picking stocks by graph database (part one)

Historical stock price data comes readily available at daily resolution. So we calculated the Granger causality for each pair of stocks we hold data for, at one and two day lags (testing the question “does daily percent change in volume for stock X Granger cause daily percent change in adjusted close price for stock Y?”). […]

on leadership: dead reckoning

Sometimes circumstances require that you calculate your position using no information other than knowledge of your previous direction and distance traveled. Of course, this statement specifically refers to marine navigation, but it serves as a rather good metaphor for life and leadership. Two years ago I became “Emily”, drawing courage only from deep confidence in […]