-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 25/03/15 16:06, Anonymous Kyoto wrote: > Dear Karsten,
Hi, > I am not sure whether it is right to ask you some questions about > the Tor metrics via personal email like this, or should I ask > through Tor-talk mailing list. So please forgive, and tell me if I > should ask you via the public mailing list. Well, since you asked, let's move this discussion to tor-talk@. > ①At the footer of the paper :"Measuring the Tor Network, Evaluation > of Client requests to the Directories". link > <https://research.torproject.org/techreports/directory-requests-2009-06-25.pdf>, > > you wrote that "*This report is mostly superseded by report 2010-10-001. *" > > Is it a mistake because I could only find the Report 2010-11-001 > with the title: "Privacy-preserving ways to estimate the number of > Tor users" instead of "*report 2010-10-001*" Oops, you're right. Too many ones and zeros. Fixed. > ②What do you think "when will be the appropriate time for > introducing the counting-cell approach"? Because the proposal has > been there for almost 5 years, but still has not been implemented. Nobody is actively working on it, AFAIK. I don't expect it to happen. > ③Is it correct to separately estimate and then take the sum of both > "new or returning users" and "recurring users", because as far as I > am aware to become a "recurring user", a user needs to be a "new > user" at first? > > By summing up the two values, do you mean that the number of daily > users consists of "new or returning users" which are those newly > joining users, and "recurring users" which are those users keep > using Tor since the days before? If it is the case, then please > pass this question. We stopped distinguishing the two user groups. Please take a look at this more recent report: https://research.torproject.org/techreports/counting-daily-bridge-users-2012-10-24.pdf > ④In the paper, you wrote:"Our current approach for estimating > (recurring) daily users is based on the fact that every client > needs to refresh its network information *every few hours* in order > to make indistinguishable path selection decisions." > > So my question is that: "why *every few hours* but not *every one > hour*? because to the best of my knowledge, Tor directory > authorities publish a new consensus every one hour, and all clients > has to follow this part in the "Tor directory protocol" > >> *Clients try to have a live consensus network-status document at >> all times.* > > * A network-status document is "live" if the time in its > valid-until field * > > * has not passed. * A consensus is *fresh* for one hour but *valid* for three hours. Look at these three fields in the most recent consensus: valid-after 2015-03-26 10:00:00 fresh-until 2015-03-26 11:00:00 valid-until 2015-03-26 13:00:00 > Thank you so much for reading my email, I know that you are very > busy, so I would be really grateful if you can just give me a short > answer or even a hint where I can find the correct answers. Questions are fine. And in this case they led to fixing a broken reference, so thanks for asking! All the best, Karsten -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org iQEcBAEBAgAGBQJVE+P5AAoJEJD5dJfVqbCr/P8H/28+iAo5nlkBvbQSQw6H2s5X DM3H+xwC8HJhpagB+u4D8XrrP19Oqk56lRT4Tkgjre1saX2GlVpUwIjNRuTZkUjn McOIyCSVHW8lSenB62JP/tQXnuT7b0TpzfKrOAqPK/mH18xFY4UzRlZqwKXr9zpz ThoUpDutvd9qDwEVihcN95FXW3tgEqtVU9AcBUVm1Hoht2PPMNcLHNlkHs3A/mjr y1vaojPFawy/kijIcLF0ib59EE/JNrmh7LlXOIQkDeFO7yAYirSLBZtyG3Job63w tWn7fxw47uVv1JXI7+GlRfOfPJm0BU9wnGQToSGef7PkMsfWjCDB45TFuaJhNTE= =DdWA -----END PGP SIGNATURE----- -- tor-talk mailing list - tor-talk@lists.torproject.org To unsubscribe or change other settings go to https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk
