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This paper compares recurrent neural networks (RNNs) with different types of gated cells for forecasting time series with multiple seasonality. The cells we compare include classical long short term memory (LSTM), gated recurrent unit…

机器学习 · 计算机科学 2022-03-18 Grzegorz Dudek , Slawek Smyl , Paweł Pełka

Combining the classical Kalman filter (KF) with a deep neural network (DNN) enables tracking in partially known state space (SS) models. A major limitation of current DNN-aided designs stems from the need to train them to filter data…

信号处理 · 电气工程与系统科学 2024-01-10 Xiaoyong Ni , Guy Revach , Nir Shlezinger

In continual learning, where task data arrives in a sequence, fine-tuning on later tasks will often lead to performance degradation on earlier tasks. This is especially pronounced when these tasks come from diverse domains. In this setting,…

机器学习 · 计算机科学 2025-01-13 Anat Kleiman , Gintare Karolina Dziugaite , Jonathan Frankle , Sham Kakade , Mansheej Paul

Current mainstream post-training quantization methods for large language models typically apply a uniform quantization strategy across all network layers, overlooking the substantial differences in algorithmic suitability among layers. To…

机器学习 · 计算机科学 2026-01-09 Jinhao Zhang , Yunquan Zhang , Daning Chen , JunSun , Zicheng Yan

Accurate learning of system dynamics is becoming increasingly crucial for advanced control and decision-making in engineering. However, real-world systems often exhibit multiple channels and highly nonlinear transition dynamics, challenging…

机器学习 · 统计学 2025-10-20 Tengjie Zheng , Jilan Mei , Di Wu , Lin Cheng , Shengping Gong

Large language models (LLMs) can memorize and reproduce training sequences verbatim -- a tendency that undermines both generalization and privacy. Existing mitigation methods apply interventions uniformly, degrading performance on the…

机器学习 · 计算机科学 2026-02-10 Xuanqi Zhang , Haoyang Shang , Xiaoxiao Li

Large Language Models (LLMs) encounter significant performance bottlenecks in long-sequence tasks due to the computational complexity and memory overhead inherent in the self-attention mechanism. To address these challenges, we introduce…

We propose a data-driven linear modeling framework for controlled nonlinear hereditary systems that combines Koopman lifting with a truncated Grunwald-Letnikov memory term. The key idea is to model nonlinear state dependence through a…

系统与控制 · 电气工程与系统科学 2026-03-18 Navid Mojahed , Mahdis Rabbani , Shima Nazari

Memory-augmentation is a powerful approach for efficiently incorporating external information into language models, but leads to reduced performance relative to retrieving text. Recent work introduced LUMEN, a memory-retrieval hybrid that…

计算与语言 · 计算机科学 2023-06-21 Michiel de Jong , Yury Zemlyanskiy , Nicholas FitzGerald , Sumit Sanghai , William W. Cohen , Joshua Ainslie

We introduce a novel nonlinear Kalman filter that utilizes reparametrization gradients. The widely used parametric approximation is based on a jointly Gaussian assumption of the state-space model, which is in turn equivalent to minimizing…

机器学习 · 计算机科学 2023-03-09 San Gultekin , Brendan Kitts , Aaron Flores , John Paisley

Deep learning at scale is dominated by communication time. Distributing samples across nodes usually yields the best performance, but poses scaling challenges due to global information dissemination and load imbalance across uneven sample…

分布式、并行与集群计算 · 计算机科学 2025-08-22 Shigang Li , Tal Ben-Nun , Giorgi Nadiradze , Salvatore Di Girolamo , Nikoli Dryden , Dan Alistarh , Torsten Hoefler

Reward sparsity in long-horizon reinforcement learning (RL) tasks remains a significant challenge, while existing outcome-based reward shaping struggles to define meaningful immediate rewards without introducing bias or requiring explicit…

机器学习 · 计算机科学 2025-08-15 Zetian Sun , Dongfang Li , Zhuoen Chen , Yuhuai Qin , Baotian Hu

Ensuring factual accuracy while maintaining the creative capabilities of Large Language Model Agents (LMAs) poses significant challenges in the development of intelligent agent systems. LMAs face prevalent issues such as information…

人工智能 · 计算机科学 2024-05-21 Diego Sanmartin

Transformers and deep state space models (SSMs) sit at opposite ends of a basic design choice: attention routes each query through a growing key-value (KV) cache by content-based matching at quadratic cost, while deep SSMs compress context…

Recent selective state space models (SSMs), such as Mamba and Mamba-2, have demonstrated strong performance in sequence modeling owing to input-dependent selection mechanisms. However, these mechanisms lack theoretical grounding and cannot…

机器学习 · 计算机科学 2025-12-19 Lei Wang , Xin Tan , Mingwei Wang , Ying Zhang

We investigate time-dependent data analysis from the perspective of recurrent kernel machines, from which models with hidden units and gated memory cells arise naturally. By considering dynamic gating of the memory cell, a model closely…

机器学习 · 统计学 2019-10-11 Kevin J Liang , Guoyin Wang , Yitong Li , Ricardo Henao , Lawrence Carin

Balancing fine-grained local modeling with long-range dependency capture under computational constraints remains a central challenge in sequence modeling. While Transformers provide strong token mixing, they suffer from quadratic…

机器学习 · 计算机科学 2026-03-20 Youjin Wang , Jiaqiao Zhao , Rong Fu , Run Zhou , Ruizhe Zhang , Jiani Liang , Suisuai Cao , Feng Zhou

Incorporating external knowledge in large language models (LLMs) enhances their utility across diverse applications, but existing methods have trade-offs. Retrieval-Augmented Generation (RAG) fetches evidence via similarity search, but key…

计算与语言 · 计算机科学 2025-03-10 Giulio Corallo , Orion Weller , Fabio Petroni , Paolo Papotti

Multi-modal fusion is crucial for Internet of Things (IoT) perception, widely deployed in smart homes, intelligent transport, industrial automation, and healthcare. However, existing systems often face challenges: high model complexity…

计算机视觉与模式识别 · 计算机科学 2025-07-21 Weiqi Yang , Xu Zhou , Jingfu Guan , Hao Du , Tianyu Bai

Deep neural networks are typically trained by optimizing a loss function with an SGD variant, in conjunction with a decaying learning rate, until convergence. We show that simple averaging of multiple points along the trajectory of SGD,…

机器学习 · 计算机科学 2019-02-26 Pavel Izmailov , Dmitrii Podoprikhin , Timur Garipov , Dmitry Vetrov , Andrew Gordon Wilson