slides updated

P0. Data preparation.ipynb

@@ -9,7 +9,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -55,7 +55,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [
     {
@@ -134,7 +134,7 @@
        "4   166   346       1  886397596"
       ]
      },
-     "execution_count": 8,
+     "execution_count": 2,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -152,7 +152,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [
     {
@@ -181,7 +181,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [
     {
@@ -223,7 +223,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [
     {
@@ -265,7 +265,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [
     {
@@ -280,7 +280,7 @@
        "Name: user, dtype: float64"
       ]
      },
-     "execution_count": 12,
+     "execution_count": 6,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -298,7 +298,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": 7,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -309,7 +309,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [
     {
@@ -336,7 +336,7 @@
        " 18: 'Western'}"
       ]
      },
-     "execution_count": 14,
+     "execution_count": 8,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -347,7 +347,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 9,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -356,7 +356,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 16,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [
     {
@@ -500,7 +500,7 @@
        "[3 rows x 24 columns]"
       ]
      },
-     "execution_count": 16,
+     "execution_count": 10,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -511,7 +511,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 17,
+   "execution_count": 11,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -521,7 +521,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 18,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -530,7 +530,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 19,
+   "execution_count": 13,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -540,7 +540,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 20,
+   "execution_count": 14,
    "metadata": {},
    "outputs": [
     {
@@ -613,7 +613,7 @@
        "4   5     Copycat (1995)         Crime, Drama, Thriller"
       ]
      },
-     "execution_count": 20,
+     "execution_count": 14,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -632,7 +632,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 15,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -642,7 +642,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 22,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [],
    "source": [

P1. Baseline.ipynb

@@ -307,7 +307,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "1.1 µs ± 63.6 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)\n",
+      "885 ns ± 165 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)\n",
       "Inefficient way to access items rated by user:\n"
      ]
     },
@@ -325,7 +325,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "149 µs ± 13.2 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)\n"
+      "153 µs ± 9.4 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)\n"
      ]
     }
    ],
@@ -1200,14 +1200,14 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "RMSE: 1.5133\n",
-      "MAE:  1.2143\n"
+      "RMSE: 1.5317\n",
+      "MAE:  1.2304\n"
      ]
     },
     {
      "data": {
       "text/plain": [
-       "1.2143089419556985"
+       "1.2303840461147084"
       ]
      },
      "execution_count": 25,