Algorithm names are too short

[aydinbuluc]

I found it hard to decipher algorithm names such as lgc vs gc. One would think the former is a special case of the latter but in fact they are completely different, because "c" refers to "clustering" in lgc but to "coloring" in the second. Perhaps longer names with more comments would help?

[ctcyang]

Good idea! Will change it to more descriptive names when I have time.