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Self-attention (SA) based models have recently achieved significant performance improvements in hybrid and end-to-end automatic speech recognition (ASR) systems owing to their flexible context modeling capability. However, it is also known…

音频与语音处理 · 电气工程与系统科学 2021-02-19 Yosuke Kashiwagi , Emiru Tsunoo , Shinji Watanabe

Enumerative kernelization is a recent and promising area sitting at the intersection of parameterized complexity and enumeration algorithms. Its study began with the paper of Creignou et al. [Theory Comput. Syst., 2017], and development in…

数据结构与算法 · 计算机科学 2025-09-11 Marin Bougeret , Guilherme C. M. Gomes , Vinicius F. dos Santos , Ignasi Sau

Principal Component Analysis (PCA) is a well known procedure to reduce intrinsic complexity of a dataset, essentially through simplifying the covariance structure or the correlation structure. We introduce a novel algebraic, model-based…

统计方法学 · 统计学 2021-12-09 Martin Schlather , Felix Reinbott

We give an information-theoretic interpretation of Canonical Correlation Analysis (CCA) via (relaxed) Wyner's common information. CCA permits to extract from two high-dimensional data sets low-dimensional descriptions (features) that…

信息论 · 计算机科学 2020-03-02 Michael Gastpar , Erixhen Sula

This paper describes a technique to compare large text sources using word vector representations (word2vec) and dimensionality reduction (t-SNE) and how it can be implemented using Python. The technique provides a bird's-eye view of text…

计算与语言 · 计算机科学 2016-07-05 Hendrik Heuer

In this paper a framework for Automatic Query Expansion (AQE) is proposed using distributed neural language model word2vec. Using semantic and contextual relation in a distributed and unsupervised framework, word2vec learns a low…

信息检索 · 计算机科学 2016-06-27 Dwaipayan Roy , Debjyoti Paul , Mandar Mitra , Utpal Garain

A complex nature of big data resources demands new methods for structuring especially for textual content. WordNet is a good knowledge source for comprehensive abstraction of natural language as its good implementations exist for many…

计算与语言 · 计算机科学 2016-06-13 Roman Bartusiak , Łukasz Augustyniak , Tomasz Kajdanowicz , Przemysław Kazienko , Maciej Piasecki

This work proposed kernel selection approaches for probabilistic classifiers based on features produced by the convolutional encoder of a variational autoencoder. Particularly, the developed methodologies allow the selection of the most…

We show that the skip-gram formulation of word2vec trained with negative sampling is equivalent to a weighted logistic PCA. This connection allows us to better understand the objective, compare it to other word embedding methods, and extend…

计算与语言 · 计算机科学 2017-05-30 Andrew J. Landgraf , Jeremy Bellay

Canonical correlation analysis (CCA) is a standard tool for studying associations between two data sources; however, it is not designed for data with count or proportion measurement types. In addition, while CCA uncovers common signals, it…

统计计算 · 统计学 2022-08-02 Dongbang Yuan , Yunfeng Zhang , Shuai Guo , Wenyi Wang , Irina Gaynanova

Probabilistic principal component analysis (PPCA) seeks a low dimensional representation of a data set in the presence of independent spherical Gaussian noise, Sigma = (sigma^2)*I. The maximum likelihood solution for the model is an…

机器学习 · 统计学 2011-06-23 Alfredo A. Kalaitzis , Neil D. Lawrence

Canonical correlation analysis (CCA) is a method for reducing the dimension of data represented using two views. It has been previously used to derive word embeddings, where one view indicates a word, and the other view indicates its…

计算与语言 · 计算机科学 2016-07-28 Dominique Osborne , Shashi Narayan , Shay B. Cohen

We treat grammatical error correction (GEC) as a classification problem in this study, where for different types of errors, a target word is identified, and the classifier predicts the correct word form from a set of possible choices. We…

计算与语言 · 计算机科学 2018-07-03 Zhu Kaili , Chuan Wang , Ruobing Li , Yang Liu , Tianlei Hu , Hui Lin

We address the problem of filling missing entries in a kernel Gram matrix, given a related full Gram matrix. We attack this problem from the viewpoint of regression, assuming that the two kernel matrices can be considered as explanatory…

定量方法 · 定量生物学 2011-11-10 Yoshihiro Yamanishi , Jean-Philippe Vert

Language model based methods are powerful techniques for text classification. However, the models have several shortcomings. (1) It is difficult to integrate human knowledge such as keywords. (2) It needs a lot of resources to train the…

计算与语言 · 计算机科学 2024-02-09 Weijie Xu , Jay Desai , Srinivasan Sengamedu , Xiaoyu Jiang , Francis Iannacci

Most work on natural language question answering today focuses on answer selection: given a candidate list of sentences, determine which contains the answer. Although important, answer selection is only one stage in a standard end-to-end…

信息检索 · 计算机科学 2017-07-26 Royal Sequiera , Gaurav Baruah , Zhucheng Tu , Salman Mohammed , Jinfeng Rao , Haotian Zhang , Jimmy Lin

CPU-based inference can be an alternative to off-chip accelerators, and vector architectures are a promising option due to their efficiency. However, the large design space of convolutional algorithms and hardware implementations makes it…

分布式、并行与集群计算 · 计算机科学 2022-12-23 Sonia Rani Gupta , Nikela Papadopoulou , Miquel Pericas

The term "CoRE kernel" stands for correlation-resemblance kernel. In many applications (e.g., vision), the data are often high-dimensional, sparse, and non-binary. We propose two types of (nonlinear) CoRE kernels for non-binary sparse data…

机器学习 · 统计学 2014-04-25 Ping Li

In this paper, Kernel PCA is reinterpreted as the solution to a convex optimization problem. Actually, there is a constrained convex problem for each principal component, so that the constraints guarantee that the principal component is…

机器学习 · 计算机科学 2017-10-25 Carlos M. Alaíz , Michaël Fanuel , Johan A. K. Suykens

One of the ubiquitous representation of long DNA sequence is dividing it into shorter k-mer components. Unfortunately, the straightforward vector encoding of k-mer as a one-hot vector is vulnerable to the curse of dimensionality. Worse yet,…

定量方法 · 定量生物学 2017-01-24 Patrick Ng