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Query optimizers in RDBMSs search for execution plans expected to be optimal for given queries. They use parameter estimates, often inaccurate, and make assumptions that may not hold in practice. Consequently, they may select plans that are…

数据库 · 计算机科学 2025-05-27 Amin Kamali , Verena Kantere , Calisto Zuzarte , Vincent Corvinelli

This paper presents an asynchronous incremental aggregated gradient algorithm and its implementation in a parameter server framework for solving regularized optimization problems. The algorithm can handle both general convex (possibly…

最优化与控制 · 数学 2016-10-19 Arda Aytekin , Hamid Reza Feyzmahdavian , Mikael Johansson

In this paper, a novel and generic multi-objective design paradigm is proposed which utilizes quantum-behaved PSO(QPSO) for deciding the optimal configuration of the LQR controller for a given problem considering a set of competing…

神经与进化计算 · 计算机科学 2016-07-05 Kaveh Hassani , Won-Sook Lee

While deep neural networks have demonstrated remarkable performance across various tasks, they typically require massive training data. Due to the presence of redundancies and biases in real-world datasets, not all data in the training…

人工智能 · 计算机科学 2023-12-12 Suorong Yang , Hongchao Yang , Suhan Guo , Furao Shen , Jian Zhao

Adapting models pre-trained on large-scale datasets is a proven way to reach strong performance quickly for down-stream tasks. However, the growth of state-of-the-art mod-els makes traditional full fine-tuning unsuitable and difficult,…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Maxime Fontana , Michael Spratling , Miaojing Shi

Hyperparameter selection in continual learning scenarios is a challenging and underexplored aspect, especially in practical non-stationary environments. Traditional approaches, such as grid searches with held-out validation data from all…

机器学习 · 计算机科学 2024-06-21 Rudy Semola , Julio Hurtado , Vincenzo Lomonaco , Davide Bacciu

In the present noisy intermediate scale quantum computing era, there is a critical need to devise methods for the efficient implementation of gate-based variational quantum circuits. This ensures that a range of proposed applications can be…

量子物理 · 物理学 2024-08-27 Ankit Kulshrestha , Xiaoyuan Liu , Hayato Ushijima-Mwesigwa , Bao Bach , Ilya Safro

Adapting Large Language Models (LLMs) to specialized domains typically incurs high data and computational overhead. While prior efficiency efforts have largely treated data selection and parameter-efficient fine-tuning as isolated…

机器学习 · 计算机科学 2026-05-22 Hao Chen , Qi Zhang , Liyao Li , Zhanming Shen , Wentao Ye , Lirong Gao , Ningtao Wang , Xing Fu , Xiaoyu Shen , Junbo Zhao

Surrogate Optimization (SO) algorithms have shown promise for optimizing expensive black-box functions. However, their performance is heavily influenced by hyperparameters related to sampling and surrogate fitting, which poses a challenge…

机器学习 · 计算机科学 2023-10-13 Nazanin Nezami , Hadis Anahideh

The increasing complexity of IoT applications and the continuous growth in data generated by connected devices have led to significant challenges in managing resources and meeting performance requirements in computing continuum…

分布式、并行与集群计算 · 计算机科学 2025-01-22 Sergio Laso , Ilir Murturi , Pantelis Frangoudis , Juan Luis Herrera , Juan M. Murillo , Schahram Dustdar

The growing deployment of sensors as part of Internet of Things (IoT) is generating thousands of event streams. Complex Event Processing (CEP) queries offer a useful paradigm for rapid decision-making over such data sources. While often…

分布式、并行与集群计算 · 计算机科学 2019-05-10 Rajrup Ghosh , Siva Prakash Reddy Komma , Yogesh Simmhan

Reliable and secure operation of power systems becomes increasingly challenging as the share of volatile generation rises, leading to largely changing dynamics. Typically, the architecture and structure of controllers in power systems, such…

系统与控制 · 电气工程与系统科学 2020-05-06 A. Mesanovic , U. Münz , A. Szabo , M. Mangold , J. Bamberger , M. Metzger , C. Heyde , R. Krebs , R. Findeisen

Sparse training reduces the memory and computational costs of deep neural networks. However, sparse optimization methods, e.g., those adding an $\ell_1$ penalty, often control sparsity only indirectly through a regularization parameter…

机器学习 · 计算机科学 2026-05-21 Ahmad Aloradi , Tim Roith , Emanuël A. P. Habets , Daniel Tenbrinck

Parameter-efficient fine-tuning (PEFT) methods have shown promise in adapting large language models, yet existing approaches exhibit counter-intuitive phenomena: integrating router into prompt tuning (PT) increases training efficiency yet…

计算与语言 · 计算机科学 2025-05-15 Zongqian Li , Yixuan Su , Nigel Collier

Spark is an in-memory analytics platform that targets commodity server environments today. It relies on the Hadoop Distributed File System (HDFS) to persist intermediate checkpoint states and final processing results. In Spark, immutable…

分布式、并行与集群计算 · 计算机科学 2017-08-22 Mijung Kim , Jun Li , Haris Volos , Manish Marwah , Alexander Ulanov , Kimberly Keeton , Joseph Tucek , Lucy Cherkasova , Le Xu , Pradeep Fernando

Selecting appropriate values for the configurable parameters of Database Management Systems (DBMS) to improve performance is a significant challenge. Recent machine learning (ML)-based tuning systems have shown strong potential, but their…

数据库 · 计算机科学 2026-04-01 Yibo Wang , Jiale Lao , Chen Zhang , Cehua Yang , Jianguo Wang , Mingjie Tang

Fine-tuning is a promising technique for leveraging Transformer-based language models in downstream tasks. As model sizes continue to grow, updating all model parameters becomes increasingly costly. Parameter-efficient fine-tuning methods…

计算与语言 · 计算机科学 2025-06-27 Xiaoshuang Ji , Zhendong Zhao , Xiaojun Chen , Xin Zhao , Zeyao Liu

Model routing chooses which language model to use for each query. By sending easy queries to cheaper models and hard queries to stronger ones, it can significantly reduce inference cost while maintaining high accuracy. However, most…

机器学习 · 计算机科学 2026-02-17 Qi Cao , Shuhao Zhang , Ruizhe Zhou , Ruiyi Zhang , Peijia Qin , Pengtao Xie

In this paper, we consider the problem of stochastic optimization, where the objective function is in terms of the expectation of a (possibly non-convex) cost function that is parametrized by a random variable. While the convergence speed…

信息论 · 计算机科学 2019-10-23 Naeimeh Omidvar , An Liu , Vincent Lau , Danny H. K. Tsang , Mohammad Reza Pakravan

Configuration space complexity makes the big-data software systems hard to configure well. Consider Hadoop, with over nine hundred parameters, developers often just use the default configurations provided with Hadoop distributions. The…

系统与控制 · 电气工程与系统科学 2020-06-24 Rahul Krishna , Chong Tang , Kevin Sullivan , Baishakhi Ray