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Why Sharing a Screenshot Can Get You Jailed in the UAE
The war in Iran has drawn attention to arrests in the United Arab Emirates over online content, but the legal framework behind that enforcement has existed for years. When Iranian missile and drone attacks on the United Arab Emirates began earlier this year, cybercrime laws also came into focus as the conflict played out in the sky--and online. Authorities announced arrests linked to misleading videos, AI-generated clips, illegal filming, and the spread of misinformation. For many residents, the reaction was one of surprise: How could a screenshot, forwarded video, or social media post become a criminal matter? The answer lies in legal frameworks that were already in place.
Ukrainian drones strike Russia's Tuapse refinery for third time
What are Russia's gains from the Iran war? 'We are not losers; we are winners' Ukrainian drones strike Russia's Tuapse refinery for third time NewsFeed Ukrainian drones strike Russia's Tuapse refinery for third time Ukraine has targeted a major Russian oil refinery in the Black Sea port city of Tuapse for the third time in less than two weeks, setting off a fresh blaze and prompting authorities to evacuate local residents. Qatar says using Hormuz Strait as political weapon is'unacceptable' Australia's top diplomat visits China to talk energy security
UAE leaves OPEC in blow to oil cartel amid war on Iran
The United Arab Emirates has announced it's withdrawing from OPEC and OPEC+. Al Jazeera's Michael Appel outlines the significance of the announcement and its likely impact on the energy market. Ukrainian drones strike Russia's Tuapse refinery for third time Qatar says using Hormuz Strait as political weapon is'unacceptable' Australia's top diplomat visits China to talk energy security
Google and the Pentagon sign classified deal to give the Department of Defense unfettered access to its AI models
A source says the contract doesn't give the company any veto power over how the tech is used by the government. Google has signed a deal that allows the US Department of Defense to use its AI models for any lawful government purpose. This is according to a report by, which also notes that the full details of the contract are classified. An anonymous source within the company has suggested that the two entities have agreed that the search giant's AI tech shouldn't be used for domestic mass surveillance or autonomous weapons without appropriate human oversight and control. However, the contract also reportedly doesn't give Google any right to control or veto anything the government decides to do.
Time Series Kernels based on Nonlinear Vector AutoRegressive Delay Embeddings
Kernel design is a pivotal but challenging aspect of time series analysis, especially in the context of small datasets. In recent years, Reservoir Computing (RC) has emerged as a powerful tool to compare time series based on the underlying dynamics of the generating process rather than the observed data. However, the performance of RC highly depends on the hyperparameter setting, which is hard to interpret and costly to optimize because of the recurrent nature of RC. Here, we present a new kernel for time series based on the recently established equivalence between reservoir dynamics and Nonlinear Vector AutoRegressive (NVAR) processes. The kernel is non-recurrent and depends on a small set of meaningful hyperparameters, for which we suggest an effective heuristic. We demonstrate excellent performance on a wide range of real-world classification tasks, both in terms of accuracy and speed. This further advances the understanding of RC representation learning models and extends the typical use of the NVAR framework to kernel design and representation of real-world time series data.
Interaction Measures, Partition Lattices and Kernel Tests for High-Order Interactions Zhaolu Liu1 Robert L. Peach2,3 Pedro A.M. Mediano4 Mauricio Barahona1
Models that rely solely on pairwise relationships often fail to capture the complete statistical structure of the complex multivariate data found in diverse domains, such as socio-economic, ecological, or biomedical systems. Non-trivial dependencies between groups of more than two variables can play a significant role in the analysis and modelling of such systems, yet extracting such high-order interactions from data remains challenging. Here, we introduce a hierarchy of d-order interaction measures, increasingly inclusive of possible factorisations of the joint probability distribution, and define non-parametric, kernel-based tests to establish systematically the statistical significance of d-order interactions. We also establish mathematical links with lattice theory, which elucidate the derivation of the interaction measures and their composite permutation tests; clarify the connection of simplicial complexes with kernel matrix centring; and provide a means to enhance computational efficiency. We illustrate our results numerically with validations on synthetic data, and through an application to neuroimaging data.
GeoPhy: Differentiable Phylogenetic Inference via Geometric Gradients of Tree Topologies
Phylogenetic inference, grounded in molecular evolution models, is essential for understanding the evolutionary relationships in biological data. Accounting for the uncertainty of phylogenetic tree variables, which include tree topologies and evolutionary distances on branches, is crucial for accurately inferring species relationships from molecular data and tasks requiring variable marginalization. Variational Bayesian methods are key to developing scalable, practical models; however, it remains challenging to conduct phylogenetic inference without restricting the combinatorially vast number of possible tree topologies. In this work, we introduce a novel, fully differentiable formulation of phylogenetic inference that leverages a unique representation of topological distributions in continuous geometric spaces. Through practical considerations on design spaces and control variates for gradient estimations, our approach, GeoPhy, enables variational inference without limiting the topological candidates. In experiments using real benchmark datasets, GeoPhy significantly outperformed other approximate Bayesian methods that considered whole topologies.