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Model customization necessitates high-quality and diverse datasets, but acquiring such data remains time-consuming and labor-intensive. Despite the great potential of large language models (LLMs) for data synthesis, current approaches are…

机器学习 · 计算机科学 2025-06-24 Sheng Wang , Pengan Chen , Jingqi Zhou , Qintong Li , Jingwei Dong , Jiahui Gao , Boyang Xue , Jiyue Jiang , Lingpeng Kong , Chuan Wu

This work presents a novel method for fitting superquadrics to point clouds under the contamination of noise and outliers, which has many applications for shape modeling across diverse fields. Unlike prior approaches that either exclusively…

计算机视觉与模式识别 · 计算机科学 2026-05-19 Mingyang Zhao , Sipu Ruan , Xiaohong Jia

We provide efficient constant factor approximation algorithms for the problems of finding a hierarchical clustering of a point set in any metric space, minimizing the sum of minimimum spanning tree lengths within each cluster, and in the…

计算几何 · 计算机科学 2009-07-08 David Eppstein

Image denoising is a critical task in various scientific fields such as medical imaging and material characterization, where the accurate recovery of underlying structures from noisy data is essential. Although supervised denoising…

图像与视频处理 · 电气工程与系统科学 2025-02-12 Jianxin Xie , Wonhee Ko , Rui-Xing Zhang , Bing Yao

We introduce a novel method for training machine learning models in the presence of noisy labels, which are prevalent in domains such as medical diagnosis and autonomous driving and have the potential to degrade a model's generalization…

机器学习 · 计算机科学 2024-06-26 Farooq Ahmad Wani , Maria Sofia Bucarelli , Fabrizio Silvestri

The (unweighted) tree edit distance problem for $n$ node trees asks to compute a measure of dissimilarity between two rooted trees with node labels. The current best algorithm from more than a decade ago runs in $O(n ^ 3)$ time [Demaine,…

数据结构与算法 · 计算机科学 2021-11-12 Xiao Mao

Self-supervised image denoising techniques emerged as convenient methods that allow training denoising models without requiring ground-truth noise-free data. Existing methods usually optimize loss metrics that are calculated from multiple…

Recent advancements in semi-supervised deep learning have introduced effective strategies for leveraging both labeled and unlabeled data to improve classification performance. This work proposes a semi-supervised framework that utilizes a…

机器学习 · 计算机科学 2025-05-21 Aydin Abedinia , Shima Tabakhi , Vahid Seydi

While neural-based text to speech (TTS) models can synthesize natural and intelligible voice, they usually require high-quality speech data, which is costly to collect. In many scenarios, only noisy speech of a target speaker is available,…

音频与语音处理 · 电气工程与系统科学 2020-12-21 Chen Zhang , Yi Ren , Xu Tan , Jinglin Liu , Kejun Zhang , Tao Qin , Sheng Zhao , Tie-Yan Liu

Multi-step reasoning remains a central challenge for large language models: single-pass generation is efficient but lacks accuracy; tree-search methods explore multiple paths but are computation-heavy. We address this gap by distilling…

人工智能 · 计算机科学 2026-05-29 Yuyu Liu , Haotian Xu , Yanan He , Sarang Rajendra Patil , Mengjia Xu , Tengfei Ma

Randomized experiments have been critical tools of decision making for decades. However, subjects can show significant heterogeneity in response to treatments in many important applications. Therefore it is not enough to simply know which…

机器学习 · 计算机科学 2017-09-13 Yan Zhao , Xiao Fang , David Simchi-Levi

Assisted by the availability of data and high performance computing, deep learning techniques have achieved breakthroughs and surpassed human performance empirically in difficult tasks, including object recognition, speech recognition, and…

机器学习 · 计算机科学 2019-01-23 Shaeke Salman , Xiuwen Liu

Reliable learning of multimodal data (e.g., multi-omics) is a widely concerning issue, especially in safety-critical applications such as medical diagnosis. However, low-quality data induced by multimodal noise poses a major challenge in…

计算机视觉与模式识别 · 计算机科学 2026-02-06 Shu Shen , C. L. Philip Chen , Tong Zhang

High-quality point cloud data is a critical foundation for tasks such as autonomous driving and 3D reconstruction. However, LiDAR-based point cloud acquisition is often affected by various disturbances, resulting in a large number of noise…

计算机视觉与模式识别 · 计算机科学 2026-01-06 Ge Zhang , Chunyang Wang , Bin Liu , Guan Xi

Merge trees are fundamental structures in topological data analysis. Interleaving distance is a widely accepted metric for comparing merge trees, with applications in visualization and scientific computing. While a greedy algorithm exists…

计算几何 · 计算机科学 2025-09-22 Elena Farahbakhsh Touli , Talha Bin Masood

Geometric representation learning has recently shown great promise in several machine learning settings, ranging from relational learning to language processing and generative models. In this work, we consider the problem of performing…

机器学习 · 统计学 2020-05-29 Gian Maria Marconi , Lorenzo Rosasco , Carlo Ciliberto

Real-world large-scale datasets are heteroskedastic and imbalanced -- labels have varying levels of uncertainty and label distributions are long-tailed. Heteroskedasticity and imbalance challenge deep learning algorithms due to the…

机器学习 · 计算机科学 2021-03-19 Kaidi Cao , Yining Chen , Junwei Lu , Nikos Arechiga , Adrien Gaidon , Tengyu Ma

Although deep learning has produced dazzling successes for applications of image, speech, and video processing in the past few years, most trainings are with suboptimal hyper-parameters, requiring unnecessarily long training times. Setting…

机器学习 · 计算机科学 2018-04-25 Leslie N. Smith

Tree boosting is a highly effective and widely used machine learning method. In this paper, we describe a scalable end-to-end tree boosting system called XGBoost, which is used widely by data scientists to achieve state-of-the-art results…

机器学习 · 计算机科学 2016-06-14 Tianqi Chen , Carlos Guestrin

Animal vocalization denoising is a task similar to human speech enhancement, which is relatively well-studied. In contrast to the latter, it comprises a higher diversity of sound production mechanisms and recording environments, and this…