Re: [tor-dev] moved from [Tor-censorship-events] Improving the censorship event detector.

["l.m" <ter.one.leeboi@xxxxxxxx>]

Hi Joss,

Thank you for the fine paper. I look forward to reading it. Karsten would be keen on it too (and maybe also your offer) if you haven't already forwarded it to them. My interest in fixing it is (mostly) recreational. I have some thoughts on how to proceed, but I'm not a representative of tor project.

Regards
--leeroy

> Hi,
>
> These are well identified issues. We've been working here on a way to
> improve the current filtering detection approach, and several of the
> points above are things that we're actively hoping to work into our
> approach. Differentiating 'filtering' from 'other events that affect Tor
> usage' is tricky, and will most likely have to rely on other
> measurements from outside Tor. We're currently looking at ways to
> construct models of 'normal' behaviour in a way that incorporates
> multiple sources of data.
>
> We have a paper up on arXiv that might be of interest. I'd be interested
> to be in touch with anyone who's actively working on this. (We have
> code, and would be very happy to work on getting it into production.)
> I've shared the paper with a few people directly, but not here on the
> list.  
>
> arXiv link: http://arxiv.org/abs/1507.05819
>
> We were looking at any anomalies, not only pure Tor-based filtering
> events. For the broader analysis, significant shifts in Tor usage are
> very interesting. It's therefore useful to detect a range of unusual
> behaviours occurring around Tor, and have a set of criteria within that
> to allow differentiating 'hard' filtering events from softer anomalies
> occurring due to other factors.
>
> Joss
> -- 
> Dr. Joss Wright | Research Fellow 
> Oxford Internet Institute, University of Oxford
> http://www.oii.ox.ac.uk/people/?id=176
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