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: "impact assessment for vulnerabilities in open source software libraries"
  Abstract: Software applications integrate more and more open-source software (OSS) to benefit from code reuse. As a drawback, each vulnerability discovered in bundled OSS potentially affects the application. Upon the disclosure of every new vulnerability, the application vendor has to decide whether it is exploitable in his particular usage context, hence, whether users require an urgent application patch containing a non-vulnerable version of the OSS. Current decision making is mostly based on high-level vulnerability descriptions and expert knowledge, thus, effort intense and error prone. This paper proposes a pragmatic approach to facilitate the impact assessment, describes a proof-of-concept for Java, and examines one example vulnerability as case study. The approach is independent from specific kinds of vulnerabilities or programming languages and can deliver immediate results.

Connected through hyperedge HE-1 (induced by source paper "interactive effort aware library version harmonization"):
  with members:
    - "small world with high risks a study of security threats in the npm ecosystem"
    - "on the evolution of technical lag in the npm package dependency network"
    - "why and how java developers break apis"
    - "beyond metadata code centric and usage based analysis of known vulnerabilities in open source software"
    - "an empirical comparison of dependency network evolution in seven software packaging ecosystems"
    - "thou shalt not depend on me analysing the use of outdated javascript libraries on the web"
    - "an empirical study on the impact of refactoring activities on evolving client used apis"
    - "an investigation into the use of common libraries in android apps"

Connected through hyperedge HE-2 (induced by source paper "an empirical study of usages updates and risks of third party libraries in java projects"):
  with members:
    - "on the evolution of technical lag in the npm package dependency network"
    - "debloating software through piece wise compilation and loading"
    - "beyond metadata code centric and usage based analysis of known vulnerabilities in open source software"
    - "thou shalt not depend on me analysing the use of outdated javascript libraries on the web"
    - "an empirical study on the impact of refactoring activities on evolving client used apis"
    - "an investigation into the use of common libraries in android apps"
    - "adsplit separating smartphone advertising from applications"

Connected through hyperedge HE-3 (induced by source paper "spellbound defending against package typosquatting"):
  with members:
    - "an empirical analysis of the python package index pypi"
    - "small world with high risks a study of security threats in the npm ecosystem"
    - "a large scale investigation of obfuscation use in google play"
    - "the landscape of domain name typosquatting techniques and countermeasures"

Connected through hyperedge HE-4 (induced by source paper "a manually curated dataset of fixes to vulnerabilities of open source software"):
  with members:
    - "vulnerable open source dependencies counting those that matter"
    - "a practical approach to the automatic classification of security relevant commits"
    - "beyond metadata code centric and usage based analysis of known vulnerabilities in open source software"
    - "a survey of machine learning for big code and naturalness"

Connected through hyperedge HE-5 (induced by source paper "security issues in language based sofware ecosystems"):
  with members:
    - "a large scale investigation of obfuscation use in google play"

Connected through hyperedge HE-6 (induced by source paper "an empirical analysis of vulnerabilities in python packages for web applications"):
  with members:
    - "a look at the time delays in cvss vulnerability scoring"
    - "on the evolution of technical lag in the npm package dependency network"
    - "vulnerable open source dependencies counting those that matter"
    - "toward validation of textual information retrieval techniques for software weaknesses"
    - "attack potential in impact and complexity"

Connected through hyperedge HE-7 (induced by source paper "vulnerable open source dependencies counting those that matter"):
  with members:
    - "beyond metadata code centric and usage based analysis of known vulnerabilities in open source software"
    - "do developers update their library dependencies an empirical study on the impact of security advisories on library migration"
    - "thou shalt not depend on me analysing the use of outdated javascript libraries on the web"
    - "the un reliability of nvd vulnerable versions data an empirical experiment on google chrome vulnerabilities"

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.CR(Cryptography and Security)