South America
Earth's largest otters have chocolate bar-sized babies
Environment Animals Wildlife Endangered Species Earth's largest otters have chocolate bar-sized babies Chester Zoo celebrates the birth of giant otter triplets. More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. While they only weigh 7.1 ounces as babies, giant otters can grow to six-feet-long and weigh up to 71 pounds. Breakthroughs, discoveries, and DIY tips sent six days a week. It turns out that giant otter () newborns are actually quite small, weighing just around 7.1 ounces.
Court challenge over Met Police's use of live facial recognition thrown out
Court challenge over Met Police's use of live facial recognition thrown out Privacy campaigners have lost a High Court challenge aimed at limiting the Metropolitan Police's use of live facial recognition technology. Youth worker Shaun Thompson, and Silkie Carlo, director of campaign group Big Brother Watch, brought the claim over concerns that facial recognition could be used arbitrarily or in a discriminatory way. Scotland Yard defended the challenge, telling the court that the policy was lawful. The Met Police will continue to use the technology, with commissioner Sir Mark Rowley calling the ruling an important victory for public safety. One of the claimants, Thompson, was misidentified by live facial recognition technology (LFR).
Israeli soldiers and settlers kill 11 Palestinians across Gaza, West Bank
'This is an apartheid regime' Israeli soldiers and settlers have killed at least 11 Palestinians across Gaza and the occupied West Bank, according to Palestinian officials and local media, in the latest bloodshed to occur during a "ceasefire" announced in October. In Gaza, at least seven Palestinians were killed in a series of Israeli attacks, including a child who died from injuries sustained days earlier, while 21 were reported on Tuesday to have been injured over a 24-hour period. Another Palestinian man was later killed on Tuesday in an Israeli drone attack near the Sheikh Nasser neighbourhood, east of Khan Younis. In northern Gaza, a Palestinian woman was killed when Israeli naval forces shelled tents sheltering displaced families northwest of Beit Lahiya. Verified video obtained by Al Jazeera showed the body of Abdullah Dawas, a child wrapped in white cloth for burial, after he succumbed to injuries 10 days after being shot in the head near al-Fakhoura clinic in northern Gaza's Jabalia refugee camp.
The 20-somethings juggling three jobs to make ends meet
Ashlin McCourt clocks up 60 hours a week working as a civil servant, a waitress and a baker because life's so expensive, she says. The UK unemployment rate stands at 4.9% - however, increasing numbers of those in work are juggling more than one job. While working in multiple jobs and side hustles has long been a needs must for many households to manage the cost of living, there are now a record 1.35 million adults working at least two jobs. It is mostly Gen Z - adults aged up to 29 - driving this poly-employment trend - according to Deputy, a global workforce management platform, which analysed more than 20 million shifts done by over 300,000 UK workers. For 28-year-old Ashlin from Northern Ireland, having more than one job seems normal.
Conformal Robust Set Estimation
Cholaquidis, Alejandro, Joly, Emilien, Moreno, Leonardo
Conformal prediction provides finite-sample, distribution-free coverage under exchangeability, but standard constructions may lack robustness in the presence of outliers or heavy tails. We propose a robust conformal method based on a non-conformity score defined as the half-mass radius around a point, equivalently the distance to its $(\lfloor n/2\rfloor+1)$-nearest neighbour. We show that the resulting conformal regions are marginally valid for any sample size and converge in probability to a robust population central set defined through a distance-to-a-measure functional. Under mild regularity conditions, we establish exponential concentration and tail bounds that quantify the deviation between the empirical conformal region and its population counterpart. These results provide a probabilistic justification for using robust geometric scores in conformal prediction, even for heavy-tailed or multi-modal distributions.
Covariance-Based Structural Equation Modeling in Small-Sample Settings with $p>n$
Hasegawa, Hiroki, Tamura, Aoba, Okada, Yukihiko
Factor-based Structural Equation Modeling (SEM) relies on likelihood-based estimation assuming a nonsingular sample covariance matrix, which breaks down in small-sample settings with $p>n$. To address this, we propose a novel estimation principle that reformulates the covariance structure into self-covariance and cross-covariance components. The resulting framework defines a likelihood-based feasible set combined with a relative error constraint, enabling stable estimation in small-sample settings where $p>n$ for sign and direction. Experiments on synthetic and real-world data show improved stability, particularly in recovering the sign and direction of structural parameters. These results extend covariance-based SEM to small-sample settings and provide practically useful directional information for decision-making.
Two mountain lion cubs rescued from certain death
Crimson and Clover are now on the road to recovery at Oakland Zoo in California. More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. Crimson (left) was rescued shortly after Clover(right). Breakthroughs, discoveries, and DIY tips sent six days a week. Mountain lions (, cougars, pumas, among its many other names) are carnivorous, sharp-toothed and clawed big cats.
Enhancing AI and Dynamical Subseasonal Forecasts with Probabilistic Bias Correction
Guan, Hannah, Mouatadid, Soukayna, Orenstein, Paulo, Cohen, Judah, Dong, Haiyu, Ni, Zekun, Berman, Jeremy, Flaspohler, Genevieve, Lu, Alex, Schloer, Jakob, Talib, Joshua, Weyn, Jonathan A., Mackey, Lester
Decision-makers rely on weather forecasts to plant crops, manage wildfires, allocate water and energy, and prepare for weather extremes. Today, such forecasts enjoy unprecedented accuracy out to two weeks thanks to steady advances in physics-based dynamical models and data-driven artificial intelligence (AI) models. However, model skill drops precipitously at subseasonal timescales (2 - 6 weeks ahead), due to compounding errors and persistent biases. To counter this degradation, we introduce probabilistic bias correction (PBC), a machine learning framework that substantially reduces systematic error by learning to correct historical probabilistic forecasts. When applied to the leading dynamical and AI models from the European Centre for Medium-Range Weather Forecasts (ECMWF), PBC doubles the subseasonal skill of the AI Forecasting System and improves the skill of the operationally-debiased dynamical model for 91% of pressure, 92% of temperature, and 98% of precipitation targets. We designed PBC for operational deployment, and, in ECMWF's 2025 real-time forecasting competition, its global forecasts placed first for all weather variables and lead times, outperforming the dynamical models from six operational forecasting centers, an international dynamical multi-model ensemble, ECMWF's AI Forecasting System, and the forecasting systems of 34 teams worldwide. These probabilistic skill gains translate into more accurate prediction of extreme events and have the potential to improve agricultural planning, energy management, and disaster preparedness in vulnerable communities.
MinShap: A Modified Shapley Value Approach for Feature Selection
Zheng, Chenghui, Raskutti, Garvesh
Feature selection is a classical problem in statistics and machine learning, and it continues to remain an extremely challenging problem especially in the context of unknown non-linear relationships with dependent features. On the other hand, Shapley values are a classic solution concept from cooperative game theory that is widely used for feature attribution in general non-linear models with highly-dependent features. However, Shapley values are not naturally suited for feature selection since they tend to capture both direct effects from each feature to the response and indirect effects through other features. In this paper, we combine the advantages of Shapley values and adapt them to feature selection by proposing \emph{MinShap}, a modification of the Shapley value framework along with a suite of other related algorithms. In particular for MinShap, instead of taking the average marginal contributions over permutations of features, considers the minimum marginal contribution across permutations. We provide a theoretical foundation motivated by the faithfulness assumption in DAG (directed acyclic graphical models), a guarantee for the Type I error of MinShap, and show through numerical simulations and real data experiments that MinShap tends to outperform state-of-the-art feature selection algorithms such as LOCO, GCM and Lasso in terms of both accuracy and stability. We also introduce a suite of algorithms related to MinShap by using the multiple testing/p-value perspective that improves performance in lower-sample settings and provide supporting theoretical guarantees.
Adaptive Learning via Off-Model Training and Importance Sampling for Fully Non-Markovian Optimal Stochastic Control. Complete version
Leão, Dorival, Ohashi, Alberto, Scotti, Simone, da Silva, Adolfo M. D
This paper studies continuous-time stochastic control problems whose controlled states are fully non-Markovian and depend on unknown model parameters. Such problems arise naturally in path-dependent stochastic differential equations, rough-volatility hedging, and systems driven by fractional Brownian motion. Building on the discrete skeleton approach developed in earlier work, we propose a Monte Carlo learning methodology for the associated embedded backward dynamic programming equation. Our main contribution is twofold. First, we construct explicit dominating training laws and Radon--Nikodym weights for several representative classes of non-Markovian controlled systems. This yields an off-model training architecture in which a fixed synthetic dataset is generated under a reference law, while the dynamic programming operators associated with a target model are recovered by importance sampling. Second, we use this structure to design an adaptive update mechanism under parametric model uncertainty, so that repeated recalibration can be performed by reweighting the same training sample rather than regenerating new trajectories. For fixed parameters, we establish non-asymptotic error bounds for the approximation of the embedded dynamic programming equation via deep neural networks. For adaptive learning, we derive quantitative estimates that separate Monte Carlo approximation error from model-risk error. Numerical experiments illustrate both the off-model training mechanism and the adaptive importance-sampling update in structured linear-quadratic examples.