CategoriesProgramming Tags Machine Learning OpenCV R Programming OpenCV is a library of programming functions mainly aimed at real-time computer vision. Originally developed by Intel, it was later supported by Willow Garage then Itseez. The library is cross-platform and free for use under the open-source BSD license. Before starting you can ... [Read more...]

Version 1.1.1 of the rhub package has been released on CRAN! rhub allows to check packages on R-hub package builder, or on local Docker images, without leaving R. Get rhub’s latest version from a safe CRAN mirror near you: install.packages("rhub") This release, compared to rhub 1.0.2, should improve user ... [Read more...]

I saw a chart yesterday, a chart without frame, without title or captions just a very hidden chart at bottom of the web page. It will be a nice time to get the most interesting visual features of it. [Read more...]

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A new version of Rblpapi arrived at CRAN today as version 0.3.10. It regroups several sets of changes (see below). The most notable addition is an extension to use B-PIPE for high-performance bulk data access (in case you are provisioned for it) cont... [Read more...]

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Click the Slides button above to demo Academic’s Markdown slides feature. Supplementary notes can be added here, including code and math. [Read more...]

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I have been playing around with historical newspapers data for some months now. The “obvious” type of analysis to do is NLP, but there is also a lot of numerical data inside historical newspapers. For instance, you can find these tables that show the market prices of the day in ... [Read more...]

From the recent developer.r-project.org “Staged Install” article: Incidentally, there were just two distinct (very long) lists of methods in the warnings across all installed packages in my run, but repeated for many packages. It turned out that they were lists of exported methods from dplyr and rlang packages. ... [Read more...]

Version 0-1.17 of the Rborist package is building successfully on CRAN. This is the last of the 0-1 series; future versions will instead employ a more conventional API numbering scheme. Two new command-line options have been introduced. Option nThread permits limiting the number of OpenMP threads employed in parallel regions ... [Read more...]

OK, no stats today, just fidgeting about with graphics devices and type faces. Caveat - the details of graphics formats and typefaces is not my area of real expertise, this blog post is me noting down things that I found useful and others might too. As... [Read more...]

Pareto-NBD Customer Lifetime Value Posted on 6 April, 2019 by Brian Tags: customer lifetime value, pareto-nbd, smc Category: customer_lifetime_value Suppose you have a bunch of customers who make repeat purchases - some more frequenty, some less. There are a few things you might like to know about these customers, such ... [Read more...]

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