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In this paper, we present two adaptive methods for the basis enrichment of the mixed Generalized Multiscale Finite Element Method (GMsFEM) for solving the flow problem in heterogeneous media. We develop an a-posteriori error indicator which…

数值分析 · 数学 2015-07-08 Ho Yuen Chan , Eric T. Chung , Yalchin Efendiev

Diffusion models are receiving a growing interest for a variety of signal generation tasks such as speech or music synthesis. WaveGrad, for example, is a successful diffusion model that conditionally uses the mel spectrogram to guide a…

声音 · 计算机科学 2024-02-27 Haocheng Liu , Teysir Baoueb , Mathieu Fontaine , Jonathan Le Roux , Gael Richard

We propose a block-online algorithm of guided source separation (GSS). GSS is a speech separation method that uses diarization information to update parameters of the generative model of observation signals. Previous studies have shown that…

音频与语音处理 · 电气工程与系统科学 2020-11-17 Shota Horiguchi , Yusuke Fujita , Kenji Nagamatsu

We present a framework, DISORF, to enable online 3D reconstruction and visualization of scenes captured by resource-constrained mobile robots and edge devices. To address the limited computing capabilities of edge devices and potentially…

机器人学 · 计算机科学 2024-08-05 Chunlin Li , Hanrui Fan , Xiaorui Huang , Ruofan Liang , Sankeerth Durvasula , Nandita Vijaykumar

Set projection algorithms are a class of algorithms used in ptychography to help improve the quality of the reconstructed images. The set projection step is important because it helps to ensure that the reconstructed image satisfies the…

信号处理 · 电气工程与系统科学 2023-11-21 Wenjie Mei , Andrew M. Maiden

In this work we review the coarse-to-fine spatial feature pyramid concept, which is used in state-of-the-art optical flow estimation networks to make exploration of the pixel flow search space computationally tractable and efficient. Within…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Markus Hofinger , Samuel Rota Bulò , Lorenzo Porzi , Arno Knapitsch , Thomas Pock , Peter Kontschieder

We study computationally and statistically efficient reinforcement learning under the linear $Q^{\pi}$ realizability assumption, where any policy's $Q$-function is linear in a given state-action feature representation. Prior methods in this…

机器学习 · 计算机科学 2026-03-03 Yijing Ke , Zihan Zhang , Ruosong Wang

We address the problem of recovering a signal (up to global phase) from its short-time Fourier transform (STFT) magnitude measurements. This problem arises in several applications, including optical imaging and speech processing. In this…

信息论 · 计算机科学 2015-10-06 Tamir Bendory , Yonina C. Eldar

We propose ELIS, a serving system for Large Language Models (LLMs) featuring an Iterative Shortest Remaining Time First (ISRTF) scheduler designed to efficiently manage inference tasks with the shortest remaining tokens. Current LLM serving…

分布式、并行与集群计算 · 计算机科学 2025-05-15 Seungbeom Choi , Jeonghoe Goo , Eunjoo Jeon , Mingyu Yang , Minsung Jang

Robust local feature representations are essential for spatial intelligence tasks such as robot navigation and augmented reality. Establishing reliable correspondences requires descriptors that provide both high discriminative power and…

计算机视觉与模式识别 · 计算机科学 2026-01-15 Haodi Yao , Fenghua He , Ning Hao , Yao Su

Retrieval models are key components of Retrieval-Augmented Generation (RAG) systems, which generate search queries, process the documents returned, and generate a response. RAG systems are often dynamic and may involve multiple rounds of…

信息检索 · 计算机科学 2026-01-16 Eugene Yang , Andrew Yates , Dawn Lawrie , James Mayfield , Trevor Adriaanse

Iterative algorithms with feedback are amongst the most powerful and versatile optimization methods for phase retrieval. Among these, the hybrid input-output algorithm has demonstrated practical solutions to giga-element nonlinear phase…

光学 · 物理学 2007-11-13 S. Marchesini

3D global relocalization is one of the key capabilities for mobile robots in practical applications. However, in large scale spaces, existing methods often suffer from prolonged online relocalization time due to factors such as the massive…

机器人学 · 计算机科学 2026-05-11 Jiahua Ren , Kai Shen , Muhua Zhang , Lei Ma

Functional MRI (fMRI) is commonly used for interpreting neural activities across the brain. Numerous accelerated fMRI techniques aim to provide improved spatiotemporal resolutions. Among these, simultaneous multi-slice (SMS) imaging has…

With the advent of large language models (LLMs), managing scientific literature via LLMs has become a promising direction of research. However, existing approaches often overlook the rich structural and semantic relevance among scientific…

社会与信息网络 · 计算机科学 2025-12-19 Jiasheng Zhang , Jialin Chen , Ali Maatouk , Ngoc Bui , Qianqian Xie , Leandros Tassiulas , Jie Shao , Hua Xu , Rex Ying

Foundation models (FMs) have achieved remarkable success across a wide range of applications, from image classification to natural langurage processing, but pose significant challenges for deployment at edge. This has sparked growing…

机器学习 · 计算机科学 2025-07-17 Muhammad Azlan Qazi , Alexandros Iosifidis , Qi Zhang

Finite-State Machines (FSMs) are critical for modeling the operational logic of network protocols, enabling verification, analysis, and vulnerability discovery. However, existing FSM extraction techniques face limitations such as…

计算与语言 · 计算机科学 2025-07-16 Fares Wael , Youssef Maklad , Ali Hamdi , Wael Elsersy

Recent work has shown that directly fine-tuning large language models (LLMs) for dense retrieval yields strong performance, but their substantial parameter counts make them computationally inefficient. While prior studies have revealed…

信息检索 · 计算机科学 2025-12-24 Yibin Lei , Shwai He , Ang Li , Andrew Yates

Supervised fine-tuning (SFT) is a standard approach to adapting large language models (LLMs) to new domains. In this work, we improve the statistical efficiency of SFT by selecting an informative subset of training examples. Specifically,…

Over the past several decades, many different types of computational imaging approaches have been proposed for improving MRI. In this paper, we provide an overview of methods that assume that MRI Fourier data is linearly predictable. Linear…

信号处理 · 电气工程与系统科学 2020-02-19 Justin P. Haldar , Kawin Setsompop