Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: MRAB Newsgroups: comp.lang.python Subject: Re: Compression of random binary data Date: Mon, 11 Jul 2016 19:30:39 +0100 Lines: 16 Message-ID: References: <1b63ee29-8fa7-acbe-17b3-b4c8fa7abe8c@mrabarnett.plus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de lKc6TJmGeKQaf6XGo/hKFgiMbZHw9x/d/FkUvRDdaeMw== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.004 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'binary': 0.05; 'compression': 0.09; 'happen.': 0.09; 'rules.': 0.09; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'message-id:@mrabarnett.plus.com': 0.16; 'received:192.168.1.4': 0.16; 'received:84.93': 0.16; 'received:84.93.230': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'subject:random': 0.16; 'url:drdobbs': 0.16; 'violated': 0.16; 'wrote:': 0.16; 'symbolic': 0.22; 'header :In-Reply-To:1': 0.24; 'header:User-Agent:1': 0.26; 'mathematical': 0.27; 'actual': 0.28; 'random': 0.29; 'rules': 0.31; 'received:84': 0.32; 'done,': 0.33; 'shorter': 0.33; 'could': 0.35; "isn't": 0.35; 'but': 0.36; 'there': 0.36; 'to:addr :python-list': 0.36; 'subject:: ': 0.37; 'say': 0.37; 'data': 0.39; 'received:192': 0.39; 'to:addr:python.org': 0.40; 'challenge': 0.61; 'email addr:gmail.com': 0.62; 'physical': 0.72; 'enduring': 0.84 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.2 cv=QfYkhYTv c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=IkcTkHD0fZMA:10 a=pGLkceISAAAA:8 a=3nxJ51DDAAAA:8 a=NTyyiUZy2tjEDjojg3QA:9 a=6kGIvZw6iX1k4Y-7sg4_:22 a=ICssBpfXEROLC1Z5cFHk:22 X-AUTH: mrabarnett@:2500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 In-Reply-To: X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: <1b63ee29-8fa7-acbe-17b3-b4c8fa7abe8c@mrabarnett.plus.com> X-Mailman-Original-References: Xref: csiph.com comp.lang.python:111280 On 2016-07-11 18:52, jonas.thornvall@gmail.com wrote: > What kind of statistic law or mathematical conjecture or is it even a physical law is violated by compression of random binary data? > > I only know that Shanon theorised it could not be done, but were there any proof? > > What is to say that you can not do it if the symbolic representation is richer than the symbolic represenatation of the dataset. > > Isn't it a fact that the set of squareroots actually depict numbers in a shorter way than their actual representation. > > Now the inpretator or program must know the rules. And i have very good rules to make it happen. > If you want a challenge: The Enduring Challenge of Compressing Random Data http://www.drdobbs.com/architecture-and-design/the-enduring-challenge-of-compressing-ra/240049914