Credit: Pixabay/CC0 Public Domain Australia’s top spy on Wednesday urged greater cooperation from the big tech companies, asking them to break a long-held industry taboo by providing access to encrypted messages. Intelligence chief Mike Burgess said encrypted messaging had compromised the ability to root out threats, and said tech companies had a duty to break […]
The logo for the Tesla Supercharger station is seen in Buford, Ga, April 22, 2021. Faced with falling global sales and a tumbling stock price, Tesla has slashed prices again on some of its electric vehicles and its “Full Self Driving” system. Tesla releases first-quarter earnings Tuesday, April 23, 2024. Credit: AP Photo/Chris Carlson, File […]
SharpeRatio@k, a novel evaluation metric for Off-Policy Evaluation estimators, effectively measures the risk-return tradeoff of evaluating policies used in reinforcement learning and contextual bandits, which are typically ignored by conventional metrics, show scientists at Tokyo Tech. This novel metric, inspired from risk assessment in financial portfolio management, provides a more insightful evaluation of OPE, paving […]
Graphical abstract. Credit: Green Energy and Intelligent Transportation (2023). DOI: 10.1016/j.geits.2023.100130 Researchers from the University of Missouri-Kansas City, School of Computing and Engineering, and independent researchers have developed a model, dubbed GREENSKY, that significantly enhances the energy efficiency and operational time of Unmanned Aerial Vehicles (UAVs) in cellular networks. In the ever-evolving landscape of wireless […]
Schematic of the generation of structured EVBs. The binary holographic phase masks can be engineered with the generalized spiral phase to shape the incident free electrons to generate structured EVBs with customizable intensity patterns. The phase mask is composed of nanoscale forked gratings fabricated on 100 nm-thick silicon nitride membranes. Credit: Opto-Electronic Advances (2024). DOI: […]
(a) Crystal structure of Bi/MnBi2Te4 vdW heterostructure. (b) Schematic diagram showing controllable magnetism and topological phase transition in the material. The magnetization orientation (Mi: i=x, y,z; red arrows) is tunable by applying strain (denoted by purple arrows) or magnetic field. QAH states with controllable Chern numbers are realized by changing the magnetization orientation or twisting […]
China’s Leap into Low-Altitude Airspace Management: A Journey Toward Integrated UAS Operations. Credit: GREEN ENERGY AND INTELLIGENT TRANSPORTATION As China propels itself into a new era of aviation with its significant advancements in unmanned aerial systems (UAS), the nation is on the brink of a transformative shift in low-altitude airspace management. These changes are driven […]
Credit: Unsplash/CC0 Public Domain How do algorithms determine the way we interact with our memories? It’s a uniquely 21st-century kind of question, and it is far from settled. In a new paper in the journal Memory, Mind & Media, Concordia Ph.D. candidate Chrys Vilvang argues that the way tech companies store, package and share personal […]
Four elementary monotonic functions (exponential, logarithmic, square, and sine) were applied immediately after Coordinate-Wise Rank Transformation (CRT) and normalized to [-1, 1] in a coordinate-wise manner. The three circles on the radar plot correspond to the first-order Model Indistinguishability, the second-order Model Indistinguishability and the Mean Absolute Error of the exp(CRT) model (the largest among […]