Em Algorithm, Machine Learning, Data Mining, Jensens Inequality, Bayes Theorem.
the expectation f(E[x]). Succinctly, E[f(x)] ≤ f(E[x]). Concave functions, like the logarithm, are those that ‘bulge’ outward as in Figure 2. The function is always greater than or equal to the chord. Mathematically, for any point p between x and y, f(p) ≥ L(p) where L(p) is the value of the line