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We introduce FB-LISA, a forward-backward (FB) generalization of a recently proposed line-search-based stochastic gradient algorithm to address the imaging problem of volumetric reconstruction in Computed Tomography, a substantially high…

Numerical Analysis · Mathematics 2026-05-13 Tatiana A. Bubba , Elena Morotti , Federica Porta , Valeria Ruggiero , Ilaria Trombini

Retrieval-Augmented Generation (RAG) pipelines are central to applying large language models (LLMs) to proprietary or dynamic data. However, building effective RAG flows is complex, requiring careful selection among vector databases,…

Artificial Intelligence · Computer Science 2025-05-27 Alexander Conway , Debadeepta Dey , Stefan Hackmann , Matthew Hausknecht , Michael Schmidt , Mark Steadman , Nick Volynets

The plug-and-play priors (PnP) framework has been recently shown to achieve state-of-the-art results in regularized image reconstruction by leveraging a sophisticated denoiser within an iterative algorithm. In this paper, we propose a new…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Yu Sun , Shiqi Xu , Yunzhe Li , Lei Tian , Brendt Wohlberg , Ulugbek S. Kamilov

Recent advancements in neural network-based optical flow estimation often come with prohibitively high computational and memory requirements, presenting challenges in their model adaptation for mobile and low-power use cases. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Risheek Garrepalli , Jisoo Jeong , Rajeswaran C Ravindran , Jamie Menjay Lin , Fatih Porikli

Coherent X-ray diffraction imaging (CXDI) experiments are intrinsically limited by shot noise, a lack of prior knowledge about the sample's support, and missing measurements due to the experimental geometry. We propose a flexible, iterative…

Biological Physics · Physics 2017-03-03 Liang Shi , Gordon Wetzstein , Thomas J. Lane

The recent rise of large language models (LLMs) has resulted in increased efforts towards running LLMs at reduced precision. Running LLMs at lower precision supports resource constraints and furthers their democratization, enabling users to…

Machine Learning · Computer Science 2023-07-10 Lakshmi Nair , Mikhail Bernadskiy , Arulselvan Madhavan , Craig Chan , Ayon Basumallik , Darius Bunandar

While large language models (LLMs) have been applied to automatic speech recognition (ASR), the task of making the model streamable remains a challenge. This paper proposes a novel model architecture, Transducer-Llama, that integrates LLMs…

Computation and Language · Computer Science 2024-12-24 Keqi Deng , Jinxi Guo , Yingyi Ma , Niko Moritz , Philip C. Woodland , Ozlem Kalinli , Mike Seltzer

Large language models (LLMs) are increasingly employed for complex multi-step planning tasks, where the tool retrieval (TR) step is crucial for achieving successful outcomes. Two prevalent approaches for TR are single-step retrieval, which…

Information Retrieval · Computer Science 2023-12-19 Raviteja Anantha , Bortik Bandyopadhyay , Anirudh Kashi , Sayantan Mahinder , Andrew W Hill , Srinivas Chappidi

Robust fine-tuning aims to achieve competitive in-distribution (ID) performance while maintaining the out-of-distribution (OOD) robustness of a pre-trained model when transferring it to a downstream task. Recently, projected gradient…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Junjiao Tian , Yen-Cheng Liu , James Seale Smith , Zsolt Kira

This study introduces an online target sound extraction (TSE) process using the similarity-and-independence-aware beamformer (SIBF) derived from an iterative batch algorithm. The study aimed to reduce latency while maintaining extraction…

Audio and Speech Processing · Electrical Eng. & Systems 2024-10-07 Atsuo Hiroe

Retrieving relevant evidence from visually rich documents such as textbooks, technical reports, and manuals is challenging due to long context, complex layouts, and weak lexical overlap between user questions and supporting pages. We…

Information Retrieval · Computer Science 2026-03-31 Seonok Kim

Large language models (LLMs) demonstrate exceptional performance in numerous tasks but still heavily rely on knowledge stored in their parameters. Moreover, updating this knowledge incurs high training costs. Retrieval-augmented generation…

Computation and Language · Computer Science 2024-06-07 Yanming Liu , Xinyue Peng , Xuhong Zhang , Weihao Liu , Jianwei Yin , Jiannan Cao , Tianyu Du

Text-based person anomaly retrieval has emerged as a challenging task, with most existing approaches relying on complex deep-learning techniques. This raises a research question: How can the model be optimized to achieve greater…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Tien-Huy Nguyen , Huu-Loc Tran , Huu-Phong Phan-Nguyen , Quang-Vinh Dinh

Retrieval-augmented in-context learning has emerged as a powerful approach for addressing knowledge-intensive tasks using frozen language models (LM) and retrieval models (RM). Existing work has combined these in simple "retrieve-then-read"…

Computation and Language · Computer Science 2023-01-24 Omar Khattab , Keshav Santhanam , Xiang Lisa Li , David Hall , Percy Liang , Christopher Potts , Matei Zaharia

Transfer learning can be seen as a data- and compute-efficient alternative to training models from scratch. The emergence of rich model repositories, such as TensorFlow Hub, enables practitioners and researchers to unleash the potential of…

Machine Learning · Computer Science 2022-09-29 Cedric Renggli , Xiaozhe Yao , Luka Kolar , Luka Rimanic , Ana Klimovic , Ce Zhang

Recent deep learning methods for fMRI-based diagnosis have achieved promising accuracy by modeling functional connectivity networks. However, standard approaches often struggle with noisy interactions, and conventional post-hoc attribution…

Machine Learning · Computer Science 2026-02-25 Kunyu Zhang , Yanwu Yang , Jing Zhang , Xiangjie Shi , Shujian Yu

Recent advances in Large Language Models (LLMs) have driven the adoption of copilots in complex technical scenarios, underscoring the growing need for specialized information retrieval solutions. In this paper, we introduce FLAIR, a…

Information Retrieval · Computer Science 2025-08-20 William Zhang , Yiwen Zhu , Yunlei Lu , Mathieu Demarne , Wenjing Wang , Kai Deng , Nutan Sahoo , Katherine Lin , Miso Cilimdzic , Subru Krishnan

This paper presents an efficient algorithm for robust network reconstruction of Linear Time-Invariant (LTI) systems in the presence of noise, estimation errors and unmodelled nonlinearities. The method here builds on previous work on robust…

Dynamical Systems · Mathematics 2016-11-18 David Hayden , Ye Yuan , Jorge Gonçalves

This work introduces the LLM Online Spatial-temporal Reconstruction (LLM-OSR) framework, which integrates Graph Signal Processing (GSP) and Large Language Models (LLMs) for online spatial-temporal signal reconstruction. The LLM-OSR utilizes…

Machine Learning · Computer Science 2024-11-26 Yi Yan , Dayu Qin , Ercan Engin Kuruoglu

Generative models are capable to address difficult problems with non-unique solutions like bandwidth extension and gap filling, removing highly non-linear artifacts from codecs, clipping and distortion, as opposed to removing linear…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-18 Sebastian Braun