<p>I have some questions related to No Free Lunch theorem, which is also discussed in machine learning. I am trying to understand the theorem in the setting of optimizing cost functions. I posted it on math.se <a href="https://math.stackexchange.com/questions/107700/how-shall-i-understand-this-simple-example-of-no-free-lunch-theorem">here</a> and <a href="https://math.stackexchange.com/questions/107088/understanding-no-free-lunch-theorem">here</a>, but from my experience I have the feeling that few people there know about my questions. So I wonder if I can post them here to try some luck (not necessarily migrate but keep them at math.se, since some people just visit there and don't come here)? Or do you have some other suggestions?</p>

<p>Thanks and regards! </p>
