Re: A proposal for Shared Dictionary Compression over HTTP


This reminds me of a theoretical paper I wrote for a peer reviewed
conference (MTECS'08) during my undergrad program in the year 2008. I am
attaching that paper here in the email, but it can also be downloaded from

The paper describes various terminologies and a couple of algorithmic
procedures to reference pieces of one document in the other using ordered
pairs. Since then I did not get a chance to explore the idea further with
practical data.


On Tue, Jun 7, 2016 at 1:45 PM Wei-Hsin Lee <> wrote:

> Hi,
> Attached please find the updated version of SDCH spec with proper license
> language. It is added based on the feedback from other people. SDCH is
> supported by Google Chrome and is used by Google web search and other
> company like LinkIn. Yandex expresses interests in properly submit SDCH via
> IETF.  Please let us know if you have any feedback on this. Thank you very
> much,
> SDCH team, Google Inc.
> On Mon, Sep 8, 2008 at 1:59 PM, Wei-Hsin Lee <> wrote:
>> Hi,
>> Over the last few weeks we've been experimenting with a way to get better
>> compression for HTTP streams using a dictionary-based compression scheme,
>> where a user agent obtains a site-specific dictionary that then allows
>> pages on the site that have many common elements to be transmitted much
>> more quickly.
>> We have a paper that we wrote to describe this idea, which I have put
>> online here:
>> The specifics in the paper are just one possibility, we're not attached
>> to the exact model described above. So far our experiments have been quite
>> encouraging, so we'd love to work with other browser and server vendors to
>> flesh this out. Is this something that anyone would be interested in? Your
>> advices are very welcomed.
>> Thank you,
>> SDCH team, Google Inc.
> --

Sawood Alam
Department of Computer Science
Old Dominion University
Norfolk VA 23529

Received on Tuesday, 7 June 2016 18:29:49 UTC