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: "faster algorithms for integer programs with block structure"
  Abstract: We consider integer programming problems $\max \{ c^T x : \mathcal{A} x = b, l \leq x \leq u, x \in \mathbb{Z}^{nt}\}$ where $\mathcal{A}$ has a (recursive) block-structure generalizing "$n$-fold integer programs" which recently received considerable attention in the literature. An $n$-fold IP is an integer program where $\mathcal{A}$ consists of $n$ repetitions of submatrices $A \in \mathbb{Z}^{r \times t}$ on the top horizontal part and $n$ repetitions of a matrix $B \in \mathbb{Z}^{s \times t}$ on the diagonal below the top part. Instead of allowing only two types of block matrices, one for the horizontal line and one for the diagonal, we generalize the $n$-fold setting to allow for arbitrary matrices in every block. We show that such an integer program can be solved in time $n^2 t^2 {\phi} \cdot (rs{\Delta})^{\mathcal{O}(rs^2+ sr^2)}$ (ignoring logarithmic factors). Here ${\Delta}$ is an upper bound on the largest absolute value of an entry of $\mathcal{A}$ and ${\phi}$ is the largest binary encoding length of a coefficient of $c$. This improves upon the previously best algorithm of Hemmecke, Onn and Romanchuk that runs in time $n^3t^3 {\phi} \cdot {\Delta}^{\mathcal{O}(t^2s)}$. In particular, our algorithm is not exponential in the number $t$ of columns of $A$ and $B$. #R##N#Our algorithm is based on a new upper bound on the $l_1$-norm of an element of the "Graver basis" of an integer matrix and on a proximity bound between the LP and IP optimal solutions tailored for IPs with block structure. These new bounds rely on the "Steinitz Lemma". #R##N#Furthermore, we extend our techniques to the recently introduced "tree-fold IPs", where we again present a more efficient algorithm in a generalized setting.

Connected through hyperedge HE-1 (induced by source paper "n fold integer programming via lp rounding"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "empowering the configuration ip new ptas results for scheduling with setups times"
    - "near linear time algorithm for n fold ilps via color coding"
    - "on integer programming and convolution"
    - "tight complexity lower bounds for integer linear programming with few constraints"
    - "scheduling meets n fold integer programming"
    - "combinatorial n fold integer programming and applications"
    - "proximity results and faster algorithms for integer programming using the steinitz lemma"

Connected through hyperedge HE-2 (induced by source paper "multitype integer monoid optimization and applications"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "empowering the configuration ip new ptas results for scheduling with setups times"
    - "near linear time algorithm for n fold ilps via color coding"
    - "on integer programming and convolution"
    - "on the graver basis of block structured integer programming"
    - "scheduling meets n fold integer programming"
    - "proximity results and faster algorithms for integer programming using the steinitz lemma"
    - "about the structure of the integer cone and its application to bin packing"

Connected through hyperedge HE-3 (induced by source paper "about the complexity of two stage stochastic ips"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "empowering the configuration ip new ptas results for scheduling with setups times"
    - "new bounds on augmenting steps of block structured integer programs"
    - "near linear time algorithm for n fold ilps via color coding"
    - "tight complexity lower bounds for integer linear programming with few constraints"
    - "on the graver basis of block structured integer programming"
    - "scheduling meets n fold integer programming"
    - "combinatorial n fold integer programming and applications"

Connected through hyperedge HE-4 (induced by source paper "positive instance driven dynamic programming for graph searching"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "practical access to dynamic programming on tree decompositions"
    - "the complexity landscape of decompositional parameters for ilp"
    - "small resolution proofs for qbf using dependency treewidth"
    - "positive instance driven dynamic programming for treewidth"
    - "a differential approach to inference in bayesian networks"
    - "courcelle s theorem a game theoretic approach"

Connected through hyperedge HE-5 (induced by source paper "a row invariant parameterized algorithm for integer programming"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "the complexity landscape of decompositional parameters for ilp"
    - "solving integer linear programs with a small number of global variables and constraints"
    - "voting and bribing in single exponential time"
    - "on the optimality of pseudo polynomial algorithms for integer programming"

Connected through hyperedge HE-6 (induced by source paper "approximation algorithms for scheduling with class constraints"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "empowering the configuration ip new ptas results for scheduling with setups times"
    - "afptas results for common variants of bin packing a new method for handling the small items"

Connected through hyperedge HE-7 (induced by source paper "new bounds on augmenting steps of block structured integer programs"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "empowering the configuration ip new ptas results for scheduling with setups times"
    - "on integer programming and convolution"
    - "scheduling meets n fold integer programming"
    - "the complexity landscape of decompositional parameters for ilp"
    - "evaluating and tuning n fold integer programming"
    - "combinatorial n fold integer programming and applications"
    - "proximity results and faster algorithms for integer programming using the steinitz lemma"

Connected through hyperedge HE-8 (induced by source paper "evaluating and tuning n fold integer programming"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "empowering the configuration ip new ptas results for scheduling with setups times"
    - "near linear time algorithm for n fold ilps via color coding"
    - "scheduling meets n fold integer programming"
    - "combinatorial n fold integer programming and applications"
    - "voting and bribing in single exponential time"

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.DM(Discrete Mathematics)