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 framework for android based shopping mall applications"
  Abstract: Android is Google's latest open source software platform for mobile devices which has already attained enormous popularity. The purpose of this paper is to describe the development of mobile application for shopping mall using Android platform. A prototype was developed for the shoppers of Bashundhara Shopping Mall of Bangladesh. This prototype will serve as a framework for any such applications (apps). The paper presents a practical demonstration of how to integrate shops' information, such as names, categories, locations, descriptions, floor layout and so forth, with map module via an android application. A summary of survey results of the related literature and projects have also been included. Critical Evaluation of the prototype along with future research and development plan has been revealed. The paper will serve as a guideline for the researchers and developers to introduce and develop similar apps.

Connected through hyperedge HE-1 (induced by source paper "blockchain of things bcot the fusion of blockchain and iot technologies"):
  with members:
    - "lapps technological legal and market potentials of blockchain lightning network applications"
    - "atomic cross chain swaps development trajectory and potential of non monetary digital token swap facilities"
    - "challenges of internet of things and big data integration"
    - "a novel approach for network attack classification based on sequential questions"
    - "application of blockchain in booking and registration systems of securities exchanges"
    - "a survey of distributed certificate authorities in manets"
    - "internet of nano things things and everything future growth trends"
    - "a recruitment and human resource management technique using blockchain technology for industry 4 0"

Connected through hyperedge HE-2 (induced by source paper "internet of nano things things and everything future growth trends"):
  with members:
    - "internet of things survey on security"
    - "applications of blockchain technology beyond cryptocurrency"
    - "challenges of internet of things and big data integration"
    - "application of blockchain in booking and registration systems of securities exchanges"
    - "a recruitment and human resource management technique using blockchain technology for industry 4 0"
    - "mobile academy a ubiquitous mobile learning mlearning platform"
    - "multilingual website usability analysis based on an international user survey"
    - "user interface ui design issues for multilingual users a case study"

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)