similar to: Article score calculations for Boolean and MultiTerm Queries, and customization options

Hi ferreteers, I came across a segfault in the query parser. It had already been reported[1] and fixed[2], but it can lead to a denial of service. If you use Ferret anywhere that you allow users to execute queries, those users can crash your Ruby process with a specially crafted query. I''m sure you''re all using Monit or something for your Rails or drb processes, so

...as promised. This describes the mdct used in my d.m.l patch. I think it is the same as the Lee fast-dct. I typed it in a kind of pseudo-TeX, 'cause the ascii art would kill me. Hope you can read TeX source; if not, ask someone who can to make a .ps/.gif/.whatever of the TeX output, and put it on a webpage or something. I'm to lazy to do it (and besides, I don't have access to TeX,

Hello list. I once had a samba server acting as a PDC, a mapping between my NT 'Domain admins' and Unix 'admins' groups, and everything worked perfectly. Now I got a new shiny samba server acting as a print server only, member of an AD domain, and I can't have the members of 'Domain admins' group manage printing drivers on the server, whereas the Administrator

Dear R-Sig-Jobs members, For its Executive Office in Brussels, The International Diabetes Federation (IDF) is looking to hire a Data Analyst & Coordinator with significant R experience. This person will join the Epidemiology and Public Health unit that sits within the Policy & Programmes department. They will be responsible for the management of IDF?s high-profile Diabetes Atlas. They

Dear R-Sig-Jobs members, For its Executive Office in Brussels, the International Diabetes Federation (IDF) is looking to hire a Statistician and Data Analyst to join the Policy & Programmes department. This person will be responsible for the management of the high-profile IDF Diabetes Atlas (www.diabetesatlas.org). They will coordinate the collection, analysis, interpretation and presentation

Salutations: I have been trying to translate a S-PLUS/ArcInfo (GIS software) application that I wrote on a SGI (IRIX) platform to public domain R and GrassGIS on a Linux platform. I am almost on the verge of abandoning it as I find R to be rather unstable, slow and frustrating. I enclose a section of my code for R experts to examine hoping that they'll point out that all the above three are

Dear R users, I would like to optimize a linear approximation of a quadratic function using lpSolve. My code runs without any error or warning message but the constraints that I set don't seem to work properly. Nevertheless, I am certain that my code is somewhere wrong. I would like to solve the following problem: max 2x-x^2+y subject to 2x^2 + 3y^2 <= 6 2>= x,y >= 0 I would

Hello list. I recently moved to an AD environment. I'm still keeping a samba servers to make my cups-managed printers available to windows users, rather than duplicating configuration with a Windows print service. But I'm facing two problems, probably due to the way we manage AD. First, all my host belong to a Unix-managed DNS domain (msr-inria.inria.fr), not to the windows-managed

Hi Everybody I want to print a latex table containing math characters in the column heading These are the formulae I want to use as column headings. It prints OK from TeX $\sum_{i}\sum_{j}C_{P,i,j,y}\times\mathit{FC}_{i}$, $XU_{alt,y}$, $n$, $\bar{C}_{P,y}$ My plan was to create a character vector with these and later rbind the values to them. When I create the vector like:

Hola, Acabo de calcular tf-idf y me surge una duda. ¿Habría un valor de idf o tf-idf que se considerara como umbral para establecer que una palabra es muy común o no? Los valores de idf en mis datos van entre 0 y 3.78 y los de tf-idf ente 0 y 0.07. Un saludo El Mar, 28 de Abril de 2020, 12:53, Carlos Ortega escribió: > Hola, > Yo de primeras los quitaría para qué otros topics aparecen.

Hello guys.I have sent a pull request for the code and tests of the Tf-Idf weighting scheme. Please do let me know if any changes are required.Meanwhile,Ill begin working on implementing normalizations which require additional statistics and on the DFR schemes. https://github.com/xapian/xapian/pull/6 On Tue, Feb 26, 2013 at 5:30 PM, <xapian-devel-request at lists.xapian.org>wrote: >

df is a very large data frame with arrival estimates for many flights (DF$flightfact) at random times (df$PredTime). The error of the estimate is df$dt. My problem is that I want to know the prediction error at each minute before landing. This code works, but is very slow, and dominates everything. I tried using split(), but that rapidly ate up my 12 GB of memory. So, is there a better R way of

Hello Guys. I have updated the code,tests,documentation,makefile entries and the registry entry of the* *TfIdf patch as per the feedback.Please do let me know if any additional changes are required before the patch can be merged, -Regards -Aarsh On Sun, Mar 3, 2013 at 2:50 PM, aarsh shah <aarshkshah1992 at gmail.com> wrote: > Hello guys.I have sent a pull request for the code and

Hey guys, Simple question here. I have a single index of recipes, from which I''m looking at the following fields: Name, Ingredient Text, Tags, and Description. The key is, I want to show all the results that come from Name, before I show any of the results from Ingredient Text, Tags, or Description. I tried doing this: acts_as_ferret :fields => { :name =>

I saw Tanya's note about this year's LLVM developers' meeting. It would be interesting if the time could coincide with IDF 2009 (Sep. 22-24). I'm sure some LLVM folks would be interested in attending IDF as well. Perhaps hold the LLVM conference the day before or after IDF? -Dave

Hello, I use the following function "bootstrapge" to calculate (and compare) the generalization error of several bootstrap implementations: ## ## Calculates and returns a coefficient corresponding to the generalization ## error. The formula for the bootstrap generalization error is: ## $N^{-1}\sum_{i=1}^n B^{-1}\sum_{j=1}^B |y_i - (\beta_n^{*j})^T x|$ ## ## x - mxn matrix where m is

Dear wizaRds, I use the MASS::kde2d function to estimate density of the two first principal components. I do that to have a graphic visualisation of a "group structure" in my dataset. So far, no problem. But i would like to estimate that density using weights according to the COS?? values that tells me if my observation is well represented on the factorial plan 1-2. I would like to

Dear helpers in this forum, I have the following question: Suppose I have the following data set: id x y 023 1 2 023 2 5 023 4 6 023 5 7 412 2 5 412 3 4 412 4 6 412 7 9 220 5 7 220 4 8 220 9 8 ...... and i want to calculate sum_{i=1}^k sum_{j=1}^{n_i}x_{ij}*y_{ij} is there a simple way to do this within and between subject summation in R?

Hi, I'm bit confused about ecdf (read the help files but still not sure about this). I have an analytical expression for the pdf, but want to get the empirical cdf. How do I use this analytical expression with ecdf? If this helps make it concrete, the pdf is: f(u) = \sum_{t = 1}^T 1/n_t \sum_{i = 1}^{n_t} 1/w K((u - u_{it})/w) where K = kernel density estimator, w = weights, and u_{it} =

Dear all, ? I am implementing a stochastic utility model that will eventually make use of multinomial logit. I found that there is a package in R called mlogit. I am not sure whether I have already found the correct package or software. May I ask am I correct? ? Basically, let's say ? I have observations of n outcomes, for each outcome 1<=i<=n, they were selected by a choice from a set