adding typos

doc/pub/How2ReadData/html/How2ReadData.html

@@ -140,7 +140,7 @@ MathJax.Hub.Config({
 <center>[2] <b>Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University</b></center>
 <br>
 <p>
-<center><h4>Dec 24, 2019</h4></center> <!-- date -->
+<center><h4>Dec 25, 2019</h4></center> <!-- date -->
 <br>
 
 <h2 id="___sec0">Introduction </h2>
@@ -1167,8 +1167,15 @@ years etc.
 
 <p>
 Finally, another cost function is the Huber cost function used in robust regression.
-It is less sensitive to outliers in data than the squared error cost function.
-A variant for classification is also sometimes used, a quantity we will meet later. 
+
+<p>
+The rationale behind this possible cost function is its reduced
+sensitivity to outliers in the data set. In our discussions on
+dimensionality reduction and normalization of data we will meet other
+ways of dealing with outliers.
+
+<p>
+The Huber cost function is defined as
 $$
 H_{\delta}(a)={\begin{cases}{\frac {1}{2}}{a^{2}}&{\text{for }}|a|\leq \delta ,\\\delta (|a|-{\frac {1}{2}}\delta ),&{\text{otherwise.}}\end{cases}}}.
 $$