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Contextuality is a central feature distinguishing quantum from classical probability theories, but its operational meaning is often stated only qualitatively. In this Letter, we study a simple information-theoretic question: how much…

量子物理 · 物理学 2026-04-08 Song-Ju Kim

Recently a new impulse has been given to the experimental investigation of contextuality. In this paper we show that for a widely used definition of contextuality there can be no decisive experiment on the existence of contextuality. To…

量子物理 · 物理学 2011-09-21 Ronnie Hermens

A two-state master equation based decision making model has been shown to generate phase transitions, to be topologically complex and to manifest temporal complexity through an inverse power-law probability distribution function in the…

适应与自组织系统 · 物理学 2015-06-22 Bruce J. West , Malgorzata Turalska , Paolo Grigolini

Decision making often exhibits context dependence that challenges classical probability theory. While quantum cognition has successfully modeled such phenomena, it remains unclear whether quantum probability is merely a convenient…

量子物理 · 物理学 2026-01-16 Song-Ju Kim

We study the contextuality of a three-level quantum system using classical conditional entropy of measurement outcomes. First, we analytically construct the minimal configuration of measurements required to reveal contextuality. Next, an…

量子物理 · 物理学 2013-05-30 Pawel Kurzynski , Ravishankar Ramanathan , Dagomir Kaszlikowski

Contextuality - the obstruction to describing quantum mechanics in a classical statistical way - has been proposed as a resource that powers quantum computing. The measurement-based model provides a concrete manifestation of contextuality…

量子物理 · 物理学 2018-10-12 Markus Frembs , Sam Roberts , Stephen D. Bartlett

I assess various proposals for the source of the intuition that there is something problematic about contextuality, ultimately concluding that contextuality is best thought of in terms of fine-tuning. I then argue that as with other…

量子物理 · 物理学 2021-11-24 Emily Adlam

As a phenomenon encompassing measurement incompatibility and Bell nonlocality, quantum contextuality is not only central to our understanding of quantum mechanics, but also an essential resource in many quantum information processing tasks.…

量子物理 · 物理学 2024-03-19 Xiao-Dong Yu , Isadora Veeren , Otfried Gühne

In this work we analyse the notion of measurement non-contextuality (MNC) and identify contextual scenarios which involve sequential measurements of only a single measurement device. We show that any non-contextual ontological model fails…

量子物理 · 物理学 2023-01-05 Jaskaran Singh , Rajendra Singh Bhati , Arvind

We study contextual chance-constrained programming under decision-dependent uncertainty. In this setting, a decision not only needs to satisfy constraints but also alters the distribution of uncertain outcomes. This dependency makes the…

最优化与控制 · 数学 2026-02-10 Xiangting Liu , Shengran Wang , Kaile Yan , Zhi-Hai Zhang

We propose a novel method for translation selection in statistical machine translation, in which a convolutional neural network is employed to judge the similarity between a phrase pair in two languages. The specifically designed…

计算与语言 · 计算机科学 2015-06-25 Zhaopeng Tu , Baotian Hu , Zhengdong Lu , Hang Li

Quantum contextuality is the key concept which explains the fact that the result of a measurement is not independent of the context in which it is found. It is observed to be an intrinsic feature, i.e., neither entanglement nor spatial…

量子物理 · 物理学 2023-02-23 Firat Diker , Zafer Gedik

Attribute weighting and differential weighting, two major mechanisms for computing context-dependent similarity or dissimilarity measures are studied and compared. A dissimilarity measure based on subset size in the context is proposed and…

人工智能 · 计算机科学 2013-04-05 Yizong Cheng

In this work we present a hierarchy of generalized contextuality. It refines the traditional binary distinction between contextual and noncontextual theories, and facilitates their comparison based on how contextual they are. Our approach…

量子物理 · 物理学 2026-04-22 Lorenzo Catani , Thomas D. Galley , Tomáš Gonda

Machine learning algorithms are designed to capture complex relationships between features. In this context, the high dimensionality of data often results in poor model performance, with the risk of overfitting. Feature selection, the…

机器学习 · 计算机科学 2023-10-18 Paolo Bonetti , Alberto Maria Metelli , Marcello Restelli

Focusing on Random Forests, we propose a multi-armed contextual bandit recommendation framework for feature-based selection of a single shallow tree of the learned ensemble. The trained system, which works on top of the Random Forest,…

机器学习 · 统计学 2022-07-14 Tommaso Aldinucci , Enrico Civitelli , Leonardo di Gangi , Alessandro Sestini

Existing models often leverage co-occurrences between objects and their context to improve recognition accuracy. However, strongly relying on context risks a model's generalizability, especially when typical co-occurrence patterns are…

计算机视觉与模式识别 · 计算机科学 2020-05-07 Krishna Kumar Singh , Dhruv Mahajan , Kristen Grauman , Yong Jae Lee , Matt Feiszli , Deepti Ghadiyaram

We introduce a contextual quantum system comprising mutually complementary observables organized into two or more collections of pseudocontexts with the same probability sums of outcomes. These pseudocontexts constitute non-orthogonal bases…

量子物理 · 物理学 2024-04-05 Mirko Navara , Karl Svozil

In this article, we review selective inference, a set of techniques for inference when the statistical question asked is a function of the data. This setting often arises in contemporary scientific workflows, where hypotheses and parameters…

统计方法学 · 统计学 2026-04-14 Anna Neufeld , Ronan Perry , Daniela Witten

Many clustering schemes are defined by optimizing an objective function defined on the partitions of the underlying set of a finite metric space. In this paper, we construct a framework for studying what happens when we instead impose…

机器学习 · 统计学 2010-12-01 Gunnar Carlsson , Facundo Memoli