#!/usr/bin/env python3 # coding: utf-8 # # Statistical Tools import numpy as np # * Helper function to calculate the wheel of fortune def wheel_of_fortune(rank_i,n): return rank_i / (0.5 * n * (n + 1)) def wheel_of_fortune_selection(items: list, item_scores:list): ordering = np.argsort(item_scores) ordering = ordering + 1 wheel_weights = wheel_of_fortune(ordering, len(ordering)) return np.random.choice(items, p=wheel_weights)