标签：#tv

A probabilistic model can describe more than the data you observe. It can also include hidden variables that capture structure you cannot observe directly. But defining that model is only the beginning. Once an observation x is available, the practical question changes: Given this x , what does the model imply about the hidden variable z ? That is the central problem of Posterior Inference . The notation is compact, but the computation is not always easy. High-dimensional latent spaces, complex posterior distributions, and interactions among hidden variables can make both the posterior itself and expectations under that posterior difficult to compute. Start with the Joint Distribution Suppose a probabilistic model contains an observed variable x and a hidden or latent variable z . The model does not treat them as unrelated quantities. Instead, it represents their probabilistic relationship through a Joint Distribution : p ( z , x ) This joint distribution describes how the observed data and the hidden variable fit together inside a single probability structure. Once x is observed, however, the question becomes conditional. We are no longer asking only how x and z relate in general. We want to know how the possible values of z are distributed given the particular observation x . That conditional distribution is the posterior. Posterior Distribution: Conditioning on Observed Data The Posterior Distribution is p ( z ∣ x ) = p ( x ) p ( z , x ) ​ The numerator p ( z , x ) contains the probabilistic relationship between the latent variable and the observation. The denominator p ( x ) normalizes those values so that the result becomes a conditional probability distribution over z . The distinction is important: The joint distribution p ( z , x ) describes the probability structure of the model. The posterior distribution p ( z ∣ x ) tells us what that structure implies about z after x has been observed. In that sense, the posterior connects the model with actual data. Pos

'You Can See Everything' was filmed in 2023 before Elizabeth Holmes reported to prison to serve an 11-year sentence for defrauding Theranos investors.

In the case of IMAX, bigger really is better.

Roku's new free programming gives AI creators a platform for their productions. Whether the public will embrace it remains to be seen,

Alfonso Cuarón will executive produce the dark fantasy vampire story based on the popular D&D campaign setting.

Detail-preserving optical lens shift is not something you expect to find on an ultra-short throw projector running Google TV, but that's exactly what you'll find inside of Awol Vision's new LuxVision. It also promises to produce an incredibly bright (6000 ISO Lumens) 4K 120Hz image measuring 120 inches when placed just 7.5 inches from the […]

OLED screens run the biggest risk of burn-in, but with a little common sense you can mitigate the issue.

The Street Fighter movie looks silly and campy and that's just fine!

If you've lost your Roku remote but would still like to watch something on TV, the Roku mobile app is the answer.

Just a few weeks ago the only midrange OLED options available were from LG and Samsung. But after Sony officially announced the Bravia 6 last week, Roku has now launched its first-ever OLED TV - the Roku Pro Series - which will be followed by the step-up Pro Series LX next month. The Roku Pro […]

JMGO's 4K 120Hz Iris Ultra Max all-in-one Google TV projector is now available outside China. It gets its name from a new dual-iris system that lets it produce an impressive 10,000:1 native contrast, according to JMGO. It boosts the contrast - always an issue with projectors - by placing two separate physical apertures (irises) along […]

The physical setup of a subwoofer can be the difference between bass that swallows you up and bass that seems to come from a specific spot.

Ad-supported streaming channels are hitting Sony's console in the US today.

If your algorithm is out of whack recently, there are things you can do to get it back on track with content you like.

4K is a catchier marketing term than 2160p, but the resolution also has this name for a reason.

There's plenty of 4K content to watch on your 4K TV, but not everything is in Ultra HD. Thankfully, you can check what you're currently seeing.

Annual Apple TV subscriptions get the biggest bump.

Now, Apple TV subscriptions will cost $14.99 per month, up from its previous price of $12.99 per month.

Confusion is a generally accepted side effect of mystery box shows. They slather on secrets with the promise of a satisfying payoff in the end, and sometimes the cast and crew even have a hard time following what's going on. But even by the standards of the genre, Dark Matter is extreme. Its multiversal premise, […]

The IMAX logo doesn't always tell you what kind of screen or projector you're getting.