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 "understanding news story chains using information retrieval and network clustering techniques"):
  Abstract: Content analysis of news stories (whether manual or automatic) is a cornerstone of the communication studies field. However, much research is conducted at the level of individual news articles, despite the fact that news events (especially significant ones) are frequently presented as "stories" by news outlets: chains of connected articles covering the same event from different angles. These stories are theoretically highly important in terms of increasing public recall of news items and enhancing the agenda-setting power of the press. Yet thus far, the field has lacked an efficient method for detecting groups of articles which form stories in a way that enables their analysis. #R##N#In this work, we present a novel, automated method for identifying linked news stories from within a corpus of articles. This method makes use of techniques drawn from the field of information retrieval to identify textual closeness of pairs of articles, and then clustering techniques taken from the field of network analysis to group these articles into stories. We demonstrate the application of the method to a corpus of 61,864 articles, and show how it can efficiently identify valid story clusters within the corpus. We use the results to make observations about the prevalence and dynamics of stories within the UK news media, showing that more than 50% of news production takes place within stories.

Includes members:
  Member "how many topics stability analysis for topic models":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "improving reliability of latent dirichlet allocation by assessing its stability using clustering techniques on replicated runs")
  Member "integrating the probabilistic models bm25 bm25f into lucene":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "clara clinical report auto completion")

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.SI(Social and Information Networks)