Two Technical Lectures

I try to watch a technical lecture or two every weekend, this week I actually stumbled upon two good lectures.

http://videolectures.net/is04_munro_sds/

About succinct data structure, … how to index stuff without using much memory, … in other words, … compressing trees.

http://videolectures.net/solomon_langford_fenna/

Spatial data structures for fast and exact nearest neighbor queries, in high dimensional spaces. I was originally interested in special data structures men ayam el physics engine wel collision detection in games, but they can also be used to speed-up some data clustering algorithms.