I ve written some many years ago dynamic Huffman algorithm to compress and decompress data. It is mainly targeted to data with some symbols occuring More often than the rest (e.g. having some data file consisted of 3 different symbols and their total number of occurence in that file s1(1000), s2(200), s3(30) so the total length of file is 1000+200+30=1230 bytes, it will be encoded assigning one bit to s1 and 2 bits to s2, s3 so the encoded length will be 1*1000+2*(200+30)=1460 bits=182 bytes). In the best case the file consisted of just one symbol will be encoded with compression ratio as 1:8. Huffman coding is used in image compression, however in JPEG2000 arithmetic codec is imployed.
标签： decompress algorithm compress Huffman
上传时间： 2016-05-16
上传用户：aysyzxzm
s file contains the Joone Distributed training Environment (DTE). See http://www.jooneworld.com/docs/dte.html to learn More about it. To learn More about Joone - Java Object Oriented Neural Engine: http://www.joone.org Joone and the DTE are both released with the LGPL license @2004 Paolo Marrone and the Joone team - All rights reserved ==================================================================== Credits The Joone DTE uses the following external packages: - SUN Jini Network Technology http://wwws.sun.com/software/jini/index.html - Computefarm Framework http://computefarm.jini.org - Spring Framework http://www.springframework.org We want to thank all the authors and contributors of the above packages. Please read the respective licenses contained in this distribution.
标签： Distributed Environment jooneworld contains
上传时间： 2013-12-25
上传用户：钓鳌牧马
Sequential Monte Carlo without Likelihoods 粒子滤波不用似然函数的情况下 本文摘要:Recent new methods in Bayesian simulation have provided ways of evaluating posterior distributions in the presence of analytically or computationally intractable likelihood functions. Despite representing a substantial methodological advance, existing methods based on rejection sampling or Markov chain Monte Carlo can be highly inefficient, and accordingly require far More iterations than may be practical to implement. Here we propose a sequential Monte Carlo sampler that convincingly overcomes these inefficiencies. We demonstrate its implementation through an epidemiological study of the transmission rate of tuberculosis.
标签： Likelihoods Sequential Bayesian without
上传时间： 2016-05-26
上传用户：离殇
I made a lot of changed on this object,such as * // 1.Encapsulates all code in one userobjet,since PB does not * // support "Address of Function" , so we can not set new * // WndProc, just makes the object More easy to use. * // 2.Uses structure array instead of Datastore * // 3.Calc width of menuitem at runtime(MEASUREITEM) * // 4.Draw disabled status
标签： Encapsulates userobjet changed object
上传时间： 2014-01-14
上传用户：lx9076
This file contains a selection of VHDL source files which serve to illustrate the diversity and power of the language when used to describe various types of hardware. The examp terms of basic logic gates, to More complex systems, such as a behavioural model of a microprocessor and associated memory. All of the examples can be simulated using any synthesised using current synthesis tools.
标签： illustrate diversity selection contains
上传时间： 2016-06-06
上传用户：yimoney
This LDPC software is intended as an introduction to LDPC codes computer based simulation. The pseudo-random irregular low density parity check matrix is based on Radford M. Neal’s programs collection, which can be found in [1]. While Neal’s collection is well documented, in my opinion, C source codes are still overwhelming, especially if you are not knowledgeable in C language. My software is written for MATLAB, which is More readable than C. You may also want to refer to another MATLAB based LDPC source codes in [2], which has different flavor of code-writing style (in fact Arun has error in his log-likelihood decoder).
标签： LDPC introduction simulation software
上传时间： 2014-12-05
上传用户：change0329
This guide reviews the rules and syntax of the principle commands that comprise C and its object-oriented cousin, C++. The reference consists of 19 chapters that define operators and the standard input/output, string, character, and More.
标签： object-ori and principle the
上传时间： 2014-01-15
上传用户：ve3344
Abstract-The effect of the companding process on QAM signals has been under investigation for the past several years. The compander, included in the PCM telephone network to improve voice performance, has an unusual affect on digital QAM data signals which are transmitted over the same channel. The quantization noise, generated by the companding process which is multiplicative (and asymmetric), degrades the detectability performance of the outermost points of the QAM constellation More than that of the inner points. The combined effect of the companding noise and the inherent white gaussian noise of the system, leads us to a re-examination of signal constellation design. In this paper we investigate the detectability performance of a number of candidates for signal constellations including, a typical rectangular QAM constellation, the same constellation with the addition of a smear-desmear operation, and two new improved QAM constellation designs with two-dimensional warpi
标签： investigation Abstract-The companding the
上传时间： 2013-12-20
上传用户：英雄
This sample provides a generic example of a PCI IDE minidriver. The sample isolates vendor-specific code from the higher-level PCI IDE bus driver, much as SCSI minidrivers isolate code from the SCSI port driver. See the Release Notes section for More information. This sample works on both x86 and Alpha platforms, and is 64-bit compliant. It builds with Microsoft® Visual C® 6.0. It does not implement Plug and Play or Power Management.
标签： sample vendor-specific minidriver provides
上传时间： 2013-12-20
上传用户：wyc199288
Programming PHP, Second Edition is the authoritative guide to PHP 5 and is filled with the unique knowledge of the creator of PHP (Rasmus Lerdorf) and other PHP experts. When it comes to creating web sites, the PHP scripting language is truly a red-hot property. In fact, PHP is currently used on More than 19 million web sites, surpassing Microsoft s ASP .NET technology in popularity. Programmers love its flexibility and speed designers love its accessibility and convenience.
标签： authoritative Programming PHP the
上传时间： 2016-06-30
上传用户：qq1604324866
