Deep Big Simple Neural Nets Excel on Handwritten Digit Recognition

Good old on-line back-propagation for plain multi-layer perceptrons yields a very low 0.35% error rate on the famous MNIST handwritten digits benchmark. All we need to achieve this best result so far are many hidden layers, many neurons per layer, numerous deformed training images, and graphics cards to greatly speed up learning.Comment: 14 pages, 2 figures, 4 listing

Vimentin organization modulates the formation of lamellipodia

The disassembly and withdrawal of vimentin intermediate filaments (VIF) from the plasma membrane induces membrane ruffling and the formation of a lamellipodium. Conversely, lamellipodium formation is inhibited when VIF are present

Why is Fiscal Policy Often Procyclical?

Many countries, especially developing ones, follow procyclical fiscal policies, namely spending goes up (taxes go down) in booms and spending goes down (taxes go up) in recessions. We provide an explanation for this suboptimal fiscal policy based upon political distortions and incentives for less-than-benevolent government to appropriate rents. Voters have incentives similar to the "starving the Leviathan" classic argument, and demand more public goods or fewer taxes to prevent governments from appropriating rents when the economy is doing well. We test this argument against more traditional explanations based purely on borrowing constraints, with a reasonable amount of success