213 search results for "evaluation"

Late-April flotsam

April 25, 2012
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Late-April flotsam

It has been month and a half since I compiled a list of statistical/programming internet flotsam and jetsam. Via Lambda The Ultimate: Evaluating the Design of the R Language: Objects and Functions For Data Analysis (PDF). A very detailed evaluation … Continue reading

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Case Study: Network visualization with data from a 360° feedback – often wasted potential!

April 13, 2012
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Case Study: Network visualization with data from a 360° feedback – often wasted potential!

I assume that the reader of this paper knows the 360-degree method (also known as: multi-source feedback or management feedback). Reported is an authentic case. A total of 128 people participated as feedback receivers. Several thousand questionnaires were filled from … Weiterlesen →

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How R Searches and Finds Stuff

April 4, 2012
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How R Searches and Finds Stuff

Or… How to push oneself down the rabbit hole of environments, namespaces, exports, imports, frames, enclosures, parents, and function evaluation? Motivation There are a few reasons to bother reading this post: Rabbit hole avoida...

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PK models in R and in Julia

March 29, 2012
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1.1 Pharmacokinetic models with an analytic solution Pharmacokinetics is the study of the absorption and elimination of drugs and their metabolites in the body. As described in the wikipedia article there are several parameters, such rate constants,...

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Liking of apples – some data to link

March 15, 2012
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Liking of apples – some data to link

I browsed through a paper by Peneau et al. (J. Sensory Studies, 2007) where they have nice data on apples; consumer evaluation, sensory evaluation and instrumental measurements. I think these are interesting data to examine if these variable blocks can...

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A Graphical Explanation of how to Interpret a Dendrogram

March 15, 2012
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A Graphical Explanation of how to Interpret a Dendrogram

Dendrograms are a convenient way of depicting pair-wise dissimilarity between objects, commonly associated with the topic of cluster analysis. This is a complex subject that is best left to experts and textbooks, so I won't even attempt to cover it her...

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Call for chapters: Data Mining Applications with R

March 15, 2012
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Call for chapters: Data Mining Applications with R

Data Mining Applications with R A book to be published by Elsevier http://www.RDataMining.com/books/book2 Proposal Submission Deadline: April 30, 2012 Introduction R is one of the most widely used data mining tools in scientific and business applications, among dozens of commercial … Continue reading

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Pathway Analysis for High-Throughput Genomics Studies

March 6, 2012
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Pathway Analysis for High-Throughput Genomics Studies

I get a lot of requests in the core about running a "pathway analysis." Someone ran a handful of gene expression arrays, or better yet, ran an RNA-seq experiment (with replicates!). These, and many other kinds of high-throughput assays (GWAS, ChIP-seq,...

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DEoptim in Parallel

March 4, 2012
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Running DEoptim in parallel has been on the development team's wishlist for awhile.  It had not been a priority though, because none of us have personally needed it.  An opportunity arose when Kris Boudt approached me about collaborating to a...

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The German DIN33430 – Analysis of acceptance with R

March 2, 2012
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The German DIN33430 – Analysis of acceptance with R

The german DIN33430 defines quality standards that must be met in “job-related proficiency assessments”, the qualifications of the responsible parties involved, as well as the creation, execution and evaluation of such assessments. Licensed persons are published on a website (german). … Weiterlesen →

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