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This work aims to reproduce results from the CVPR 2020 paper by Gidaris et al. Self-supervised learning (SSL) is used to learn feature representations of an image using an unlabeled dataset. This work proposes to use bag-of-words (BoW) deep…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Harry Nguyen , Stone Yun , Hisham Mohammad

``Classical'' word embeddings, such as Word2Vec, have been shown to capture the semantics of words based on their distributional properties. However, their ability to represent the different meanings that a word may have is limited. Such…

计算与语言 · 计算机科学 2020-04-20 Lea Dieudonat , Kelvin Han , Phyllicia Leavitt , Esteban Marquer

There is rising interest in vector-space word embeddings and their use in NLP, especially given recent methods for their fast estimation at very large scale. Nearly all this work, however, assumes a single vector per word type ignoring…

计算与语言 · 计算机科学 2015-04-28 Arvind Neelakantan , Jeevan Shankar , Alexandre Passos , Andrew McCallum

Word embeddings -- distributed representations of words -- in deep learning are beneficial for many tasks in natural language processing (NLP). However, different embedding sets vary greatly in quality and characteristics of the captured…

计算与语言 · 计算机科学 2015-12-31 Wenpeng Yin , Hinrich Schütze

Recently, word representation has been increasingly focused on for its excellent properties in representing the word semantics. Previous works mainly suffer from the problem of polysemy phenomenon. To address this problem, most of previous…

计算与语言 · 计算机科学 2015-11-20 Xinchi Chen , Xipeng Qiu , Jingxiang Jiang , Xuanjing Huang

This paper presents a challenge to the community: Generative adversarial networks (GANs) can perfectly align independent English word embeddings induced using the same algorithm, based on distributional information alone; but fails to do…

计算与语言 · 计算机科学 2018-09-05 Mareike Hartmann , Yova Kementchedjhieva , Anders Søgaard

This work examines the possibility of using syllable embeddings, instead of the often used $n$-gram embeddings, as subword embeddings. We investigate this for two languages: English and Dutch. To this end, we also translated two standard…

计算与语言 · 计算机科学 2022-01-14 Laurent Mertens , Joost Vennekens

Research on word embeddings has mainly focused on improving their performance on standard corpora, disregarding the difficulties posed by noisy texts in the form of tweets and other types of non-standard writing from social media. In this…

计算与语言 · 计算机科学 2020-10-02 Yerai Doval , Jesús Vilares , Carlos Gómez-Rodríguez

Despite interest in using cross-lingual knowledge to learn word embeddings for various tasks, a systematic comparison of the possible approaches is lacking in the literature. We perform an extensive evaluation of four popular approaches of…

计算与语言 · 计算机科学 2016-06-09 Shyam Upadhyay , Manaal Faruqui , Chris Dyer , Dan Roth

This paper presents an extensive comparative study of four neural network models, including feed-forward networks, convolutional networks, recurrent networks and long short-term memory networks, on two sentence classification datasets of…

计算与语言 · 计算机科学 2018-10-04 Phuong Le-Hong , Anh-Cuong Le

We introduce a method for embedding words as probability densities in a low-dimensional space. Rather than assuming that a word embedding is fixed across the entire text collection, as in standard word embedding methods, in our Bayesian…

计算与语言 · 计算机科学 2018-06-12 Arthur Bražinskas , Serhii Havrylov , Ivan Titov

Recent work on word embeddings has shown that simple vector subtraction over pre-trained embeddings is surprisingly effective at capturing different lexical relations, despite lacking explicit supervision. Prior work has evaluated this…

计算与语言 · 计算机科学 2016-08-16 Ekaterina Vylomova , Laura Rimell , Trevor Cohn , Timothy Baldwin

Word embedding learning methods require a large number of occurrences of a word to accurately learn its embedding. However, out-of-vocabulary (OOV) words which do not appear in the training corpus emerge frequently in the smaller downstream…

计算与语言 · 计算机科学 2021-02-25 Gordon Buck , Andreas Vlachos

This paper evaluates existing and newly proposed answer selection methods based on pre-trained word embeddings. Word embeddings are highly effective in various natural language processing tasks and their integration into traditional…

信息检索 · 计算机科学 2017-08-16 Rishav Chakravarti , Jiri Navratil , Cicero Nogueira dos Santos

We inspect the long-term learning ability of Long Short-Term Memory language models (LSTM LMs) by evaluating a contextual extension based on the Continuous Bag-of-Words (CBOW) model for both sentence- and discourse-level LSTM LMs and by…

计算与语言 · 计算机科学 2021-06-17 Wim Boes , Robbe Van Rompaey , Lyan Verwimp , Joris Pelemans , Hugo Van hamme , Patrick Wambacq

The bag-of-words (BOW) model is the common approach for classifying documents, where words are used as feature for training a classifier. This generally involves a huge number of features. Some techniques, such as Latent Semantic Analysis…

计算与语言 · 计算机科学 2015-04-13 Rémi Lebret , Ronan Collobert

We introduce BilBOWA (Bilingual Bag-of-Words without Alignments), a simple and computationally-efficient model for learning bilingual distributed representations of words which can scale to large monolingual datasets and does not require…

机器学习 · 统计学 2016-02-05 Stephan Gouws , Yoshua Bengio , Greg Corrado

Continuous-output neural machine translation (CoNMT) replaces the discrete next-word prediction problem with an embedding prediction. The semantic structure of the target embedding space (i.e., closeness of related words) is intuitively…

计算与语言 · 计算机科学 2024-04-03 Evgeniia Tokarchuk , Vlad Niculae

In this work, we establish a novel theoretical connection between supervised fine-tuning and offline reinforcement learning under the token-level Markov decision process, revealing that large language models indeed learn an implicit…

计算与语言 · 计算机科学 2025-06-03 Junjie Zhang , Rushuai Yang , Shunyu Liu , Ting-En Lin , Fei Huang , Yi Chen , Yongbin Li , Dacheng Tao

While paragraph embedding models are remarkably effective for downstream classification tasks, what they learn and encode into a single vector remains opaque. In this paper, we investigate a state-of-the-art paragraph embedding method…

计算与语言 · 计算机科学 2019-06-11 Tu Vu , Mohit Iyyer