network branching, netsci0821 Dec 2008 in
I'm really torn by the number of great talks on today. There are three
parallel sessions, and for each time slot I want to be in at least two
places at once. I'm going to try to pick out talks that have some
relation to online social networks, community detection and scientific
networks, but some of the talks on the theory of clustering are
conflicting directly with some use cases of looking at some online
social networks. Ahh, what a dilemma.
The opening talk of this session was from Stwphen Uzzo talking about the
The next talk was by M.C Gonzales looking at the network of travel
patterns. This was the paper that made the cover of Nature.
The big question is trying to find out what the travel patterns of
people are. Thhe big problem is that getting data is apparently quite
The solution is to follow mobile phone signals, following 10^5 people over
10^6 locations over six months.
I'm looking at the movie of their data, and it is clear that many people
don't move very much, and other people move a lot. Of course one wants
to know some information about the people to see what effect like age,
wealth and occupation will have on these results. Again I'm looking for
There is a nice graph showing corellation over time, it is hugly spiked
on 24 hours. Not surprising, but a good reality check on the data.
I'm going to head to one of the other sessions after this talk.
This talk, though, is very nice. Once again there is evedence that our
behaviour is depressingly regular. Also the longer a journey the more likely
that a journey is going to be linear.