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Grounding (i.e. localizing) arbitrary, free-form textual phrases in visual content is a challenging problem with many applications for human-computer interaction and image-text reference resolution. Few datasets provide the ground truth…

计算机视觉与模式识别 · 计算机科学 2017-02-21 Anna Rohrbach , Marcus Rohrbach , Ronghang Hu , Trevor Darrell , Bernt Schiele

Transformers have achieved state-of-the-art results across multiple NLP tasks. However, the self-attention mechanism complexity scales quadratically with the sequence length, creating an obstacle for tasks involving long sequences, like in…

计算与语言 · 计算机科学 2022-04-20 Belen Alastruey , Javier Ferrando , Gerard I. Gállego , Marta R. Costa-jussà

A large number of deep learning models have been proposed for the text matching problem, which is at the core of various typical natural language processing (NLP) tasks. However, existing deep models are mainly designed for the semantic…

计算与语言 · 计算机科学 2019-02-28 Ting Zhang , Bang Liu , Di Niu , Kunfeng Lai , Yu Xu

Graph centrality measures use the structure of a network to quantify central or "important" nodes, with applications in web search, social media analysis, and graphical data mining generally. Traditional centrality measures such as the well…

社会与信息网络 · 计算机科学 2021-01-20 Liang Lyu , Brandon Fain , Kamesh Munagala , Kangning Wang

Eigenvector centrality is a standard network analysis tool for determining the importance of (or ranking of) entities in a connected system that is represented by a graph. However, many complex systems and datasets have natural multi-way…

社会与信息网络 · 计算机科学 2019-03-25 Austin R. Benson

We propose a self-supervised Gaussian ATtention network for image Clustering (GATCluster). Rather than extracting intermediate features first and then performing the traditional clustering algorithm, GATCluster directly outputs semantic…

计算机视觉与模式识别 · 计算机科学 2020-06-09 Chuang Niu , Jun Zhang , Ge Wang , Jimin Liang

In this article, we consider eigenvector centrality for the nodes of a graph and study the robustness (and stability) of this popular centrality measure. For a given weighted graph {\mathcal G} (both directed and undirected), we consider…

数值分析 · 数学 2025-08-14 Michele Benzi , Nicola Guglielmi

A mind-map is a diagram that represents the central concept and key ideas in a hierarchical way. Converting plain text into a mind-map will reveal its key semantic structure and be easier to understand. Given a document, the existing…

计算与语言 · 计算机科学 2021-09-07 Mengting Hu , Honglei Guo , Shiwan Zhao , Hang Gao , Zhong Su

Unsupervised document summarization has re-acquired lots of attention in recent years thanks to its simplicity and data independence. In this paper, we propose a graph-based unsupervised approach for extractive document summarization.…

计算与语言 · 计算机科学 2021-04-23 Haopeng Zhang , Jiawei Zhang

Inspired by recent work in machine translation and object detection, we introduce an attention based model that automatically learns to describe the content of images. We describe how we can train this model in a deterministic manner using…

The paper approaches the task of handwritten text recognition (HTR) with attentional encoder-decoder networks trained on sequences of characters, rather than words. We experiment on lines of text from popular handwriting datasets and…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Jason Poulos , Rafael Valle

Attention-based transformer models have achieved remarkable progress in multi-modal tasks, such as visual question answering. The explainability of attention-based methods has recently attracted wide interest as it can explain the inner…

计算机视觉与模式识别 · 计算机科学 2023-08-22 Yiming Huang , Aozhe Jia , Xiaodan Zhang , Jiawei Zhang

This work studies comparatively two typical sentence matching tasks: textual entailment (TE) and answer selection (AS), observing that weaker phrase alignments are more critical in TE, while stronger phrase alignments deserve more attention…

计算与语言 · 计算机科学 2017-01-10 Wenpeng Yin , Hinrich Schütze

While the self-attention mechanism has been widely used in a wide variety of tasks, it has the unfortunate property of a quadratic cost with respect to the input length, which makes it difficult to deal with long inputs. In this paper, we…

计算与语言 · 计算机科学 2020-09-30 Xiaoya Li , Yuxian Meng , Mingxin Zhou , Qinghong Han , Fei Wu , Jiwei Li

Pre-training Transformer from large-scale raw texts and fine-tuning on the desired task have achieved state-of-the-art results on diverse NLP tasks. However, it is unclear what the learned attention captures. The attention computed by…

计算与语言 · 计算机科学 2019-11-05 Yau-Shian Wang , Hung-Yi Lee , Yun-Nung Chen

Neural network architectures in natural language processing often use attention mechanisms to produce probability distributions over input token representations. Attention has empirically been demonstrated to improve performance in various…

计算与语言 · 计算机科学 2021-05-10 George Chrysostomou , Nikolaos Aletras

One of the main challenges in ranking is embedding the query and document pairs into a joint feature space, which can then be fed to a learning-to-rank algorithm. To achieve this representation, the conventional state of the art approaches…

计算与语言 · 计算机科学 2018-08-09 Dana Sagi , Tzoof Avny , Kira Radinsky , Eugene Agichtein

We explore methods to extract relations between named entities from free text in an unsupervised setting. In addition to standard feature extraction, we develop a novel method to re-weight word embeddings. We alleviate the problem of…

计算与语言 · 计算机科学 2018-01-23 Hady Elsahar , Elena Demidova , Simon Gottschalk , Christophe Gravier , Frederique Laforest

In this paper, we propose two automated text processing frameworks specifically designed to analyze online reviews. The objective of the first framework is to summarize the reviews dataset by extracting essential sentence. This is performed…

计算与语言 · 计算机科学 2020-04-22 Xiangpeng Wan , Hakim Ghazzai , Yehia Massoud

Lattices are an efficient and effective method to encode ambiguity of upstream systems in natural language processing tasks, for example to compactly capture multiple speech recognition hypotheses, or to represent multiple linguistic…

计算与语言 · 计算机科学 2019-06-05 Matthias Sperber , Graham Neubig , Ngoc-Quan Pham , Alex Waibel