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We show how to modify the linear-time construction algorithm for suffix arrays based on induced sorting (Nong et al., DCC'09) such that it computes the array of longest common prefixes (LCP-array) as well. Practical tests show that this…

数据结构与算法 · 计算机科学 2011-01-19 Johannes Fischer

Recently, neural network (NN)-based image compression studies have actively been made and has shown impressive performance in comparison to traditional methods. However, most of the works have focused on non-scalable image compression…

图像与视频处理 · 电气工程与系统科学 2026-01-06 Jongmin Park , Jooyoung Lee , Munchurl Kim

This paper studies a formulation of 1-bit Compressed Sensing (CS) problem based on the maximum likelihood estimation framework. In order to solve the problem we apply the recently proposed Gradient Support Pursuit algorithm, with a minor…

信息论 · 计算机科学 2013-04-25 Sohail Bahmani , Petros T. Boufounos , Bhiksha Raj

The goal in signal compression is to reduce the size of the input signal without a significant loss in the quality of the recovered signal. One way to achieve this goal is to apply the principles of compressive sensing, but this has not…

信号处理 · 电气工程与系统科学 2020-03-09 Fereshteh Fakhar Firouzeh , John W. Chinneck , Sreeraman Rajan

Most end-to-end speech recognition systems model text directly as a sequence of characters or sub-words. Current approaches to sub-word extraction only consider character sequence frequencies, which at times produce inferior sub-word…

计算与语言 · 计算机科学 2019-02-22 Hainan Xu , Shuoyang Ding , Shinji Watanabe

We present a compressed representation of tries based on top tree compression [ICALP 2013] that works on a standard, comparison-based, pointer machine model of computation and supports efficient prefix search queries. Namely, we show how to…

数据结构与算法 · 计算机科学 2019-09-23 Philip Bille , Inge Li Gørtz , Paweł Gawrychowski , Gad M. Landau , Oren Weimann

The goal of grammar compression is to construct a small sized context free grammar which uniquely generates the input text data. Among grammar compression methods, RePair is known for its good practical compression performance. MR-RePair…

数据结构与算法 · 计算机科学 2019-10-31 Isamu Furuya

A wide range of constraints can be compactly specified using automata or formal languages. In a sequence of recent papers, we have shown that an effective means to reason with such specifications is to decompose them into primitive…

人工智能 · 计算机科学 2009-03-04 Claude-Guy Quimper , Toby Walsh

As a fundamental task in natural language processing, word embedding converts each word into a representation in a vector space. A challenge with word embedding is that as the vocabulary grows, the vector space's dimension increases, which…

计算与语言 · 计算机科学 2024-11-05 Jintang Xue , Yun-Cheng Wang , Chengwei Wei , C. -C. Jay Kuo

In this paper we present an application of a simple technique of local recompression, previously developed by the author in the context of compressed membership problems and compressed pattern matching, to word equations. The technique is…

形式语言与自动机理论 · 计算机科学 2014-03-19 Artur Jeż

We propose a method to learn unsupervised sentence representations in a non-compositional manner based on Generative Latent Optimization. Our approach does not impose any assumptions on how words are to be combined into a sentence…

计算与语言 · 计算机科学 2019-08-14 Sidak Pal Singh , Angela Fan , Michael Auli

To select the most relevant sentences of a document, it uses an optimal decision algorithm that combines several metrics. The metrics processes, weighting and extract pertinence sentences by statistical and informational algorithms. This…

信息检索 · 计算机科学 2009-05-20 Juan-Manuel Torres-Moreno , Pier-Luc St-Onge , Michel Gagnon , Marc El-Bèze , Patrice Bellot

Grammar-based compression is a loss-less data compression scheme that represents a given string $w$ by a context-free grammar that generates only $w$. While computing the smallest grammar which generates a given string $w$ is NP-hard in…

组合数学 · 数学 2022-04-18 Takuya Mieno , Shunsuke Inenaga , Takashi Horiyama

Multi-Sentence Compression (MSC) aims to generate a short sentence with the key information from a cluster of similar sentences. MSC enables summarization and question-answering systems to generate outputs combining fully formed sentences…

Sentence compression reduces the length of text by removing non-essential content while preserving important facts and grammaticality. Unsupervised objective driven methods for sentence compression can be used to create customized models…

计算与语言 · 计算机科学 2022-05-18 Demian Gholipour Ghalandari , Chris Hokamp , Georgiana Ifrim

This paper introduces a new type of unsupervised learning algorithm, based on the alignment of sentences and Harris's (1951) notion of interchangeability. The algorithm is applied to an untagged, unstructured corpus of natural language…

机器学习 · 计算机科学 2009-09-25 Menno van Zaanen

Readers find text difficult to consume for many reasons. Summarization can address some of these difficulties, but introduce others, such as omitting, misrepresenting, or hallucinating information, which can be hard for a reader to notice.…

人机交互 · 计算机科学 2024-01-22 Ziwei Gu , Ian Arawjo , Kenneth Li , Jonathan K. Kummerfeld , Elena L. Glassman

This work presents a Fourier analysis framework for the non-interactive source simulation (NISS) problem. Two distributed agents observe a pair of sequences $X^d$ and $Y^d$ drawn according to a joint distribution $P_{X^dY^d}$. The agents…

信息论 · 计算机科学 2024-03-05 Hojat Allah Salehi , Farhad Shirani

We introduce a new family of compressed data structures to efficiently store and query large string dictionaries in main memory. Our main technique is a combination of hierarchical Front-coding with ideas from longest-common-prefix…

数据结构与算法 · 计算机科学 2019-11-20 Nieves R. Brisaboa , Ana Cerdeira-Pena , Guillermo de Bernardo , Gonzalo Navarro

This paper presents a new deep learning architecture for Natural Language Inference (NLI). Firstly, we introduce a new architecture where alignment pairs are compared, compressed and then propagated to upper layers for enhanced…

计算与语言 · 计算机科学 2018-09-11 Yi Tay , Luu Anh Tuan , Siu Cheung Hui