Java-R integration?

Question

I have a Java app which needs to perform partial least squares regression. It would appear there are no Java implementations of PLSR out there. Weka might have had something

Answer 1

Renjin is an alternative that allows not only the integration of many packages of R also a easy going communication between Java and R through objects:

http://www.renjin.org/

Answer 2

JRI has both low level and High level interface to Call R from Java. There is an eclipse plugin that helps in setting up the R Java environment at http://www.studytrails.com/RJava-Eclipse-Plugin/.

Answer 3

There has been work by Duncan Temple Lang: http://rss.acs.unt.edu/Rdoc/library/SJava/Docs/RFromJava.pdf .

My guess as to the most robust solution would be JGR. The developers of JGR have a mailing list, Stats-Rosuda and the mailing list Archive indicates the list remains active as of 2013.

There is also code that has been put up at Googlecode, with an example here: http://stdioe.blogspot.com/2011/07/rcaller-20-calling-r-from-java.html

Answer 4

FastR is a GraalVM based implementation of R. Embedding it in a JVM application is as simple as:

Context ctx = Context.newBuilder("R").allowAllAccess(true).build();
ctx.eval("R", "sum").execute(new int[] {1,2,3});

More details in this article: https://medium.com/graalvm/faster-r-with-fastr-4b8db0e0dceb

Answer 5

This seems to be an old question. However Rserve and rJava are two good packages to integrate R with Java. Following blogs explain usage of both these libraries.

For rJava: http://www.codophile.com/how-to-integrate-r-with-java-using-rjava/

For Rserve: http://www.codophile.com/how-to-integrate-r-with-java-using-rserve/

I hope this will help.

Answer 6

This is an old question.. but for anyone browsing through here that is still interested: I wrote a blog article that provides a detailed example of how to use JRI/rjava (a JNI based bridge) to do this type of thing (the how-to is focused on Linux dev environments). I also compare and contrast alternative approaches for doing 'mathy' stuff by calling out to R and similar frameworks.

URL > http://buildlackey.com/integrating-r-and-java-with-jrirjava-a-jni-based-bridge/