{ "cells": [ { "cell_type": "markdown", "id": "d2be01c2-bb2a-490b-bade-56c0defc4a31", "metadata": {}, "source": [ "### Weather Simulation with Markov Chain" ] }, { "cell_type": "code", "execution_count": 1, "id": "0938a32d-af05-440e-a207-b1af52425e98", "metadata": { "tags": [] }, "outputs": [], "source": [ "import random\n", "# List with sunny and rainy\n", "d = ['S', 'R']\n", "# Define empty list\n", "w = []\n", "# Initialize first entry: Chooses randomly a value of list # d and adds (append) it to the empty list w\n", "w.append(random.choice(d))\n", "# Number of days\n", "n = 100000" ] }, { "cell_type": "code", "execution_count": 2, "id": "fd5f38eb-b522-4859-805b-d9cd4b0bd3b2", "metadata": { "tags": [] }, "outputs": [ { "data": { "text/plain": [ "['S']" ] }, "execution_count": 2, "metadata": {}, "output_type": "execute_result" } ], "source": [ "w" ] }, { "cell_type": "code", "execution_count": 3, "id": "e98e5870-9f9e-446c-9714-e25d8585ff87", "metadata": { "tags": [] }, "outputs": [ { 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S S S S S S S S S S S S R R S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S R S R R R R S S S S S S S S S S S S S S S S S S R R R R R R S S S S S S S S S S S S S S S S R S S S S S S S S S S S S R R S S R S S S S S S R R R S S S S S R S S S R S R R R S S S S S S S S S S S S S S S S R S S S S S S S S S R R R S S S S S S S S S S S S S S S S S S S S S S R R S S S S S S S R R R S S S S S S S S S S S S S S S S R S S S S S S S S R R R S S S S S R S R S S S S R R R R S S S S S S S S S R S S S S S S S S S S S S R S S S S S S S S S S S S S S S R S S S S S R S S S S S S R R S S S S S S S S S S S S S S S S S S S R S S S R R R S S S R S S S S S R S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S R R S S S S S S S S R S S S R R S R S S S S S S S S S R S S R S S S S S S S S S S S S S R R S S S R R S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S R S S S S S S S S S R S S S S R R R S S S S S S R S S S S S S S R S S S S S S S S S S S'" ] }, "execution_count": 3, "metadata": {}, "output_type": "execute_result" } ], "source": [ "# Markov chain\n", "for i in range(n):\n", "# If it's sunny on day i add randomly 'S' from d with\n", "# absweight .9 or 'R' with weight 0.1\n", " if w[i] == 'S':\n", " w.append(random.choices(d, weights=[0.9, 0.1])[0])\n", " # If it's rainy on day i add randomly 'S' with weight .5\n", " # or 'R' with weight 0.5\n", " else:\n", " w.append(random.choices(d, weights=[0.5, 0.5])[0])\n", " # Removes quotes ' ' in list w\n", "w_1 = ' '.join(w)\n", "w_1" ] }, { "cell_type": "code", "execution_count": 4, "id": "6c8e96be-29f4-4ac7-a230-38fbccdcaa71", "metadata": { "tags": [] }, "outputs": [ { "data": { "text/plain": [ "0.8361416385836141" ] }, "execution_count": 4, "metadata": {}, "output_type": "execute_result" } ], "source": [ "# Probability of sunny days\n", "w.count('S') / len(w)" ] } ], "metadata": { "kernelspec": { "display_name": "Python 3 (ipykernel)", 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