Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.compression > #1220
| From | LawCounsels@aol.com |
|---|---|
| Newsgroups | comp.compression |
| Subject | Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles |
| Date | 2012-04-10 02:29 -0700 |
| Organization | http://groups.google.com |
| Message-ID | <32016146.1695.1334050146969.JavaMail.geo-discussion-forums@vbex14> (permalink) |
| References | (4 earlier) <30572244.769.1333870880706.JavaMail.geo-discussion-forums@vbvd13> <7c4de374-7475-4a05-bd99-aaa1a6311b0b@h4g2000pbe.googlegroups.com> <24603421.783.1333951092279.JavaMail.geo-discussion-forums@vbhy1> <7a3f0e0d-48e5-4930-8a95-8691f26b3402@s10g2000pbc.googlegroups.com> <66b8e0fb-8fa9-4407-9dad-4db79bf02f26@p6g2000yqi.googlegroups.com> |
On Monday, 9 April 2012 17:03:04 UTC+1, biject wrote: > On Apr 9, 5:19 am, James Dow Allen <jdallen2...@yahoo.com> wrote: > > On Apr 9, 12:58 pm, lawcouns...@gmail.com wrote: > > > > > a source with probability of producing an 'a' symbol 25% of time > > > a 'b' symbol 25% of times a 'c' symbol 50% of times > > > > Allow me to recommend the optimal Huffman code: > > c - 0 > > a - 10 > > b - 11 > > This can be improved, though only slightly, using details > > you've omitted from your summary. > > > > This was so trivial, I'll discount it down to, say $950. > > > > If this is unsatisfactory, I'll withdraw from the contest. > > Even paid at minimum wage I'm afraid it would take significant > > funds (payable in advance, please!) just to elicit a > > proper problem statement from you. > > > > I don't have PayPal. Contact me for instructions on how > > to pay the $950. :-) > > > > James > > Lets see c is .5 * 1 = .5 b = .25*2 = .5 c = .25*2 = .5 > see thats .5 + .5 + .5 = 1.5 for the average sequence while > if you encode each with 1.5849625 you save about .0849625 which > is more than the .08 It appears your in the money. I have a > hunch that there still is something missing in which case I would > not count on the money yet. > > First of all does he want at least .08 bits saved in every case > or just the average case. If its the average case you could be > on the right track. If its every case then since you write only > whole numbers of bits the .08 savings gets a little harder. It > would be nice if the guy decides you haven't won just what does > he want. I have read it several times and yet I do not think its > clear enough to tackle without him saying oh I meant this and not > that. > > Assuming he doesn't declare you the winner > 1) is the savings an average things or does each file have to be less. > 2) how do you measure the savings is it .08 from a 1.5849625 per > symbol > or is it .08 less then 1.5 > 3) not sure why you say source C = .5 while A and B = .25 the > fact is even if the source is A = B = C = 1/3 for short files > if you run the sources enough times and created a 100 files each > you still could get the same set of 100 files for both cases. > So you test set up is not valid. There is nothing magical about > your source. Except if I know its a fixed IID souce from say 2 or > 3 different models as you create more files. You can with increasing > probability determine which one it most likely is. But you can't be > 100% certain which one it is unless you do an ever increasing number > of file. > > > David A. Scott > -- > My Crypto code > http://bijective.dogma.net/crypto/scott19u.zip > http://www.jim.com/jamesd/Kong/scott19u.zip old version > My Compression code http://bijective.dogma.net/ > **TO EMAIL ME drop the roman "five" ** > Disclaimer:I am in no way responsible for any of the statements > made in the above text. For all I know I might be drugged. > As a famous person once said "any cryptograhic > system is only as strong as its weakest link" THE COMPLETE SPECIFICATIONS : ============================= 1. generates a number eg 1,000 of such sequences ( each sequence composed of ternary symbols 'a' 'b' 'c' , when # of 'c' = # of 'b' + 2 Then sequence ENDS & next sequences begins ) using a source producing symbol 'a' 25% of times symbol 'b' 25% of times symbol 'c' 50% of times ) .... call the total # of symbols in these 1,000 sequences N . NOTE : among these eg 1,000 sequences the # of 'a' is invariable near = the # of 'b' & the # of 'c' is invariable near = 2 * the # of 'b' THUS the probability model here is 25% : 25% : 50% 2. compresses these eg 1,000 generated sequences using your .exe , & must decode back to the same 1,000 sequences 3. IF you compressed file bitslength =< 1.5 * N - ( 0.08 * N ) THEN YOU WIN THE REWARDS ! ie if your .exe saves 'on average' 0.08 bit each sequences you WON ( needs not be invariable every time on every conceivable file ! ) , but note the original # of sequences is here taken to be of bitslength N * 1.5 bits long ( as originally 'explicit' stated to be 1.5 * N bits long , NOT 1.5849625 * N bits long ) 4. there is no restrictions on memory storage requirements , you may even show your .exe works on 'research network supercomputer cluster' , BUT processing must complete within a day
Back to comp.compression | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-03-31 10:32 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Thomas Richter <thor@math.tu-berlin.de> - 2012-04-03 11:32 +0200
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles James Dow Allen <jdallen2000@yahoo.com> - 2012-04-03 09:07 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-06 01:24 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-08 00:41 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles James Dow Allen <jdallen2000@yahoo.com> - 2012-04-08 04:25 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-08 22:58 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles James Dow Allen <jdallen2000@yahoo.com> - 2012-04-09 04:19 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles biject <biject.bwts@gmail.com> - 2012-04-09 09:03 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-10 02:29 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles James Dow Allen <jdallen2000@yahoo.com> - 2012-04-10 05:43 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-10 06:39 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-10 06:51 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-10 07:29 -0700
I knew I was going to dislike New Google Groups! James Dow Allen <jdallen2000@yahoo.com> - 2012-04-10 09:03 -0700
Re: I knew I was going to dislike New Google Groups! LawCounsels <lawcounsels@gmail.com> - 2012-04-10 09:56 -0700
Re: I knew I was going to dislike New Google Groups! James Dow Allen <jdallen2000@yahoo.com> - 2012-04-10 10:34 -0700
Re: I knew I was going to dislike New Google Groups! lawcounsels@gmail.com - 2012-04-10 10:54 -0700
Re: I knew I was going to dislike New Google Groups! James Dow Allen <jdallen2000@yahoo.com> - 2012-04-11 13:16 -0700
Re: I knew I was going to dislike New Google Groups! LawCounsels <lawcounsels@gmail.com> - 2012-04-12 03:10 -0700
Re: I knew I was going to dislike New Google Groups! LawCounsels <lawcounsels@gmail.com> - 2012-04-12 03:57 -0700
Re: I knew I was going to dislike New Google Groups! biject <biject.bwts@gmail.com> - 2012-04-12 08:38 -0700
Re: I knew I was going to dislike New Google Groups! LawCounsels <lawcounsels@gmail.com> - 2012-04-13 02:34 -0700
Re: I knew I was going to dislike New Google Groups! Fibonacci Code <anglikai@gmail.com> - 2012-04-30 07:36 -0700
Re: I knew I was going to dislike New Google Groups! lawcounsels@gmail.com - 2012-04-30 08:34 -0700
Re: I knew I was going to dislike New Google Groups! Thomas Richter <thor@math.tu-berlin.de> - 2012-04-30 18:53 +0200
Re: I knew I was going to dislike New Google Groups! Fibonacci Code <anglikai@gmail.com> - 2012-04-30 09:58 -0700
Re: I knew I was going to dislike New Google Groups! lawcounsels@gmail.com - 2012-04-30 10:18 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-10 05:58 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles biject <biject.bwts@gmail.com> - 2012-04-10 07:26 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels <lawcounsels@gmail.com> - 2012-04-10 08:10 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles biject <biject.bwts@gmail.com> - 2012-04-10 11:02 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels <lawcounsels@gmail.com> - 2012-04-11 02:43 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Thomas Richter <thor@math.tu-berlin.de> - 2012-04-11 02:47 +0200
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels <lawcounsels@gmail.com> - 2012-04-11 02:56 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Thomas Richter <thor@math.tu-berlin.de> - 2012-04-11 16:26 +0200
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles James Dow Allen <jdallen2000@yahoo.com> - 2012-04-11 07:36 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-11 10:29 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Thomas Richter <thor@math.tu-berlin.de> - 2012-04-12 02:27 +0200
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels <lawcounsels@gmail.com> - 2012-04-12 03:08 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels <lawcounsels@gmail.com> - 2012-04-12 03:34 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Thomas Richter <thor@math.tu-berlin.de> - 2012-04-13 13:48 +0200
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles James Dow Allen <jdallen2000@yahoo.com> - 2012-04-13 05:15 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-13 06:57 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-13 07:03 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-13 06:52 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Thomas Richter <thor@math.tu-berlin.de> - 2012-04-14 00:54 +0200
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels <lawcounsels@gmail.com> - 2012-04-16 02:48 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Thomas Richter <thor@math.tu-berlin.de> - 2012-04-16 13:08 +0200
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-16 04:40 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles James Dow Allen <jdallen2000@yahoo.com> - 2012-04-16 08:11 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Thomas Richter <thor@math.tu-berlin.de> - 2012-04-16 19:31 +0200
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles James Dow Allen <jdallen2000@yahoo.com> - 2012-04-16 14:27 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels <lawcounsels@gmail.com> - 2012-04-24 03:46 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Jim Leonard <mobygamer@gmail.com> - 2012-04-24 07:27 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Fibonacci Code <anglikai@gmail.com> - 2012-04-28 09:55 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels <lawcounsels@gmail.com> - 2012-04-16 02:34 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-04 00:35 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-04 00:38 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-04 04:06 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles Ernst <Ernst_Berg@sbcglobal.net> - 2012-04-06 19:48 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles LawCounsels@aol.com - 2012-04-07 02:28 -0700
Re: Mankind's centuries old Kraft's Inequality / Pigeonholes hurdles lawcounsels@gmail.com - 2012-04-07 03:22 -0700
csiph-web