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: "a conceptual paper on servqual framework for assessing quality of internet of things iot services"
  Abstract: Service quality possesses the vital prominence in usability of innovative products and services. As Technological innovation has made the life synchronized and effective, Internet of Things (IoT) is matter of discussion everywhere. From users’ perspective, IoT services are always embraced by various system characteristics of security and performance. A service quality model can better present the preference of such technology customers. The study intends to project theoretical model of service quality for Internet of Things (IoT). Based on the existing models of service quality and the literature on internet of things, a framework is proposed to conceptualize and measure service quality for internet of things. This study establishes the IoT-SERVQUAL model with four dimensions (i.e., Privacy, Functionality, Efficiency and Tangibility) of multiple service quality models. These dimensions are essential and inclined towards the users’ leaning of IoT services. This paper contributes to research on internet of things services by the development of a comprehensive framework for customers’ quality apprehensions. This model will previse the expression of information secrecy concerns of users related with Internet of Things (IoT). This research will advance understanding of service quality in modern day technology and assist firms to devise the fruitful services structure.

Connected through hyperedge HE-1 (induced by source paper "towards a secure behavior modeling for iot networks using blockchain"):
  with members:
    - "on the activity privacy of blockchain for iot"
    - "towards secure iot communication with smart contracts in a blockchain infrastructure"
    - "platibart a platform for transactive iot blockchain applications with repeatable testing"

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.HC(Human-Computer Interaction)