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We introduce "pointer-guided segment ordering" (SO), a novel pre-training technique aimed at enhancing the contextual understanding of paragraph-level text representations in large language models. Our methodology leverages a…

计算与语言 · 计算机科学 2024-06-07 Lars Hillebrand , Prabhupad Pradhan , Christian Bauckhage , Rafet Sifa

Reduced Order Modelling (ROM) has been widely used to create lower order, computationally inexpensive representations of higher-order dynamical systems. Using these representations, ROMs can efficiently model flow fields while using…

流体动力学 · 物理学 2021-10-13 Pranshu Pant , Ruchit Doshi , Pranav Bahl , Amir Barati Farimani

Mobility on Demand (MoD) refers to mobility systems that operate on the basis of immediate travel demand. Typically, such a system consists of a fleet of vehicles that can be booked by customers when needed. The operation of these services…

多智能体系统 · 计算机科学 2025-01-08 Tarek Chouaki , Sebastian Hörl , Jakob Puchinger

Visually rich documents (VRDs) challenge retrieval-augmented generation (RAG) with layout-dependent semantics, brittle OCR, and evidence spread across complex figures and structured tables. This survey examines how Multimodal Large Language…

信息检索 · 计算机科学 2026-01-08 Xiantao Zhang

With recent advancements in Large Language Models (LLMs) and growing interest in retrieval-augmented generation (RAG), the ability to understand table structures has become increasingly important. This is especially critical in financial…

计算与语言 · 计算机科学 2025-05-26 Hayato Aida , Kosuke Takahashi , Takahiro Omi

Reading text from images or scanned documents via OCR models has been a longstanding focus of researchers. Intuitively, text reading is perceived as a straightforward perceptual task, and existing work primarily focuses on constructing…

计算机视觉与模式识别 · 计算机科学 2026-01-15 Yufeng Zhong , Lei Chen , Zhixiong Zeng , Xuanle Zhao , Deyang Jiang , Liming Zheng , Jing Huang , Haibo Qiu , Peng Shi , Siqi Yang , Lin Ma

In the random-order model for online learning, the sequence of losses is chosen upfront by an adversary and presented to the learner after a random permutation. Any random-order input is \emph{asymptotically} equivalent to a stochastic…

Reduced order models are computationally inexpensive approximations that capture the important dynamical characteristics of large, high-fidelity computer models of physical systems. This paper applies machine learning techniques to improve…

机器学习 · 计算机科学 2015-11-11 Azam Moosavi , Razvan Stefanescu , Adrian Sandu

Spatial reasoning is a fundamental aspect of human cognition, enabling intuitive understanding and manipulation of objects in three-dimensional space. While foundation models demonstrate remarkable performance on some benchmarks, they still…

计算机视觉与模式识别 · 计算机科学 2025-03-12 Fan-Yun Sun , Weiyu Liu , Siyi Gu , Dylan Lim , Goutam Bhat , Federico Tombari , Manling Li , Nick Haber , Jiajun Wu

Since their release, Transformers have revolutionized many fields from Natural Language Understanding to Computer Vision. Document Understanding (DU) was not left behind with first Transformer based models for DU dating from late 2019.…

计算与语言 · 计算机科学 2023-09-12 Thibault Douzon , Stefan Duffner , Christophe Garcia , Jérémy Espinas

Fine-tuning Large Language Models (LLMs) with first-order methods like back-propagation is computationally intensive. Zeroth-Order (ZO) optimisation uses function evaluations instead of gradients, reducing memory usage, but suffers from…

计算与语言 · 计算机科学 2025-07-24 Alessio Galatolo , Zhenbang Dai , Katie Winkle , Meriem Beloucif

Large Language Models (LLMs) suffer from order bias, where their performance is affected by the arrangement order of input elements. This unfairness limits the model's applications in scenarios such as in-context learning and…

机器学习 · 计算机科学 2026-05-13 Xu Chu , Guanyu Wang , Zhijie Tan , Xinrong Chen , Ziyu Li , Tong Mo , Weiping Li

Reinforcement learning has been applied in operation research and has shown promise in solving large combinatorial optimization problems. However, existing works focus on developing neural network architectures for certain problems. These…

最优化与控制 · 数学 2023-03-24 Ching Pui Wan , Tung Li , Jason Min Wang

Mathematical morphology provides a nonlinear framework for image and spatial data processing and analysis. Although there have been many successful applications of mathematical morphology to vector-valued images, such as color and…

计算机视觉与模式识别 · 计算机科学 2025-09-09 Marcos Eduardo Valle , Santiago Velasco-Forero , Joao Batista Florindo , Gustavo Jesus Angulo

Ordering has been extensively studied in many visualization applications, such as axis and matrix reordering, for the simple reason that the order will greatly impact the perceived pattern of data. Many quality metrics concerning data…

机器学习 · 计算机科学 2024-12-19 Zehua Yu , Weihan Zhang , Sihan Pan , Jun Tao

Machine Reading at Scale (MRS) is a challenging task in which a system is given an input query and is asked to produce a precise output by "reading" information from a large knowledge base. The task has gained popularity with its natural…

计算与语言 · 计算机科学 2019-09-19 Yixin Nie , Songhe Wang , Mohit Bansal

When reading a document, glancing at the spatial layout of a document is an initial step to understand it roughly. Traditional document layout analysis (DLA) methods, however, offer only a superficial parsing of documents, focusing on basic…

计算机视觉与模式识别 · 计算机科学 2025-02-05 Yufan Chen , Ruiping Liu , Junwei Zheng , Di Wen , Kunyu Peng , Jiaming Zhang , Rainer Stiefelhagen

Recent efforts of multimodal Transformers have improved Visually Rich Document Understanding (VrDU) tasks via incorporating visual and textual information. However, existing approaches mainly focus on fine-grained elements such as words and…

计算机视觉与模式识别 · 计算机科学 2022-09-20 Wenjin Wang , Zhengjie Huang , Bin Luo , Qianglong Chen , Qiming Peng , Yinxu Pan , Weichong Yin , Shikun Feng , Yu Sun , Dianhai Yu , Yin Zhang

Document layout analysis (DLA) is the task of detecting the distinct, semantic content within a document and correctly classifying these items into an appropriate category (e.g., text, title, figure). DLA pipelines enable users to convert…

When applying learning to rank algorithms to Web search, a large number of features are usually designed to capture the relevance signals. Most of these features are computed based on the extracted textual elements, link analysis, and user…

信息检索 · 计算机科学 2017-10-20 Yixing Fan , Jiafeng Guo , Yanyan Lan , Jun Xu , Liang Pang , Xueqi Cheng