Top-Down versus Bottom-Up Macroeconomics

Visual Attention: Bottom-Up Versus Top-Down

Visual attention is attracted by salient stimuli that 'pop out' from their surroundings. Attention can also be voluntarily directed to objects of current importance to the observer. What happens in the brain when these two processes interact?

Top-Down Versus Bottom-Up Investing

in a world market where there are tens of thousands of stocks and hundreds of thousands of corporate bonds and other fixed-income securities, it is next to impossible for individual investors who have other things to do to figure out what to buy and what to sell. instead, we buy accounts and funds managed by investment professionals. how do professional investment managers form portfolios of se...

Bottom-up, top-down

Bottom-Up Beats Top-Down

In PEPA, the calculation of the transitions enabled by a process accounts for a large part of the time for the state space exploration of the underlying Markov chain. Unlike other approaches based on recursion, we present a new technique that is iterative—it traverses the process’ binary tree from the sequential components at the leaves up to the root. Empirical results shows that this algorith...

Top-down versus bottom-up learning in cognitive skill acquisition

This paper explores the interaction between implicit and explicit processes during skill learning, in terms of top-down learning (that is, learning that goes from explicit to implicit knowledge) versus bottom-up learning (that is, learning that goes from implicit to explicit knowledge). Instead of studying each type of knowledge (implicit or explicit) in isolation, we stress the interaction bet...