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AI & Machine Learning

The most popular blog posts about ai & machine learning on Hacker News. 109 posts.

2019
99

Notes on Weight Initialization for Deep Neural Networks

Neural networks involve long sequence of multiplications, usually between a matrix and a vector, say \(a*x\). The result of this sequence of multiplications will either have a huge magnitude or be reduced to 0. We can divide \(a\) by a number ( scaling_factor ) to scale down its magnitude to the right level. Proper…

104

Gaussian Processes Are Not So Fancy

Gaussian Processes have a mystique related to the dense probabilistic terminology that's already evident in their name. But Gaussian Processes are just models, and they're much more like k-nearest neighbors and linear regression than may at first be apparent.