adding typos

doc/pub/How2ReadData/ipynb/How2ReadData.ipynb

@@ -10,7 +10,7 @@
     "<!-- Author: -->  \n",
     "**Morten Hjorth-Jensen**, Department of Physics, University of Oslo and Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University\n",
     "\n",
-    "Date: **Dec 24, 2019**\n",
+    "Date: **Dec 25, 2019**\n",
     "\n",
     "Copyright 1999-2019, Morten Hjorth-Jensen. Released under CC Attribution-NonCommercial 4.0 license\n",
     "\n",
@@ -1458,8 +1458,13 @@
     "\n",
     "\n",
     "Finally, another cost function is the Huber cost function used in robust regression.\n",
-    "It is less sensitive to outliers in data than the squared error cost function.\n",
-    "A variant for classification is also sometimes used, a quantity we will meet later."
+    "\n",
+    "The rationale behind this possible cost function is its reduced\n",
+    "sensitivity to outliers in the data set. In our discussions on\n",
+    "dimensionality reduction and normalization of data we will meet other\n",
+    "ways of dealing with outliers.\n",
+    "\n",
+    "The Huber cost function is defined as"
    ]
   },
   {