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We show new results about the garden-hose model. Our main results include improved lower bounds based on non-deterministic communication complexity (leading to the previously unknown $\Theta(n)$ bounds for Inner Product mod 2 and…

计算复杂性 · 计算机科学 2014-12-17 Hartmut Klauck , Supartha Podder

Boosted decision trees enjoy popularity in a variety of applications; however, for large-scale datasets, the cost of training a decision tree in each round can be prohibitively expensive. Inspired by ideas from the multi-arm bandit…

机器学习 · 计算机科学 2018-05-22 Maryam Aziz , Jesse Anderton , Javed Aslam

We introduce a new model for studying quantum data structure problems -- the "quantum cell probe model". We prove a lower bound for the static predecessor problem in the address-only version of this model where we allow quantum parallelism…

量子物理 · 物理学 2007-05-23 Pranab Sen , S. Venkatesh

In automated machine learning, scientific discovery, and other applications of Bayesian optimization, deciding when to stop evaluating expensive black-box functions in a cost-aware manner is an important but underexplored practical…

机器学习 · 计算机科学 2025-12-29 Qian Xie , Linda Cai , Alexander Terenin , Peter I. Frazier , Ziv Scully

In this paper, we provide a generic anytime lower bounding procedure for minmax regret optimization problems. We show that the lower bound obtained is always at least as accurate as the lower bound recently proposed by Chassein and Goerigk…

数据结构与算法 · 计算机科学 2017-07-12 Hugo Gilbert , Olivier Spanjaard

Efficient optimal prefix coding has long been accomplished via the Huffman algorithm. However, there is still room for improvement and exploration regarding variants of the Huffman problem. Length-limited Huffman coding, useful for many…

信息论 · 计算机科学 2007-07-13 Michael B. Baer

We address the problem of minimizing a smooth function under smooth equality constraints. Under regularity assumptions on these constraints, we propose a notion of approximate first- and second-order critical point which relies on the…

最优化与控制 · 数学 2024-01-18 Florentin Goyens , Armin Eftekhari , Nicolas Boumal

We obtain a new lower bound on the information-based complexity of first-order minimization of smooth and convex functions. We show that the bound matches the worst-case performance of the recently introduced Optimized Gradient Method,…

最优化与控制 · 数学 2016-06-07 Yoel Drori

We consider the problem of minimizing the weighted makespan on a single machine with restarts. Restarts are similar to preemptions but weaker: a job can be interrupted, but then it has to be run again from the start instead of resuming at…

数据结构与算法 · 计算机科学 2025-10-13 Aflatoun Amouzandeh , Klaus Jansen , Lis Pirotton , Rob van Stee , Corinna Wambsganz

We study the fundamental tradeoffs between computational tractability and statistical accuracy for a general family of hypothesis testing problems with combinatorial structures. Based upon an oracle model of computation, which captures the…

机器学习 · 统计学 2015-12-31 Zhaoran Wang , Quanquan Gu , Han Liu

Given $n$ jobs with processing times $p_1,\dotsc,p_n\in\mathbb N$ and $m\le n$ machines with speeds $s_1,\dotsc,s_m\in\mathbb N$ our goal is to allocate the jobs to machines minimizing the makespan. We present an algorithm that solves the…

数据结构与算法 · 计算机科学 2025-01-10 Lars Rohwedder

LZ77-based compression schemes compress the input text by replacing factors in the text with an encoded reference to a previous occurrence formed by the couple (length, offset). For a given factor, the smallest is the offset, the smallest…

数据结构与算法 · 计算机科学 2012-11-22 Maxime Crochemore , Alessio Langiu , Filippo Mignosi

We prove a general lower bound on the average-case complexity of Shellsort: the average number of data-movements (and comparisons) made by a $p$-pass Shellsort for any incremental sequence is $\Omega (pn^{1 + 1/p})$ for every $p$. The proof…

计算复杂性 · 计算机科学 2015-01-29 Tao Jiang , Ming Li , Paul Vitanyi

We amplify previous discussions of the fine-tuning price to be paid by supersymmetric models in the light of LEP data, especially the lower bound on the Higgs boson mass, studying in particular its power of discrimination between different…

高能物理 - 唯象学 · 物理学 2009-09-11 P. H. Chankowski , J. Ellis , M. Olechowski , S. Pokorski

We build upon the recent papers by Weinstein and Yu (FOCS'16), Larsen (FOCS'12), and Clifford et al. (FOCS'15) to present a general framework that gives amortized lower bounds on the update and query times of dynamic data structures. Using…

数据结构与算法 · 计算机科学 2019-02-07 Sayan Bhattacharya , Monika Henzinger , Stefan Neumann

We consider the reachability problem for timed automata. A standard solution to this problem involves computing a search tree whose nodes are abstractions of zones. For efficiency reasons, they are parametrized by the maximal lower and…

计算机科学中的逻辑 · 计算机科学 2013-01-21 Frédéric Herbreteau , B. Srivathsan , Igor Walukiewicz

We study how to utilize (possibly erroneous) predictions in a model for computing under uncertainty in which an algorithm can query unknown data. Our aim is to minimize the number of queries needed to solve the minimum spanning tree…

数据结构与算法 · 计算机科学 2022-07-01 Thomas Erlebach , Murilo Santos de Lima , Nicole Megow , Jens Schlöter

We consider off-policy evaluation (OPE), which evaluates the performance of a new policy from observed data collected from previous experiments, without requiring the execution of the new policy. This finds important applications in areas…

机器学习 · 计算机科学 2020-08-18 Yihao Feng , Tongzheng Ren , Ziyang Tang , Qiang Liu

This paper is about minimum cost constrained selection of inputs and outputs for generic arbitrary pole placement. The input-output set is constrained in the sense that the set of states that each input can influence and the set of states…

最优化与控制 · 数学 2018-01-11 Shana Moothedath , Prasanna Chaporkar , Madhu N. Belur

A crucial problem in reinforcement learning is learning the optimal policy. We study this in tabular infinite-horizon discounted Markov decision processes under the online setting. The existing algorithms either fail to achieve regret…

机器学习 · 计算机科学 2023-12-13 Xiang Ji , Gen Li