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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

Reinforcement Learning (RL) has achieved tremendous development in recent years, but still faces significant obstacles in addressing complex real-life problems due to the issues of poor system generalization, low sample efficiency as well…

Artificial Intelligence · Computer Science 2025-02-25 Chao Yu , Shicheng Ye , Hankz Hankui Zhuo

Reinforcement learning (RL) in recommendation systems offers the potential to optimize recommendations for long-term user engagement. However, the environment often involves large state and action spaces, which makes it hard to efficiently…

Information Retrieval · Computer Science 2023-09-20 Yijia Dai , Wen Sun

Reinforcement learning (RL) has experienced a second wind in the past decade. While incredibly successful in images and videos, these systems still operate within the realm of propositional tasks ignoring the inherent structure that exists…

Machine Learning · Computer Science 2025-10-21 Fateme Golivand Darvishvand , Hikaru Shindo , Sahil Sidheekh , Kristian Kersting , Sriraam Natarajan

Recent recommender systems increasingly leverage embeddings from large pre-trained language models (PLMs). However, such embeddings exhibit two key limitations: (1) PLMs are not explicitly optimized to produce structured and discriminative…

Computation and Language · Computer Science 2026-01-19 Guy Hadad , Neomi Rabaev , Bracha Shapira

Reinforcement learning (RL) faces challenges in evaluating policy trajectories within intricate game tasks due to the difficulty in designing comprehensive and precise reward functions. This inherent difficulty curtails the broader…

Artificial Intelligence · Computer Science 2024-07-02 Zichao Shen , Tianchen Zhu , Qingyun Sun , Shiqi Gao , Jianxin Li

The wide development of mobile applications provides a considerable amount of data of all types (images, texts, sounds, videos, etc.). Thus, two main issues have to be considered: assist users in finding information and reduce search and…

Information Retrieval · Computer Science 2014-04-16 Djallel Bouneffouf

While current benchmark reinforcement learning (RL) tasks have been useful to drive progress in the field, they are in many ways poor substitutes for learning with real-world data. By testing increasingly complex RL algorithms on…

Machine Learning · Computer Science 2018-11-16 Amy Zhang , Yuxin Wu , Joelle Pineau

This paper introduces AutoREC, an open-source Python package for developing reinforcement learning (RL) agents to automatically generate equivalent circuit models (ECMs) from electrochemical impedance spectroscopy (EIS) data. While ECMs are…

Reinforcement Learning (RL) is being increasingly used to learn and adapt application behavior in many domains, including large-scale and safety critical systems, as for example, autonomous driving. With the advent of plug-n-play RL…

Software Engineering · Computer Science 2023-08-04 Nicolás Cardozo , Ivana Dusparic , Christian Cabrera

Meta reinforcement learning (RL) allows agents to leverage experience across a distribution of tasks on which the agent can train at will, enabling faster learning of optimal policies on new test tasks. Despite its success in improving…

Machine Learning · Computer Science 2026-05-27 Tingting Ni , Maryam Kamgarpour

Reasoning large language models (LLMs) excel in complex tasks, which has drawn significant attention to reinforcement learning (RL) for LLMs. However, existing approaches allocate an equal number of rollouts to all questions during the RL…

Machine Learning · Computer Science 2025-10-21 Mengqi Liao , Xiangyu Xi , Ruinian Chen , Jia Leng , Yangen Hu , Ke Zeng , Shuai Liu , Huaiyu Wan

Reciprocal recommender systems~(RRS), conducting bilateral recommendations between two involved parties, have gained increasing attention for enhancing matching efficiency. However, the majority of existing methods in the literature still…

Information Retrieval · Computer Science 2024-08-20 Chen Yang , Sunhao Dai , Yupeng Hou , Wayne Xin Zhao , Jun Xu , Yang Song , Hengshu Zhu

Cyber-Physical Systems (CPS) often leverage Reinforcement Learning (RL) techniques to adapt dynamically to changing environments and optimize performance. However, it is challenging to construct safety cases for RL components. We therefore…

Software Engineering · Computer Science 2025-03-13 Katherine Dearstyne , Pedro , Alarcon Granadeno , Theodore Chambers , Jane Cleland-Huang

Reinforcement learning (RL) has become an increasingly active area of research in recent years. Although there are many algorithms that allow an agent to solve tasks efficiently, they often ignore the possibility that prior experience…

Artificial Intelligence · Computer Science 2020-01-07 Francisco M. Garcia , Chris Nota , Philip S. Thomas

We introduce EncouRAGe, a comprehensive Python framework designed to streamline the development and evaluation of Retrieval-Augmented Generation (RAG) systems using Large Language Models (LLMs) and Embedding Models. EncouRAGe comprises five…

Computation and Language · Computer Science 2025-11-10 Jan Strich , Adeline Scharfenberg , Chris Biemann , Martin Semmann

With the applications of recommendation systems rapidly expanding, an increasing number of studies have focused on every aspect of recommender systems with different data inputs, models, and task settings. Therefore, a flexible library is…

Information Retrieval · Computer Science 2024-05-29 Jiayu Li , Hanyu Li , Zhiyu He , Weizhi Ma , Peijie Sun , Min Zhang , Shaoping Ma

Session-based Recommendation (SR) systems have recently achieved considerable success, yet their complex, "black box" nature often obscures why certain recommendations are made. Existing explanation methods struggle to pinpoint truly…

Social and Information Networks · Computer Science 2025-12-02 Han Zhou , Hui Fang , Zhu Sun , Wentao Hu

Retrieval-augmented generation (RAG) systems rely on retrieval models for identifying relevant contexts and answer generation models for utilizing those contexts. However, retrievers exhibit imperfect recall and precision, limiting…

Computation and Language · Computer Science 2026-04-29 Jerry Huang , Siddarth Madala , Risham Sidhu , Cheng Niu , Hao Peng , Julia Hockenmaier , Tong Zhang

With large-scale integration of renewable generation and distributed energy resources, modern power systems are confronted with new operational challenges, such as growing complexity, increasing uncertainty, and aggravating volatility.…

Machine Learning · Computer Science 2022-02-28 Xin Chen , Guannan Qu , Yujie Tang , Steven Low , Na Li