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: "natural data storage a review on sending information from now to then via nature"
  Abstract: Digital data explosion drives a demand for robust and reliable data storage medium. Development of better digital storage device to accumulate Zetta bytes (1 ZB = $10^{21}$ bytes ) of data that will be generated in near future is a big challenge. Looking at limitations of present day digital storage devices, it will soon be a big challenge for data scientists to provide reliable. affordable and dense storage medium. As an alternative, researcher used natural medium of storage like DNA, bacteria and protein as information storage systems. This article discuss DNA based information storage system in detail along with an overview about bacterial and protein data storage systems.

Connected through hyperedge HE-1 (induced by source paper "on conflict free dna codes"):
  with members:
    - "asymptotically optimal codes correcting fixed length duplication errors in dna storage systems"
    - "properties and constructions of constrained codes for dna based data storage"
    - "the art of dna strings sixteen years of dna coding theory"
    - "a rewritable random access dna based storage system"
    - "codes for dna sequence profiles"
    - "dna codes that avoid secondary structures"

Connected through hyperedge HE-2 (induced by source paper "bacsoft a tool to archive data on bacteria"):
  with members:
    - "dna molecular storage system transferring digitally encoded information through bacterial nanonetworks"
    - "a rewritable random access dna based storage system"

Connected through hyperedge HE-3 (induced by source paper "the art of dna strings sixteen years of dna coding theory"):
  with members:
    - "on cyclic dna codes over the rings z_ 4 wz_ 4 and z_ 4 wz_ 4 vz_ 4 wvz_ 4"
    - "on cyclic dna codes over mathbb f _2 u mathbb f _2 u 2 mathbb f _2"
    - "dna based storage trends and methods"
    - "new dna cyclic codes over rings"
    - "a rewritable random access dna based storage system"
    - "on cyclic dna codes over the ring z_4 u z_4"
    - "cyclic dna codes over f2 uf2 vf2 uvf2"
    - "on cyclic dna codes"

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)