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Hi, > The loop that I am trying it on is: > for(i=0; i< 1000; i++) > { > c[i] = a[i] + b[i]; > } I can't find any benefit unrolling this loop. ------------------ Yuan Pengfei Peking Unversity, China

Dear all: My name is Xudong Zhang, from Peking University. I'm very interested in the Project: Posting list encoding improvements, and I have had some experience on encoding, and so I want to be involved in the project. About the project?I have a question to consult: What's the main goal of the improvement of the speed for the encoding and decoding of posting lists? Is it OK to increase

Dear R users, I see a graph (shown athttps://cid-c486ebef16722625.photos.live.com/self.aspx/%e6%88%91%e5%96%9c%e6%ac%a2%e7%9a%84%e8%8a%b1/untitled.bmp) in a published paper, which is very informative and clear. But I don't know what type the graph is. It looks like a sactter plot but has the points with the same y values are seperate.. I really aprreciate it if someone can tell

Hi, I've recently setup a new server for our public libraries. For the last two years, this has been my first "big" job, since it involves networking eleven small to medium size public libraries. There was a hiccup some time ago when the administration hiring me wanted to do it on their own, but it took them less than two weeks to get the server hacked and lose everything. So

Hi, you need to run some optimization passes first. (like -O2) 2011/5/3 Manish Gupta <mgupta.iitr at gmail.com> > I just want to try loop-unroll and see corresponding changes in the bitcode > file. For that any loop will do. Have you been able to test llvm loop-unroll > successfully? > > > On Mon, May 2, 2011 at 10:04 PM, Yuan Pengfei <coolypf at qq.com> wrote: >

Hello, I have submitted my proposal on GSoC. But I have little idea about the timeline. Many things are difficult to be determined. Cheers, Liu Chi 2014-03-11 21:33 GMT+08:00 Olly Betts <olly at survex.com>: > On Tue, Mar 11, 2014 at 10:11:31AM +0800, Chi Liu wrote: > > Thank you for your patient explanation about the project. My > > understanding about the project

Hello. I am Liu Chi(??) from Peking University, China. I am planning to join GSoC. I am interested in Xapian and looking forward to find something interesting in GSoC 2014 Project Ideas List. The topic of "Clustering of Search Results" looks interesting and I think it suits me. I have been involved in a project that aims to clustering tweets based on the text similarity and user

I just want to try loop-unroll and see corresponding changes in the bitcode file. For that any loop will do. Have you been able to test llvm loop-unroll successfully? On Mon, May 2, 2011 at 10:04 PM, Yuan Pengfei <coolypf at qq.com> wrote: > Hi, > > > The loop that I am trying it on is: > > for(i=0; i< 1000; i++) > > { > > c[i] = a[i] + b[i]; > > }

Hi Everyone, I?m a student in Peking University, China, my name is Xiaobing Liu, I?m interest in Spelling correction project. I think Xapian?s Spelling correction is based on edit distance with trusted dictionary. I have some questions about the spelling correction algorithm. 1. The Spelling correction algorithm depends on which dictionary, the dictionary in inverted index or other

I am trying to do this, but it won't work: > library(lattice) > elemconc = data.frame(expand.grid(id=1:20, geno=c('exp', 'wt'), region=c('cor', 'cr', 'spine'), elem=c('fe', 'cu', 'zn')), conc=rnorm(360, 10)) > elemconc$geno = factor(elemconc$geno) > elemconc$region = factor(elemconc$region) > for (i in

Hi All, I'm Billy, a senior undergraduate student in Peking University. I'm working in the area of Information Retrieval and Web Mining. When going through the idea list, I felt quite interested in the "Backend for Lucene format indexes" project. I have been using java-lucene for about one year, but my subsequent work prefers C++ codes. This project is very meaningful to smooth

Dear officers, Sorry to bother you. Recently, I have installed the R version 3.4.2. But some cautions appear in the console as the following: Note: no visible global function definition for 'radixsort' This note didn't affect the normal operation of some statistical packages. BUT it does great affect the ggplot2 and the other graphics systems in my PC. So, what can I do to fix this

On Mon, Mar 24, 2014 at 01:57:09PM +0800, Chi Liu wrote: > I have generated the patch by git diff and upload here > https://github.com/incredibleliuchi/xapian_patch_earlyenglishstemmer > > And I have also open a "pull request" on github. Thanks, looks good. Now merged. Cheers, Olly

Hi, samuelharden has left some comment for my proposal. And I have left some comment to improve my proposal. Kindly review it and let me know of any changes are to be made to my proposal or if more research needs to be done now. Thanks a lot. -- Chi Liu +86-15210624786 Undergraduate Student Team of Search Engine and Web Mining School of Electronic Engineering and Computer Science Peking

You mean like *llvm-gcc-4.2 -O2 -emit-llvm Hello.c -c -o Hello.bc* But still i am not able to observe any effect on bit code by running *opt-2.8 -loop-unroll Hello.bc -o Hello_unroll.bc* On Tue, May 3, 2011 at 3:58 AM, Zakk <zakk0610 at gmail.com> wrote: > Hi, you need to run some optimization passes first. (like -O2) > > 2011/5/3 Manish Gupta <mgupta.iitr at gmail.com>

Dear R fans ( and wiki fans), I am just writing a draft to introduce confidence intervals of various "effect sizes" to my students. Surely, I'll recommend the package MBESS in R. Currently, it means I have to recommend R's interface at first. As a statistics teacher in a dept of psychology, I often have to reply why not to teach SPSS. Psychologists and their students hate to

Hi, The function cummax() seems to have a bug. > x <- c(NA, 0) > storage.mode(x) <- "integer" > cummax(x) [1] NA 0 The correct result of this case should be NA NA. The mistake in [ https://github.com/wch/r-source/blob/trunk/src/main/cum.c#L130-L136] may be the reason. Best Regards, Dongcan -- Dongcan Jiang Team of Search Engine & Web Mining School of Electronic

Hi, there. I am trying to read a file into R, but I got following message Error in file(file, "r") : unable to open connection In addition: Warning message: cannot open file `SwirlSample.txt' . In fact, my file has been already in the current working directory. My R is running on window operation system instead of UNIX. Thanks. Shizhu Zang Department of Biochemsitry Peking

Dears, I'm a college student and In doing my statistics homework. I use R with SEM package as my tool for sem analysis, but my teacher told me AMOS is more suitable for such analysis. Could someone help tell me whether it is true that some commercial software is better accepted in academic fields? Sorry if I should not post such topics here. -- Best Regards, Reeyarn T. Lee Accounting

Hi, You might want to try running -loops -loop-simplify before loop unroll. >From loop simplify.cpp This pass performs several transformations to transform natural loops into a00011 // simpler form, which makes subsequent analyses and transformations simpler and00012 // more effective. Arushi On Tue, May 3, 2011 at 2:17 PM, Manish Gupta <mgupta.iitr at gmail.com> wrote: > You