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: "improved bounds for 3sum k sum and linear degeneracy"
  Abstract: Given a set of $n$ real numbers, the 3SUM problem is to decide whether there are three of them that sum to zero. Until a recent breakthrough by Gr{\o}nlund and Pettie [FOCS'14], a simple $\Theta(n^2)$-time deterministic algorithm for this problem was conjectured to be optimal. Over the years many algorithmic problems have been shown to be reducible from the 3SUM problem or its variants, including the more generalized forms of the problem, such as k-SUM and k-variate linear degeneracy testing. The conjectured hardness of these problems have become extremely popular for basing conditional lower bounds for numerous algorithmic problems in P. Thus, a better understanding of the complexity of the 3SUM problem and its variants, might shed more light on the complexity of a wide class of problems in P. #R##N#In this paper we show the following: #R##N#1. A deterministic algorithm for 3SUM that runs in $O(n^2 \log\log n / \log n)$ time. #R##N#2. The randomized decision tree complexity of 3SUM is $O(n^{3/2})$. #R##N#3. The randomized decision tree complexity of $k$-variate linear degeneracy testing (k-LDT) is $O(n^{k/2})$, for any odd $k\ge 3$. #R##N#These bounds improve the ones obtained by Gr{\o}nlund and Pettie, giving a faster deterministic algorithm and new randomized decision tree bounds for this archetypal algorithmic problems.

Connected through hyperedge HE-1 (induced by source paper "all non trivial variants of 3 ldt are equivalent"):
  with members:
    - "the strong 3sum indexing conjecture is false"
    - "3sum with preprocessing algorithms lower bounds and cryptographic applications"
    - "near optimal linear decision trees for k sum and related problems"
    - "how hard is it to find honest witnesses"
    - "clustered integer 3sum via additive combinatorics"
    - "threesomes degenerates and love triangles"
    - "on hardness of jumbled indexing"
    - "higher lower bounds from the 3sum conjecture"

Connected through hyperedge HE-2 (induced by source paper "tighter connections between formula sat and shaving logs"):
  with members:
    - "subquadratic algorithms for succinct stable matching"
    - "a dichotomy for regular expression membership testing"
    - "an improved combinatorial algorithm for boolean matrix multiplication"
    - "fr echet distance for curves revisited"
    - "subtree isomorphism revisited"
    - "which regular expression patterns are hard to match"
    - "simulating branching programs with edit distance and friends or a polylog shaved is a lower bound made"
    - "quadratic conditional lower bounds for string problems and dynamic time warping"

Connected through hyperedge HE-3 (induced by source paper "subquadratic approximation scheme for partition"):
  with members:
    - "on problems equivalent to min convolution"
    - "seth based lower bounds for subset sum and bicriteria path"
    - "a near linear pseudopolynomial time algorithm for subset sum"
    - "clustered integer 3sum via additive combinatorics"
    - "threesomes degenerates and love triangles"
    - "edit distance cannot be computed in strongly subquadratic time unless seth is false"
    - "polylogarithmic approximation for edit distance and the asymmetric query complexity"

Connected through hyperedge HE-4 (induced by source paper "seth based lower bounds for subset sum and bicriteria path"):
  with members:
    - "on the fine grained complexity of empirical risk minimization kernel methods and neural networks"
    - "a short note on merlin arthur protocols for subset sum"
    - "parameterizing pwm and profile matching and knapsack by the feasible weight solutions count"
    - "subquadratic algorithms for algebraic generalizations of 3sum"
    - "a near linear pseudopolynomial time algorithm for subset sum"
    - "a dichotomy for regular expression membership testing"
    - "clustered integer 3sum via additive combinatorics"
    - "which regular expression patterns are hard to match"

Connected through hyperedge HE-5 (induced by source paper "near optimal linear decision trees for k sum and related problems"):
  with members:
    - "generalized comparison trees for point location problems"
    - "active classification with comparison queries"
    - "the decision tree complexity for k sum is at most nearly quadratic"
    - "clustered integer 3sum via additive combinatorics"
    - "solving k sum using few linear queries"
    - "threesomes degenerates and love triangles"
    - "higher lower bounds from the 3sum conjecture"
    - "faster all pairs shortest paths via circuit complexity"

Connected through hyperedge HE-6 (induced by source paper "connectivity oracles for graphs subject to vertex failures"):
  with members:
    - "dynamic minimum spanning forest with subpolynomial worst case update time"
    - "improved algorithms for maintaining dfs tree in undirected graphs"
    - "fully dynamic connectivity in o log n log log n 2 amortized expected time"
    - "faster randomized worst case update time for dynamic subgraph connectivity"
    - "dynamic dfs in undirected graphs breaking the o m barrier"
    - "incremental and fully dynamic subgraph connectivity for emergency planning"
    - "faster online matrix vector multiplication"
    - "unifying and strengthening hardness for dynamic problems via the online matrix vector multiplication conjecture"

Connected through hyperedge HE-7 (induced by source paper "dynamic time warping and geometric edit distance breaking the quadratic barrier"):
  with members:
    - "tighter connections between formula sat and shaving logs"
    - "simulating branching programs with edit distance and friends or a polylog shaved is a lower bound made"
    - "quadratic conditional lower bounds for string problems and dynamic time warping"
    - "approximating dynamic time warping and edit distance for a pair of point sequences"
    - "quadratic time hardness of lcs and other sequence similarity measures"
    - "why walking the dog takes time frechet distance has no strongly subquadratic algorithms unless seth fails"
    - "threesomes degenerates and love triangles"
    - "edit distance cannot be computed in strongly subquadratic time unless seth is false"

Connected through hyperedge HE-8 (induced by source paper "dominance products and faster algorithms for high dimensional closest pair under l_ infty"):
  with members:
    - "threesomes degenerates and love triangles"
    - "powers of tensors and fast matrix multiplication"
    - "faster algorithms for rectangular matrix multiplication"
    - "all pairs shortest paths using bridging sets and rectangular matrix multiplication"

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.DS(Data Structures and Algorithms)