## Saturday, October 31, 2009

### Why $\textstyle l_2$ norm?

Recent progress in signal processing theory has generated a renewed interest in the effectiveness of using the $\textstyle l_1$ norm. It is interesting to note that, for example, in sparse signal recovery one can do a more accurate signal reconstruction minimizing the $\textstyle l_1$ norm.

The reason I have been thinking about $\textstyle l_1$ norm is because it apparently looks more useful for a portion of my current research. Maybe over a hundred years ago, or so, whenever mathematicians started thinking about norms $\textstyle l_2$ won, but current research trends show that $\textstyle l_1$ norm is very handy for a number of practical purposes.

## Friday, October 23, 2009

I am now part of a reading group on convex optimization. We are going through the amazing optimization book by Professor Boyd.

## Tuesday, October 6, 2009

### Getting busy...

This is only the second week of the fall quarter, and things have already started to pick up. I was expecting that anyways, and now that it is here, might as well embrace it. Although, there is some reluctance to accepting the busyness, not really sure why because I just got out of college a few months ago, maybe because my feeling of being 'out of school', rather then 'being in school', has not subsided as much as I thought.