Displaying 3 results from an estimated 3 matches for "vsencoding".
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2014 Mar 13
3
Optimized VSEncoding
...riginal ------------------
From: "Olly Betts";<olly at survex.com>;
Date: Wed, Mar 12, 2014 04:37 PM
To: "Hurricane Tong"<zhangshangtong.cpp at qq.com>;
Cc: "xapian-devel"<xapian-devel at lists.xapian.org>;
Subject: Re: [Xapian-devel] Optimized VSEncoding
On Wed, Mar 12, 2014 at 12:30:09PM +0800, Hurricane Tong wrote:
> I optimized the code of VSEncoder,
> and encode/decode the whole list, linux.postlist.
>
> Encoding time :
> VSEncoder 103429ms
> InterpolativeEncoder 684ms
>
> Decoding time:
> VSDecoder 756ms
>...
2014 Feb 11
2
A beginner in "Posting list encoding improvements"
...well. If there is someone who also uses Xapian in Windows, I think it will be helpful for us to talk about some issues in building in Windows together. Finally, I succeed in running some demo code in Release mode, but I still failed in Debug mode.
I have finished reading the paper provided, about VSEncoding. And plan to read some source code concerning about this project. Then I will try to put up some my own proposal. And I will appreciate it much if you can give me some extra advice for beginning with the project "posting list encoding improvements". I'm looking forward to participati...
2013 Apr 05
0
Question about Project: Posting list encoding improvements
...7%
k_gamma
172.9461803
242.8787555
15.24%
gamma_opt
61.7750133
59.30571281
14.91%
SIMD__kgamma
174.1829249
262.0594328
15.24%
Thank you very much!
P.S. In D. Lemire's paper: Decoding billions of integers per second through
vectorization(CORR'12), SIMD-PORDelta can outperforms VSEncoding w.r.t
decoding speed, while remaining nearly the same compression ratio, namely,
bits/int.
[1] D. Lemire et al. Decoding billions of integers per second through
vectorization, CORR?12, http://arxiv.org/abs/1209.2137
Best wishes,
Xudong Zhang
--
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Xudong Zhang
+86-134...