Abstract: This paper is concerned with the problem of policy evaluation with linear function approximation in discounted infinite horizon Markov decision processes ...

Greystone Capital’s 2025 letter: +2.8% net return, key stock-picking lessons, core holdings, and why Shift4 Payments is a new ...

US Dollar Japanese Yen, Gold Spot US Dollar, Silver Spot US Dollar, S&P 500. Read 's Market Analysis on Investing.com ...

There’s a saying that goes “Those who can’t do, teach.” But many could also claim: “Those who can’t do, critique.” Criticism, ...

The world today is marked by paradox. Never before has humanity possessed such extraordinary scientific knowledge, ...

I was on a long-distance bus when two young women sat behind my seat. As usual they started talking about their children. One ...

Despite priding himself on understanding how to thrive as a middle-aged cyclist, Phil Cavell was perilously unaware of the ...

Designed for demanding industry and research applications of scanning, measuring, imaging, and alignment. Ultra-precise linear motor stage, with 1µm straightness/flatness and 1nm absolute encoder, ...

For tasks requiring sub-micrometer precision — such as alignment, adjustment, or fine positioning — PI’s M-235, L-220, and M-230 series linear actuators deliver reliable, high-performance motion.

Working memory is like a mental chalkboard we use to store temporary information while executing other tasks. Scientists worked with more than 200 elementary students to test their working memory, ...

Research led by Lancaster University has revealed clear evidence that changes in the orchestration of brain oxygenation dynamics and neuronal function in Alzheimer's disease contribute to the ...

In the late 19th century, Karl Weierstrass invented a fractal-like function that was decried as nothing less than a “deplorable evil.” In time, it would transform the foundations of mathematics.