Stochastic volatility is the unpredictable nature of asset price volatility over time. It's a flexible alternative to the Black Scholes' constant volatility assumption.

Objectives In patients with chronic obstructive pulmonary disease (COPD), severe exacerbations (ECOPDs) impose significant morbidity and mortality. Current guidelines emphasise using ECOPD history to ...

Sickening footage shows the moment an elderly Seattle woman had her eye gouged out after she was randomly bashed in the head with a board by a “notorious” repeat-offender thug. Jeanette Marken, 75, ...

Abstract: With its inherent causal reasoning and superior capacity for handling uncertainty, the belief rule base (BRB) has been widely applied in complex systems modeling. As a generalization of ...

Eeny, meeny, miny, mo, catch a tiger by the toe – so the rhyme goes. But even children know that counting-out rhymes like this are no help at making a truly random choice. Perhaps you remember when ...

WASHINGTON, Dec 8 (Reuters) - A fledgling social media platform has asked the U.S. Patent and Trademark Office to cancel trademarks for Twitter so it can take them for itself, contending that ...

European Union regulators on Friday said it is fining Elon Musk's social media platform X $140 million (120 million euros) for violating regulations aimed at protecting internet users in the trading ...

Since he acquired Twitter in 2022, Elon Musk has taken drastic steps to change the political climate of the platform, since rebranded as X. It began with the reinstatement of banned accounts belonging ...

A new feature on X has stirred confusion, anger and a wave of online sleuthing after users discovered that the platform was suddenly displaying the surprising locations where certain accounts are ...

X announced that it will display the region in which an account is based. The information is visible under the new "About This Account" section. X removed the feature for some accounts on Saturday.

X has already removed a feature showing users' country of origin after briefly rolling it out for a few hours late at night. Credit: Jakub Porzycki/NurPhoto via Getty Images If you were perusing Elon ...

What’s happened? X is rolling out a new “About This Account” feature that adds a publicly visible “Based in” label to user profiles. Early testers spotted the update appearing across random accounts, ...