1996-04-11 - Re: why compression doesn’t perfectly even out entropy

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From: jamesd@echeque.com
To: cypherpunks@toad.com
Message Hash: 3ae388560496972e40f7c258ee4dbc4d2829c76a14a2947a40cd3cb5635ac147
Message ID: <199604110635.XAA08339@dns2.noc.best.net>
Reply To: N/A
UTC Datetime: 1996-04-11 15:45:00 UTC
Raw Date: Thu, 11 Apr 1996 23:45:00 +0800

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From: jamesd@echeque.com
Date: Thu, 11 Apr 1996 23:45:00 +0800
To: cypherpunks@toad.com
Subject: Re: why compression doesn't perfectly even out entropy
Message-ID: <199604110635.XAA08339@dns2.noc.best.net>
MIME-Version: 1.0
Content-Type: text/plain


At 10:36 PM 4/9/96 -0400, JonWienke@aol.com wrote:
> Would anyone like to propose a means of measuring entropy that we can all
> agree on?  I haven't seen anything yet that everyone likes.

Nor will you:  To measure entropy is a deep unsolved philosophical
and physical problem.

Only a known distribution has a well defined entropy.  If you do not
know what kinds of order might be present in your data, you cannot
define the entropy.
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