Can you solve it? 24 hour puzzle people

The little-known sport of extreme puzzling held its premier tournament this weekend in Hungary. The annual 24 Hour Puzzle Championship is a physical and intellectual endurance event in which contestants from around the world solve puzzles non-stop from 10am on Saturday to 10am on Sunday. “I have no idea why puzzlers from all over the…

Three times political conflict reshaped American mathematics

International forces advancing toward Boxer soldiers outside the Imperial Palace in Beijing, China, during the Boxer Rebellion. Credit: Library of Congress Wars. Politics. Dynasties. Nationalism. Although mathematics isn’t typically associated with these ideas, they have combined to yield a tremendous impact on its development in the U.S. Political conflicts have led to new study abroad…

Is it the end of 'statistical significance'? The battle to make science more uncertain

A quick guide to p-values. Credit: Repapetilto/Wikimedia, CC BY-SA The scientific world is abuzz following recommendations by two of the most prestigious scholarly journals – The American Statistician and Nature – that the term “statistical significance” be retired. In their introduction to the special issue of The American Statistician on the topic, the journal’s editors…

Sentiment analysis for portfolio management

Figure shows the simulated performance of three different portfolios on the Tokyo Stock Exchange using the asset pricing model incorporating sentiment analysis developed by the research team. The portfolios comprise 10, 30 and 50 different stocks. The daily performance of the portfolios is accumulated to form the cumulative return. The number of stocks with analyst…