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The increasing demand for personalized interactions with large language models (LLMs) calls for methodologies capable of accurately and efficiently identifying user opinions and preferences. Retrieval augmentation emerges as an effective…

Computation and Language · Computer Science 2025-02-04 Chenkai Sun , Ke Yang , Revanth Gangi Reddy , Yi R. Fung , Hou Pong Chan , Kevin Small , ChengXiang Zhai , Heng Ji

In speech emotion recognition (SER), using predefined features without considering their practical importance may lead to high dimensional datasets, including redundant and irrelevant information. Consequently, high-dimensional learning…

Sound · Computer Science 2024-06-07 Alaa Nfissi , Wassim Bouachir , Nizar Bouguila , Brian Mishara

In this paper, we study the problem of balancing effectiveness and efficiency in automated feature selection. Feature selection is a fundamental intelligence for machine learning and predictive analysis. After exploring many feature…

Machine Learning · Computer Science 2020-09-17 Wei Fan , Kunpeng Liu , Hao Liu , Pengyang Wang , Yong Ge , Yanjie Fu

Current advances in recommender systems have been remarkably successful in optimizing immediate engagement. However, long-term user engagement, a more desirable performance metric, remains difficult to improve. Meanwhile, recent…

Information Retrieval · Computer Science 2023-06-05 Wanqi Xue , Qingpeng Cai , Zhenghai Xue , Shuo Sun , Shuchang Liu , Dong Zheng , Peng Jiang , Kun Gai , Bo An

A mixed sample data augmentation strategy is proposed to enhance the performance of models on audio scene classification, sound event classification, and speech enhancement tasks. While there have been several augmentation methods shown to…

Sound · Computer Science 2021-08-09 Gwantae Kim , David K. Han , Hanseok Ko

Sequential recommendation is an extensively explored approach to capturing users' evolving preferences based on past interactions, aimed at predicting their next likely choice. Despite significant advancements in this domain, including…

Information Retrieval · Computer Science 2025-04-15 Kowei Shih , Yi Han , Li Tan

Efficient search operations in databases are paramount for timely retrieval of information various applications. This research introduces a novel approach, combining dynamicalgorithm1 selection and caching2 strategies, to optimize search…

Databases · Computer Science 2023-11-15 Hakikat Singh

Recent advancements in Graphical User Interface (GUI) agents have predominantly focused on training paradigms like supervised fine-tuning (SFT) and reinforcement learning (RL). However, the challenge of high-dynamic GUI environments remains…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Enqi Liu , Liyuan Pan , Zhi Gao , Yan Yang , Chenrui Shi , Yang Liu , Jingrong Wu , Qing Li

We investigate the effect of using human demonstration data in the replay buffer for Deep Reinforcement Learning. We use a policy gradient method with a modified experience replay buffer where a human demonstration experience is sampled…

Artificial Intelligence · Computer Science 2021-07-15 Dylan Klein , Akansel Cosgun

Rapid advancements in the E-commerce sector over the last few decades have led to an imminent need for personalised, efficient and dynamic recommendation systems. To sufficiently cater to this need, we propose a novel method for generating…

Information Retrieval · Computer Science 2020-12-07 Anubha Kabra , Anu Agarwal , Anil Singh Parihar

Interpolation-based Data Augmentation (DA) methods (Mixup) linearly interpolate the inputs and labels of two or more training examples. Mixup has more recently been adapted to the field of Natural Language Processing (NLP), mainly for…

Computation and Language · Computer Science 2023-11-17 Yuxin Pei , Pushkar Bhuse , Zhengzhong Liu , Eric Xing

In modern sequential decision-making systems, the construction of an optimal candidate action space is critical to efficient inference. However, existing approaches either rely on manually defined action spaces that lack scalability or…

Machine Learning · Computer Science 2025-11-12 Xueliang Zhao , Wei Wu , Jian Guan , Qintong Li , Lingpeng Kong

Dynamic feature selection (DFS) is a machine learning framework in which features are acquired sequentially for individual samples under budget constraints. The exponential growth in the number of possible feature acquisition paths forces a…

Machine Learning · Computer Science 2026-05-13 Javier Fumanal-Idocin , Raquel Fernandez-Peralta , Javier Andreu-Perez

We develop an online learning algorithm that dramatically improves the data efficiency of reinforcement learning from human feedback (RLHF). Our algorithm incrementally updates reward and language models as choice data is received. The…

We address the following problem: How do we incorporate user item interaction signals as part of the relevance model in a large-scale personalized recommendation system such that, (1) the ability to interpret the model and explain…

Social and Information Networks · Computer Science 2017-06-14 Jian Wang , Krishnaram Kenthapadi , Kaushik Rangadurai , David Hardtke

With the rapid development of the internet and the explosion of information, providing users with accurate personalized recommendations has become an important research topic. This paper designs and analyzes a personalized recommendation…

Information Retrieval · Computer Science 2024-10-15 Chunyan Mao , Shuaishuai Huang , Mingxiu Sui , Haowei Yang , Xueshe Wang

Recommender systems trained in a continuous learning fashion are plagued by the feedback loop problem, also known as algorithmic bias. This causes a newly trained model to act greedily and favor items that have already been engaged by…

Machine Learning · Computer Science 2020-08-04 Dalin Guo , Sofia Ira Ktena , Ferenc Huszar , Pranay Kumar Myana , Wenzhe Shi , Alykhan Tejani

With the continuous development of machine learning technology, major e-commerce platforms have launched recommendation systems based on it to serve a large number of customers with different needs more efficiently. Compared with…

Machine Learning · Computer Science 2020-12-14 Yang Yu , Zhenhao Gu , Rong Tao , Jingtian Ge , Kenglun Chang

Deep reinforcement learning (DRL) has been proven its efficiency in capturing users' dynamic interests in recent literature. However, training a DRL agent is challenging, because of the sparse environment in recommender systems (RS), DRL…

Information Retrieval · Computer Science 2022-09-20 Xiaocong Chen , Siyu Wang , Lina Yao , Lianyong Qi , Yong Li

Unsupervised feature extraction algorithms form one of the most important building blocks in machine learning systems. These algorithms are often adapted to the event-based domain to perform online learning in neuromorphic hardware.…

Neural and Evolutionary Computing · Computer Science 2019-07-31 Saeed Afshar , Ying Xu , Jonathan Tapson , André van Schaik , Gregory Cohen