search for: caculation

On Mon, Sep 02, 2013 at 09:21:48AM +0800, jiangwen jiang wrote: > TfIdfWeight and BM25(b=0) also need wdf_upper_bound, it is not exists in > Lucene backends. If you don't provide an implementation of wdf_upper_bound(), the default is to use the collection frequency of the term, so provided that information is available in the lucene files, the lack of wdf_upper_bound information

Hi,All I use HTB to control traffic.Here is my script: /usr/sbin/tc qdisc del dev nas0 root /usr/sbin/tc qdisc add dev nas0 root handle 1:0 htb default 60 /usr/sbin/tc class add dev nas0 parent 1:0 classid 1:1 htb ceil 896kbit rate 896kbit prio 0 burst 60k /usr/sbin/tc class add dev nas0 parent 1:1 classid 1:10 htb ceil 896kbit rate 537kbit prio 1 burst 60k /usr/sbin/tc class add dev

may some one please help me to sort this out, i am trying to writ a R code for calculating the frequencies of the amino acids in 9 different sequences, i want the code to read the sequence from external text file, i used the following code to do so: x<-read.table("sequence.txt",header=FALSE) then i defined an array for 20 amino acids as following:

before I accuse somebody to "overbill" I would like you to calculate with me: Rate: 0.0189 for calling Taiwan via NuFone Duration: 930 seconds Lets vote for the answers: 0.7269 or 0.2929 ??? bye Ronald Wiplinger

Dear R Users I'm writing my first simulation in R. I've put across my problems with a smaller example in the attachment along with the questions. Please help. Best regards Meenu -------------- next part -------------- mydat<-read.table(textConnection("Level spread change State 4.57 1.6 BlF NA 4.45 2.04 BrS NA 3.07 2.49 BlS NA 3.26 -0.26 BlF NA 2.80 0.22 BrF NA 3.22 2.5 BrS NA

This is a eaeir way to ask my prior question: I want to caculate how many an exact day of the month there is between two dates. For example; How many 7th of the month is there between "1998/12/17" and "2000/1/7". To make the problem simple, the day of the month (7) is the day in the 2nd date.

Hello£¬experts I am working on a simulation of effect of artificial selection on certain population in Animal Breeding.I am new beginner in coding. I have already build a matrix A(500*500) based on this code A<-matrix(,500,500) for(i in 1:500){ for(j in 1:500){ ifelse(i==j,A[i,j]<-1,A[i,j]<-0) } } and I need to caculate A2 base on A and X1(4500*4500).Here are the codes

Hi, all: I have wrote a demo patch for Backend for Lucene format indexes, Lucene version is 3.6.2. http://lucene.apache.org/core/3_6_2/fileformats.html Now, this demo patch just support the basic features in Lucene. Compound File(.cfs/.cfe)?term vector(.tvx/.tvd/.tvf) delete document(.del) are not supported, skip list in .fdx is not supported too example/quest.cc is used to test this demo.

Hi here is the code as example lars is in package lars > x<-matrix(rnorm(20*5,0,1),20,5) > bs<-matrix(sample(seq(1:10),5),5,1) > er<-rnorm(20,0,1) > y<-x%*%bs+er > lobj<-lars(x,y,type="lasso") > names(lobj) [1] "call" "type" "df" "lambda" "R2" [6] "RSS"

Hello list, I've got a question from reading Using Samba 3rd, where it puts: ... the final permission is caculated by below filters in the order used by Samba: 1. Apply any DOS attribute mapping options << I take this as either map DOS attributes to execute bits, or store DOS attributes in extended attributes. Correct? 2. Apply the create mask settings 3. Apply the force

Dear all I'm trying to caculate the MLEs for parameters of Inverse Gaussian distribution (in a k-sample problem with common mean) by using EM-Algorithm. I found some package for EM-Algorithm that are useful for missing or incomplete data and are not helpful for solving my problem. (Exactly, the problem is: Let Xij, i=1,..,k , j=1,...,ni, be a random sample from IG(?,?i). So the

hi: I want to know the math behind the "tm" package findAssocs(). I have found that someone had asked the question before, and have a good explanation by Rick. ?]http://r.789695.n4.nabble.com/findAssocs-td3845751.html?^ But I still don't understand how to calculate the correlation value between the two vectors. For example: # Correlation word2 with word3

On Mon, Aug 26, 2013 at 09:41:07AM +0800, jiangwen jiang wrote: > > For now, using weighting schemes which don't use document length is > > probably the simplest answer. > > There's tf-idf weighting scheme on svn master, is it suitable for lucene > backend? Yes - TfIdfWeight doesn't ever use the document length (at least with the normalisations currently

...information from every zone of the world,I want to extract only a part of them to calcuate, like the information in a city or the information between exact latitute range and longtitude range, can r tool help me to do that or in some point r tool is a statitcal software which focus on mathmatical caculation and the user have to translate the special data files into some data structure like array or vector by himself, then the r tools use the array or vector to calculate? I am very looking forward to your reply thanks very much sincerely mat chueng [[alternative HTML version deleted]]

General goal: Write R code to find the inverse matrix of an nxn positive definite symmetric matrix. Use solve() to verify your code works. Started with a 3x3 matrix example to build the code, but something dosen't seem to be working. I just don't know where I am going wrong. ##Example matrix I found online A<-c(4,1,-1,1,2,1,-1,1,2) m<-matrix(A,nrow=3,ncol=3) ##Caculate the eigen

...nd of the loop have tried various commands: e.g. fdt[l]<- c(table(fd)) fdt[l] <- fd c(table(fdt)) c(table(fdt[l]))<- fd c(table(fdt[l]))<- c(table(fd)) and some other commands using append and assign. None of these produces what I am looking for and some mess up the rest of my caculations. When I tried the second of these I get the warning Warning: number of items to replace is not a multiple of replacement length. Any help would be much appreciated. -- View this message in context: http://www.nabble.com/R-code-for-creating-and-appending-to-frequency-table-tp25368860p25368860.ht...

Dear R-ians, I'm looking for a computational simplified formula to calculate a measure for heterogeneity (let's say H ): H = sqrt [ (Si (Sj (Xi - Xj)?? ) ) /n ] where: sqrt = square root Si = summation over i (= 0 to n) Sj = summation over j (= 0 to n) Xi = element of X with index i Xj = element of X with index j I can simplify the formula to: H = sqrt [ ( 2 * n * Si (Xi) - 2 Si (Sj

My problem is very easy, but it took me hours without a solution. So, I have to take any data set from UCI repository website for example this one which is about consensus income: http://archive.ics.uci.edu/ml/datasets/Census+Income And here is the data folder: http://archive.ics.uci.edu/ml/machine-learning-databases/adult/ My task is to caculate to do this: a) Calculate measures of

Hello, My name is Maria, MBA student in Sanfransisco, USA. In my credit scoring class, I have hard time making "transition matrix", which explains probability especially in relation to "Markov chain model". It is regarding people's monthly credit payment behavior. Does R have function to caculate it? I am actually a novice in using 'R'. Please help me!!! Maria

...(as.numeric(mu1<-p$mu1),as.numeric(mu2<-p$mu2), as.numeric(alpha<-p$alpha),as.numeric(beta<-p$beta), as.numeric(Wsigma<-p$Wsigma),as.numeric(sigmaA<-p$sigmaA),as.numeric(b<-p$b),as.numeric(r<-p$r)) I intend to use the variables stored in the the data frame for my caculations. but each time I try I get the followingerror message. Error in uniroot(function(n) eval(p.body) - power, c(2, 1e+07)) : invalid function value in 'zeroin' In addition: Warning message: the condition has length > 1 and only the first element will be used in: if (f(lower, ......