diff --git a/doc/pub/week46/html/._week46-bs001.html b/doc/pub/week46/html/._week46-bs001.html
index a9d022613..6bcaaf6f0 100644
--- a/doc/pub/week46/html/._week46-bs001.html
+++ b/doc/pub/week46/html/._week46-bs001.html
@@ -263,6 +263,9 @@ MathJax.Hub.Config({
   <li> <a href="https://youtu.be/F3CkH-opbdY" target="_self">Video of lecture</a></li>
 </ul>
 <li> <b>Friday</b>: Support vector machines and start Principal Component Analysis</li>
+<ul>
+  <li> <a href="https://youtu.be/BbupEEvMXtg" target="_self">Video of lecture</a></li>
+</ul>
 </ul>
 <div class="panel panel-default">
 <div class="panel-body">
diff --git a/doc/pub/week46/html/week46-reveal.html b/doc/pub/week46/html/week46-reveal.html
index 490897c8f..137b831ff 100644
--- a/doc/pub/week46/html/week46-reveal.html
+++ b/doc/pub/week46/html/week46-reveal.html
@@ -205,6 +205,11 @@ MathJax.Hub.Config({
 </ul>
 <p>
 <p><li> <b>Friday</b>: Support vector machines and start Principal Component Analysis</li>
+<ul>
+
+<p><li> <a href="https://youtu.be/BbupEEvMXtg" target="_blank">Video of lecture</a></li>
+</ul>
+<p>
 </ul>
 <p>
 <div class="alert alert-block alert-block alert-text-normal">
diff --git a/doc/pub/week46/html/week46-solarized.html b/doc/pub/week46/html/week46-solarized.html
index b86b3a7d5..643042f63 100644
--- a/doc/pub/week46/html/week46-solarized.html
+++ b/doc/pub/week46/html/week46-solarized.html
@@ -228,6 +228,9 @@ MathJax.Hub.Config({
   <li> <a href="https://youtu.be/F3CkH-opbdY" target="_blank">Video of lecture</a></li>
 </ul>
 <li> <b>Friday</b>: Support vector machines and start Principal Component Analysis</li>
+<ul>
+  <li> <a href="https://youtu.be/BbupEEvMXtg" target="_blank">Video of lecture</a></li>
+</ul>
 </ul>
 <div class="alert alert-block alert-block alert-text-normal">
 <b>Reading</b>
diff --git a/doc/pub/week46/html/week46.html b/doc/pub/week46/html/week46.html
index c816d0a94..e27500ca8 100644
--- a/doc/pub/week46/html/week46.html
+++ b/doc/pub/week46/html/week46.html
@@ -305,6 +305,9 @@ MathJax.Hub.Config({
   <li> <a href="https://youtu.be/F3CkH-opbdY" target="_blank">Video of lecture</a></li>
 </ul>
 <li> <b>Friday</b>: Support vector machines and start Principal Component Analysis</li>
+<ul>
+  <li> <a href="https://youtu.be/BbupEEvMXtg" target="_blank">Video of lecture</a></li>
+</ul>
 </ul>
 <div class="alert alert-block alert-block alert-text-normal">
 <b>Reading</b>
diff --git a/doc/pub/week46/ipynb/ipynb-week46-src.tar.gz b/doc/pub/week46/ipynb/ipynb-week46-src.tar.gz
index 75b8a3203..84247e377 100644
Binary files a/doc/pub/week46/ipynb/ipynb-week46-src.tar.gz and b/doc/pub/week46/ipynb/ipynb-week46-src.tar.gz differ
diff --git a/doc/pub/week46/ipynb/week46.ipynb b/doc/pub/week46/ipynb/week46.ipynb
index c518b9766..7c7488874 100644
--- a/doc/pub/week46/ipynb/week46.ipynb
+++ b/doc/pub/week46/ipynb/week46.ipynb
@@ -2,7 +2,7 @@
  "cells": [
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+   "id": "33138a96",
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@@ -14,7 +14,7 @@
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+   "id": "9478c6c3",
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@@ -29,7 +29,7 @@
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-   "id": "01254abd",
+   "id": "bd37d5e9",
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@@ -42,6 +42,8 @@
     "\n",
     "* **Friday**: Support vector machines and start Principal Component Analysis\n",
     "\n",
+    "  * [Video of lecture](https://youtu.be/BbupEEvMXtg)\n",
+    "\n",
     "**Reading.**\n",
     "\n",
     "Reading recommendations:\n",
@@ -60,7 +62,7 @@
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@@ -116,7 +118,7 @@
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@@ -195,7 +197,7 @@
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@@ -215,7 +217,7 @@
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@@ -240,7 +242,7 @@
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@@ -252,7 +254,7 @@
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@@ -265,7 +267,7 @@
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@@ -289,7 +291,7 @@
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@@ -334,7 +336,7 @@
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@@ -359,7 +361,7 @@
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@@ -371,7 +373,7 @@
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@@ -381,7 +383,7 @@
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@@ -410,7 +412,7 @@
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@@ -422,7 +424,7 @@
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@@ -434,7 +436,7 @@
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@@ -448,7 +450,7 @@
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@@ -460,7 +462,7 @@
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@@ -474,7 +476,7 @@
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@@ -496,7 +498,7 @@
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@@ -508,7 +510,7 @@
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@@ -564,7 +566,7 @@
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@@ -576,7 +578,7 @@
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@@ -586,7 +588,7 @@
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@@ -600,7 +602,7 @@
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@@ -619,7 +621,7 @@
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@@ -635,7 +637,7 @@
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@@ -647,7 +649,7 @@
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@@ -659,7 +661,7 @@
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@@ -671,7 +673,7 @@
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@@ -681,7 +683,7 @@
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@@ -693,7 +695,7 @@
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@@ -704,7 +706,7 @@
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@@ -716,7 +718,7 @@
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@@ -729,7 +731,7 @@
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@@ -742,7 +744,7 @@
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@@ -754,7 +756,7 @@
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@@ -764,7 +766,7 @@
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@@ -786,7 +788,7 @@
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@@ -798,7 +800,7 @@
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@@ -815,7 +817,7 @@
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@@ -1176,7 +1178,7 @@
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@@ -1186,7 +1188,7 @@
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@@ -1203,7 +1205,7 @@
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@@ -1214,7 +1216,7 @@
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@@ -1227,7 +1229,7 @@
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@@ -1239,7 +1241,7 @@
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@@ -1249,7 +1251,7 @@
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@@ -1261,7 +1263,7 @@
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@@ -1271,7 +1273,7 @@
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@@ -1283,7 +1285,7 @@
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@@ -1293,7 +1295,7 @@
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@@ -1305,7 +1307,7 @@
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@@ -1315,7 +1317,7 @@
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@@ -1327,7 +1329,7 @@
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@@ -1337,7 +1339,7 @@
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@@ -1357,7 +1359,7 @@
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@@ -1369,7 +1371,7 @@
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@@ -1379,7 +1381,7 @@
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@@ -1391,7 +1393,7 @@
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@@ -1407,7 +1409,7 @@
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@@ -1419,7 +1421,7 @@
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@@ -1431,7 +1433,7 @@
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@@ -1441,7 +1443,7 @@
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@@ -1453,7 +1455,7 @@
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@@ -1465,7 +1467,7 @@
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@@ -1477,7 +1479,7 @@
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@@ -1487,7 +1489,7 @@
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@@ -1499,7 +1501,7 @@
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@@ -1509,7 +1511,7 @@
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@@ -1521,7 +1523,7 @@
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@@ -1531,7 +1533,7 @@
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@@ -1543,7 +1545,7 @@
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@@ -1554,7 +1556,7 @@
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@@ -1566,7 +1568,7 @@
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@@ -1578,7 +1580,7 @@
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@@ -1588,7 +1590,7 @@
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@@ -1600,7 +1602,7 @@
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@@ -1626,7 +1628,7 @@
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@@ -1683,7 +1685,7 @@
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@@ -1695,7 +1697,7 @@
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@@ -1707,7 +1709,7 @@
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@@ -1717,7 +1719,7 @@
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@@ -1729,7 +1731,7 @@
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@@ -1739,7 +1741,7 @@
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@@ -1751,7 +1753,7 @@
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@@ -1762,7 +1764,7 @@
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@@ -1774,7 +1776,7 @@
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@@ -1784,7 +1786,7 @@
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@@ -1796,7 +1798,7 @@
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@@ -1814,7 +1816,7 @@
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@@ -1825,7 +1827,7 @@
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@@ -1837,7 +1839,7 @@
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@@ -1847,7 +1849,7 @@
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@@ -1864,7 +1866,7 @@
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@@ -1878,7 +1880,7 @@
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@@ -1893,7 +1895,7 @@
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@@ -1905,7 +1907,7 @@
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@@ -1933,7 +1935,7 @@
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@@ -1945,7 +1947,7 @@
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@@ -1960,7 +1962,7 @@
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@@ -1971,7 +1973,7 @@
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@@ -2170,7 +2172,7 @@
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@@ -2182,7 +2184,7 @@
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@@ -2197,7 +2199,7 @@
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@@ -2214,7 +2216,7 @@
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@@ -2235,7 +2237,7 @@
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@@ -2248,7 +2250,7 @@
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@@ -2258,7 +2260,7 @@
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@@ -2270,7 +2272,7 @@
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@@ -2285,7 +2287,7 @@
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@@ -2295,7 +2297,7 @@
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@@ -2314,7 +2316,7 @@
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@@ -2324,7 +2326,7 @@
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@@ -2336,7 +2338,7 @@
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@@ -2346,7 +2348,7 @@
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@@ -2358,7 +2360,7 @@
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@@ -2368,7 +2370,7 @@
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@@ -2380,7 +2382,7 @@
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@@ -2391,7 +2393,7 @@
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@@ -2403,7 +2405,7 @@
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@@ -2415,7 +2417,7 @@
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@@ -2440,7 +2442,7 @@
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@@ -2452,7 +2454,7 @@
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@@ -2469,7 +2471,7 @@
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@@ -2483,7 +2485,7 @@
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@@ -2510,7 +2512,7 @@
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@@ -2526,7 +2528,7 @@
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@@ -2540,7 +2542,7 @@
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@@ -2550,7 +2552,7 @@
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@@ -2562,7 +2564,7 @@
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@@ -2572,7 +2574,7 @@
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@@ -2584,7 +2586,7 @@
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@@ -2594,7 +2596,7 @@
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@@ -2608,7 +2610,7 @@
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@@ -2623,7 +2625,7 @@
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@@ -2635,7 +2637,7 @@
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@@ -2648,7 +2650,7 @@
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@@ -2662,7 +2664,7 @@
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@@ -2672,7 +2674,7 @@
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@@ -2684,7 +2686,7 @@
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@@ -2703,7 +2705,7 @@
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@@ -2715,7 +2717,7 @@
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   {
    "cell_type": "markdown",
-   "id": "6094f53c",
+   "id": "de9a6b79",
    "metadata": {
     "editable": true
    },
@@ -2727,7 +2729,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4c4505d0",
+   "id": "43a5fbc9",
    "metadata": {
     "editable": true
    },
@@ -2737,7 +2739,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "829097d7",
+   "id": "3704397f",
    "metadata": {
     "editable": true
    },
@@ -2749,7 +2751,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ed108851",
+   "id": "b56dbfe1",
    "metadata": {
     "editable": true
    },
@@ -2763,7 +2765,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "95e01fea",
+   "id": "734d41bb",
    "metadata": {
     "editable": true
    },
@@ -2782,7 +2784,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f4714a68",
+   "id": "f2d39594",
    "metadata": {
     "editable": true
    },
@@ -2794,7 +2796,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ad24ff7b",
+   "id": "a19a1fbb",
    "metadata": {
     "editable": true
    },
@@ -2813,7 +2815,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "996fb4b4",
+   "id": "a31b503d",
    "metadata": {
     "editable": true
    },
@@ -2829,7 +2831,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "59fd3d2a",
+   "id": "56313cef",
    "metadata": {
     "editable": true
    },
@@ -2847,7 +2849,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0c41f7df",
+   "id": "47f72445",
    "metadata": {
     "editable": true
    },
@@ -2862,7 +2864,7 @@
   {
    "cell_type": "code",
    "execution_count": 6,
-   "id": "2748907d",
+   "id": "6f2d625b",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2883,7 +2885,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ee18b064",
+   "id": "57f92a47",
    "metadata": {
     "editable": true
    },
@@ -2900,7 +2902,7 @@
   {
    "cell_type": "code",
    "execution_count": 7,
-   "id": "933d4a1c",
+   "id": "c5153486",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2932,7 +2934,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "52a7803c",
+   "id": "9493f9d0",
    "metadata": {
     "editable": true
    },
@@ -2946,7 +2948,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "353e87bc",
+   "id": "1c928100",
    "metadata": {
     "editable": true
    },
@@ -2959,7 +2961,7 @@
   {
    "cell_type": "code",
    "execution_count": 8,
-   "id": "7d5b07f0",
+   "id": "2a595914",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2983,7 +2985,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4a33c294",
+   "id": "2aad1f5e",
    "metadata": {
     "editable": true
    },
@@ -2996,7 +2998,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
-   "id": "eebb9c1e",
+   "id": "7138c3f1",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3050,7 +3052,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2d3e36c0",
+   "id": "ea95eb4b",
    "metadata": {
     "editable": true
    },
@@ -3065,7 +3067,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "82cd7ebe",
+   "id": "ec7505bf",
    "metadata": {
     "editable": true
    },
@@ -3077,7 +3079,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c8fe9819",
+   "id": "270b6937",
    "metadata": {
     "editable": true
    },
@@ -3089,7 +3091,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0ffbbed1",
+   "id": "9c4ae15a",
    "metadata": {
     "editable": true
    },
@@ -3099,7 +3101,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "de8e3cc9",
+   "id": "4c3862b9",
    "metadata": {
     "editable": true
    },
@@ -3116,7 +3118,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e01249ec",
+   "id": "87ea22ad",
    "metadata": {
     "editable": true
    },
@@ -3128,7 +3130,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "538a04b0",
+   "id": "2b758466",
    "metadata": {
     "editable": true
    },
@@ -3143,7 +3145,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e155d809",
+   "id": "705df44d",
    "metadata": {
     "editable": true
    },
@@ -3153,7 +3155,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5558f48c",
+   "id": "e03302e2",
    "metadata": {
     "editable": true
    },
@@ -3167,7 +3169,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1bca3032",
+   "id": "bd85c44d",
    "metadata": {
     "editable": true
    },
@@ -3179,7 +3181,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bbecf0f6",
+   "id": "b9e33f93",
    "metadata": {
     "editable": true
    },
@@ -3191,7 +3193,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a3a3ab0d",
+   "id": "af401cb6",
    "metadata": {
     "editable": true
    },
@@ -3203,7 +3205,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b893aded",
+   "id": "b8dd58a1",
    "metadata": {
     "editable": true
    },
@@ -3218,7 +3220,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "eeadb7d8",
+   "id": "7d8fae46",
    "metadata": {
     "editable": true
    },
@@ -3230,7 +3232,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ba4c03ae",
+   "id": "15c9fccf",
    "metadata": {
     "editable": true
    },
@@ -3240,7 +3242,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3a788b7f",
+   "id": "de715529",
    "metadata": {
     "editable": true
    },
@@ -3252,7 +3254,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1104daac",
+   "id": "8e10e8b1",
    "metadata": {
     "editable": true
    },
@@ -3262,7 +3264,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c9ed6db5",
+   "id": "eaadb96f",
    "metadata": {
     "editable": true
    },
@@ -3274,7 +3276,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ed897072",
+   "id": "32d6cc7e",
    "metadata": {
     "editable": true
    },
@@ -3312,7 +3314,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ff702ab2",
+   "id": "a721a8ef",
    "metadata": {
     "editable": true
    },
@@ -3325,7 +3327,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "06dc6b42",
+   "id": "95958478",
    "metadata": {
     "editable": true
    },
@@ -3339,7 +3341,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "04407b76",
+   "id": "f5634344",
    "metadata": {
     "editable": true
    },
@@ -3351,7 +3353,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5228e923",
+   "id": "b97891de",
    "metadata": {
     "editable": true
    },
@@ -3364,7 +3366,7 @@
   {
    "cell_type": "code",
    "execution_count": 10,
-   "id": "8592774d",
+   "id": "dfc63732",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3383,7 +3385,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f0ebc399",
+   "id": "2ee32a4b",
    "metadata": {
     "editable": true
    },
@@ -3393,7 +3395,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "17f41af2",
+   "id": "af1caa0d",
    "metadata": {
     "editable": true
    },
@@ -3405,7 +3407,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1f7f0973",
+   "id": "b4f5708a",
    "metadata": {
     "editable": true
    },
@@ -3417,7 +3419,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f15f3178",
+   "id": "6834a96c",
    "metadata": {
     "editable": true
    },
@@ -3427,7 +3429,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "55246445",
+   "id": "bf4f10ca",
    "metadata": {
     "editable": true
    },
@@ -3439,7 +3441,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "02f72674",
+   "id": "de6ef2cc",
    "metadata": {
     "editable": true
    },
@@ -3453,7 +3455,7 @@
   {
    "cell_type": "code",
    "execution_count": 11,
-   "id": "b314b0fd",
+   "id": "e162c419",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3469,7 +3471,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "38c7a77e",
+   "id": "892b5bbc",
    "metadata": {
     "editable": true
    },
@@ -3488,7 +3490,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ea7382fa",
+   "id": "eede92b0",
    "metadata": {
     "editable": true
    },
@@ -3500,7 +3502,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a71325ac",
+   "id": "cb609e14",
    "metadata": {
     "editable": true
    },
@@ -3512,7 +3514,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2b461f6b",
+   "id": "afcad30f",
    "metadata": {
     "editable": true
    },
@@ -3524,7 +3526,7 @@
   {
    "cell_type": "code",
    "execution_count": 12,
-   "id": "0eab82b4",
+   "id": "de448512",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3537,7 +3539,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1906dde5",
+   "id": "d5c7895a",
    "metadata": {
     "editable": true
    },
@@ -3549,7 +3551,7 @@
   {
    "cell_type": "code",
    "execution_count": 13,
-   "id": "e09e5da0",
+   "id": "622377ce",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3573,7 +3575,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bc053213",
+   "id": "5297707b",
    "metadata": {
     "editable": true
    },
@@ -3586,7 +3588,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "54acda0c",
+   "id": "0991f00a",
    "metadata": {
     "editable": true
    },
@@ -3610,7 +3612,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1a8ca023",
+   "id": "a2416584",
    "metadata": {
     "editable": true
    },
@@ -3622,7 +3624,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c4bdd5c7",
+   "id": "5327df0c",
    "metadata": {
     "editable": true
    },
@@ -3632,7 +3634,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a5e3c034",
+   "id": "01830ad4",
    "metadata": {
     "editable": true
    },
@@ -3650,7 +3652,7 @@
   {
    "cell_type": "code",
    "execution_count": 14,
-   "id": "601c09dd",
+   "id": "755c701c",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3682,7 +3684,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1b859e3f",
+   "id": "ce5e69cd",
    "metadata": {
     "editable": true
    },
@@ -3692,7 +3694,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b6d9c97a",
+   "id": "be4b95cc",
    "metadata": {
     "editable": true
    },
@@ -3716,7 +3718,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7792e082",
+   "id": "d6f4a2bf",
    "metadata": {
     "editable": true
    },
@@ -3740,7 +3742,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "54bd9e4f",
+   "id": "e3c77a84",
    "metadata": {
     "editable": true
    },
@@ -3752,7 +3754,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bb52b494",
+   "id": "25f7d0e6",
    "metadata": {
     "editable": true
    },
@@ -3762,7 +3764,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4a5b8521",
+   "id": "61551c57",
    "metadata": {
     "editable": true
    },
@@ -3774,7 +3776,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "219427fb",
+   "id": "f146f2be",
    "metadata": {
     "editable": true
    },
@@ -3784,7 +3786,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "76eb5bb9",
+   "id": "be5b7705",
    "metadata": {
     "editable": true
    },
@@ -3796,7 +3798,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6bdaca84",
+   "id": "a272099e",
    "metadata": {
     "editable": true
    },
@@ -3806,7 +3808,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "36804506",
+   "id": "d49b2a1f",
    "metadata": {
     "editable": true
    },
@@ -3818,7 +3820,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3762acb8",
+   "id": "edaa18b7",
    "metadata": {
     "editable": true
    },
@@ -3844,7 +3846,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f8cdee52",
+   "id": "5a55474b",
    "metadata": {
     "editable": true
    },
@@ -3863,7 +3865,7 @@
   {
    "cell_type": "code",
    "execution_count": 15,
-   "id": "a2ce64da",
+   "id": "e769cb08",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3898,7 +3900,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cec40586",
+   "id": "71481521",
    "metadata": {
     "editable": true
    },
@@ -3915,7 +3917,7 @@
   {
    "cell_type": "code",
    "execution_count": 16,
-   "id": "0282cb1e",
+   "id": "1dae3704",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3928,7 +3930,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0794f954",
+   "id": "50fa9582",
    "metadata": {
     "editable": true
    },
@@ -3943,7 +3945,7 @@
   {
    "cell_type": "code",
    "execution_count": 17,
-   "id": "536daaae",
+   "id": "31e11536",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3959,7 +3961,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "219c8925",
+   "id": "98eae1df",
    "metadata": {
     "editable": true
    },
@@ -3972,7 +3974,7 @@
   {
    "cell_type": "code",
    "execution_count": 18,
-   "id": "32587a9b",
+   "id": "c3a3896f",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -3984,7 +3986,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1fc4a519",
+   "id": "8bfa4b3c",
    "metadata": {
     "editable": true
    },
@@ -3996,7 +3998,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "544842d0",
+   "id": "874d02bb",
    "metadata": {
     "editable": true
    },
@@ -4009,7 +4011,7 @@
   {
    "cell_type": "code",
    "execution_count": 19,
-   "id": "7a13a028",
+   "id": "ec7c7f03",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -4048,7 +4050,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c1ed7e36",
+   "id": "7f8c1fb6",
    "metadata": {
     "editable": true
    },
@@ -4066,7 +4068,7 @@
   {
    "cell_type": "code",
    "execution_count": 20,
-   "id": "255b04bf",
+   "id": "cee93dbc",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -4081,7 +4083,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "268fa8b1",
+   "id": "ba1272c4",
    "metadata": {
     "editable": true
    },
@@ -4094,7 +4096,7 @@
   {
    "cell_type": "code",
    "execution_count": 21,
-   "id": "50a04fce",
+   "id": "11ee840c",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -4107,7 +4109,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dd40ea05",
+   "id": "c149cf2e",
    "metadata": {
     "editable": true
    },
@@ -4123,7 +4125,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ea97fd97",
+   "id": "a480bfce",
    "metadata": {
     "editable": true
    },
@@ -4138,7 +4140,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "484207e2",
+   "id": "cec97232",
    "metadata": {
     "editable": true
    },
@@ -4159,7 +4161,7 @@
   {
    "cell_type": "code",
    "execution_count": 22,
-   "id": "03652c41",
+   "id": "825a8612",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -4173,7 +4175,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ed6c943a",
+   "id": "88ff277c",
    "metadata": {
     "editable": true
    },
diff --git a/doc/src/week46/week46.do.txt b/doc/src/week46/week46.do.txt
index d9d160f9b..d3952aae8 100644
--- a/doc/src/week46/week46.do.txt
+++ b/doc/src/week46/week46.do.txt
@@ -8,7 +8,7 @@ DATE: today
 * _Thursday_: Support Vector Machines, discussion of project 3
   * "Video of lecture":"https://youtu.be/F3CkH-opbdY"
 * _Friday_: Support vector machines and start Principal Component Analysis
-
+  * "Video of lecture":"https://youtu.be/BbupEEvMXtg"
 
 !bblock Reading
 Reading recommendations: