This paper surveys the most important developments in multivariate ARCH-type modelling. It reviews the model specifications and inference methods, and identifies likely directions of future research ...

The mockery about “chart crimes” — big boo-boos with data graphics — nearly overshadowed the technology upgrades announced by two artificial intelligence start-ups.

The Reddit AMA got spicy as users peppered OpenAI with questions, and some asked the company to bring back its previous model.