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This paper presents an efficient method to perform Structured Matrix Approximation by Separation and Hierarchy (SMASH), when the original dense matrix is associated with a kernel function. Given points in a domain, a tree structure is first…

数值分析 · 数学 2017-05-17 Difeng Cai , Edmond Chow , Yousef Saad , Yuanzhe Xi

The quality of machine learning models depends heavily on their training data. Selecting high-quality, diverse training sets for large language models (LLMs) is a difficult task, due to the lack of cheap and reliable quality metrics. While…

机器学习 · 计算机科学 2026-01-30 Robert Istvan Busa-Fekete , Julian Zimmert , Anne Xiangyi Zheng , Claudio Gentile , Andras Gyorgy

The problem of selecting small groups of itemsets that represent the data well has recently gained a lot of attention. We approach the problem by searching for the itemsets that compress the data efficiently. As a compression technique we…

数据结构与算法 · 计算机科学 2019-02-08 Nikolaj Tatti , Jilles Vreeken

Since only a small number of traces generated from distributed tracing helps in troubleshooting, its storage requirement can be significantly reduced by biasing the selection towards anomalous traces. To aid in this scenario, we propose…

分布式、并行与集群计算 · 计算机科学 2022-10-11 Alim Ul Gias , Yicheng Gao , Matthew Sheldon , José A. Perusquía , Owen O'Brien , Giuliano Casale

In this paper, multivalued data or multiple values variables are defined. They are typical when there is some intrinsic uncertainty in data production, as the result of imprecise measuring instruments, such as in image recognition, in human…

应用统计 · 统计学 2016-07-14 Roberta Siciliano , Massimo Aria , Antonio D'Ambrosio , Valentina Cozza

Although remarkable progress has been made in image style transfer, style is just one of the components of artistic paintings. Directly transferring extracted style features to natural images often results in outputs with obvious synthetic…

计算机视觉与模式识别 · 计算机科学 2025-05-16 Nisha Huang , Weiming Dong , Yuxin Zhang , Fan Tang , Ronghui Li , Chongyang Ma , Xiu Li , Tong-Yee Lee , Changsheng Xu

Machine learning (ML) is increasingly being deployed in programmable data planes (switches and SmartNICs) to enable real-time traffic analysis, security monitoring, and in-network decision-making. Decision trees (DTs) are particularly…

网络与互联网体系结构 · 计算机科学 2025-09-03 Murayyiam Parvez , Annus Zulfiqar , Roman Beltiukov , Shir Landau Feibish , Walter Willinger , Arpit Gupta , Muhammad Shahbaz

Offering rich contexts to Large Language Models (LLMs) has shown to boost the performance in various tasks, but the resulting longer prompt would increase the computational cost and might exceed the input limit of LLMs. Recently, some…

计算与语言 · 计算机科学 2025-09-30 Wenhao Mao , Chengbin Hou , Tianyu Zhang , Xinyu Lin , Ke Tang , Hairong Lv

In recent years, with the rapid advancements in large language models (LLMs), achieving excellent empathetic response capabilities has become a crucial prerequisite. Consequently, managing and understanding empathetic datasets have gained…

计算与语言 · 计算机科学 2024-08-13 Hao Liang , Linzhuang Sun , Jingxuan Wei , Xijie Huang , Linkun Sun , Bihui Yu , Conghui He , Wentao Zhang

Mathematical reasoning remains challenging for LLMs due to complex logic and the need for precise computation. Existing methods enhance LLM reasoning by synthesizing datasets through problem rephrasing, but face issues with generation…

计算与语言 · 计算机科学 2025-06-12 Lei Xu , Sirui Chen , Yuxuan Huang , Chaochao Lu

Time series analysis is crucial for understanding dynamics of complex systems. Recent advances in foundation models have led to task-agnostic Time Series Foundation Models (TSFMs) and Large Language Model-based Time Series Models (TSLLMs),…

This paper describes a method for creating structure from heterogeneous sources, as part of an information database, or more specifically, a 'concept base'. Structures called 'concept trees' can grow from the semi-structured sources when…

信息检索 · 计算机科学 2015-03-17 Kieran Greer

Although deep learning has demonstrated remarkable capability in learning from unstructured data, modern tree-based ensemble models remain superior in extracting relevant information and learning from structured datasets. While several…

机器学习 · 计算机科学 2026-02-05 Yi-Chun Liao , Chieh-Lin Tsai , Yuan-Hao Chang , Camélia Slimani , Jalil Boukhobza , Tei-Wei Kuo

Tree ensembles are flexible predictive models that can capture relevant variables and to some extent their interactions in a compact and interpretable manner. Most algorithms for obtaining tree ensembles are based on versions of boosting or…

机器学习 · 统计学 2020-02-21 Gitesh Dawer , Yangzi Guo , Adrian Barbu

Automatic detection of depression is a rapidly growing field of research at the intersection of psychology and machine learning. However, with its exponential interest comes a growing concern for data privacy and scarcity due to the…

机器学习 · 计算机科学 2024-11-27 Andrea Kang , Jun Yu Chen , Zoe Lee-Youngzie , Shuhao Fu

Source code can be parsed into the abstract syntax tree (AST) based on defined syntax rules. However, in pre-training, little work has considered the incorporation of tree structure into the learning process. In this paper, we present…

机器学习 · 计算机科学 2021-07-16 Xue Jiang , Zhuoran Zheng , Chen Lyu , Liang Li , Lei Lyu

Synthetic data augmentation via large language models (LLMs) allows researchers to leverage additional training data, thus enhancing the performance of downstream tasks, especially when real-world data is scarce. However, the generated data…

机器学习 · 计算机科学 2025-03-25 Hsun-Yu Kuo , Yin-Hsiang Liao , Yu-Chieh Chao , Wei-Yun Ma , Pu-Jen Cheng

Large-scale delineation of individual trees from remote sensing imagery is crucial to the advancement of ecological research, particularly as climate change and other environmental factors rapidly transform forest landscapes across the…

计算机视觉与模式识别 · 计算机科学 2025-06-04 Michelle Chen , David Russell , Amritha Pallavoor , Derek Young , Jane Wu

Analyzing data from past clinical trials is part of the ongoing effort to optimize the design, implementation, and execution of new clinical trials and more efficiently bring life-saving interventions to market. While there have been recent…

机器学习 · 计算机科学 2024-12-16 Chufan Gao , Mandis Beigi , Afrah Shafquat , Jacob Aptekar , Jimeng Sun

Measuring the complexity of tree structures can be beneficial in areas that use tree data structures for storage, communication, and processing purposes. This complexity can then be used to compress tree data structures to their…

信息论 · 计算机科学 2023-09-19 Amirmohammad Farzaneh , Mihai-Alin Badiu , Justin P. Coon