Spectrum analysis is often used to analyse waveforms. A common configuration, for example, is to create a graph where X is time, Y is frequency, and the brightness of each position represents ...
I'm wondering if there is some measurement or name to this notion, i.e.: Markets typically fall fast, but rise slowly. It seems like this is the case -- get some bad news out of Europe on the debt ...
I am looking for data on market participants at a particular moment (or some proxy/approximation). For example, how can I tell whether mostly big players and HFTs are dominating the market in ...