Add notebook

Author: susanli2016

mainbpr.ipynb

@@ -0,0 +1,88 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "4f81dbcc",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Reading files...\n",
+      "Finished Reading files.\n",
+      "Iteration 0\n",
+      "Iteration 1\n",
+      "Iteration 2\n",
+      "Iteration 3\n",
+      "Iteration 4\n",
+      "Iteration 5\n",
+      "Iteration 6\n",
+      "Iteration 7\n",
+      "Iteration 8\n",
+      "Iteration 9\n",
+      "Finished updating.\n",
+      "Calculating Hit Rate...\n",
+      "Trained:\n",
+      "HitRate 0.5073891625615764\n",
+      "Number of Users:609\n",
+      "Number of Movies:9742\n"
+     ]
+    }
+   ],
+   "source": [
+    "from filereader import read_ratings, read_movies\n",
+    "from bpr import bpr_update\n",
+    "from hitrate import hit_rate\n",
+    "from random import seed\n",
+    "from util import cov_matrix\n",
+    "from util import random_vector\n",
+    "import numpy as np\n",
+    "import random as random\n",
+    "seed(42)\n",
+    "np.random.seed(42)\n",
+    "print(\"Reading files...\")\n",
+    "users = read_ratings(\"data/ratings.csv\")\n",
+    "movies = read_movies(\"data/movies.csv\")\n",
+    "print(\"Finished Reading files.\")\n",
+    "iterations = 10\n",
+    "\n",
+    "for i in range(iterations):\n",
+    "    print(\"Iteration \" + str(i))\n",
+    "    bpr_update(users, movies)\n",
+    "\n",
+    "print(\"Finished updating.\")\n",
+    "print(\"Calculating Hit Rate...\")\n",
+    "\n",
+    "hits, denom, rms, rmsall = hit_rate(users, movies)\n",
+    "\n",
+    "print(\"Trained:\")\n",
+    "print(\"HitRate\" + ' ' + str(hits/denom))\n",
+    "print(\"Number of Users:\" + str(len(users)))\n",
+    "print(\"Number of Movies:\" + str(len(movies)))"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.8"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}