From 36c4cd352b10f9cd7ccdee65976700d0c0f3e5f4 Mon Sep 17 00:00:00 2001
From: Morten Hjorth-Jensen <morten.hjorth-jensen@fys.uio.no>
Date: Mon, 23 Oct 2023 07:25:11 +0200
Subject: [PATCH] correcting slides

---
 doc/pub/week43/html/week43-bs.html           |  11 +-
 doc/pub/week43/html/week43-reveal.html       |   4 +-
 doc/pub/week43/html/week43-solarized.html    |   9 +-
 doc/pub/week43/html/week43.html              |   9 +-
 doc/pub/week43/ipynb/ipynb-week43-src.tar.gz | Bin 192 -> 192 bytes
 doc/pub/week43/ipynb/week43.ipynb            | 480 ++++++++++---------
 doc/src/week43/exercisesweek43.ipynb         | 169 -------
 doc/src/week43/week43.do.txt                 |   4 +-
 8 files changed, 266 insertions(+), 420 deletions(-)
 delete mode 100644 doc/src/week43/exercisesweek43.ipynb

diff --git a/doc/pub/week43/html/week43-bs.html b/doc/pub/week43/html/week43-bs.html
index 13f312487..5a12f18c2 100644
--- a/doc/pub/week43/html/week43-bs.html
+++ b/doc/pub/week43/html/week43-bs.html
@@ -49,11 +49,11 @@ doconce format html week43.do.txt --html_style=bootstrap --pygments_html_style=d
                2,
                None,
                'material-for-exercises-week-43-and-week-44'),
-              ('Writing our first neural network code, Testing our code for '
-               'the OR and XOR gates',
+              ('Writing our first neural network code,  testing it  for the OR '
+               'and XOR gates',
                2,
                None,
-               'writing-our-first-neural-network-code-testing-our-code-for-the-or-and-xor-gates'),
+               'writing-our-first-neural-network-code-testing-it-for-the-or-and-xor-gates'),
               ('The AND and XOR Gates', 2, None, 'the-and-and-xor-gates'),
               ('Representing the Data Sets',
                2,
@@ -330,7 +330,7 @@ MathJax.Hub.Config({
      <!-- navigation toc: --> <li><a href="#using-automatic-differentiation" style="font-size: 80%;">Using Automatic differentiation</a></li>
      <!-- navigation toc: --> <li><a href="#back-propagation-and-automatic-differentiation" style="font-size: 80%;">Back propagation and automatic differentiation</a></li>
      <!-- navigation toc: --> <li><a href="#material-for-exercises-week-43-and-week-44" style="font-size: 80%;">Material for exercises week 43 and week 44</a></li>
-     <!-- navigation toc: --> <li><a href="#writing-our-first-neural-network-code-testing-our-code-for-the-or-and-xor-gates" style="font-size: 80%;">Writing our first neural network code, Testing our code for the OR and XOR gates</a></li>
+     <!-- navigation toc: --> <li><a href="#writing-our-first-neural-network-code-testing-it-for-the-or-and-xor-gates" style="font-size: 80%;">Writing our first neural network code,  testing it  for the OR and XOR gates</a></li>
      <!-- navigation toc: --> <li><a href="#the-and-and-xor-gates" style="font-size: 80%;">The AND and XOR Gates</a></li>
      <!-- navigation toc: --> <li><a href="#representing-the-data-sets" style="font-size: 80%;">Representing the Data Sets</a></li>
      <!-- navigation toc: --> <li><a href="#setting-up-the-neural-network" style="font-size: 80%;">Setting up the Neural Network</a></li>
@@ -515,7 +515,7 @@ t
 <h2 id="material-for-exercises-week-43-and-week-44" class="anchor">Material for exercises week 43 and week 44 </h2>
 
 <!-- !split -->
-<h2 id="writing-our-first-neural-network-code-testing-our-code-for-the-or-and-xor-gates" class="anchor">Writing our first neural network code, Testing our code for the OR and XOR gates </h2>
+<h2 id="writing-our-first-neural-network-code-testing-it-for-the-or-and-xor-gates" class="anchor">Writing our first neural network code,  testing it  for the OR and XOR gates </h2>
 
 <p>During week 41 we discussed three different types of gates, the
 so-called XOR, the OR and the AND gates.  In order to develop a code
@@ -779,6 +779,7 @@ plt<span style="color: #666666">.</span>show()
   </div>
 </div>
 
+<p>How do we interpret these results?</p>
 
 <!-- !split -->
 <h2 id="lecture-thursday-october-26" class="anchor">Lecture Thursday October 26 </h2>
diff --git a/doc/pub/week43/html/week43-reveal.html b/doc/pub/week43/html/week43-reveal.html
index 0a82957ca..874befd13 100644
--- a/doc/pub/week43/html/week43-reveal.html
+++ b/doc/pub/week43/html/week43-reveal.html
@@ -269,7 +269,7 @@ t
 </section>
 
 <section>
-<h2 id="writing-our-first-neural-network-code-testing-our-code-for-the-or-and-xor-gates">Writing our first neural network code, Testing our code for the OR and XOR gates </h2>
+<h2 id="writing-our-first-neural-network-code-testing-it-for-the-or-and-xor-gates">Writing our first neural network code,  testing it  for the OR and XOR gates </h2>
 
 <p>During week 41 we discussed three different types of gates, the
 so-called XOR, the OR and the AND gates.  In order to develop a code
@@ -526,6 +526,8 @@ plt.show()
     </div>
   </div>
 </div>
+
+<p>How do we interpret these results?</p>
 </section>
 
 <section>
diff --git a/doc/pub/week43/html/week43-solarized.html b/doc/pub/week43/html/week43-solarized.html
index e93caeb3b..858f43905 100644
--- a/doc/pub/week43/html/week43-solarized.html
+++ b/doc/pub/week43/html/week43-solarized.html
@@ -76,11 +76,11 @@ div.toc p,a {
                2,
                None,
                'material-for-exercises-week-43-and-week-44'),
-              ('Writing our first neural network code, Testing our code for '
-               'the OR and XOR gates',
+              ('Writing our first neural network code,  testing it  for the OR '
+               'and XOR gates',
                2,
                None,
-               'writing-our-first-neural-network-code-testing-our-code-for-the-or-and-xor-gates'),
+               'writing-our-first-neural-network-code-testing-it-for-the-or-and-xor-gates'),
               ('The AND and XOR Gates', 2, None, 'the-and-and-xor-gates'),
               ('Representing the Data Sets',
                2,
@@ -416,7 +416,7 @@ t
 <h2 id="material-for-exercises-week-43-and-week-44">Material for exercises week 43 and week 44 </h2>
 
 <!-- !split --><br><br><br><br><br><br><br><br><br><br>
-<h2 id="writing-our-first-neural-network-code-testing-our-code-for-the-or-and-xor-gates">Writing our first neural network code, Testing our code for the OR and XOR gates </h2>
+<h2 id="writing-our-first-neural-network-code-testing-it-for-the-or-and-xor-gates">Writing our first neural network code,  testing it  for the OR and XOR gates </h2>
 
 <p>During week 41 we discussed three different types of gates, the
 so-called XOR, the OR and the AND gates.  In order to develop a code
@@ -668,6 +668,7 @@ plt.show()
   </div>
 </div>
 
+<p>How do we interpret these results?</p>
 
 <!-- !split --><br><br><br><br><br><br><br><br><br><br>
 <h2 id="lecture-thursday-october-26">Lecture Thursday October 26 </h2>
diff --git a/doc/pub/week43/html/week43.html b/doc/pub/week43/html/week43.html
index c8e585927..4d290c546 100644
--- a/doc/pub/week43/html/week43.html
+++ b/doc/pub/week43/html/week43.html
@@ -153,11 +153,11 @@ div.toc p,a {
                2,
                None,
                'material-for-exercises-week-43-and-week-44'),
-              ('Writing our first neural network code, Testing our code for '
-               'the OR and XOR gates',
+              ('Writing our first neural network code,  testing it  for the OR '
+               'and XOR gates',
                2,
                None,
-               'writing-our-first-neural-network-code-testing-our-code-for-the-or-and-xor-gates'),
+               'writing-our-first-neural-network-code-testing-it-for-the-or-and-xor-gates'),
               ('The AND and XOR Gates', 2, None, 'the-and-and-xor-gates'),
               ('Representing the Data Sets',
                2,
@@ -493,7 +493,7 @@ t
 <h2 id="material-for-exercises-week-43-and-week-44">Material for exercises week 43 and week 44 </h2>
 
 <!-- !split --><br><br><br><br><br><br><br><br><br><br>
-<h2 id="writing-our-first-neural-network-code-testing-our-code-for-the-or-and-xor-gates">Writing our first neural network code, Testing our code for the OR and XOR gates </h2>
+<h2 id="writing-our-first-neural-network-code-testing-it-for-the-or-and-xor-gates">Writing our first neural network code,  testing it  for the OR and XOR gates </h2>
 
 <p>During week 41 we discussed three different types of gates, the
 so-called XOR, the OR and the AND gates.  In order to develop a code
@@ -745,6 +745,7 @@ plt<span style="color: #666666">.</span>show()
   </div>
 </div>
 
+<p>How do we interpret these results?</p>
 
 <!-- !split --><br><br><br><br><br><br><br><br><br><br>
 <h2 id="lecture-thursday-october-26">Lecture Thursday October 26 </h2>
diff --git a/doc/pub/week43/ipynb/ipynb-week43-src.tar.gz b/doc/pub/week43/ipynb/ipynb-week43-src.tar.gz
index 71628489c60ac9c48ff5a1e53250345b4421c7b2..e3ea0bcecfa3b6fa645cb23d199f5c759175c06e 100644
GIT binary patch
delta 122
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zE6Wdi=2zgEf8tn43)_9~Dy=|ihq=}@+z@LPN3!iz4uwWLw!q-ElLkSk9z;<{C$$on
cur>N*L}R1y*UxyK=Xqay0B9w`{Qw9607?)wCIA2c

delta 122
zcmV-=0EPd+0l)zVABzY8j{h~02TyA9I876p0HHBws{qJyC%tsm2{WA1RA*Ec)w{W2
ztSmq5nO}it{)uBHEo}F_tF!{89p+lsa6_zF9Lcs<ITRZ0*aCysP8tNEdJsh+ozzNP
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diff --git a/doc/pub/week43/ipynb/week43.ipynb b/doc/pub/week43/ipynb/week43.ipynb
index bd5c542d3..db8682062 100644
--- a/doc/pub/week43/ipynb/week43.ipynb
+++ b/doc/pub/week43/ipynb/week43.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "897c121c",
+   "id": "944a1ec4",
    "metadata": {
     "editable": true
    },
@@ -14,7 +14,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b3873a8f",
+   "id": "571ef4ca",
    "metadata": {
     "editable": true
    },
@@ -29,7 +29,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "aee364ea",
+   "id": "c53e0e9f",
    "metadata": {
     "editable": true
    },
@@ -73,7 +73,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "342042da",
+   "id": "02ed9bb6",
    "metadata": {
     "editable": true
    },
@@ -87,7 +87,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "95ad710d",
+   "id": "05cfb0c9",
    "metadata": {
     "editable": true
    },
@@ -104,7 +104,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9e99e0e9",
+   "id": "21caf391",
    "metadata": {
     "editable": true
    },
@@ -114,12 +114,12 @@
   },
   {
    "cell_type": "markdown",
-   "id": "86633d2e",
+   "id": "3c9b1e04",
    "metadata": {
     "editable": true
    },
    "source": [
-    "## Writing our first neural network code, Testing our code for the OR and XOR gates\n",
+    "## Writing our first neural network code,  testing it  for the OR and XOR gates\n",
     "\n",
     "During week 41 we discussed three different types of gates, the\n",
     "so-called XOR, the OR and the AND gates.  In order to develop a code\n",
@@ -151,7 +151,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6018d7bf",
+   "id": "4dabb457",
    "metadata": {
     "editable": true
    },
@@ -189,7 +189,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8fee48bd",
+   "id": "a78cff46",
    "metadata": {
     "editable": true
    },
@@ -201,7 +201,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "428e4a4b",
+   "id": "e4c2f9d7",
    "metadata": {
     "editable": true
    },
@@ -216,7 +216,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "683ea756",
+   "id": "103736e3",
    "metadata": {
     "editable": true
    },
@@ -226,7 +226,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c7caa977",
+   "id": "a5e5d384",
    "metadata": {
     "editable": true
    },
@@ -239,7 +239,7 @@
   {
    "cell_type": "code",
    "execution_count": 1,
-   "id": "6ee85cb7",
+   "id": "09d0e5dd",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -317,7 +317,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "85764907",
+   "id": "d9f554db",
    "metadata": {
     "editable": true
    },
@@ -327,7 +327,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "db3ed5cd",
+   "id": "ab802e6b",
    "metadata": {
     "editable": true
    },
@@ -338,7 +338,7 @@
   {
    "cell_type": "code",
    "execution_count": 2,
-   "id": "937403f1",
+   "id": "9231d583",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -406,7 +406,17 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1b026062",
+   "id": "1c0ad443",
+   "metadata": {
+    "editable": true
+   },
+   "source": [
+    "How do we interpret these results?"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "1cea859c",
    "metadata": {
     "editable": true
    },
@@ -416,7 +426,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9be3ae2b",
+   "id": "bbdb3e49",
    "metadata": {
     "editable": true
    },
@@ -445,7 +455,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1510d114",
+   "id": "45d25695",
    "metadata": {
     "editable": true
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@@ -495,7 +505,7 @@
   {
    "cell_type": "code",
    "execution_count": 3,
-   "id": "915e69af",
+   "id": "87c0ee64",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -548,7 +558,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1c70afb0",
+   "id": "4e780f35",
    "metadata": {
     "editable": true
    },
@@ -569,7 +579,7 @@
   {
    "cell_type": "code",
    "execution_count": 4,
-   "id": "fbef33ca",
+   "id": "bb737921",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -607,7 +617,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7262877d",
+   "id": "ffb0a087",
    "metadata": {
     "editable": true
    },
@@ -651,7 +661,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2beeded1",
+   "id": "fed0ab83",
    "metadata": {
     "editable": true
    },
@@ -691,7 +701,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bbe60e1c",
+   "id": "6f3ab464",
    "metadata": {
     "editable": true
    },
@@ -712,7 +722,7 @@
   {
    "cell_type": "code",
    "execution_count": 5,
-   "id": "6666acad",
+   "id": "6745d89e",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -738,7 +748,7 @@
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   {
    "cell_type": "markdown",
-   "id": "2b87c90b",
+   "id": "c06d038e",
    "metadata": {
     "editable": true
    },
@@ -766,7 +776,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c09a8f40",
+   "id": "4f0e93ce",
    "metadata": {
     "editable": true
    },
@@ -803,7 +813,7 @@
   {
    "cell_type": "code",
    "execution_count": 6,
-   "id": "f8989502",
+   "id": "3c39783f",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -849,7 +859,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1ce8b51c",
+   "id": "c956d7fe",
    "metadata": {
     "editable": true
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@@ -880,7 +890,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f01a4ee6",
+   "id": "e939a07d",
    "metadata": {
     "editable": true
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@@ -918,7 +928,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6c3a9934",
+   "id": "ccdee2fd",
    "metadata": {
     "editable": true
    },
@@ -952,7 +962,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f0e24ea9",
+   "id": "1bf8ea1a",
    "metadata": {
     "editable": true
    },
@@ -993,7 +1003,7 @@
   {
    "cell_type": "code",
    "execution_count": 7,
-   "id": "b448afab",
+   "id": "addc476d",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1072,7 +1082,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c6bcee9f",
+   "id": "435d5f8e",
    "metadata": {
     "editable": true
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@@ -1093,7 +1103,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f69c21e6",
+   "id": "4d67793b",
    "metadata": {
     "editable": true
    },
@@ -1107,7 +1117,7 @@
   {
    "cell_type": "code",
    "execution_count": 8,
-   "id": "8ded8844",
+   "id": "e189ad94",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1217,7 +1227,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7ccd70da",
+   "id": "131559a9",
    "metadata": {
     "editable": true
    },
@@ -1236,7 +1246,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
-   "id": "040f0da2",
+   "id": "6014b15e",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1263,7 +1273,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ecee36b1",
+   "id": "a215be5c",
    "metadata": {
     "editable": true
    },
@@ -1277,7 +1287,7 @@
   {
    "cell_type": "code",
    "execution_count": 10,
-   "id": "760daf87",
+   "id": "3c371733",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1308,7 +1318,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "106544f5",
+   "id": "ed44fd1b",
    "metadata": {
     "editable": true
    },
@@ -1319,7 +1329,7 @@
   {
    "cell_type": "code",
    "execution_count": 11,
-   "id": "3097cde9",
+   "id": "38c2057e",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1363,7 +1373,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "02ec50ba",
+   "id": "647e5296",
    "metadata": {
     "editable": true
    },
@@ -1386,7 +1396,7 @@
   {
    "cell_type": "code",
    "execution_count": 12,
-   "id": "b241fe43",
+   "id": "277402f6",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1413,7 +1423,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4e58a0bc",
+   "id": "cfbf38a6",
    "metadata": {
     "editable": true
    },
@@ -1424,7 +1434,7 @@
   {
    "cell_type": "code",
    "execution_count": 13,
-   "id": "bec03fa9",
+   "id": "920c188a",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1469,7 +1479,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "502b0bd8",
+   "id": "97323847",
    "metadata": {
     "editable": true
    },
@@ -1487,7 +1497,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e87dee69",
+   "id": "c2a7c615",
    "metadata": {
     "editable": true
    },
@@ -1522,7 +1532,7 @@
   {
    "cell_type": "code",
    "execution_count": 14,
-   "id": "f7713464",
+   "id": "bba703cc",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1534,7 +1544,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4eeb5fa7",
+   "id": "a4068463",
    "metadata": {
     "editable": true
    },
@@ -1546,7 +1556,7 @@
   {
    "cell_type": "code",
    "execution_count": 15,
-   "id": "d06a6047",
+   "id": "d6bd0dd0",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1559,7 +1569,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f33640ad",
+   "id": "acc51b3f",
    "metadata": {
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@@ -1570,7 +1580,7 @@
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@@ -1583,7 +1593,7 @@
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@@ -1598,7 +1608,7 @@
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@@ -1610,7 +1620,7 @@
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@@ -1622,7 +1632,7 @@
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@@ -1635,7 +1645,7 @@
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@@ -1690,7 +1700,7 @@
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@@ -1719,7 +1729,7 @@
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@@ -1749,7 +1759,7 @@
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@@ -1776,7 +1786,7 @@
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@@ -1818,7 +1828,7 @@
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@@ -1829,7 +1839,7 @@
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@@ -2006,7 +2016,7 @@
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@@ -2034,7 +2044,7 @@
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@@ -2057,7 +2067,7 @@
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@@ -2088,7 +2098,7 @@
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@@ -2120,7 +2130,7 @@
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@@ -2158,7 +2168,7 @@
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@@ -2183,7 +2193,7 @@
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@@ -2195,7 +2205,7 @@
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@@ -2218,7 +2228,7 @@
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@@ -2238,7 +2248,7 @@
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@@ -2260,7 +2270,7 @@
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@@ -2278,7 +2288,7 @@
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@@ -2297,7 +2307,7 @@
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@@ -2309,7 +2319,7 @@
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@@ -2354,7 +2364,7 @@
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@@ -2384,7 +2394,7 @@
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@@ -2411,7 +2421,7 @@
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@@ -2425,7 +2435,7 @@
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@@ -2442,7 +2452,7 @@
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@@ -2458,7 +2468,7 @@
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@@ -2470,7 +2480,7 @@
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@@ -2488,7 +2498,7 @@
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@@ -2509,7 +2519,7 @@
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@@ -2526,7 +2536,7 @@
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@@ -2538,7 +2548,7 @@
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@@ -2549,7 +2559,7 @@
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@@ -2566,7 +2576,7 @@
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@@ -2577,7 +2587,7 @@
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@@ -2593,7 +2603,7 @@
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@@ -2605,7 +2615,7 @@
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@@ -2622,7 +2632,7 @@
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@@ -2634,7 +2644,7 @@
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@@ -2652,7 +2662,7 @@
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@@ -2662,7 +2672,7 @@
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@@ -2674,7 +2684,7 @@
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@@ -2691,7 +2701,7 @@
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@@ -2703,7 +2713,7 @@
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@@ -2714,7 +2724,7 @@
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@@ -2726,7 +2736,7 @@
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@@ -2736,7 +2746,7 @@
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@@ -2756,7 +2766,7 @@
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@@ -2773,7 +2783,7 @@
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@@ -2792,7 +2802,7 @@
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@@ -2804,7 +2814,7 @@
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@@ -2814,7 +2824,7 @@
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@@ -2831,7 +2841,7 @@
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@@ -2841,7 +2851,7 @@
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@@ -2857,7 +2867,7 @@
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@@ -2869,7 +2879,7 @@
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@@ -2881,7 +2891,7 @@
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@@ -2893,7 +2903,7 @@
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@@ -2903,7 +2913,7 @@
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@@ -2915,7 +2925,7 @@
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@@ -2932,7 +2942,7 @@
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@@ -2942,7 +2952,7 @@
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@@ -2954,7 +2964,7 @@
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@@ -2968,7 +2978,7 @@
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@@ -2984,7 +2994,7 @@
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@@ -2996,7 +3006,7 @@
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@@ -3018,7 +3028,7 @@
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@@ -3030,7 +3040,7 @@
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@@ -3053,7 +3063,7 @@
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@@ -3069,7 +3079,7 @@
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@@ -3081,7 +3091,7 @@
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@@ -3105,7 +3115,7 @@
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@@ -3117,7 +3127,7 @@
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@@ -3138,7 +3148,7 @@
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@@ -3150,7 +3160,7 @@
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@@ -3169,7 +3179,7 @@
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@@ -3179,7 +3189,7 @@
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@@ -3193,7 +3203,7 @@
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@@ -3205,7 +3215,7 @@
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@@ -3217,7 +3227,7 @@
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@@ -3234,7 +3244,7 @@
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@@ -3246,7 +3256,7 @@
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@@ -3268,7 +3278,7 @@
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@@ -3283,7 +3293,7 @@
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@@ -3294,7 +3304,7 @@
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-   "id": "c30748bf",
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@@ -3449,7 +3459,7 @@
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@@ -3464,7 +3474,7 @@
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@@ -3633,7 +3643,7 @@
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@@ -3646,7 +3656,7 @@
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@@ -3663,7 +3673,7 @@
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@@ -3679,7 +3689,7 @@
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@@ -3692,7 +3702,7 @@
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@@ -3709,7 +3719,7 @@
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@@ -3721,7 +3731,7 @@
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@@ -3748,7 +3758,7 @@
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@@ -3761,7 +3771,7 @@
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-   "id": "2b6b6798",
+   "id": "0a4c20d1",
    "metadata": {
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     "editable": true
@@ -3935,7 +3945,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ab49a6da",
+   "id": "97450de8",
    "metadata": {
     "editable": true
    },
@@ -3955,7 +3965,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6bdeca94",
+   "id": "89c1f1e5",
    "metadata": {
     "editable": true
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@@ -3970,7 +3980,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "57ba396b",
+   "id": "fa3644af",
    "metadata": {
     "editable": true
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@@ -3984,7 +3994,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d92ef4e0",
+   "id": "107bef62",
    "metadata": {
     "editable": true
    },
@@ -4000,7 +4010,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1c012943",
+   "id": "65796f1d",
    "metadata": {
     "editable": true
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@@ -4010,7 +4020,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "724d20df",
+   "id": "fdb684ca",
    "metadata": {
     "editable": true
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@@ -4032,7 +4042,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "94b9dfac",
+   "id": "405eb53d",
    "metadata": {
     "editable": true
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@@ -4046,7 +4056,7 @@
   {
    "cell_type": "code",
    "execution_count": 27,
-   "id": "d170a306",
+   "id": "a903f1cf",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -4122,7 +4132,7 @@
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   {
    "cell_type": "markdown",
-   "id": "99fabd1d",
+   "id": "f79a730a",
    "metadata": {
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@@ -4134,7 +4144,7 @@
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   {
    "cell_type": "markdown",
-   "id": "5e14cb35",
+   "id": "28015c61",
    "metadata": {
     "editable": true
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@@ -4151,7 +4161,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "83c3bcd7",
+   "id": "54ab04bb",
    "metadata": {
     "editable": true
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@@ -4163,7 +4173,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cf8b0d3d",
+   "id": "9cc20be6",
    "metadata": {
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@@ -4178,7 +4188,7 @@
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   {
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-   "id": "a5f4f278",
+   "id": "7af7511b",
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@@ -4190,7 +4200,7 @@
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   {
    "cell_type": "markdown",
-   "id": "92648ec5",
+   "id": "96856fc2",
    "metadata": {
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@@ -4202,7 +4212,7 @@
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   {
    "cell_type": "markdown",
-   "id": "2e2a66a4",
+   "id": "1cf407bd",
    "metadata": {
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@@ -4214,7 +4224,7 @@
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   {
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-   "id": "f7f2abbd",
+   "id": "493a79a2",
    "metadata": {
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@@ -4224,7 +4234,7 @@
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   {
    "cell_type": "markdown",
-   "id": "4c9502f0",
+   "id": "8b735b17",
    "metadata": {
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@@ -4241,7 +4251,7 @@
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   {
    "cell_type": "markdown",
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+   "id": "39ddedfe",
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@@ -4253,7 +4263,7 @@
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   {
    "cell_type": "markdown",
-   "id": "641acf58",
+   "id": "46bba0f0",
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@@ -4265,7 +4275,7 @@
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   {
    "cell_type": "markdown",
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+   "id": "1ba4c8b3",
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@@ -4275,7 +4285,7 @@
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   {
    "cell_type": "markdown",
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+   "id": "e8faf0e1",
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@@ -4287,7 +4297,7 @@
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   {
    "cell_type": "markdown",
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+   "id": "e4ce498c",
    "metadata": {
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@@ -4298,7 +4308,7 @@
   {
    "cell_type": "code",
    "execution_count": 28,
-   "id": "b5341719",
+   "id": "1d1cb692",
    "metadata": {
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     "editable": true
@@ -4459,7 +4469,7 @@
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   {
    "cell_type": "markdown",
-   "id": "8c87f6bc",
+   "id": "16aa2193",
    "metadata": {
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@@ -4481,7 +4491,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d0ae660a",
+   "id": "b3ef1c2b",
    "metadata": {
     "editable": true
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@@ -4498,7 +4508,7 @@
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   {
    "cell_type": "markdown",
-   "id": "1c8c5181",
+   "id": "0e1c476f",
    "metadata": {
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@@ -4508,7 +4518,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "818ddbe5",
+   "id": "7b2ad33d",
    "metadata": {
     "editable": true
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@@ -4523,7 +4533,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "aada19a1",
+   "id": "1c57f992",
    "metadata": {
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@@ -4533,7 +4543,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f53f7f99",
+   "id": "99e9dc9f",
    "metadata": {
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@@ -4548,7 +4558,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e54cc395",
+   "id": "ecc62734",
    "metadata": {
     "editable": true
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@@ -4559,7 +4569,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f0ec209b",
+   "id": "2d467ec2",
    "metadata": {
     "editable": true
    },
@@ -4579,7 +4589,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "95034a25",
+   "id": "2de58f3a",
    "metadata": {
     "editable": true
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@@ -4591,7 +4601,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1e3051ce",
+   "id": "0182bb77",
    "metadata": {
     "editable": true
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@@ -4628,7 +4638,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b995a2be",
+   "id": "7ef6f3b0",
    "metadata": {
     "editable": true
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@@ -4638,7 +4648,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4d9b7df1",
+   "id": "6414011b",
    "metadata": {
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@@ -4651,7 +4661,7 @@
   {
    "cell_type": "code",
    "execution_count": 29,
-   "id": "0e3caae5",
+   "id": "dc3a8d10",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -4852,7 +4862,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cb73701c",
+   "id": "4b05b79c",
    "metadata": {
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@@ -4869,7 +4879,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "108d340a",
+   "id": "0f1b8d34",
    "metadata": {
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@@ -4886,7 +4896,7 @@
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   {
    "cell_type": "markdown",
-   "id": "a85c040c",
+   "id": "358a4063",
    "metadata": {
     "editable": true
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@@ -4896,7 +4906,7 @@
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   {
    "cell_type": "markdown",
-   "id": "175e56b8",
+   "id": "e4009b2b",
    "metadata": {
     "editable": true
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@@ -4911,7 +4921,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d31b309b",
+   "id": "c5a9ee8a",
    "metadata": {
     "editable": true
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@@ -4925,7 +4935,7 @@
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   {
    "cell_type": "markdown",
-   "id": "f0394fdd",
+   "id": "b300ac7d",
    "metadata": {
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@@ -4938,7 +4948,7 @@
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   {
    "cell_type": "markdown",
-   "id": "f0c55067",
+   "id": "ee3d4dba",
    "metadata": {
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@@ -4958,7 +4968,7 @@
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   {
    "cell_type": "markdown",
-   "id": "552dcd9b",
+   "id": "73ef05ff",
    "metadata": {
     "editable": true
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@@ -4970,7 +4980,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ada00349",
+   "id": "bc7a6597",
    "metadata": {
     "editable": true
    },
@@ -4982,7 +4992,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "75040f68",
+   "id": "a158dec6",
    "metadata": {
     "editable": true
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@@ -4994,7 +5004,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "16226eba",
+   "id": "6cbfa1b1",
    "metadata": {
     "editable": true
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@@ -5004,7 +5014,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7842d4a4",
+   "id": "a3af3492",
    "metadata": {
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@@ -5016,7 +5026,7 @@
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   {
    "cell_type": "markdown",
-   "id": "2c374e89",
+   "id": "ccd61199",
    "metadata": {
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@@ -5028,7 +5038,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "354672e2",
+   "id": "dc36a5cb",
    "metadata": {
     "editable": true
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@@ -5040,7 +5050,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2d35ce46",
+   "id": "a8b26da0",
    "metadata": {
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@@ -5050,7 +5060,7 @@
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   {
    "cell_type": "markdown",
-   "id": "6df646c7",
+   "id": "41406843",
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@@ -5066,7 +5076,7 @@
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   {
    "cell_type": "markdown",
-   "id": "ce91541c",
+   "id": "f45dd83f",
    "metadata": {
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@@ -5076,7 +5086,7 @@
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   {
    "cell_type": "markdown",
-   "id": "a6577c8f",
+   "id": "e30bdb98",
    "metadata": {
     "editable": true
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@@ -5088,7 +5098,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ba90ff13",
+   "id": "f9cdb4e5",
    "metadata": {
     "editable": true
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@@ -5105,7 +5115,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2ffe0121",
+   "id": "16dc73b3",
    "metadata": {
     "editable": true
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@@ -5115,7 +5125,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "92077344",
+   "id": "ee4dbc98",
    "metadata": {
     "editable": true
    },
@@ -5131,7 +5141,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3bb80739",
+   "id": "13748484",
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@@ -5145,7 +5155,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4979bc36",
+   "id": "4b26b938",
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@@ -5164,7 +5174,7 @@
   {
    "cell_type": "code",
    "execution_count": 30,
-   "id": "6168825c",
+   "id": "9e3bba2f",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -5219,7 +5229,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "464d0a4c",
+   "id": "c4fffb7e",
    "metadata": {
     "editable": true
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@@ -5249,7 +5259,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "74c90858",
+   "id": "3ee8799d",
    "metadata": {
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@@ -5278,7 +5288,7 @@
   {
    "cell_type": "code",
    "execution_count": 31,
-   "id": "8d2a34c6",
+   "id": "8a2377ff",
    "metadata": {
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     "editable": true
@@ -5325,7 +5335,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bedb1ae9",
+   "id": "8dbd62e1",
    "metadata": {
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@@ -5351,7 +5361,7 @@
   {
    "cell_type": "code",
    "execution_count": 32,
-   "id": "8d60b88f",
+   "id": "61b77dd3",
    "metadata": {
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     "editable": true
@@ -5585,7 +5595,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e4aa8be8",
+   "id": "41169c76",
    "metadata": {
     "editable": true
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@@ -5597,7 +5607,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4bbc2106",
+   "id": "3bc273de",
    "metadata": {
     "editable": true
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@@ -5609,7 +5619,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "28e06903",
+   "id": "37896dc3",
    "metadata": {
     "editable": true
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@@ -5621,7 +5631,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "60eb86b8",
+   "id": "09477c51",
    "metadata": {
     "editable": true
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@@ -5638,7 +5648,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b99b6383",
+   "id": "93579057",
    "metadata": {
     "editable": true
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@@ -5648,7 +5658,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3e6a45af",
+   "id": "dcbb82f6",
    "metadata": {
     "editable": true
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@@ -5660,7 +5670,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3fc281ef",
+   "id": "f91e973a",
    "metadata": {
     "editable": true
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@@ -5677,7 +5687,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fbc1d1f2",
+   "id": "e13ab50c",
    "metadata": {
     "editable": true
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@@ -5688,7 +5698,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4ac37302",
+   "id": "fca02e71",
    "metadata": {
     "editable": true
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@@ -5708,7 +5718,7 @@
   },
   {
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-   "id": "b732ccc8",
+   "id": "4bb32ee3",
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     "editable": true
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@@ -5718,7 +5728,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0fb20de8",
+   "id": "feea59f2",
    "metadata": {
     "editable": true
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@@ -5744,7 +5754,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dac001ea",
+   "id": "880753aa",
    "metadata": {
     "editable": true
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@@ -5760,7 +5770,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "156924b4",
+   "id": "42a69cb7",
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@@ -5771,7 +5781,7 @@
   {
    "cell_type": "code",
    "execution_count": 33,
-   "id": "f5608d1a",
+   "id": "1b321e14",
    "metadata": {
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     "editable": true
@@ -6002,7 +6012,7 @@
   },
   {
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-   "id": "fc9115c3",
+   "id": "c81c7c8a",
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diff --git a/doc/src/week43/exercisesweek43.ipynb b/doc/src/week43/exercisesweek43.ipynb
deleted file mode 100644
index 31ec7f4c6..000000000
--- a/doc/src/week43/exercisesweek43.ipynb
+++ /dev/null
@@ -1,169 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "markdown",
-   "id": "40653618",
-   "metadata": {
-    "editable": true
-   },
-   "source": [
-    "<!-- HTML file automatically generated from DocOnce source (https://github.com/doconce/doconce/)\n",
-    "doconce format html exercisesweek43.do.txt  -->\n",
-    "<!-- dom:TITLE: Exercises weeks 43 and 44  -->"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "b661b3a0",
-   "metadata": {
-    "editable": true
-   },
-   "source": [
-    "# Exercises weeks 43 and 44 \n",
-    "**October 9-13, 2023**\n",
-    "\n",
-    "Date: **Deadline is Sunday November 5 at midnight**\n",
-    "\n",
-    "You can hand in the exercises from week 43 and week 44 as one exercise and get a total score of two additional points."
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "01487b34",
-   "metadata": {
-    "editable": true
-   },
-   "source": [
-    "# Overarching aims of the exercises weeks 43 and 44\n",
-    "\n",
-    "The aim of the exercises this week and next week is to get started with writing a neural network code\n",
-    "of relevance for project 2. \n",
-    "\n",
-    "During week 41 we discussed three different types of gates, the\n",
-    "so-called XOR, the OR and the AND gates.  In order to develop a code\n",
-    "for neural networks, it can be useful to set up a simpler system with\n",
-    "only two inputs and one output. This can make it easier to debug and\n",
-    "study the feed forward pass and the back propagation part. In the\n",
-    "exercise this and next week, we propose to study this system with just\n",
-    "one hidden layer and two hidden nodes. There is only one output node\n",
-    "and we can choose to use either a simple regression case (fitting a\n",
-    "line) or just a binary classification case with the cross-entropy as\n",
-    "cost function.\n",
-    "\n",
-    "Their inputs and outputs can be\n",
-    "summarized using the following tables, first for the OR gate with\n",
-    "inputs $x_1$ and $x_2$ and outputs $y$:\n",
-    "\n",
-    "<table class=\"dotable\" border=\"1\">\n",
-    "<thead>\n",
-    "<tr><th align=\"center\">$x_1$</th> <th align=\"center\">$x_2$</th> <th align=\"center\">$y$</th> </tr>\n",
-    "</thead>\n",
-    "<tbody>\n",
-    "<tr><td align=\"center\">   0        </td> <td align=\"center\">   0        </td> <td align=\"center\">   0      </td> </tr>\n",
-    "<tr><td align=\"center\">   0        </td> <td align=\"center\">   1        </td> <td align=\"center\">   1      </td> </tr>\n",
-    "<tr><td align=\"center\">   1        </td> <td align=\"center\">   0        </td> <td align=\"center\">   1      </td> </tr>\n",
-    "<tr><td align=\"center\">   1        </td> <td align=\"center\">   1        </td> <td align=\"center\">   1      </td> </tr>\n",
-    "</tbody>\n",
-    "</table>"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "e8f2df30",
-   "metadata": {
-    "editable": true
-   },
-   "source": [
-    "## The AND and XOR Gates\n",
-    "\n",
-    "The AND gate is defined as\n",
-    "\n",
-    "<table class=\"dotable\" border=\"1\">\n",
-    "<thead>\n",
-    "<tr><th align=\"center\">$x_1$</th> <th align=\"center\">$x_2$</th> <th align=\"center\">$y$</th> </tr>\n",
-    "</thead>\n",
-    "<tbody>\n",
-    "<tr><td align=\"center\">   0        </td> <td align=\"center\">   0        </td> <td align=\"center\">   0      </td> </tr>\n",
-    "<tr><td align=\"center\">   0        </td> <td align=\"center\">   1        </td> <td align=\"center\">   0      </td> </tr>\n",
-    "<tr><td align=\"center\">   1        </td> <td align=\"center\">   0        </td> <td align=\"center\">   0      </td> </tr>\n",
-    "<tr><td align=\"center\">   1        </td> <td align=\"center\">   1        </td> <td align=\"center\">   1      </td> </tr>\n",
-    "</tbody>\n",
-    "</table>\n",
-    "\n",
-    "And finally we have the XOR gate\n",
-    "\n",
-    "<table class=\"dotable\" border=\"1\">\n",
-    "<thead>\n",
-    "<tr><th align=\"center\">$x_1$</th> <th align=\"center\">$x_2$</th> <th align=\"center\">$y$</th> </tr>\n",
-    "</thead>\n",
-    "<tbody>\n",
-    "<tr><td align=\"center\">   0        </td> <td align=\"center\">   0        </td> <td align=\"center\">   0      </td> </tr>\n",
-    "<tr><td align=\"center\">   0        </td> <td align=\"center\">   1        </td> <td align=\"center\">   1      </td> </tr>\n",
-    "<tr><td align=\"center\">   1        </td> <td align=\"center\">   0        </td> <td align=\"center\">   1      </td> </tr>\n",
-    "<tr><td align=\"center\">   1        </td> <td align=\"center\">   1        </td> <td align=\"center\">   0      </td> </tr>\n",
-    "</tbody>\n",
-    "</table>"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "a3d25110",
-   "metadata": {
-    "editable": true
-   },
-   "source": [
-    "## Representing the Data Sets\n",
-    "\n",
-    "Our design matrix is defined by the input values $x_1$ and $x_2$. Since we have four possible outputs, our design matrix reads"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "abdf765d",
-   "metadata": {
-    "editable": true
-   },
-   "source": [
-    "$$\n",
-    "\\boldsymbol{X}=\\begin{bmatrix} 0 & 0 \\\\\n",
-    "                       0 & 1 \\\\\n",
-    "\t\t       1 & 0 \\\\\n",
-    "\t\t       1 & 1 \\end{bmatrix},\n",
-    "$$"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "684ff136",
-   "metadata": {
-    "editable": true
-   },
-   "source": [
-    "while the vector of outputs is $\\boldsymbol{y}^T=[0,1,1,0]$ for the XOR gate, $\\boldsymbol{y}^T=[0,0,0,1]$ for the AND gate and $\\boldsymbol{y}^T=[0,1,1,1]$ for the OR gate.\n",
-    "\n",
-    "Your tasks here are\n",
-    "\n",
-    "1. Set up the design matrix with the inputs as discussed above and a vector containing the output, the so-called targets. Note that the design matrix is the same for all gates. You need just to define different outputs.\n",
-    "\n",
-    "2. Construct a neural network with only one hidden layer and two hidden nodes using the Sigmoid function as activation function.\n",
-    "\n",
-    "3. Set up the output layer with only one output node and use again the Sigmoid function as activation function for the output.\n",
-    "\n",
-    "4. Initialize the weights and biases and perform a feed forward pass and compare the outputs with the targets.\n",
-    "\n",
-    "5. Set up the cost function (cross entropy for classification of binary cases).\n",
-    "\n",
-    "6. Calculate the gradients needed for the back propagation part.\n",
-    "\n",
-    "7. Use the gradients to train the network in the back propagation part. Think of using automatic differentiation.\n",
-    "\n",
-    "8. Train the network and study your results and compare with results obtained either with **scikit-learn** or **TensorFlow**.\n",
-    "\n",
-    "Everything you develop here can be used directly into the code for the project."
-   ]
-  }
- ],
- "metadata": {},
- "nbformat": 4,
- "nbformat_minor": 5
-}
diff --git a/doc/src/week43/week43.do.txt b/doc/src/week43/week43.do.txt
index 06079e6d4..5bf4097b6 100644
--- a/doc/src/week43/week43.do.txt
+++ b/doc/src/week43/week43.do.txt
@@ -46,7 +46,7 @@ o Slides 12-44 at URL":http://cs231n.stanford.edu/slides/2017/cs231n_2017_lectur
 ===== Material for exercises week 43 and week 44 =====
 
 !split
-===== Writing our first neural network code, Testing our code for the OR and XOR gates =====
+===== Writing our first neural network code,  testing it  for the OR and XOR gates =====
 
 During week 41 we discussed three different types of gates, the
 so-called XOR, the OR and the AND gates.  In order to develop a code
@@ -252,7 +252,7 @@ plt.show()
 
 !ec
 
-
+How do we interpret these results?