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Concepts are used to solve the term-mismatch problem. However, we need an effective similarity measure between concepts. Word embedding presents a promising solution. We present in this study three approaches to build concepts vectors based…

信息检索 · 计算机科学 2020-02-05 Karam Abdulahhad

Acoustic word embeddings --- fixed-dimensional vector representations of arbitrary-length words --- have attracted increasing interest in query-by-example spoken term detection. Recently, on the fact that the orthography of text labels…

音频与语音处理 · 电气工程与系统科学 2019-10-02 Myunghun Jung , Hyungjun Lim , Jahyun Goo , Youngmoon Jung , Hoirin Kim

We propose to learn word embeddings from visual co-occurrences. Two words co-occur visually if both words apply to the same image or image region. Specifically, we extract four types of visual co-occurrences between object and attribute…

计算机视觉与模式识别 · 计算机科学 2019-08-23 Tanmay Gupta , Alexander Schwing , Derek Hoiem

Recent methods for learning vector space representations of words have succeeded in capturing fine-grained semantic and syntactic regularities using vector arithmetic. However, these vector space representations (created through large-scale…

计算与语言 · 计算机科学 2016-05-17 Martin Andrews

While cross-lingual word embeddings have been studied extensively in recent years, the qualitative differences between the different algorithms remain vague. We observe that whether or not an algorithm uses a particular feature set…

计算与语言 · 计算机科学 2017-01-11 Omer Levy , Anders Søgaard , Yoav Goldberg

Pre-trained language models such as BERT have become a more common choice of natural language processing (NLP) tasks. Research in word representation shows that isotropic embeddings can significantly improve performance on downstream tasks.…

计算与语言 · 计算机科学 2021-08-30 Yuxin Liang , Rui Cao , Jie Zheng , Jie Ren , Ling Gao

Word embeddings learnt from large corpora have been adopted in various applications in natural language processing and served as the general input representations to learning systems. Recently, a series of post-processing methods have been…

机器学习 · 计算机科学 2019-10-25 Shuai Tang , Mahta Mousavi , Virginia R. de Sa

Word vector representations are central to deep learning natural language processing models. Many forms of these vectors, known as embeddings, exist, including word2vec and GloVe. Embeddings are trained on large corpora and learn the word's…

计算与语言 · 计算机科学 2020-07-16 Salvador E. Barbosa

Text embeddings are numerical representations of text data, where words, phrases, or entire documents are converted into vectors of real numbers. These embeddings capture semantic meanings and relationships between text elements in a…

信息检索 · 计算机科学 2025-01-20 Fusheng Wei , Robert Neary , Han Qin , Qiang Mao , Jianping Zhang

We present an introductory investigation into continuous-space vector representations of sentences. We acquire pairs of very similar sentences differing only by a small alterations (such as change of a noun, adding an adjective, noun or…

计算与语言 · 计算机科学 2019-10-09 Petra Barančíková , Ondřej Bojar

This paper presents a new technique for creating monolingual and cross-lingual meta-embeddings. Our method integrates multiple word embeddings created from complementary techniques, textual sources, knowledge bases and languages. Existing…

计算与语言 · 计算机科学 2021-09-09 Iker García-Ferrero , Rodrigo Agerri , German Rigau

We propose new static word embeddings optimised for sentence semantic representation. We first extract word embeddings from a pre-trained Sentence Transformer, and improve them with sentence-level principal component analysis, followed by…

计算与语言 · 计算机科学 2025-10-01 Takashi Wada , Yuki Hirakawa , Ryotaro Shimizu , Takahiro Kawashima , Yuki Saito

We address two challenges of probabilistic topic modelling in order to better estimate the probability of a word in a given context, i.e., P(word|context): (1) No Language Structure in Context: Probabilistic topic models ignore word order…

计算与语言 · 计算机科学 2019-02-26 Pankaj Gupta , Yatin Chaudhary , Florian Buettner , Hinrich Schütze

We study the problem of grounding distributional representations of texts on the visual domain, namely visual-semantic embeddings (VSE for short). Begin with an insightful adversarial attack on VSE embeddings, we show the limitation of…

计算与语言 · 计算机科学 2018-06-28 Haoyue Shi , Jiayuan Mao , Tete Xiao , Yuning Jiang , Jian Sun

A common approach for sequence tagging tasks based on contextual word representations is to train a machine learning classifier directly on these embedding vectors. This approach has two shortcomings. First, such methods consider single…

In this paper, we propose methods for discovering semantic differences in words appearing in two corpora based on the norms of contextualized word vectors. The key idea is that the coverage of meanings is reflected in the norm of its mean…

计算与语言 · 计算机科学 2023-05-22 Ryo Nagata , Hiroya Takamura , Naoki Otani , Yoshifumi Kawasaki

Multilingual (or cross-lingual) embeddings represent several languages in a unique vector space. Using a common embedding space enables for a shared semantic between words from different languages. In this paper, we propose to embed images…

计算机视觉与模式识别 · 计算机科学 2019-05-15 Maxime Portaz , Hicham Randrianarivo , Adrien Nivaggioli , Estelle Maudet , Christophe Servan , Sylvain Peyronnet

Word embeddings, which represent a word as a point in a vector space, have become ubiquitous to several NLP tasks. A recent line of work uses bilingual (two languages) corpora to learn a different vector for each sense of a word, by…

计算与语言 · 计算机科学 2017-06-27 Shyam Upadhyay , Kai-Wei Chang , Matt Taddy , Adam Kalai , James Zou

In recent years, word embeddings have been surprisingly effective at capturing intuitive characteristics of the words they represent. These vectors achieve the best results when training corpora are extremely large, sometimes billions of…

计算与语言 · 计算机科学 2017-12-06 Willie Boag , Hassan Kané

Recent research in cross-lingual word embeddings has almost exclusively focused on offline methods, which independently train word embeddings in different languages and map them to a shared space through linear transformations. While…

计算与语言 · 计算机科学 2021-12-28 Aitor Ormazabal , Mikel Artetxe , Gorka Labaka , Aitor Soroa , Eneko Agirre