Is entropy the average information content in a message? Does this overemphasize the link between information theory and thermodynamics? Regards, Casey...
3973
vznuri@...
Oct 1, 2001 4:06 pm
ok, yes, I guess I had heard about benfords law somewhere. will have to keep my eye out for it in my books. here's a nice description that came from a NYT...
3974
Jeff Haferman
jeff_haferman@...
Oct 1, 2001 5:29 pm
More precisely, entropy is the *rate* of transfer of information in a message. In thermodynamics, it describes the amount of thermal energy in a system that...
3975
Zubin Chandran
corezapr@...
Oct 1, 2001 6:54 pm
... VZ, the LSB detection problem is well-known (and well worked on). The newer attacks seem to be wavelet based rather than DCT, FFT, etc. If you want a...
3976
vznuri@...
Oct 1, 2001 7:45 pm
terrorists & identity theft http://www.wired.com/news/conflict/0,2100,47201,00.html fingerprints for payment ID ...
3977
Michiro Nasu
nasukun@...
Oct 1, 2001 9:19 pm
Hello Spinrad! sorry for too late response. i've been absent for these weeks. (no relevance to the sep.11.) we (GS and i) have enjoyed your exercise very much....
3978
vznuri@...
Oct 1, 2001 10:27 pm
(I thought I just posted this msg. yahoo seems to be swallowing some lately. plz disregard other if it shows up) mr. signal processing doctorate student, how...
3979
Francisco Antonio Doria
fadoria2001@...
Oct 1, 2001 11:33 pm
Depends. There are several entropy concepts in dynamical systems theory: topological entropy, metrical antropy and so on. Fractal dimension of a set can be...
3980
vznuri@...
Oct 2, 2001 12:00 am
yes ZC, I just turned up that same link. the problem of false positives is absolutely at the core of steganographic detection. zilch mention of it in the PR...
3981
Zubin Chandran
corezapr@...
Oct 2, 2001 12:22 am
... VZ, I am getting tired of arguing with you, and of your constant childish rebukes when someone finds flaws with your reasoning. I think PF was 100% on the...
3982
vznuri@...
Oct 2, 2001 1:06 am
mr.chandran, msgs with zilch science & comprised solely of personal attacks are not on charter here. I dont care how many Phds you are working on or at what...
3983
Zubin Chandran
corezapr@...
Oct 2, 2001 2:07 am
... VZ, I am only objecting to you using your position as list moderator to abuse basic list etiquette. My posts (and PF's as well) addressed the points in...
3984
Zubin Chandran
corezapr@...
Oct 2, 2001 4:02 am
... More on the topic of randomness in LSBs: I think the paper by Westfeld and Pfitzmann, "Attacks on Steganographic Systems" was mentioned here in passing,...
3985
vznuri@...
Oct 2, 2001 4:34 am
ZC, why should I agree to any of your requests when you agree to none of mine? some more free clues for you, since you didnt get the last batch.. (1) there is...
3986
Greg Mildenhall
assassin@...
Oct 2, 2001 4:57 am
Since some of the protagonists on the stego thread claim that detecting subtle deviations in expected behaviour of data-streams is practical and achievable, I...
3987
vznuri@...
Oct 2, 2001 5:14 am
I posted this last nite but yahoo seems to have eaten it due to maintenance glitch. nice PDF format review. read it for a "real" scientific critique. where is...
3988
Zubin Chandran
corezapr@...
Oct 2, 2001 5:14 am
... VZ, again you are posting whatever blather you please to the list because of your arbitrary rule that anything with (muse) in the title is an acceptable...
3989
Casey Hawthorne
caseyh@...
Oct 2, 2001 5:20 am
Regards, Casey...
3990
Zubin Chandran
corezapr@...
Oct 2, 2001 5:25 am
... Examine the first letters of paragraphs and look at whether they have been capitalized as per proper grammatical rules. This will identify VZ's posts in...
3991
U.Ramakrishna
ramakrsn@...
Oct 2, 2001 10:13 am
Hello, Who ever it is, would you please restrict yourself to technical postings. I would suggest everyone to stop off-topic muse posts(even news-posts? we can...
3992
transrecursion@...
Oct 2, 2001 11:19 am
Surely it is not to difficult to write a program that can attempt to find the rule, given any number sequence ? Say, that they can be compared for...
3993
vznuri@...
Oct 2, 2001 3:52 pm
nice PDF format. read it for a "real" scientific critique. p.s. free clue for CV, it sounds like maybe you read a little Li & Vitanyi, finally, haha. I think...
3994
Michiro Nasu
nasukun@...
Oct 2, 2001 4:22 pm
sorry. my mistake. ... correctly, if we insert odd number of vertices into each edge in G, then all of cycles in G turn to even. when we insert even number of...
3995
vznuri@...
Oct 2, 2001 4:31 pm
nobody seems to have cited neil johnson yet.. he appears to be close to worlds greatest authority on stego. hes got a book from kluwer. ...
3996
Jim McWilliams
jim@...
Oct 2, 2001 5:27 pm
ZC, well put re: LSBs. I guess the heuristic argument that LSBs are important is that systems with only the number of bits in the MSB were found inadequate. I...
3997
Casey Hawthorne
caseyh@...
Oct 2, 2001 5:27 pm
Good Book - "Feynman Lectures on Computation" Some chapter headings: The Theory of Computation Coding and Information Theory Reversible Computation and the...
3998
Jim McWilliams
jim@...
Oct 2, 2001 5:39 pm
ZC has a point here -- just what is your background VZ?? my experience with groups such as TheoryEdge is that the group gains the most when participants inform...
3999
Zubin Chandran
corezapr@...
Oct 2, 2001 6:03 pm
... Ahh, Vlad the Regurgitator is throwing more links at the discussion.. How exactly does Johnson's work support your contention regarding LSBs? You've cited...
4000
Michiro Nasu
nasukun@...
Oct 2, 2001 6:21 pm
Hello Spinrad! We failed to find a reduction from C3 detection to C4 detection. surely C4 is very particular case. now we know that C2m+1 and C6 detection are...
4001
vznuri@...
Oct 2, 2001 6:39 pm
wow.. civil rights re: eavesdropping revoked for only 2 yrs in terrorism bill http://www.wired.com/news/conflict/0,2100,47230,00.html military terrorist...
