Monthly Archives: April 2009

Links for 2009 04 30

  • Paper "De-anonymizing Social Networks"
    WOW!
    We show that a third of the users who can be verified to have accounts on both Twitter, a popular microblogging service, and Flickr, an online photo-sharing site, can be re-identified in the anonymous Twitter graph with only a 12% error rate.
    Our de-anonymization algorithm is based purely on the network topology, does not require creation of a large number of dummy "sybil" nodes, is robust to noise and all existing defenses, and works even when the overlap between the target network and the adversary’s auxiliary information is small.

Links for 2009 04 27

  • Google Flu Trends | How does this work?
    Simply based on what people search in Google, Google is able to estimate flu activity up to two weeks faster than traditional flu surveillance systems.

  • Swine flu: Twitter’s power to misinform | Net Effect
    I think it’s only a matter of time before that the next generation of cyber-terrorists – those who are smart about social media, are familiar with modern information flows, and are knowledgeable about human networks – take advantage of the escalating fears over the next epidemic and pollute the networked public sphere with scares that would essentially paralyze the global economy. Often, such tactics would bring much more destruction than the much-feared cyberwar and attacks on physical – rather than human – networks.

Designing Your Reputation System and Designing Social Interfaces

10 practical questions for designing a reputation system. This talk was (partially!) given at the 2008 IA Summit. By Bryce Glass on Slideshare

Designing Social Interfaces – workshop talk given at Web 2.0 Expo

Negativity: not shown, not present

From an old paper of mine, note the message by eBay founder.

In fact, Resnick and Zeckhauser (2002) consider two explanations related to the success of eBay’s feedback system:
(1) “The system may still work, even if it is unreliable or unsound, if its participants think it is working. (…) It is the perception of how the system operates, not the facts, that matters” and
(2) “Even though the system may not work well in the statistical tabulation sense, it may function successfully if it swiftly turns against undesirable sellers (…), and if it imposes costs for a seller to get established.”
They also argue that: “on the other hand, making dissatisfaction more visible might destroy people’s overall faith in eBay as a generally safe marketplace.”

This seems confirmed by a message posted on eBay by its founder in 1996:
“Most people are honest. And they mean well. Some people go out of their way to make things right. I’ve heard great stories about the honesty of people here. But some people are dishonest: or deceptive. This is true here, in the newsgroups, in the classifieds, and right next door. It’s a fact of life. But here, those people can’t hide. We’ll drive them away. Protect others from them. This grand hope depends on your active participation” (Omidyar, 1996).

On eBay, whose goal, after all, is to allow a large number of commercial transactions to happen, it seems that positive feelings and perceptions can create a successful and active community more than a sound Trust Metric and reputation system. This means that the fact that a Trust Metric or reputation system is proved to be attack resistant does not have
an immediate effect on how users perceive it and hence, on how this helps in keeping the community healthy and working.

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Two talks by David Orban in Trento on April 8th: The Open Internet Of Things, and

The SoNet FBK research group is happy to invite you to two talks by David Orban on April 8th in Trento.
The first talk, “The Open Internet Of Things”, will be about OpenSpime. It will be interesting if you are interested in sensors, positioning devices and memory, social, Web 2.0-style services in the real world, green technology, tech applied to the environment, open hardware and software, communications protocols, and future in general.
The second talk, “Preparing Humanity For The Impact Of Accelerating Technological Change”, will talk about the Singularity University, a recent new initiative funded by Nasa, Google and more.
I’ll wait you on April 8th!

First talk: The Open Internet Of Things
8 April 2009 – at 10.00 – Conference Room – Fondazione Bruno Kessler – Povo (TN) (up in the hills, see the map)
If we want the the forthcoming Internet of Things to flourish, the distributed smart sensor networks which take the current infrastructures for granted and base their necessarily autonomous activities on massive data collection, then we have to adopt an open architecture. Only an interoperable approach to the design of the next generation of hardware and software systems is going to be able and leverage the dramatic effects, and express the value to human civilization that the network of tens, or thousands of billions of new objects, the spime network is going to shape. For more info see http://www.openspime.com

Second talk: Preparing Humanity For The Impact Of Accelerating Technological Change
8 April 2009 – at 15.00 – Conference Room – Fondazione Bruno Kessler – Trento (downtown, see the map)
The impact of advanced technologies on our societies is becoming more and more extreme, exposing new tensions in our models of human relationships, learning, and values in policies, politics, and business. While relinquishment has been recommended by some, it appears that the way ahead will be the use of more, not less technology, as billions of people aim to achieve a high quality of life for themselves, and their children. The Singularity University, recently formed on an open, international and interdisciplinary approach employs an advanced curriculum to analyze how the future leaders of enterprise, culture, and science can best prepare to face the serious challenges ahead.

About the speaker:
David Orban is an entrepreneur and visionary. In recognition of his lifetime contribution to exponentially advancing technologies, he has been honored with the position of Advisor and European Lead to the prestigious Singularity University.
He is a Founder and Chief Evangelist of WideTag, Inc., a high technology start-up company providing the infrastructure for an open Internet of Things. David cuts across the limits of deep specialization to contribute to the new renaissance. He explains, “My vision is at the crossroads of technology and society as defined by their co-evolution.” David Orban’s personal motto is, “What is the question I should be asking?” This concept is his vehicle to accelerating cycles of invention and innovation in order to build the new world ahead.

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