duvenaud

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.colors import LinearSegmentedColormap
from scipy.stats import norm

def plot_transparent_hexbin(ax, x, y, c, color):
    cdict = {'red':   ((0., color[0], color[0]), (1., color[0], color[0])),
             'green': ((0., color[1], color[1]), (1., color[1], color[1])),
             'blue':  ((0., color[2], color[2]), (1., color[2], color[2])),
             'alpha': ((0., 0., 0.), (1., 1., 1.))}

duvenaud

import linalg

instance [Add a] Add (i:n => (..<i) => a)  -- Lower triangular tables
  add = \xs ys. for i. xs.i + ys.i
  sub = \xs ys. for i. xs.i - ys.i
  zero = for _. zero

instance [Add a] Add (i:n => (i<..) => a)  -- Lower triangular tables
  add = \xs ys. for i. xs.i + ys.i
  sub = \xs ys. for i. xs.i - ys.i