similar to: Range Coding

Hi demo pages http://web.mit.edu/xiphmont/Public/theora/demo.html http://web.mit.edu/xiphmont/Public/theora/demo2.html discussed opportunity to add range coding there is already some xiph code: http://svn.xiph.org/trunk/ghost/libentcode/ and Timothy B. Terriberry wrote some time ago === I'd estimate that you'd save ~12% by switching from Huffman to something arithmetic coding-based

There is bit space in Bitstream Header to put Huffman codes in. However, This space can take only 80 kinds of Huffman code set. And This space is divded into DC Huffman code set and AC Huffman set, and There are only 16 choices in each DC and AC Huffman code set. If we want to use this space, we find out best(or proper) performance 80 frequency counts(Huffman code sets) from tens thousands of

Dear all I'm currently using a simple encoding implementation based on the encoding example delivered with theora. Now i tried to change the quality of the output file. Its my understanding, that either a bitrate can be set for Constant Bitrate (CBR) encoding, or a quality (0-63) for Variable Bitrate (VBR). As you might know, the basic Encoder Example uses the so-called 2-Pass method for

Hi, I am a newbie to R and trying to implement parallelism in R. I am currently using R-2.3.1, and Cygwin to run R on Windows xp. ssh and all are working fine, When I try to create a socket connection as makeSOCKcluster(c("localhost","localhost")), it just waits for the other prcess on localhost to get created and respond. But this other process is

Hi, I am attempting to implement a mixed (windows/linux) snow sockets parallelism in R, but am running into difficulties similar to a post made Aug 31, 2006 under the same subject heading. I feel like I may be one or two non-obvious steps away from getting it all working, but I'm stuck. If anyone can shed some light on this (I believe Prof. Tierney stated that he has successfully run a

Good day all I want to know what the best codec is to use for asteris for VOIP We have two towns connected with a 64k line that's going to do VOIP with astersik.At the moment with the default installation the quality is bad and the bandwith is high. Is this even a codec problem Pleas help ALtus

I'm sure there is a clever way to do the following, but I've been unable to find it on this forum or by writing my own functions. I have 8 years worth of weekly data but would like to restrict the labels on the x-axis to months only. I've included the first year's worth of data below. My line of thought has been along these lines

Hello, Is there a way to find where a script is located within a script? getwd() doesn't do what I want because it depends on where R was called from. I want something like source("randomFile") and within randomFile there is a function called whereAmI() which returns c:\blah\blah2\randomFile.R In perl there is a library called FindBin and $FindBin::Bin has the directory of the file

Hola, Por favor, ¿me podéis referenciar algún libro de R que aborde en profundidad la generación de gráficos y almacenamiento de los mismos en fichero de salida?. Me refiero tanto a gráficos relativos a series temporales como a gráficos/tablas que recojan datos numéricos. Gracias de antemano. Atte. Eva Prieto Castro [[alternative HTML version deleted]]

Hello Friends, I am new to R and stuck with a problem. i have two columns drug_A and drug_B, i have plotted a scatter plot using the ggplot2 function. My problem is with the third column, it is the p-value column. I want to color and size points differently based on the p_value, the p_value range is between 0<0.0001< 0.001<0.05<1. I used a script using the ifelse loop, but it

Back in the days of R 2.6, if you did this, you got this: > z=function(x){x*2} > z() Error in z() : argument "x" is missing, with no default But now in this decade we get (for R 2.9 and 2.10): > z=function(x){x*2} > z() Error in z() : element 1 is empty; the part of the args list of '*' being evaluated was: (x, 2) Now I can see (after thinking about it)

I'm struggling to find any help on this seemingly simple question - how does one read data with percentage (%) or currency (?,$ etc.) signs? When I try to read a data file which has any of those symbols in the data fields, they are read as characters rather than values. Is there a function or library which can deal with such values? As an example, I use this sample from one of chinna's

Dear All, I am using the plotrix library to plot some matrices. I have a problem: some of my data are outliers, hence using a linear color scale does not work very well (you would see too many cells having a similar, indistinguishable color). See the code snipped at the end of the email. Plotting the logarithm of the data gets the job done, but my problem is that I would like to write in every

Dear all, I'm currently running R on my laptop -- a Lenovo Thinkpad X201 (Intel Core i7 CPU, M620, 2.67 Ghz, 8 GB RAM). The problem is that some of my calculations run for several days sometimes even weeks (mainly simulations over a large parameter space). Depending on the external conditions, my laptop sometimes shuts down due to overheating. I'm now thinking about buying a more

subject: trimmed mean in R seems to round the trimming fraction to r-help at stat.math.ethz.ch. Consider the following example of 10 numbers. 10% trimmed mean is correct but you can see that the result is the same for many trimming fractions till 0.20! For example 13% trimmed mean should use interpolation of second and eighth ordered observation. R does not seem to do this. The correct 13%

On Tue, 2004-01-20 at 23:44, Josh Coalson wrote: > Miroslav did some experiments with searching for optimum blocksize. > from what I remember it made at best a couple percent difference. > there was a thread about it here a while back. > Did his changes make it in? I can think of a coupla ways to approach this and I'd like to hear about what he tried. A couple of % doesnt seem

The code for ccall looks right. Sounds like you have a very small range of instructions where an uninitialized value appear. You could try debugging at asm level. Shadow for b should be passed at offset 0 in __msan_param_tls. MSan could propagate shadow through arithmetic and even some logic operations (like select). It could be that b is clean on function entry, but then something uninitialized

Looks like when you materialize the stores, you should check the size of the the store and emit an appropriate amount of stores to the origin shadow (or just a memset intrinsic?). On Wed, Feb 5, 2014 at 2:13 PM, Keno Fischer <kfischer at college.harvard.edu>wrote: > The @entry stuff is just a gdb artifact. I've been tracking this back a > little further, and it seems there's

Yes, it would be great to get that fixed. On Wed, Feb 5, 2014 at 4:09 PM, Evgeniy Stepanov <eugeni.stepanov at gmail.com>wrote: > On Thu, Feb 6, 2014 at 12:21 AM, Keno Fischer > <kfischer at college.harvard.edu> wrote: > > Looks like when you materialize the stores, you should check the size of > the > > the store and emit an appropriate amount of stores to the

I did some research on patent claims on range and arithmetic coding. The original range code pdf presented in the UK by an ibm employee at the time asserts no patent claims what so ever. If there are patents I cant find em. I have the original paper in PDF if anyone cares to see it. Its a good candidate for encoding because browsing a few of the implememntations avaialable on line, I can roll my