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In this work we leverage recent advances in context-sensitive language models to improve the task of query expansion. Contextualized word representation models, such as ELMo and BERT, are rapidly replacing static embedding models. We…

信息检索 · 计算机科学 2021-03-10 Shahrzad Naseri , Jeffrey Dalton , Andrew Yates , James Allan

Distributed representations of words have shown to be useful to improve the effectiveness of IR systems in many sub-tasks like query expansion, retrieval and ranking. Algorithms like word2vec, GloVe and others are also key factors in many…

信息检索 · 计算机科学 2019-09-05 Tommaso Teofili , Niyati Chhaya

Two task-specific dependency-based word embedding methods are proposed for text classification in this work. In contrast with universal word embedding methods that work for generic tasks, we design task-specific word embedding methods to…

计算与语言 · 计算机科学 2021-10-27 Chengwei Wei , Bin Wang , C. -C. Jay Kuo

In distributional semantics, the pointwise mutual information ($\mathit{PMI}$) weighting of the cooccurrence matrix performs far better than raw counts. There is, however, an issue with unobserved pair cooccurrences as $\mathit{PMI}$ goes…

计算与语言 · 计算机科学 2019-08-20 Alexandre Salle , Aline Villavicencio

As the use of interactive machines grow, the task of Emotion Recognition in Conversation (ERC) became more important. If the machine-generated sentences reflect emotion, more human-like sympathetic conversations are possible. Since emotion…

计算与语言 · 计算机科学 2022-04-22 Joosung Lee , Wooin Lee

Word embeddings are one of the most useful tools in any modern natural language processing expert's toolkit. They contain various types of information about each word which makes them the best way to represent the terms in any NLP task. But…

计算与语言 · 计算机科学 2019-06-20 Armin Seyeditabari , Narges Tabari , Shafie Gholizade , Wlodek Zadrozny

Most representation learning algorithms for language and image processing are local, in that they identify features for a data point based on surrounding points. Yet in language processing, the correct meaning of a word often depends on its…

机器学习 · 计算机科学 2014-02-19 Anjan Nepal , Alexander Yates

While existing machine learning models have achieved great success for sentiment classification, they typically do not explicitly capture sentiment-oriented word interaction, which can lead to poor results for fine-grained analysis at the…

计算与语言 · 计算机科学 2018-01-19 Shuai Wang , Mianwei Zhou , Geli Fei , Yi Chang , Bing Liu

Due to the availability of references of research papers and the rich information contained in papers, various citation analysis approaches have been proposed to identify similar documents for scholar recommendation. Despite of the success…

信息检索 · 计算机科学 2017-03-21 Han Tian , Hankz Hankui Zhuo

There are two main approaches to the distributed representation of words: low-dimensional deep learning embeddings and high-dimensional distributional models, in which each dimension corresponds to a context word. In this paper, we combine…

计算与语言 · 计算机科学 2014-02-19 Irina Sergienya , Hinrich Schütze

Distributional semantic models learn vector representations of words through the contexts they occur in. Although the choice of context (which often takes the form of a sliding window) has a direct influence on the resulting embeddings, the…

计算与语言 · 计算机科学 2017-04-20 Pierre Lison , Andrey Kutuzov

Search behaviour is characterised using synonymy and polysemy as users often want to search information based on meaning. Semantic representation strategies represent a move towards richer associative connections that can adequately capture…

信息检索 · 计算机科学 2026-02-06 Niall McCarroll , Kevin Curran , Eugene McNamee , Angela Clist , Andrew Brammer

We propose two methods of learning vector representations of words and phrases that each combine sentence context with structural features extracted from dependency trees. Using several variations of neural network classifier, we show that…

计算与语言 · 计算机科学 2015-11-20 James Cross , Bing Xiang , Bowen Zhou

Geospatial analysis lacks methods like the word vector representations and pre-trained networks that significantly boost performance across a wide range of natural language and computer vision tasks. To fill this gap, we introduce Tile2Vec,…

计算机视觉与模式识别 · 计算机科学 2018-05-31 Neal Jean , Sherrie Wang , Anshul Samar , George Azzari , David Lobell , Stefano Ermon

We propose a new model for learning bilingual word representations from non-parallel document-aligned data. Following the recent advances in word representation learning, our model learns dense real-valued word vectors, that is, bilingual…

计算与语言 · 计算机科学 2016-03-01 Ivan Vulić , Marie-Francine Moens

In this paper we propose a general framework for learning distributed representations of attributes: characteristics of text whose representations can be jointly learned with word embeddings. Attributes can correspond to document indicators…

机器学习 · 计算机科学 2014-06-12 Ryan Kiros , Richard S. Zemel , Ruslan Salakhutdinov

Since its introduction prediction by partial matching (PPM) has always been a de facto gold standard in lossless text compression, where many variants improving the compression ratio and speed have been proposed. However, reducing the high…

数据结构与算法 · 计算机科学 2012-11-13 M. Oguzhan Kulekci

Topic modeling is used for discovering latent semantic structure, usually referred to as topics, in a large collection of documents. The most widely used methods are Latent Dirichlet Allocation and Probabilistic Latent Semantic Analysis.…

计算与语言 · 计算机科学 2020-08-24 Dimo Angelov

Vector-based word representations help countless Natural Language Processing (NLP) tasks capture the language's semantic and syntactic regularities. In this paper, we present the characteristics of existing word embedding approaches and…

计算与语言 · 计算机科学 2024-03-05 Obaidullah Zaland , Muhammad Abulaish , Mohd. Fazil

Distributed word embeddings have yielded state-of-the-art performance in many NLP tasks, mainly due to their success in capturing useful semantic information. These representations assign only a single vector to each word whereas a large…

机器学习 · 计算机科学 2020-02-04 Shobhit Jain , Sravan Babu Bodapati , Ramesh Nallapati , Anima Anandkumar