Exercise 2.4b
The final part of the hint in this question says:
"Now, if you choose the class of these other vectors carefully, then the classification of the dependent vector will be dictated." The other vectors refers to the set of linearly independent vectors that make up the d+2th vector. What do you mean by class? Do you mean class of vector, (e.g., unit vector), or class based on the PLA algorithm (i.e., +1 or 1)? 
Problem 2.24
When we design the numerical experiment, shall we randomly generate more datasets to determine g_bar(x), E_out, bias, and var?

Re: Problem 2.24
Yes, when computing bias and var numerically you need to generate many data sets. For example, is the average function that results from learning on each of these data sets.
Quote:

Re: Exercises and Problems
Professor  in my version of the text, for 2.14.b, the inequality is:
. It looks like others are using a version of the inequality that is: , which I think makes the problem a little more transparent. I'm wondering if there's a typo in my version? If not, any additional hints on how to treat this version of the inequality would be helpful. 
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