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While session-based recommender systems (SBRSs) have shown superior recommendation performance, multi-task learning (MTL) has been adopted by SBRSs to enhance their prediction accuracy and generalizability further. Hierarchical MTL (H-MTL)…

Information Retrieval · Computer Science 2023-09-14 Sejoon Oh , Walid Shalaby , Amir Afsharinejad , Xiquan Cui

Reinforcement learning (RL) solves sequential decision-making problems via a trial-and-error process interacting with the environment. While RL achieves outstanding success in playing complex video games that allow huge trial-and-error,…

Machine Learning · Computer Science 2022-06-22 Fan-Ming Luo , Tian Xu , Hang Lai , Xiong-Hui Chen , Weinan Zhang , Yang Yu

Related video recommendations commonly use collaborative filtering (CF) driven by co-engagement signals, often resulting in recommendations lacking semantic coherence and exhibiting strong popularity bias. This paper introduces a novel…

Information Retrieval · Computer Science 2025-07-15 Amit Jaspal , Feng Zhang , Wei Chang , Sumit Kumar , Yubo Wang , Roni Mittleman , Qifan Wang , Weize Mao

Multi-Task Learning (MTL) is widely-accepted in Natural Language Processing as a standard technique for learning multiple related tasks in one model. Training an MTL model requires having the training data for all tasks available at the…

Computation and Language · Computer Science 2023-02-23 Sudipta Kar , Giuseppe Castellucci , Simone Filice , Shervin Malmasi , Oleg Rokhlenko

Recent advancements in reinforcement learning (RL) for large language models (LLMs), exemplified by DeepSeek R1, have shown that even a simple question-answering task can substantially improve an LLM's reasoning capabilities. In this work,…

Computation and Language · Computer Science 2025-03-10 Stephen Chung , Wenyu Du , Jie Fu

Reinforcement learning (RL) is an innovative approach to financial decision making, offering specialized solutions to complex investment problems where traditional methods fail. This review analyzes 167 articles from 2017--2025, focusing on…

Computational Finance · Quantitative Finance 2025-12-12 Mohammad Rezoanul Hoque , Md Meftahul Ferdaus , M. Kabir Hassan

This paper introduces a novel reinforcement learning (RL) approach to scheduling mixed-criticality (MC) systems on processors with varying speeds. Building upon the foundation laid by [1], we extend their work to address the non-preemptive…

Machine Learning · Computer Science 2025-04-09 Muhammad El-Mahdy , Nourhan Sakr , Rodrigo Carrasco

Contextual Reinforcement Learning (CRL) tackles the problem of solving a set of related Contextual Markov Decision Processes (CMDPs) that vary across different context variables. Traditional approaches--independent training and multi-task…

Machine Learning · Computer Science 2026-03-31 Tianyue Zhou , Jung-Hoon Cho , Cathy Wu

Representation-based multi-task learning (MTL) improves efficiency by learning a shared structure across tasks, but its practical application is often hindered by contamination, outliers, or adversarial tasks. Most existing methods and…

Machine Learning · Statistics 2025-09-09 Yian Huang , Yang Feng , Zhiliang Ying

This paper describes a purely data-driven solution to a class of sequential decision-making problems with a large number of concurrent online decisions, with applications to computing systems and operations research. We assume that while…

Artificial Intelligence · Computer Science 2019-10-02 Hardik Meisheri , Vinita Baniwal , Nazneen N Sultana , Balaraman Ravindran , Harshad Khadilkar

In multi-task learning (MTL), we improve the performance of key machine learning algorithms by training various tasks jointly. When the number of tasks is large, modeling task structure can further refine the task relationship model. For…

Machine Learning · Computer Science 2020-11-25 Xiangyu Niu , Yifan Sun , Jinyuan Sun

Multi-Task Learning (MTL) networks have emerged as a promising method for transferring learned knowledge across different tasks. However, MTL must deal with challenges such as: overfitting to low resource tasks, catastrophic forgetting, and…

Machine Learning · Computer Science 2022-04-22 Jonathan Pilault , Amine Elhattami , Christopher Pal

General-purpose control demands agents that act across many tasks and embodiments, yet research on reinforcement learning (RL) for continuous control remains dominated by single-task or offline regimes, reinforcing a view that online RL…

Machine Learning · Computer Science 2025-12-03 Nicklas Hansen , Hao Su , Xiaolong Wang

Reinforcement Learning (RL) based methods have been increasingly explored for robot learning. However, RL based methods often suffer from low sampling efficiency in the exploration phase, especially for long-horizon manipulation tasks, and…

Robotics · Computer Science 2024-12-31 Hao Zhang , Hao Wang , Xiucai Huang , Wenrui Chen , Zhen Kan

In the landscape of Recommender System (RS) applications, reinforcement learning (RL) has recently emerged as a powerful tool, primarily due to its proficiency in optimizing long-term rewards. Nevertheless, it suffers from instability in…

Information Retrieval · Computer Science 2024-06-11 Ziru Liu , Shuchang Liu , Zijian Zhang , Qingpeng Cai , Xiangyu Zhao , Kesen Zhao , Lantao Hu , Peng Jiang , Kun Gai

By augmenting Large Language Models (LLMs) with external tools, their capacity to solve complex problems has been significantly enhanced. However, despite ongoing advancements in the parsing capabilities of LLMs, incorporating all available…

Computation and Language · Computer Science 2025-11-24 Hang Gao , Yongfeng Zhang

Conversational recommender systems (CRS) dynamically obtain the user preferences via multi-turn questions and answers. The existing CRS solutions are widely dominated by deep reinforcement learning algorithms. However, deep reinforcement…

Information Retrieval · Computer Science 2022-09-01 A S M Ahsan-Ul Haque , Hongning Wang

In recent years, large language models (LLMs) have played an important role in automatic speech recognition (ASR) and text-to-speech (TTS) systems. While reinforcement learning (RL) has significantly enhanced LLM performance in text-based…

Sound · Computer Science 2025-09-24 Changfeng Gao , Yabin Li , Keyu An , Zhifu Gao , Zhihao Du , Han Zhao , Xiangang Li

Continual learning (CL) enables the development of models and agents that learn from a sequence of tasks while addressing the limitations of standard deep learning approaches, such as catastrophic forgetting. In this work, we investigate…

Machine Learning · Computer Science 2023-05-19 Massimo Caccia , Jonas Mueller , Taesup Kim , Laurent Charlin , Rasool Fakoor

A broad use case of large language models (LLMs) is in goal-directed decision-making tasks (or "agent" tasks), where an LLM needs to not just generate completions for a given prompt, but rather make intelligent decisions over a multi-turn…

Machine Learning · Computer Science 2024-03-01 Yifei Zhou , Andrea Zanette , Jiayi Pan , Sergey Levine , Aviral Kumar