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We study the query complexity of a learner-private sequential learning problem, motivated by the privacy and security concerns due to eavesdropping that arise in practical applications such as pricing and Federated Learning. A learner tries…

Machine Learning · Statistics 2020-08-18 Jiaming Xu , Kuang Xu , Dana Yang

Query optimization has become a research area where classical algorithms are being challenged by machine learning algorithms. At the same time, recent trends in learned query optimizers have shown that it is prudent to take advantage of…

Databases · Computer Science 2025-06-16 Pavel Sulimov , Claude Lehmann , Kurt Stockinger

Enhancing LLMs with the ability to actively search external knowledge is crucial for complex and real-world tasks. Current approaches either rely on prompting to elicit the model's innate agent capabilities, or suffer from performance…

Computation and Language · Computer Science 2026-03-20 Chenyang Gu , Yewen Pu , Bruce Yang , Xiaofan Li , Huan Gao

Generating texts from structured data (e.g., a table) is important for various natural language processing tasks such as question answering and dialog systems. In recent studies, researchers use neural language models and encoder-decoder…

Computation and Language · Computer Science 2017-09-04 Lei Sha , Lili Mou , Tianyu Liu , Pascal Poupart , Sujian Li , Baobao Chang , Zhifang Sui

Many existing transfer learning methods rely on leveraging information from source data that closely resembles the target data. However, this approach often overlooks valuable knowledge that may be present in different yet potentially…

Machine Learning · Computer Science 2023-09-14 Xin Xiong , Zijian Guo , Tianxi Cai

Distributed online learning is gaining increased traction due to its unique ability to process large-scale datasets and streaming data. To address the growing public awareness and concern on privacy protection, plenty of algorithms have…

Machine Learning · Computer Science 2024-08-27 Ziqin Chen , Yongqiang Wang

We address the problem of answering queries over a distributed information system, storing objects indexed by terms organized in a taxonomy. The taxonomy consists of subsumption relationships between negation-free DNF formulas on terms and…

Distributed, Parallel, and Cluster Computing · Computer Science 2011-09-13 Carlo Meghini , Yannis Tzitzikas , Veronica Coltella , Anastasia Analyti

With rapidly increasing distributed deep learning workloads in large-scale data centers, efficient distributed deep learning framework strategies for resource allocation and workload scheduling have become the key to high-performance deep…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-06-13 Feng Liang , Zhen Zhang , Haifeng Lu , Chengming Li , Victor C. M. Leung , Yanyi Guo , Xiping Hu

To continuously generate trajectories for serial manipulators with high dimensional degrees of freedom (DOF) in the dynamic environment, a real-time optimal trajectory generation method based on machine learning aiming at high dimensional…

Robotics · Computer Science 2018-12-19 Shiyu Zhang , Shuling Dai

In this paper we design a novel class of online distributed optimization algorithms leveraging control theoretical techniques. We start by focusing on quadratic costs, and assuming to know an internal model of their variation. In this…

Optimization and Control · Mathematics 2026-01-21 Wouter J. A. van Weerelt , Nicola Bastianello

This paper proposes a cooperative environmental learning algorithm working in a fully distributed manner. A multi-robot system is more effective for exploration tasks than a single robot, but it involves the following challenges: 1) online…

Robotics · Computer Science 2021-12-30 Dohyun Jang , Jaehyun Yoo , Clark Youngdong Son , H. Jin Kim

We consider a distributed learning setup where a network of agents sequentially access realizations of a set of random variables with unknown distributions. The network objective is to find a parametrized distribution that best describes…

Optimization and Control · Mathematics 2016-05-10 Angelia Nedić , Alex Olshevsky , César Uribe

Traditional query optimization relies on cost-based optimizers that estimate execution cost (e.g., runtime, memory, and I/O) using predefined heuristics and statistical models. Improving these heuristics requires substantial engineering…

Databases · Computer Science 2026-02-12 Mehmet Hamza Erol , Xiangpeng Hao , Federico Bianchi , Ciro Greco , Jacopo Tagliabue , James Zou

A fundamental problem in data management is to find the elements in an array that match a query. Recently, learned indexes are being extensively used to solve this problem, where they learn a model to predict the location of the items in…

Databases · Computer Science 2023-06-21 Sepanta Zeighami , Cyrus Shahabi

Large language models (LLMs) have achieved promising results in tabular data generation. However, inherent historical biases in tabular datasets often cause LLMs to exacerbate fairness issues, particularly when multiple advantaged and…

Machine Learning · Computer Science 2025-09-23 Tianchun Li , Tianci Liu , Xingchen Wang , Rongzhe Wei , Pan Li , Lu Su , Jing Gao

Although the many efforts to apply deep reinforcement learning to query optimization in recent years, there remains room for improvement as query optimizers are complex entities that require hand-designed tuning of workloads and datasets.…

Databases · Computer Science 2023-06-05 Yuri Kim , Yewon Choi , Yujung Gil , Sanghee Lee , Heesik Shin , Jaehyok Chong

As RDF becomes more widely established and the amount of linked data is rapidly increasing, the efficient querying of large amount of data becomes a significant challenge. In this paper, we propose a family of algorithms for querying large…

Databases · Computer Science 2022-09-13 Eleftherios Kalogeros , Manolis Gergatsoulis , Matthew Damigos , Christos Nomikos

Traditional query processing relies on engines that are carefully optimized and engineered by many experts. However, new techniques and user requirements evolve rapidly, and existing systems often cannot keep pace. At the same time, these…

Databases · Computer Science 2026-03-03 Jiale Lao , Immanuel Trummer

Control of large-scale networked systems often necessitates the availability of complex models for the interactions amongst the agents. However in many applications, building accurate models of agents or interactions amongst them might be…

Optimization and Control · Mathematics 2019-03-21 Siavash Alemzadeh , Mehran Mesbahi

Data replication is a common method used to improve the performance of data access in distributed database systems. In this paper, we present an object replication algorithm in distributed database systems (ORAD). We optimize the created…

Databases · Computer Science 2012-10-08 Arash Ghorbannia Delavar , Golnoosh Keshani