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Numerous practical medical problems often involve data that possess a combination of both sparse and non-sparse structures. Traditional penalized regularizations techniques, primarily designed for promoting sparsity, are inadequate to…

Methodology · Statistics 2023-11-10 Shun Yu , Yuehan Yang

There is a renewed interest in polynomial regression in the form of identifying influential interactions between features. In many settings, this takes place in a high-dimensional model, making the number of interactions unwieldy or…

Methodology · Statistics 2020-02-19 Kory D. Johnson , Robert A. Stine , Dean P. Foster

Deep learning has achieved remarkable successes in solving challenging reinforcement learning (RL) problems when dense reward function is provided. However, in sparse reward environment it still often suffers from the need to carefully…

Machine Learning · Computer Science 2019-02-19 Hao Liu , Alexander Trott , Richard Socher , Caiming Xiong

Generative AI tools often answer questions using source documents, e.g., through retrieval augmented generation. Current groundedness and hallucination evaluations largely frame the relationship between an answer and its sources as binary…

Human-Computer Interaction · Computer Science 2026-04-10 Advait Sarkar , Christian Poelitz , Viktor Kewenig

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…

Computation and Language · Computer Science 2018-01-19 Shuai Wang , Mianwei Zhou , Geli Fei , Yi Chang , Bing Liu

This paper focuses on a referring expression generation (REG) task in which the aim is to pick out an object in a complex visual scene. One common theoretical approach to this problem is to model the task as a two-agent cooperative scheme…

Computation and Language · Computer Science 2022-05-17 Hieu Le , Taufiq Daryanto , Fabian Zhafransyah , Derry Wijaya , Elizabeth Coppock , Sang Chin

The ability of capturing fine spectral discriminative information enables hyperspectral images (HSIs) to observe, detect and identify objects with subtle spectral discrepancy. However, the captured HSIs may not represent true distribution…

Image and Video Processing · Electrical Eng. & Systems 2022-05-19 Na Liu , Wei Li , Yinjian Wang , Rao Tao , Qian Du , Jocelyn Chanussot

In multi-label classification tasks, each problem instance is associated with multiple classes simultaneously. In such settings, the correlation between labels contains valuable information that can be used to obtain more accurate…

Machine Learning · Computer Science 2020-07-24 Shabnam Nazmi , Xuyang Yan , Abdollah Homaifar , Emily Doucette

Over the recent years, Reinforcement Learning combined with Deep Learning techniques has successfully proven to solve complex problems in various domains, including robotics, self-driving cars, and finance. In this paper, we are introducing…

Machine Learning · Computer Science 2023-09-19 Petr Bobák , Ladislav Čmolík , Martin Čadík

Decentralized data sources are prevalent in real-world applications, posing a formidable challenge for causal inference. These sources cannot be consolidated into a single entity owing to privacy constraints. The presence of dissimilar data…

Machine Learning · Computer Science 2024-05-31 Thanh Vinh Vo , Young lee , Tze-Yun Leong

Natural language inference (NLI), also known as Recognizing Textual Entailment (RTE), is an important aspect of natural language understanding. Most research now uses machine learning and deep learning to perform this task on specific…

Artificial Intelligence · Computer Science 2024-05-03 Xuyao Feng , Anthony Hunter

New conversation topics and functionalities are constantly being added to conversational AI agents like Amazon Alexa and Apple Siri. As data collection and annotation is not scalable and is often costly, only a handful of examples for the…

Computation and Language · Computer Science 2019-10-11 Varun Kumar , Hadrien Glaude , Cyprien de Lichy , William Campbell

Contextual biasing improves automatic speech recognition (ASR) by integrating external knowledge, such as user-specific phrases or entities, during decoding. In this work, we use an attention-based biasing decoder to produce scores for…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-29 Wanting Huang , Weiran Wang

Semantic role labeling is primarily used to identify predicates, arguments, and their semantic relationships. Due to the limitations of modeling methods and the conditions of pre-identified predicates, previous work has focused on the…

Computation and Language · Computer Science 2020-10-12 Zuchao Li , Hai Zhao , Rui Wang , Kevin Parnow

In intelligent transportation systems (ITS), traffic management departments rely on sensors, cameras, and GPS devices to collect real-time traffic data. Traffic speed data is often incomplete due to sensor failures, data transmission…

Machine Learning · Computer Science 2025-04-25 Jiawen Hou , Hao Wu

The clustering-based unsupervised relation discovery method has gradually become one of the important methods of open relation extraction (OpenRE). However, high-dimensional vectors can encode complex linguistic information which leads to…

Computation and Language · Computer Science 2021-09-16 Jun Zhao , Tao Gui , Qi Zhang , Yaqian Zhou

Domain adaptation has been widely explored by transferring the knowledge from a label-rich source domain to a related but unlabeled target domain. Most existing domain adaptation algorithms attend to adapting feature representations across…

Computer Vision and Pattern Recognition · Computer Science 2021-03-24 Shuang Li , Mixue Xie , Kaixiong Gong , Chi Harold Liu , Yulin Wang , Wei Li

Artificial Intelligence has been used to help human complete difficult tasks in complicated environments by providing optimized strategies for decision-making or replacing the manual labour. In environments including multiple agents, such…

Machine Learning · Computer Science 2023-07-24 Chaoyi Gu , Varuna De Silva , Corentin Artaud , Rafael Pina

Existing approaches to constructing training data for Natural Language Inference (NLI) tasks, such as for semi-structured table reasoning, are either via crowdsourcing or fully automatic methods. However, the former is expensive and…

Computation and Language · Computer Science 2022-10-25 Dibyakanti Kumar , Vivek Gupta , Soumya Sharma , Shuo Zhang

The difficulty of identifying the physical model of complex systems has led to exploring methods that do not rely on such complex modeling of the systems. Deep reinforcement learning has been the pioneer for solving this problem without the…

Artificial Intelligence · Computer Science 2023-10-31 Ammar N. Abbas , Georgios C. Chasparis , John D. Kelleher