Talk:Shannon–Fano coding

message: http://www.nist.gov/dads/HTML/shannonFano.html has a paragraph identical to p2 of this article. 
Either http://www.nist.gov/dads/HTML/shannonFano.html copied this, and failed to cite Wikipedia as a source, or this article copied from http://www.nist.gov/dads/HTML/shannonFano.html (which probably is not fair use, as it is not quoted). Or the author is the same in both cases.
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It was probably copied from there... Evil saltine 15:07, 12 Sep 2003 (UTC)
thread_title: Untitled

message: When, exactly, did the Shannon-Fano coding come to be called that, and not something else?  Are there any months and dates that can be assigned to the discovery of the Shannon-Fano coding scheme?  If the discovery cannot itself be dated, when was the Shannon-Fano coding scheme first published in hardcopy form?  If it was never published in hardcopy form, when was it first disseminated electronically?
: Done Calbaer 14:26, 14 August 2006 (UTC)
thread_title:  main article needs a chronology 

message: Shannon-Fano coding is used in the IMPLODE compression method, which is part of the ZIP file format.
Can anyone actually confirm this?  APPNOTE.TXT talks about the codes as Shannon-Fano codes, but as far as I can see, the specs don't put any limitation on what algorithm is used to generate the code lengths when the file is actually compressed. As far as I can tell they could easily be created using the Huffman algorithm, or any arbitrary algorithm— optimal or otherwise. CountingPine (talk) 00:56, 17 January 2009 (UTC)
replies: text: If I understand correctly, the compressed format used to store the trees would only reconstruct the Shannon-Fano trees exactly, and not an arbitrary algorithm such as Huffman's. Balabiot (talk) 13:02, 24 November 2009 (UTC)
thread_title:  Usage in IMPLODE...? 

message: This article is about Shannon–Fano coding, Huffman coding has its own article, so I think it shouldn't be described here in depth. Because of this, I'm going to undo the edit by 195.47.234.241 again. If somebody disagrees, please, discuss here first. Svick (talk) 17:25, 2 March 2010 (UTC)
thread_title:  Huffman algorithm 

message: Yes I know Huffman coding has its own article but doesn't show comparison between Shannon–Fano and Huffman coding with same example.  —Preceding unsigned comment added by 195.47.234.241 (talk) 06:58, 3 March 2010 (UTC)
thread_title: IP 195.47.234.241

message: Ok, so I didn't read down this far before making an edit.  I've just described the same thing in different words and also added what seems to be a missing piece in the huffman algorithm.  Obviously feel free to drop it if it offends thee, but I feel that the article doesn't explain the difference properly without running through the example in words when it is already there in pictures.
Thickycat (talk) 17:26, 26 July 2010 (UTC)
thread_title: thickycat

message: User:Hermel removed the IP's insertion of a new section on Andrew Polar's codes with WP:NOTABILITY as the reason, but that policy only applies to article topics, not to inclusion.  The IP put it back and I removed it again.  I think it's a matter of WP:V and/or WP:RS, as the only source was an WP:EL to some web page.  We'd probably need a secondary document talking about it before we'd want to include it in wikipedia, especially as it's so new and apparently not in a refereed journal yet.  Dicklyon (talk) 04:57, 20 September 2010 (UTC)
replies: text: It is correct that notability doesn't apply, and it is also correct that WP:V applies.  As I just mentioned of on the reliable sources notice board, "LTCB definitely does not qualify as a reliable source--it falls squarely under self-published sources.  If you want to add info about polar codes, you need citations in reliable sources.  The field of error coding, error fixing, etc. is widely discussed in a number of academic journals; if a citation cannot be found in an academic source, it's highly unlikely that the subject is important enough to merit inclusion in any article."  As a side note, if such a reference is found and added, we cannot have the direct linking to external sites like was in the previous version, as a violation of WP:EL.  User:Qwyrxian talk 00:32, 22 September 2010 (UTC)
thread_title:  Polar codes