainty is reviewed with regard to the meta-technological nature of ICT. As an example, the semiconductor technologies are used to highlight the complexities especially with respect to energy and water consumption. The need for specific representations and metric to separately assess products and technologies is discussed. It is highlighted that applying product-oriented approaches would result in abandoning or disfavoring of new technologies that could otherwise help toward a better world. Second, several believed-untouchable hot spots are highlighted to emphasize on their importance and footprint. The list includes, but not limited to, i) User Computer-Interfaces (UCIs), especially screens and displays, ii) Network-Computer Interlaces (NCIs), such as electronic and optical ports, and iii) electricity power interfaces. In addition, considering cross-regional social and economic impacts, and also taking into account the marketing nature of the need for many ICT's product and services in both forms of hardware and software, the complexity of End of Life (EoL) stage of ICT products, technologies, and services is explored. Finally, the impact of smart management and intelligence, and in general software, in ICT solutions and products is highlighted. In particular, it is observed that, even using the same technology, the significance of software could be highly variable depending on the level of intelligence and awareness deployed. With examples from an interconnected network of data centers managed using Dynamic Voltage and Frequency Scaling (DVFS) technology and smart cooling systems, it is shown that the unadjusted assessments could be highly uncertain, and even inconsistent, in calculating the management component's significance on the ICT impacts.

Connected through hyperedge HE-1 (induced by source paper "fairga fair genetic algorithm beyond resource oriented sustainability for ict products and services"):
  with members:
    - "40 gbps access for metro networks implications in terms of sustainability and innovation from an lca perspective"
    - "a graph based perspective to total carbon footprint assessment of non marginal technology driven projects use case of ott iptv"

Connected through hyperedge HE-2 (induced by source paper "transparent clouds an enhancement to abstraction"):
  with members:
    - "the service bond paradigm potentials for a sustainable ict enabled future"

Connected through hyperedge HE-3 (induced by source paper "40 gbps access for metro networks implications in terms of sustainability and innovation from an lca perspective"):
  with members:
    - "quality of experience qoe beyond quality of service qos as its baseline qoe at the interface of experience domains"
    - "a graph based perspective to total carbon footprint assessment of non marginal technology driven projects use case of ott iptv"

Connected through hyperedge HE-4 (induced by source paper "quality of experience qoe beyond quality of service qos as its baseline qoe at the interface of experience domains"):
  with members:
    - "a graph based perspective to total carbon footprint assessment of non marginal technology driven projects use case of ott iptv"

Connected through hyperedge HE-5 (induced by source paper "a graph based perspective to total carbon footprint assessment of non marginal technology driven projects use case of ott iptv"):
  with members:
    - "quality of experience qoe beyond quality of service qos as its baseline qoe at the interface of experience domains"

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.CY(Computers and Society)