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: "research evaluation per discipline a peer review method and its outcomes"
  Abstract: This paper describes the method for ex-post peer-review evaluation per research discipline used at the Vrije Universiteit Brussel, and the outcomes obtained. Pertinent advice and responses at different levels benefit research quality, competitivity and visibility. Imposed reflection and contacts modify the researcher's attitude and improve team strategies. Deeper insights and data sets on research disciplines and extracted general recommendations support the university management's policy decisions, instruments and guidelines. Comparisons with other assessments lead to a better understanding of possibilities and limitations of different evaluation processes. The described peer-review method can be applied systematically, yielding a complete overview, or on an ad hoc basis for a particular discipline, based on demands from research teams or on strategic or policy arguments. Copyright , Beech Tree Publishing.

Connected through hyperedge HE-1 (induced by source paper "characteristics of international versus non international scientific publication media in team and author based data"):
  with members:
    - "quantitative cv based indicators for research quality validated by peer review"
    - "reliability and comparability of peer review results"

Connected through hyperedge HE-2 (induced by source paper "quality related publication categories in social sciences and humanities based on a university s peer review assessments"):
  with members:
    - "quantitative cv based indicators for research quality validated by peer review"

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.DL(Digital Libraries)