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: "algorithms with logarithmic or sublinear regret for constrained contextual bandits"
  Abstract: We study contextual bandits with budget and time constraints, referred to as constrained contextual bandits.The time and budget constraints significantly complicate the exploration and exploitation tradeoff because they introduce complex coupling among contexts over time.Such coupling effects make it difficult to obtain oracle solutions that assume known statistics of bandits. To gain insight, we first study unit-cost systems with known context distribution. When the expected rewards are known, we develop an approximation of the oracle, referred to Adaptive-Linear-Programming (ALP), which achieves near-optimality and only requires the ordering of expected rewards. With these highly desirable features, we then combine ALP with the upper-confidence-bound (UCB) method in the general case where the expected rewards are unknown {\it a priori}. We show that the proposed UCB-ALP algorithm achieves logarithmic regret except for certain boundary cases. Further, we design algorithms and obtain similar regret analysis results for more general systems with unknown context distribution and heterogeneous costs. To the best of our knowledge, this is the first work that shows how to achieve logarithmic regret in constrained contextual bandits. Moreover, this work also sheds light on the study of computationally efficient algorithms for general constrained contextual bandits.

Connected through hyperedge HE-1 (induced by source paper "achieving fairness in the stochastic multi armed bandit problem"):
  with members:
    - "advancing subgroup fairness via sleeping experts"
    - "fair logistic regression an adversarial perspective"
    - "fairness in recommendation ranking through pairwise comparisons"
    - "combinatorial sleeping bandits with fairness constraints"
    - "policy learning for fairness in ranking"
    - "equal opportunity in online classification with partial feedback"
    - "introduction to multi armed bandits"
    - "online learning with an unknown fairness metric"

Connected through hyperedge HE-2 (induced by source paper "group fairness in bandit arm selection"):
  with members:
    - "achieving fairness in the stochastic multi armed bandit problem"
    - "reinforcement learning with fairness constraints for resource distribution in human robot teams"
    - "making the cut a bandit based approach to tiered interviewing"
    - "multi stakeholder recommendation and its connection to multi sided fairness"
    - "incorporating behavioral constraints in online ai systems"
    - "the measure and mismeasure of fairness a critical review of fair machine learning"
    - "the frontiers of fairness in machine learning"
    - "fairness of exposure in rankings"

Connected through hyperedge HE-3 (induced by source paper "the bayesian prophet a low regret framework for online decision making"):
  with members:
    - "near optimal online algorithms and fast approximation algorithms for resource allocation problems"
    - "online stochastic matching new algorithms and bounds"
    - "prophet inequalities made easy stochastic optimization by pricing non stochastic inputs"
    - "new algorithms better bounds and a novel model for online stochastic matching"
    - "online convex optimization using predictions"
    - "fast algorithms for online stochastic convex programming"
    - "bandits with knapsacks"
    - "primal beats dual on online packing lps in the random order model"

Connected through hyperedge HE-4 (induced by source paper "linear stochastic bandits under safety constraints"):
  with members:
    - "stagewise safe bayesian optimization with gaussian processes"
    - "provably optimal algorithms for generalized linear contextual bandits"
    - "constrained policy optimization"
    - "bayesian optimization with safety constraints safe and automatic parameter tuning in robotics"
    - "linear contextual bandits with knapsacks"
    - "resourceful contextual bandits"
    - "bandits with knapsacks"
    - "learning to optimize via posterior sampling"

Connected through hyperedge HE-5 (induced by source paper "online linear programming dual convergence new algorithms and regret bounds"):
  with members:
    - "near optimal online algorithms and fast approximation algorithms for resource allocation problems"
    - "introduction to online convex optimization"
    - "a primal dual learning algorithm for personalized dynamic pricing with an inventory constraint"
    - "fast algorithms for online stochastic convex programming"
    - "a dynamic near optimal algorithm for online linear programming"

Connected through hyperedge HE-6 (induced by source paper "learning to advertise with adaptive exposure via constrained two level reinforcement learning"):
  with members:
    - "learning to collaborate multi scenario ranking via multi agent reinforcement learning"
    - "deep reinforcement learning for sponsored search real time bidding"
    - "reward constrained policy optimization"
    - "reinforcement learning to rank in e commerce search engine formalization analysis and application"
    - "budget constrained bidding by model free reinforcement learning in display advertising"
    - "hindsight experience replay"
    - "reinforcement mechanism design for e commerce"
    - "real time bidding by reinforcement learning in display advertising"

Connected through hyperedge HE-7 (induced by source paper "learning adaptive display exposure for real time advertising"):
  with members:
    - "deep reinforcement learning for sponsored search real time bidding"
    - "reward constrained policy optimization"
    - "reinforcement learning to rank in e commerce search engine formalization analysis and application"
    - "budget constrained bidding by model free reinforcement learning in display advertising"
    - "hindsight experience replay"
    - "reinforcement mechanism design for e commerce"
    - "real time bidding by reinforcement learning in display advertising"
    - "constrained policy optimization"

Connected through hyperedge HE-8 (induced by source paper "incorporating behavioral constraints in online ai systems"):
  with members:
    - "ai safety gridworlds"
    - "context attentive bandits contextual bandit with restricted context"
    - "the social dilemma of autonomous vehicles"
    - "linear contextual bandits with knapsacks"
    - "matroid bandits fast combinatorial optimization with learning"
    - "playing atari with deep reinforcement learning"
    - "thompson sampling for contextual bandits with linear payoffs"
    - "analysis of thompson sampling for the multi armed bandit problem"

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.LG(Machine Learning)