A Data Science Central Community
Added by Vincent Granville on December 31, 2013 at 12:00pm — No Comments
Those who read my articles know that I criticize US health care, though I have proposed solutions. Most of my criticism is because it is way too expensive and below average in terms of efficiency. My criticism…Continue
Here are two multiple-choice questions that could be used to uniquely characterize each human that will ever exist on Earth. Even twins will have different answers. It is expected no two human beings to have the same answers.…
Many time series charts seem to exhibit a pattern: an up-trend, apparent periodicity, a stochastic process that seems not to be memory-less, and so on. Look at the following picture, representing stock price simulations. Do you think there is an up-trend? Actually, long term, there isn’t: it’s a realization of a pure random walk. At any time, the chance that it goes up or down by a given amount, is…Continue
Added by Vincent Granville on December 6, 2013 at 1:00pm — No Comments
Here we provide a simple formula easily derived from LinkedIn stats (stats that any of us can collect in a few minutes).
The purpose is to identify, among our LinkedIn connections, the ones with a large network. It's useful if you hire a sales guy (to gauge the size of its network), or if you are looking for a job and talking…Continue