new initialization method

This commit is contained in:
Jonas Weinz 2019-11-08 10:47:58 +01:00
parent 1049e54976
commit 020685c86a
3 changed files with 3200 additions and 1 deletions

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"language_info": {
"name": "python",
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"name": "ipython",
"version": 3
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"cells": [
{
"cell_type": "markdown",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"# Statistical Tools"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"import numpy as np"
]
},
{
"cell_type": "markdown",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"* Helper function to calculate the wheel of fortune"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
"def wheel_of_fortune(rank_i,n):\n",
" return rank_i / (0.5 * n * (n + 1))"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {},
"outputs": [],
"source": [
"def wheel_of_fortune_selection(items: list, item_scores:list):\n",
" ordering = np.argsort(item_scores)\n",
" ordering = ordering + 1\n",
"\n",
" wheel_weights = wheel_of_fortune(ordering, len(ordering))\n",
"\n",
" return np.random.choice(items, p=wheel_weights)\n"
]
}
]
}

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#!/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)