update readings

[aaronbloomfield]

From aaronbloomfield#32:

some of them (such as on graphs) need more online sources

A follow-up:

From a not-so-anonymous feedback on 4-20-14:

I find thoroughly understanding the concepts behind the lab (before I start coding) help me in getting my program correct the first (,or second, or third) time around much easier. However, sometime the material on the lecture slides just isn't sufficient. Now then, occasionally you will include links to brief articles (which are usually helpful), but they are not nearly enough information. Couple this with the fact that this class doesn't have a standard textbook to refer to, it shouldn't come as a surprise that many students will become frustrated trying to do these labs. Just recently I tried using the UVA Library system as my secondary source of information (for the Huffman Encoding Lab), and found it to be quite the powerful tool. Any student at uva has access to "virgo", which can link you to online textbooks (and direct you to local libraries that hold hard copies of these books), some of which are dedicated entirely to certain topics, such as huffman encoding/decoding. For example, I stumbled across the book "Introduction to Data Compression", by Khalid Sayood, and found it to be very helpful in completing my lab http://site.ebrary.com/lib/uvalib/docDetail.action?docID=10216746 I suppose the point I am trying to get at here is that as UVA students (and by paying tuition), we are given access to a very powerful tool. I think that it would be very helpful if you would, in addition to your links to wiki articles, include links to relevant online texts (which a student could use to better understand the lab material/concepts, or even pursue further understanding out of interest) in your lab guidelines and on your slides.