Archive for January, 2009

On homophily

Thursday, January 29th, 2009

From “Birds of a Feather: Homophily in Social Networks” (pdf). “Similarity breeds connection. This principle—the homophily principle—structures network ties of every type, including marriage, friendship, work, advice, support, information transfer, exchange, comembership, and other types of relationship.”

Social networks: creation, evolution, and uses

Wednesday, January 28th, 2009

If you haven’t heard about The Seed Salon, here is your chance – it hosts scientific debates. This week, it features Barabasi and Fowler. “The physicist and the political scientist discuss contagion and the Obama campaign, debate the natural selection of robustness and ask whether society is turning inward.” Few highlights follow:

(more…)

Internet Identity and Conspiracy 101

Tuesday, January 27th, 2009

Recently, I’ve started to work on the problem of sybil attacks in mobile nets, and I came across this old discussion on identities in the Internet. The Snakes of Medusa and Cyberspace: Internet identity subversion.
(more…)

Enabling New Mobile Applications with Location Proofs

Tuesday, January 27th, 2009

Idea of : Any device can request a location proof from the infrastructure when it is within communication range; the recipient device can then transmit the proof obtained from the infrastructure to any application that wishes to verify the device’s location.

Applications: store discounts for loyal customers (frequent visitors), green commuting proof, location-restricted content delivery, reducing fraud on auction websites, and police investigations (alibis producing).

DeviceAnywhere

Friday, January 9th, 2009

I don’t know how it works but it seems to be a nice mobile testbed. Anyone knows more?

“An award-winning, ground-breaking product designed by Mobile Complete, DeviceAnywhere™ provides developers real-time interaction with handsets that are connected to live global networks. Built on Mobile Complete’s innovative device interaction technology, Direct-To-Device™, DeviceAnywhere enables you to connect to and control mobile devices around the world – using just the Internet. Through DeviceAnywhere’s original, non-simulated, real-time platform, you can remotely press buttons, view LCD displays, listen to ringers and tones, and play videos … just as if you were holding the device in your hands!”

On social web: open & privacy-friendly

Thursday, January 8th, 2009

From the Economist: Websites can now let visitors bring along their friends. A NEW button is appearing on some websites. It says “Facebook Connect” and saves visitors from having to fill out yet another tedious registration form, upload another profile picture and memorise another username and password. Instead, visitors can now sign into other sites using their existing identity on Facebook. …The big new idea, says Dave Morin, a Facebook Connect manager, is “dynamic privacy”. It means that, as the social network reaches out across the wider web, users will in theory take their privacy settings with them. Wherever on the web they are, they will be able to choose who among their friends will and won’t see what they are up to. As soon as a user demotes a “friend” from intimate to arm’s-length in his Facebook settings, this will also take effect on other sites.