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With the advent of word embeddings, lexicons are no longer fully utilized for sentiment analysis although they still provide important features in the traditional setting. This paper introduces a novel approach to sentiment analysis that…

计算与语言 · 计算机科学 2017-08-24 Bonggun Shin , Timothy Lee , Jinho D. Choi

Learned vector representations of words are useful tools for many information retrieval and natural language processing tasks due to their ability to capture lexical semantics. However, while many such tasks involve or even rely on named…

计算与语言 · 计算机科学 2020-02-13 Satya Almasian , Andreas Spitz , Michael Gertz

Over the past decade, recommender systems have experienced a surge in popularity. Despite notable progress, they grapple with challenging issues, such as high data dimensionality and sparseness. Representing users and items as…

信息检索 · 计算机科学 2025-07-28 Pedro R. Pires , Tiago A. Almeida

Generic sentence embeddings provide a coarse-grained approximation of semantic textual similarity but ignore specific aspects that make texts similar. Conversely, aspect-based sentence embeddings provide similarities between texts based on…

计算与语言 · 计算机科学 2023-09-26 Tim Schopf , Emanuel Gerber , Malte Ostendorff , Florian Matthes

Recently, some studies have shown that text classification tasks are vulnerable to poisoning and evasion attacks. However, little work has investigated attacks against decision making algorithms that use text embeddings, and their output is…

计算与语言 · 计算机科学 2022-01-11 Anahita Samadi , Debapriya Banerjee , Shirin Nilizadeh

The pervasive use of distributional semantic models or word embeddings in a variety of research fields is due to their remarkable ability to represent the meanings of words for both practical application and cognitive modeling. However,…

计算与语言 · 计算机科学 2018-02-07 Akira Utsumi

In comparison with document summarization on the articles from social media and newswire, argumentative zoning (AZ) is an important task in scientific paper analysis. Traditional methodology to carry on this task relies on feature…

计算与语言 · 计算机科学 2017-03-30 Haixia Liu

Word embeddings have demonstrated strong performance on NLP tasks. However, lack of interpretability and the unsupervised nature of word embeddings have limited their use within computational social science and digital humanities. We…

计算与语言 · 计算机科学 2019-09-05 Miriam Hurtado Bodell , Martin Arvidsson , Måns Magnusson

We develop a family of techniques to align word embeddings which are derived from different source datasets or created using different mechanisms (e.g., GloVe or word2vec). Our methods are simple and have a closed form to optimally rotate,…

计算与语言 · 计算机科学 2020-11-19 Sunipa Dev , Safia Hassan , Jeff M. Phillips

This research explores the use of Natural Language Processing (NLP) techniques to locate geological resources, with a specific focus on industrial minerals. By using word embeddings trained with the GloVe model, we extract semantic…

计算与语言 · 计算机科学 2025-04-11 Nanmanas Linphrachaya , Irving Gómez-Méndez , Adil Siripatana

Data representation is a fundamental task in machine learning. The representation of data affects the performance of the whole machine learning system. In a long history, the representation of data is done by feature engineering, and…

计算与语言 · 计算机科学 2016-11-21 Siwei Lai

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

Prediction without justification has limited utility. Much of the success of neural models can be attributed to their ability to learn rich, dense and expressive representations. While these representations capture the underlying complexity…

计算与语言 · 计算机科学 2017-11-27 Anant Subramanian , Danish Pruthi , Harsh Jhamtani , Taylor Berg-Kirkpatrick , Eduard Hovy

Conventional word embeddings represent words with fixed vectors, which are usually trained based on co-occurrence patterns among words. In doing so, however, the power of such representations is limited, where the same word might be…

计算与语言 · 计算机科学 2020-01-10 Hongming Zhang , Jiaxin Bai , Yan Song , Kun Xu , Changlong Yu , Yangqiu Song , Wilfred Ng , Dong Yu

This study addresses the challenges of multi-label text classification. The difficulties arise from imbalanced data sets, varied text lengths, and numerous subjective feature labels. Existing solutions include traditional machine learning…

计算与语言 · 计算机科学 2024-05-22 Hongren Wang

Sentence embedding tasks are important in natural language processing (NLP), but improving their performance while keeping them reliable is still hard. This paper presents a framework that combines pseudo-label generation and model ensemble…

计算与语言 · 计算机科学 2025-01-28 Ziwei Liu , Qi Zhang , Lifu Gao

Word embeddings are computed by a class of techniques within natural language processing (NLP), that create continuous vector representations of words in a language from a large text corpus. The stochastic nature of the training process of…

计算与语言 · 计算机科学 2020-08-03 Lucas Rettenmeier

In natural scenes and documents, we can find the correlation between a text and its color. For instance, the word, "hot", is often printed in red, while "cold" is often in blue. This correlation can be thought of as a feature that…

计算机视觉与模式识别 · 计算机科学 2020-04-22 Masaya Ikoma , Brian Kenji Iwana , Seiichi Uchida

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

With the current shift in the mass media landscape from journalistic rigor to social media, personalized social media is becoming the new norm. Although the digitalization progress of the media brings many advantages, it also increases the…

计算与语言 · 计算机科学 2023-04-18 Ciprian-Octavian Truică , Elena-Simona Apostol