Graph analysis of Stack Overflow tags with Oracle PGX – Part 2: Incremental Updates

Panagiotis Konstantinidis Data Engineering, Oracle NoSQL, Oracle PGX 0 Comments

This is the second part of our three-part blog post series (see the first part here), which deals with incremental data updates. In our scenario we assume that we acquire small batches of data updates using some kind of web scraping mechanism. We will not deal with the details of that mechanism, as it is beyond the scope of this …

Graph analysis of Stack Overflow tags with Oracle PGX – Part 1: Data Engineering

Panagiotis Konstantinidis Big Data, Data Engineering, Oracle NoSQL, Oracle PGX 0 Comments

Intoduction Oracle Parallel Graph Analytics (PGX) is a toolkit for graph analysis, both for running algorithms such as PageRank and for performing SQL-like pattern-matching against graphs. Extreme performance is offered through algorithm parallelization, and graphs can be loaded from a variety of sources such as flat files, SQL and NoSQL databases etc. So, in order to get a deeper feeling, …

Manipulating Hive tables with Oracle R connectors for Hadoop

Christos - Iraklis Tsatsoulis Hadoop, Hive, Oracle R 0 Comments

In this post, we’ll have a look at how easy it is to manipulate Hive tables using Oracle R connectors for Hadoop (ORCH, presently known as Oracle R Advanced Analytics for Hadoop – ORAAH). We will use the weblog data from Athens Datathon 2015, which we have already loaded in a Hive table named weblogs, as described in more detail …