Blog Archives

The future of R on the web at #user2014

June 27, 2014
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The future of R on the web at #user2014

The schedule and abstracts for useR! 2014 have been posted on the conference website. Session 2 (tuesday 1pm) of the Kaleidoscope track will feature a fantastic set of talks about R and the web, including RCloud (Gordon Woodhull, AT&T), Ope...

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Deploying a scoring engine for predictive analytics with OpenCPU

June 23, 2014
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Deploying a scoring engine for predictive analytics with OpenCPU

TLDR/abstract: See the tvscore demo app or this jsfiddle for all of this in action. This post explains how to use the OpenCPU system to setup a scoring engine for calculating real time predictions. In our example we use the predict.gam function from the mgcv package to make predictions based...

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Paper: The OpenCPU system – towards a universal interface for scientific computing through separation of concerns

June 20, 2014
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Paper: The OpenCPU system – towards a universal interface for scientific computing through separation of concerns

This week a new paper appeared on arXiv titled: The OpenCPU System: Towards a Universal Interface for Scientific Computing through Separation of Concerns. It is based on a chapter of my thesis and provides a conceptual introduction to embedded...

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OpenCPU Gem for Ruby

May 22, 2014
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OpenCPU Gem for Ruby

The guys from roqua.nl are working on a OpenCPU wrapper Gem. This simple API client provides a pretty nice basis for building R web applications with Ruby. A minimal example from the readme: client.execute :digest, :hmac, { key: 'foo', object: 'bar', algo: 'md5' } # => Which performs the following JSON RPC...

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OpenCPU release 1.3 and 1.4

April 20, 2014
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OpenCPU release 1.3 and 1.4

After a few months of testing we present OpenCPU versions 1.3 and 1.4. These releases do not introduce any major changes in the OpenCPU HTTP API but focus entirely on performance, reliability and security to support long running servers. The on...

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Getting ready for OpenCPU 1.3

March 17, 2014
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Getting ready for OpenCPU 1.3

The OpenCPU public demo server and ocpu.io have been upgraded to an early version of the upcoming OpenCPU 1.3 release. This release is scheduled for April 17 along with Ubuntu 14.04 (Trusty). By deploying it on the public demo server we get som...

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OpenCPU 1.2.3 release

March 12, 2014
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OpenCPU 1.2.3 release

A new version of OpenCPU was released to CRAN and Launchpad. Besides some minor bugfixes, the single-user has better support for configuration. By default, the single-user server will now load configuration from the following file: path.expand("~/.opencpu.conf") If this file does not exist, the default configuration is used. Future plans This is likely the...

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Release of jsonlite 0.9.4

March 2, 2014
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Release of jsonlite 0.9.4

A new version of the jsonlite package was released to CRAN. In addition to adding small new features, this release cleans up code and documentation. Some annoying compiler warnings inherited from RJSONIO are fixed and the reference manual is a bit more concise. Also some new examples of public JSON...

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Call for abstracts to present at useR! 2014

March 2, 2014
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We are happy to inform you that abstract submission for useR! 2014 is now available online, see http://user2014.stat.ucla.edu/ The R User Conference, useR! 2014 is scheduled for July 1-3, 2014 at the University of California, Los Angeles. Before the official program, half-day tutorials will be offered on Monday, June 30. Participants are encouraged to submit The post

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Publishing dynamic data on ocpu.io

February 16, 2014
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Publishing dynamic data on ocpu.io

Suppose you would like to publish some data, for example to accompany a journal article. One way would be to put a CSV file on your website, and share the URL with your colleagues. However CSV has many limitations: it only works for tabular structures, has limited type safety (pretty much everything...

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