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Relation extraction (RE) consists in categorizing the relationship between entities in a sentence. A recent paradigm to develop relation extractors is Distant Supervision (DS), which allows the automatic creation of new datasets by taking…

Computation and Language · Computer Science 2020-10-20 Johny Moreira , Chaina Oliveira , David Macêdo , Cleber Zanchettin , Luciano Barbosa

Real-world time series are influenced by numerous factors and exhibit complex non-stationary characteristics. Non-stationarity can lead to distribution shifts, where the statistical properties of time series change over time, negatively…

Machine Learning · Computer Science 2025-10-13 Zipo Jibao , Yingyi Fu , Xinyang Chen , Guoting Chen

Items popularity is a strong signal in recommendation algorithms. It strongly affects collaborative filtering approaches and it has been proven to be a very good baseline in terms of results accuracy. Even though we miss an actual…

Information Retrieval · Computer Science 2019-07-09 Vito Walter Anelli , Tommaso Di Noia , Eugenio Di Sciascio , Azzurra Ragone , Joseph Trotta

In sentiment classification, the enormous amount of textual data, its immense dimensionality, and inherent noise make it extremely difficult for machine learning classifiers to extract high-level and complex abstractions. In order to make…

Information Retrieval · Computer Science 2020-06-09 Aftab Anjum , Mazharul Islam , Lin Wang

Dynamic time warping (DTW) is an effective dissimilarity measure in many time series applications. Despite its popularity, it is prone to noises and outliers, which leads to singularity problem and bias in the measurement. The time…

Machine Learning · Computer Science 2022-08-04 Xiaomin Song , Qingsong Wen , Yan Li , Liang Sun

We propose a Long Short-Term Memory (LSTM) with attention mechanism to classify psychological stress from self-conducted interview transcriptions. We apply distant supervision by automatically labeling tweets based on their hashtag content,…

Computation and Language · Computer Science 2018-10-11 Genta Indra Winata , Onno Pepijn Kampman , Pascale Fung

Reviewing plays an important role when learning knowledge. The knowledge acquisition at a certain time point may be strongly inspired with the help of previous experience. Thus the knowledge growing procedure should show strong relationship…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Dongwei Wang , Zhi Han , Yanmei Wang , Xiai Chen , Baichen Liu , Yandong Tang

We propose a novel framework to classify large-scale time series data with long duration. Long time seriesclassification (L-TSC) is a challenging problem because the dataoften contains a large amount of irrelevant information to…

Artificial Intelligence · Computer Science 2021-11-23 Yuansheng Zhu , Weishi Shi , Deep Shankar Pandey , Yang Liu , Xiaofan Que , Daniel E. Krutz , Qi Yu

This paper is a contribution towards interpretability of the deep learning models in different applications of time-series. We propose a temporal attention layer that is capable of selecting the relevant information to perform various…

Computer Vision and Pattern Recognition · Computer Science 2018-06-25 Phongtharin Vinayavekhin , Subhajit Chaudhury , Asim Munawar , Don Joven Agravante , Giovanni De Magistris , Daiki Kimura , Ryuki Tachibana

Video large language models have achieved remarkable performance in tasks such as video question answering, however, their temporal understanding remains suboptimal. To address this limitation, we curate a dedicated instruction fine-tuning…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Yunxiao Wang , Meng Liu , Wenqi Liu , Xuemeng Song , Bin Wen , Fan Yang , Tingting Gao , Di Zhang , Guorui Zhou , Liqiang Nie

For the advancements of time series classification, scrutinizing previous studies, most existing methods adopt a common learning-to-classify paradigm - a time series classifier model tries to learn the relation between sequence inputs and…

Machine Learning · Computer Science 2024-03-20 Mingyue Cheng , Yiheng Chen , Qi Liu , Zhiding Liu , Yucong Luo

Relation extraction is an important task in structuring content of text data, and becomes especially challenging when learning with weak supervision---where only a limited number of labeled sentences are given and a large number of…

Computation and Language · Computer Science 2019-02-26 Hongtao Lin , Jun Yan , Meng Qu , Xiang Ren

Noisy labels are ubiquitous in real-world datasets, especially in the large-scale ones derived from crowdsourcing and web searching. It is challenging to train deep neural networks with noisy datasets since the networks are prone to…

Computer Vision and Pattern Recognition · Computer Science 2024-06-26 Yangdi Lu , Wenbo He

Distant supervision for relation extraction provides uniform bag labels for each sentence inside the bag, while accurate sentence labels are important for downstream applications that need the exact relation type. Directly using bag labels…

Computation and Language · Computer Science 2021-06-23 Ruotian Ma , Tao Gui , Linyang Li , Qi Zhang , Yaqian Zhou , Xuanjing Huang

Recently, prompt-tuning has achieved promising results for specific few-shot classification tasks. The core idea of prompt-tuning is to insert text pieces (i.e., templates) into the input and transform a classification task into a masked…

Computation and Language · Computer Science 2023-09-19 Xiang Chen , Ningyu Zhang , Xin Xie , Shumin Deng , Yunzhi Yao , Chuanqi Tan , Fei Huang , Luo Si , Huajun Chen

Sentiment classification (SC) often suffers from low-resource challenges such as domain-specific contexts, imbalanced label distributions, and few-shot scenarios. The potential of the diffusion language model (LM) for textual data…

Computation and Language · Computer Science 2024-09-24 Zhuowei Chen , Lianxi Wang , Yuben Wu , Xinfeng Liao , Yujia Tian , Junyang Zhong

Modern NLP systems require high-quality annotated data. In specialized domains, expert annotations may be prohibitively expensive. An alternative is to rely on crowdsourcing to reduce costs at the risk of introducing noise. In this paper we…

Computation and Language · Computer Science 2019-05-21 Yinfei Yang , Oshin Agarwal , Chris Tar , Byron C. Wallace , Ani Nenkova

Deep learning for Information Retrieval (IR) requires a large amount of high-quality query-document relevance labels, but such labels are inherently sparse. Label smoothing redistributes some observed probability mass over unobserved…

Information Retrieval · Computer Science 2022-05-10 Jihyuk Kim , Minsoo Kim , Seung-won Hwang

Text Mining is a field that aims at extracting information from textual data. One of the challenges of such field of study comes from the pre-processing stage in which a vector (and structured) representation should be extracted from…

Information Retrieval · Computer Science 2018-01-16 Charles Henrique Porto Ferreira , Debora Maria Rossi de Medeiros , Fabricio Olivetti de França

Cross-document coreference, the problem of resolving entity mentions across multi-document collections, is crucial to automated knowledge base construction and data mining tasks. However, the scarcity of large labeled data sets has hindered…

Artificial Intelligence · Computer Science 2015-03-17 Sameer Singh , Michael Wick , Andrew McCallum
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