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Study helps explain why motivation to learn declines with age

As people age, they often lose their motivation to learn new things or engage in everyday activities. In a study of mice, MIT neuroscientists have now identified a brain circuit that is critical for maintaining this kind of motivation. This circuit is particularly important for learning to make decisions that require evaluating the cost and…

Markov Chain Monte Carlo (MCMC) Sampling, Part 1: The Basics

This is part 1 of a series of blog posts about MCMC techniques: Part II: Gibbs sampling Part III: Hamiltonian Monte Carlo Part IV: Replica Exchange Markov chain Monte Carlo (MCMC) is a powerful class of methods to sample from probability distributions known only up to an (unknown) normalization constant. But before we dive into…

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Spy agency ducks questions about ‘back doors’ in tech products

SAN FRANCISCO (Reuters) - The U.S. National Security Agency is rebuffing efforts by a leading Congressional critic to determine whether it is continuing to place so-called back doors into commercial technology products, in a controversial practice that critics say damages both U.S. industry and national security.FILE PHOTO: FILE PHOTO: An aerial view of the National…

The creators of South Park have a new weekly deepfake satire show

The fake news: A new weekly satire show from the creators of South Park is using deepfakes, or AI-synthesized media, to poke fun at some of the most important topics of our time. Called Sassy Justice, the show is hosted by the character Fred Sassy, a reporter for the local news station in Cheyenne, Wyoming,…

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Are Men Really Scum?

Are Men Really Scum? This Won’t be the first time you’ve gone through any social media…