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Modeling episodic memory (EM) remains a significant challenge in both neuroscience and AI, with existing models either lacking interpretability or struggling with practical applications. This paper proposes the Vision-Language Episodic…

Neurons and Cognition · Quantitative Biology 2025-05-09 Chong Li , Taiping Zeng , Xiangyang Xue , Jianfeng Feng

We propose a novel method called Long Expressive Memory (LEM) for learning long-term sequential dependencies. LEM is gradient-based, it can efficiently process sequential tasks with very long-term dependencies, and it is sufficiently…

Machine Learning · Computer Science 2022-02-28 T. Konstantin Rusch , Siddhartha Mishra , N. Benjamin Erichson , Michael W. Mahoney

Episodic self-imitation learning, a novel self-imitation algorithm with a trajectory selection module and an adaptive loss function, is proposed to speed up reinforcement learning. Compared to the original self-imitation learning algorithm,…

Artificial Intelligence · Computer Science 2020-11-30 Tianhong Dai , Hengyan Liu , Anil Anthony Bharath

Despite recent progress in time-series foundation models, challenges persist in improving representation learning and adapting to diverse downstream tasks. We introduce a General Time-series Model (GTM), which advances representation…

Machine Learning · Computer Science 2026-03-13 Cheng He , Xu Huang , Gangwei Jiang , Zhaoyi Li , Defu Lian , Hong Xie , Enhong Chen , Xijie Liang , Zengrong Zheng , Patrick P. C. Lee

Current generation of memory-augmented neural networks has limited scalability as they cannot efficiently process data that are too large to fit in the external memory storage. One example of this is lifelong learning scenario where the…

Machine Learning · Computer Science 2018-12-12 Hyunwoo Jung , Moonsu Han , Minki Kang , Sungju Hwang

This paper presents a novel framework for automatic learning of complex strategies in human decision making. The task that we are interested in is to better facilitate long term planning for complex, multi-step events. We observe temporal…

Computer Vision and Pattern Recognition · Computer Science 2018-05-15 Tharindu Fernando , Simon Denman , Sridha Sridharan , Clinton Fookes

The Expectation-Maximization (EM) algorithm is one of the most popular methods used to solve the problem of parametric distribution-based clustering in unsupervised learning. In this paper, we propose to analyze a generalized EM (GEM)…

Optimization and Control · Mathematics 2021-05-19 Sarthak Chatterjee , Orlando Romero , Sérgio Pequito

Efficient exploration in deep cooperative multi-agent reinforcement learning (MARL) still remains challenging in complex coordination problems. In this paper, we introduce a novel Episodic Multi-agent reinforcement learning with…

Machine Learning · Computer Science 2021-11-23 Lulu Zheng , Jiarui Chen , Jianhao Wang , Jiamin He , Yujing Hu , Yingfeng Chen , Changjie Fan , Yang Gao , Chongjie Zhang

Neuromorphic devices, with their distinct advantages in energy efficiency and parallel processing, are pivotal in advancing artificial intelligence applications. Among these devices, memristive transistors have attracted significant…

Applied Physics · Physics 2024-11-08 Shengbo Wang , Jingfang Pei , Cong Li , Xuemeng Li , Li Tao , Arokia Nathan , Guohua Hu , Shuo Gao

It is well known that ensemble methods often provide enhanced performance in reinforcement learning. In this paper, we explore this concept further by using group-aided training within the distributional reinforcement learning paradigm.…

Machine Learning · Computer Science 2020-05-25 Björn Lindenberg , Jonas Nordqvist , Karl-Olof Lindahl

To sustain coherent long-term interactions, Large Language Model (LLM) agents must navigate the tension between acquiring new information and retaining prior knowledge. Current unified stream-based memory systems facilitate context updates…

Artificial Intelligence · Computer Science 2026-04-15 Zhaofen Wu , Hanrong Zhang , Fulin Lin , Wujiang Xu , Xinran Xu , Yankai Chen , Henry Peng Zou , Shaowen Chen , Weizhi Zhang , Xue Liu , Philip S. Yu , Hongwei Wang

Prioritized Experience Replay (PER) is a deep reinforcement learning technique in which agents learn from transitions sampled with non-uniform probability proportionate to their temporal-difference error. We show that any loss function…

Machine Learning · Computer Science 2020-10-23 Scott Fujimoto , David Meger , Doina Precup

Clinical decision-making agents can benefit from reusing prior decision experience. However, many memory-augmented methods store experiences as independent records without explicit relational structure, which may introduce noisy retrieval,…

Artificial Intelligence · Computer Science 2026-03-24 Xiao Han , Yuzheng Fan , Sendong Zhao , Haochun Wang , Bing Qin

Inspired by the cognitive science theory of the explicit human memory systems, we have modeled an agent with short-term, episodic, and semantic memory systems, each of which is modeled with a knowledge graph. To evaluate this system and…

Artificial Intelligence · Computer Science 2026-05-19 Taewoon Kim , Michael Cochez , Vincent François-Lavet , Mark Neerincx , Piek Vossen

Storing knowledge of an agent's environment in the form of a probabilistic generative model has been established as a crucial ingredient in a multitude of cognitive tasks. Perception has been formalised as probabilistic inference over the…

Neurons and Cognition · Quantitative Biology 2018-06-22 David G. Nagy , Balázs Török , Gergő Orbán

The continual learning capability of large language models (LLMs) is crucial for advancing artificial general intelligence. However, continual fine-tuning LLMs across various domains often suffers from catastrophic forgetting, characterized…

Computation and Language · Computer Science 2025-08-07 Yunan Zhang , Shuoran Jiang , Mengchen Zhao , Yuefeng Li , Yang Fan , Xiangping Wu , Qingcai Chen

This paper presents a novel neural network training approach for faster convergence and better generalization abilities in deep reinforcement learning. Particularly, we focus on the enhancement of training and evaluation performance in…

Machine Learning · Computer Science 2020-05-26 Mohammed Sharafath Abdul Hameed , Gavneet Singh Chadha , Andreas Schwung , Steven X. Ding

Both the human brain and artificial learning agents operating in real-world or comparably complex environments are faced with the challenge of online model selection. In principle this challenge can be overcome: hierarchical Bayesian…

Machine Learning · Computer Science 2017-12-05 David G. Nagy , Gergő Orbán

Factorization machine (FM) is an effective model for feature-based recommendation which utilizes inner product to capture second-order feature interactions. However, one of the major drawbacks of FM is that it couldn't capture complex…

Machine Learning · Computer Science 2024-04-03 Enneng Yang , Xin Xin , Li Shen , Guibing Guo

Deep Deterministic Policy Gradient (DDPG) has been proved to be a successful reinforcement learning (RL) algorithm for continuous control tasks. However, DDPG still suffers from data insufficiency and training inefficiency, especially in…

Machine Learning · Computer Science 2019-03-05 Zhizheng Zhang , Jiale Chen , Zhibo Chen , Weiping Li