tag:blogger.com,1999:blog-38110412024-09-24T23:16:55.902+01:00Posts on collaborative, mobile and reputation-enabled media.Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.comBlogger35125tag:blogger.com,1999:blog-3811041.post-14643754358720812612008-05-09T18:49:00.000+01:002008-05-09T18:50:28.549+01:00

IFIPTM 2008 Call for Participation ---------------------------------------- Joint iTrust and PST Conferences on Privacy, Trust Management and Security June 18-20, Trondheim, Norway http://www.ntnu.no/videre/konferanse/IFIPTM08/index.html The registration is now open. Conference Program: http://www.ntnu.no/videre/konferanse/IFIPTM08/program.html Registration: http://www.ntnu.no/videre

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-39879988945018525772008-04-23T15:34:00.002+01:002008-04-23T15:35:18.676+01:00

Found this by chance: Social Capital Gateway is a nice resource on the subject by PhD student Fabio Sabatini.

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-6144820938329292232008-03-28T18:21:00.004+00:002008-03-28T19:06:06.292+00:00

With my head buried in paperwork in the last week, I'm probably one of the last to find out, but file-sharing site torrentspy.com has been ordered to close shop.For me, this is sad news indeed. The corporate motion picture muscle in the US was too burly for the guys at torrentspy, and even after hundreds of thousands of $ worth of legal battle, it was too much for one small company, and a final

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-60329895471618804712008-03-28T15:17:00.002+00:002008-03-28T15:20:33.195+00:00

I came across Alex Bunardzic's blog on Online Identity and reading it gave me a new perspective on online reputation, and that is state. Here's a brief brain dump (if there is interest and/or further mulling over this, I will expand on this post)Trust, reputation identity = someone's collection of attributes... the Need to remember an object or person's history and attributes that may change over

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-5931158025013579652008-03-27T23:14:00.003+00:002008-03-27T23:17:32.158+00:00

I'll be reviewing research papers on trust and reputation mechanisms for mobile systems. This is for the Workshop on Trust in Mobile Environments. Looking forward to this as it's one of those areas that is full of creative output at the moment.

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-38616887284549378562008-03-25T13:05:00.003+00:002008-03-25T13:41:39.498+00:00

I answered a question on "What is a mobile social network" on a LinkedIn. My response is copied below, but visit the original post for other replies. Hi Paul, Yours is a timely post, and I think your comment spans two broad issues: user experience in a mobile app, and adding a mobility dimension to social networking. It is getting so much easier now to develop apps for mobile

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com1tag:blogger.com,1999:blog-3811041.post-67787004258448549962008-03-24T01:13:00.002+00:002008-03-24T11:12:51.855+00:00

This was a paper I co-wrote with a bunch of other contributors working in the trust/reputation and security space: "Reputation-based systems: a security analysis" (PDF). It is a position paper on security issues in reputation systems.A nice thing that we did in this paper was that we identified concrete use cases for reputation systems to frame our discussions, rather than talking in general but

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com2tag:blogger.com,1999:blog-3811041.post-11972042906269607422008-03-24T00:30:00.001+00:002008-03-24T00:30:00.352+00:00

Sometime mid last year I blogged very briefly about my discovery of Flock. I said I would write more about it, but as with all great products that turn into indespensable tools, it merged into my background of online interaction, transparently holding up my silver platter of social network goodies right there in my browser.Not surprisingly, this year, they are winner of Best in Community at

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-35398450310242487502007-08-15T08:48:00.001+01:002007-08-15T08:48:41.861+01:00

Best jQuery manual I've seen so far: Visual jQuery, by Yehuda Katz. Nice work.Blogged with Flock

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com2tag:blogger.com,1999:blog-3811041.post-50709615889875004312007-08-06T17:50:00.001+01:002007-08-07T11:15:56.199+01:00

It looks like social networks is quickly picking up pace on the mobile side of things as we read more news about this space, although I think the supporting infrastructure still has some catching up to do.What's clear is that short and simple messages are the most effective for the mobile user, either on the upload or download. This is due to the limitations of the device, the user's available

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com1tag:blogger.com,1999:blog-3811041.post-13278679186365857992007-07-27T12:32:00.001+01:002007-07-27T12:33:33.599+01:00

Who needs Photoshop when you have this: www.picnik.com.Alright, it's not a Photoshop killer but it's all you need really for basic photo manipulation.I'm just impressed with how slick the user interface is.Blogged with Flock

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-56607788591378928132007-07-27T11:28:00.001+01:002007-07-27T11:28:49.332+01:00

In "SOA + RIA + OSS = Web 2.0" (stumbled upon it in delicious), Adam Michelson makes some interesting observations on what the next Net apps may look like once the idea of Web2.0 matures and goes beyond it's current buzzword phase.Web2.0 is today's lip candy, but a lot of people who use this term to refer to its visual or interactive side of the Web2.0 architecture. We see a parallel in the use

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-20382553095218617912007-07-25T23:53:00.001+01:002007-07-25T23:54:57.682+01:00

I realise that Doodle has been around for a while but having recently had the chance to use it, I can see now why it is such a brilliant little thing. All it does is polls. That's it. Plain and simple. And it does it well, without needing any fancy bells and whistles.The interface is based on a simple grid and the results are shown as poll totals for each option at the bottom.A poll, as a

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com1tag:blogger.com,1999:blog-3811041.post-78953982412932286572007-07-23T23:55:00.001+01:002007-07-23T23:55:36.413+01:00

I've just spent a few minutes downloading and trying out the Flock browser and within that short space of time I have to say that initial impressions are good. Flock will particularly suite Web 2.0 savvy users as it has all the social networking tools built right into the browser making the user experience of doing things like blogging, sharing media and online bookmarking that much slicker due

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com3tag:blogger.com,1999:blog-3811041.post-47170180585100537772007-06-12T11:07:00.000+01:002007-06-12T12:08:39.789+01:00

Although I have researched, wrote and talked to people extensively (but not enough!) about trust and reputation, I have always assumed that within whatever model that is being discussed, there is some kind of effective, secure and convenient method of identifying an entity in the network. It is only recently that I started to look beneath the surface of the topic of identity and it has made me

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com3tag:blogger.com,1999:blog-3811041.post-52519930628765048062007-06-08T16:19:00.000+01:002007-06-12T11:03:56.602+01:00

This is old but the topic is probably is as current as ever. It is a video of Dick Hardt's (founder of Sxip) presentation at OSCON 2005. There are two things that are great about this presentation: 1) The idea of Identity 2.0, and 2) Dick's presentation style, which is extremely effective.Go see it.

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-18817374816145566402007-06-03T09:33:00.001+01:002009-10-15T14:10:04.354+01:00

A copy of my thesis titled "A framework for decentralised trust reasoning" is now available at scribd.com: http://www.scribd.com/doc/21119047/A-Framework-for-Decentralised-Trust-Reasoning-PhD-Thesis-University-of-London.Also embedded here for your convenience :)A Framework for Decentralised Trust Reasoning (PhD Thesis, University of London)

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com2tag:blogger.com,1999:blog-3811041.post-72541598288981559942007-06-03T09:29:00.000+01:002007-06-03T09:33:27.680+01:00

A lot of work and thought has been going on in the background while this blog has been stagnant for a very long while. So, it is time to dust it off and revive it.The upcoming posts will include the same subject matter of trust and reputation, but this time I will be including also posts on related technologies and real world stuff (enough talk... more action this time ;)Look forward to your

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-48453018543304147252007-06-03T08:41:00.000+01:002007-06-12T11:02:16.747+01:00

I'll be attending the European e-Identity Conference on 11 June, and also giving a short talk on the kinds of questions to ask when assessing threats to a reputation system. I've talked and written about identities before but this is the first time I'm attending a forum on one, so should be interesting.If you're going to be there, give us a shout for a chat.[Update]Unfortunately, due to

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-1120667718339185232005-07-06T17:35:00.000+01:002006-10-15T00:53:54.535+01:00

Good overview of the philosophical issues of trust, prisoner's dilemma and a Flash PD game!BBC - Radio 4 - Reith Lectures 2002 - A Question Of Trust

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com2tag:blogger.com,1999:blog-3811041.post-1118352573629171842005-06-09T22:29:00.000+01:002006-10-15T00:53:54.472+01:00

Was thinking of doing this myself but someone beat me to it. Outfoxed is a Firefox pluging that tags Google search results with recommendations from your own social network of trusted recommenders. I've not tested it but it looks well made with promising results. Interesting theory sections on the site too.

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-1118351902748356472005-06-09T22:18:00.000+01:002006-10-15T00:53:54.411+01:00

I'm sure there's awareness of this but I've not seen it explicitly written down anywhere... Trust and reputation is distinct but closely coupled. A lot of computational trust/reputation models include aspects of both but I've yet to see one which tries to separate the two. Trust is implicit in actions taken by an agent. The management of trust is thus the management of policies regarding

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-1102593678186783662004-12-09T13:01:00.000+00:002006-10-15T00:53:54.348+01:00

This came across me: an interesting, and funny, letter - Benjamin Franklin on Recommendations! (PNG image, 2MB) Thank you to Victor S. Grishchenko.

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-1099280239970652302004-11-01T03:37:00.000+00:002006-10-15T00:53:54.283+01:00

"When is reputation bad?". Ely, Fudenberg and Levine discusses a scenario, in a paper of the same title, where the presence of a reputation system may invoke bad behaviour in good players in order to maintain a good reputation. Framing their work within game theory, the authors describe a class of games where: The key properties are that participation is optional for the short-run players, and

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0tag:blogger.com,1999:blog-3811041.post-1099010871090044722004-10-29T02:47:00.000+01:002006-10-15T00:53:54.221+01:00

I came across an old (July 2002) article by Annalee Newitz in Alternet ("Reputation System"). It throws light on an interesting property of reputation systems, that unpopular community members are too quickly sidelined. And: Sometimes we need to listen to people who have bad reputations. Often they are the critics, the people with a talent for seeing flaws and problems none of us wants to face.

Farez Rahman, Redkey Digitalhttp://www.blogger.com/profile/10571980328614273853noreply@blogger.com0