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We provide a general construction of quantum generalized master equations with memory kernel leading to well defined, that is completely positive and trace preserving, time evolutions. The approach builds on an operator generalization of…

量子物理 · 物理学 2016-12-15 Bassano Vacchini

Machine learning methods often need a large amount of labeled training data. Since the training data is assumed to be the ground truth, outliers can severely degrade learned representations and performance of trained models. Here we apply…

机器学习 · 统计学 2019-12-24 Haleh Akrami , Anand A. Joshi , Jian Li , Sergul Aydore , Richard M. Leahy

We consider a living organism as an observer of the evolution of its environment recording sensory information about the state space X of the environment in real time. Sensory information is sampled and then processed on two levels. On the…

人工智能 · 计算机科学 2010-03-22 Dan Guralnik

A variational formulation is introduced for the Oseen equations written in terms of vor\-ti\-city and Bernoulli pressure. The velocity is fully decoupled using the momentum balance equation, and it is later recovered by a post-process. A…

数值分析 · 数学 2021-11-04 Veronica Anaya , David Mora , Amiya K. Pani , Ricardo Ruiz-Baier

Agent memory systems accumulate experience but currently lack a principled operational metric for memory quality governance -- deciding which memories to trust, suppress, or deprecate as the agent's task distribution shifts. Write-time…

人工智能 · 计算机科学 2026-04-15 Baris Simsek

We describe Elevator, a unifying polymorphic foundation for metaprogramming with memory management based on adjoint modalities. In this setting, we distinguish between multiple memory regions using modes where each mode has a specific set…

编程语言 · 计算机科学 2024-11-04 Junyoung Jang , Brigitte Pientka

The framework of document spanners abstracts the task of information extraction from text as a function that maps every document (a string) into a relation over the document's spans (intervals identified by their start and end indices). For…

数据库 · 计算机科学 2023-06-22 Johannes Doleschal , Benny Kimelfeld , Wim Martens , Liat Peterfreund

Training Memory-based transformers can require a large amount of memory and can be quite inefficient. We propose a novel two-phase training mechanism and a novel regularization technique to improve the training efficiency of memory-based…

机器学习 · 计算机科学 2023-11-15 Vishwajit Kumar Vishnu , C. Chandra Sekhar

We present two a posteriori error estimators for the virtual element method (VEM) based on global and local flux reconstruction in the spirit of [5]. The proposed error estimators are reliable and efficient for the $h$-, $p$-, and…

数值分析 · 数学 2025-03-14 F. Dassi , J. Gedicke , L. Mascotto

We study estimation and inference using data collected by reinforcement learning (RL) algorithms. These algorithms adaptively experiment by interacting with individual units over multiple stages, updating their strategies based on past…

机器学习 · 统计学 2025-10-06 Vasilis Syrgkanis , Ruohan Zhan

Via extensive Monte Carlo simulations along with systematic analyses of corrections to scaling, we estimate the order parameter critical exponent $\beta$ of absorbing phase transitions in systems with two symmetric absorbing states. The…

统计力学 · 物理学 2020-05-18 Su-Chan Park

While deep reinforcement learning has shown important empirical success, it tends to learn relatively slow due to slow propagation of rewards information and slow update of parametric neural networks. Non-parametric episodic memory, on the…

机器学习 · 计算机科学 2023-04-25 Zhao Yang , Thomas. M. Moerland , Mike Preuss , Aske Plaat

Value-based reinforcement-learning algorithms have shown strong results in games, robotics, and other real-world applications. Overestimation bias is a known threat to those algorithms and can sometimes lead to dramatic performance…

机器学习 · 计算机科学 2024-08-13 Martin Waltz , Ostap Okhrin

The concept of memory is of central importance for characterizing complex systems and phenomena. Presence of long-term memories indicates how their dynamics can be less sensitive to initial conditions compared to the chaotic cases. On the…

地球物理 · 物理学 2023-07-11 Sumiyoshi Abe , Norikazu Suzuki

Building up on classical linear formulations, we posit that a broad class of problems in signal synthesis and in signal recovery are reducible to the basic task of finding a point in a closed convex subset of a Hilbert space that satisfies…

最优化与控制 · 数学 2021-05-18 Patrick L. Combettes , Zev C. Woodstock

Motivated by recent progress on symmetry breaking problems such as maximal independent set (MIS) and maximal matching in the low-memory Massively Parallel Computation (MPC) model (e.g., Behnezhad et al.~PODC 2019; Ghaffari-Uitto SODA 2019),…

分布式、并行与集群计算 · 计算机科学 2020-09-29 Kishore Kothapalli , Shreyas Pai , Sriram V. Pemmaraju

Quantization has significantly improved the compute and memory efficiency of Large Language Model (LLM) training. However, existing approaches still rely on accumulating their updates in high-precision: concretely, gradient updates must be…

计算与语言 · 计算机科学 2026-01-30 Mahdi Nikdan , Amir Zandieh , Dan Alistarh , Vahab Mirrokni

We propose a randomized multiplicative weight update (MWU) algorithm for $\ell_{\infty}$ regression that runs in $\widetilde{O}\left(n^{2+1/22.5} \text{poly}(1/\epsilon)\right)$ time when $\omega = 2+o(1)$, improving upon the previous best…

数据结构与算法 · 计算机科学 2025-04-29 Deeksha Adil , Shunhua Jiang , Rasmus Kyng

Modern multivariate time series forecasting primarily relies on two architectures: the Transformer with attention mechanism and Mamba. In natural language processing, an approach has been used that combines local window attention for…

机器学习 · 计算机科学 2025-09-26 Itay Katav , Aryeh Kontorovich

We study learning under regime variation, where the learner, its memory state, and the evaluative conditions may evolve over time. This paper is a foundational and structural contribution: its goal is to define the core learning-theoretic…

机器学习 · 计算机科学 2026-03-25 Aomar Osmani