human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "analyzing 2 3 million maven dependencies to reveal an essential core in apis"):
  Abstract: This paper addresses the following question: does a small, essential, core set of API members emerges from the actual usage of the API by client applications? To investigate this question, we study the 99 most popular libraries available in Maven Central and the 865,560 client programs that declare dependencies towards them, summing up to 2.3M dependencies. Our key findings are as follows: 43.5% of the dependencies declared by the clients are not used in the bytecode; all APIs contain a large part of rarely used types and a few frequently used types, and the ratio varies according to the nature of the API, its size and its design; we can systematically extract a reuse-core from APIs that is sufficient to provide for most clients, the median size of this subset is 17% of the API that can serve 83% of the clients. This study is novel both in its scale and its findings about unused dependencies and the reuse-core of APIs. Our results provide concrete insights to improve Maven's build process with a mechanism to detect unused dependencies. They also support the need to reduce the size of APIs to facilitate API learning and maintenance.

Includes members:
  Member "the emergence of software diversity in maven central":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a comprehensive study of bloated dependencies in the maven ecosystem")
  Member "vulnerable open source dependencies counting those that matter":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "on preempting advanced persistent threats using probabilistic graphical models")
  Member "an empirical comparison of dependency network evolution in seven software packaging ecosystems":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "interactive effort aware library version harmonization")
  Member "learning api usages from bytecode a statistical approach":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "a comprehensive study of bloated dependencies in the maven ecosystem")
  Member "empirical evidence of large scale diversity in api usage of object oriented software":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "a4 automatically assisting android api migrations using code examples")

Question: Please tell me which class the source paper 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.SE(Software Engineering)