Installing RStudio & additional R packages in Oracle Big Data Lite VM 4.2.1

Christos - Iraklis TsatsoulisR Leave a Comment

I was very happy to find out that, in the latest version (4.2.1) of Oracle Big Data Lite VM, all the R-related issues I had located and reported in the past (see here and here) have been resolved. Nevertheless, some new issues have emerged. Below are my findings and workarounds (if you are in a hurry, feel free to jump …

Athens Datathon 2015: exploratory data analysis for anomaly detection & data quality

Christos - Iraklis TsatsoulisData Science, Exploratory Data Analysis, R 8 Comments

Together with my friend and former colleague Georgios Kaiafas, we formed a team to participate to the Athens Datathon 2015, organized by ThinkBiz on October 3; the datathon took place at the premises of Skroutz.gr, which was also the major sponsor and the data provider. It was the second such event organized in Athens, and you can see the Datathon …

Installing rJava R package in Oracle Linux

Christos - Iraklis TsatsoulisR 1 Comment

The Oracle Big Data Lite (BDLite) VM is a handy and convenient platform for testing, development, and training on the related tools and technologies, such as Cloudera Hadoop, Oracle NoSQL database, Oracle SQL Developer & Data Modeler etc. Among other things, it includes a full distribution of the Oracle R Enterprise (ORE) and the Oracle R Connectors for Hadoop (ORCH). …

Undocumented behavior of ore.make.names() function in Oracle R Enterprise

Christos - Iraklis TsatsoulisOracle R 2 Comments

While working with some data in Hive recently using the Oracle R Connectors for Hadoop (ORCH), I tried to use the ore.make.names function (of package OREbase ). The function creates valid column names for ore.frame objects. Here is a reproducible example, copied straight from the function documentation: Experimenting a little, I discovered that ore.make.names becomes functional after executing ore.connect. Indeed, …

Oracle R Enterprise issues in Oracle Big Data Lite VM 4.1.0

Christos - Iraklis TsatsoulisOracle R 4 Comments

In the previous post, we examined some configuration issues with Cloudera Manager and Hadoop services in the latest release of Oracle Big Data Lite VM (4.1.0). In this post we report issues with Oracle R Enterprise, and the remedies we applied. It turns out that if we load the ORE package in R, we subsequently cannot use the help system …