[social4i size=”large” align=”float-right”] This is a re-post from the R packages mailing list We are pleased to announce the release of version 2.0 [Read more...]

[1] [2] [3] In the mid-1980s, while I was a first-year student in physics at the Bologna State University (Italy), a few friends of mine dragged me to the School of Drama, Arts and Music Studies (DAMS) to follow a couple of lessons of Umberto Eco. I still remember how Read More ... [Read more...]

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If you're looking for some musical nostalgia this weekend, look no further than How Music Taste Evolved, from design firm Polygraph (and with a hat tip to Pogue). Choose any month from the past six decades, and then sit back and watch the top 5 songs on the Billboard chart of ... [Read more...]

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Cross-validation is a widely used model selection method. We show how to implement it in R using both raw code and the functions in the caret package. The post Cross-Validation for Predictive Analytics Using R appeared first on MilanoR. [Read more...]

One of the most common tasks in statistical computing is computation of sample variance. This would seem to be straightforward; there are a number of algebraically equivalent ways of representing the sum of squares \(S\), such as \[ S = \sum_{k=1}^n ( x_k - \bar{x})^2 \] or \[ S = \sum_{k=1}^... [Read more...]

One of the most common tasks in statistical computing is computation of sample variance. This would seem to be straightforward; there are a number of algebraically equivalent ways of representing the sum of squares (S), such as [ S = sum_{k=1}^n ( x_k - bar{x})^2 ] or [ S = sum_{k=1}^... [Read more...]

With its focus on enterprise use, it’s probably with good reason that the Docker folk aren’t that interested in exploring the role that Docker may have to play as a technology that supports the execution of desktop applications, or at least, applications for desktop users. (The lack of ... [Read more...]

by Yuzhou Song, Microsoft Data Scientist R is an open source, statistical programming language with millions of users in its community. However, a well-known weakness of R is that it is both single threaded and memory bound, which limits its ability to process big data. With Microsoft R Server (MRS), ... [Read more...]

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When all you have is a hammer...Engineers and scientists, Excel is the hammer. #Rstats is a toolkit. Here's an intro. [Read more...]

Main updates to googleformr have been to remove an internal dependency on magrittr chains in the function construction and to take http status checking outside of the main gformr function and into a check_form_works function. Both changes provide notab... [Read more...]

Main updates to googleformr have been to remove an internal dependency on magrittr chains in the function construction and to take http status checking outside of the main gformr function and into a check_form_works function. Both changes provide notable speed gains. One can still create a function with ... [Read more...]

bitr_kegg clusterProfiler can convert biological IDs using OrgDb object via the bitr function. Now I implemented another function, bitr_kegg for converting IDs through KEGG API.

library(clusterProfiler)
data(gcSample)
hg <- gcSample[[1]]
head(hg)

## [1] "4597"  "7111"  "5266"  "2175"  "755"   "23046"

eg2np <- bitr_kegg(hg, fromType='kegg', toType='ncbi-proteinid', organism='hsa')

## Warning in bitr_kegg(hg, fromType = "kegg", toType = "ncbi-proteinid",
## organism = "hsa"): 3.7% of input gene IDs are fail to map...

head(eg2np)

##     kegg ncbi-proteinid
## 1   8326      NP_003499
## 2  58487   NP_001034707
## 3 139081      NP_619647
## 4  59272      NP_068576
## 5    993      NP_001780
## 6   2676      NP_001487

np2up <- bitr_kegg(eg2np[,2], fromType='ncbi-proteinid', toType='uniprot', organism='hsa')

head(np2up)

##   ncbi-proteinid uniprot
## 1      NP_005457  O75586
## 2      NP_005792  P41567
## 3      NP_005792  Q6IAV3
## 4      NP_037536  Q13421
## 5      NP_006054  O60662
## 6   NP_001092002  O95398

The ID type (both fromType & toType) should be one of ‘kegg’, ‘ncbi-geneid’, ‘ncbi-proteinid’ or ‘uniprot’. The ‘kegg’ is the primary ID used ... [Read more...]

We are delighted to announce that the programme for the 4th R in Insurance conference at Cass Business School in London, 11 July 2016, have been finalised. Register by the end of May to get the early bird booking fee. The organisers gratefully acknowledge the sponsorship of Verisk, Mirai Solutions, Applied AI, ... [Read more...]

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Plotly now supports ternary plots ! and in this post we’ll showcase how to make such charts in R. [crayon-5727c9367d4f1199297046/] Markers [crayon-5727c9367d4fe750640735/]   [crayon-5727c9367d504011620753/] Lines [crayon-5727c9367d50a578390396/] Contour [crayon-5727c9367d510780986397/] [Read more...]

by Joseph Rickert When I first went to grad school, the mathematicians advised me cultivate the habit of reading with a pencil. This turned into a lifelong habit and useful skill for reading all sorts of things: literature, reports and newspapers for example; not just technical papers. However, reading statistics ... [Read more...]