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Join MapR and Sonra for the Hadoop User Group Ireland Meetup on 23 February at 6 pm at the Wayra offices (O2/Three building). You’ll learn more about the MapR distribution for Apache Hadoop through use cases, case studies and an introduction to the benefits of using the MapR platform.
Come by for this content-packed first event ending with the opportunity to socialise over beer and pizza kindly provided by Sonra.
What is (more...)
A few days ago I recorded a 2-minute tech tip with Bob Hubbard of OTN.
My topic was on Predictive Queries which are a new feature in the Oracle 12c Database.
The challenge was to talk about the topic within 2 minutes. That is a lot harder than you time. Believe me.
Check out the video on the Bobs OTN 2-Minute Tech Tip channel or click on the link below.
It was fun doing this (more...)
In this blog post I want to show you how you can go about evaluating your classification models that you develop using Oracle Data Miner (part of SQL Developer).
What I'm not going to show you here is how to develop classification models using (more...)
If you want to upskill and get certified on Hadoop you can now do so for free. Thanks to MapR. Over the next couple of weeks they are rolling out their on-demand Hadoop training courses. The highlight of the first batch of courses is Developing Hadoop Applications on Yarn.
When you are working on building classification models you will need some ways of measuring the effectiveness of each model that you will build. This measurement/evaluation is perform during the model build process.
Typically the model build process consists of 2 steps (I'm assuming all data preparation etc has been completed:
As the volume of the data in your tables grows, particularly in the big data world, you may run into some memory issues or package restrictions with pulling down the tables to your R environment.
Some of the R packages and drivers have some recommended numbers or limits for the number of records that can be fetched.
In the following example I'm looking at downloading a table with 300K records from an Oracle Database. I've (more...)
Using the data from pwcmoneytree.com and easy to use dashboard software we perform analytics on a huge dataset that spans 20 years of Venture capital investment data from 1995 onward. Having data that goes far into the history should give us enough to extract the necessary analytical juice out of it.
The year 2000 was definitely the peak for VC investment craziness. A whopping 105 Billions was pumped into startups and bringing them (more...)
The following is not something new but something that I have put together this evening, and I mainly make the following available as a note to myself and what I did. If you find it useful or interesting then you are more than welcome to use and share. You will also find lots of similar solutions on the web.
This evening I was playing around the the Text Mining (tm) package in R. So I (more...)
Lot of the entities have already paid the amount back to the government with interest and the government has made profits! Government has also lost money on lot of other organizations/companies that failed to repay back.
Checkout the full Visualization on the profit/loss analysis of Government Bailout money
And Here is the big list of all companies/organizations that made profit/loss and the percentage
Click on the image to see the full list
As 2014 draws to a close I working on finishing off a number of tasks and projects. One of these tasks is an annual one for me. The task is to list all the things I've done as an Oracle ACE Director. If has been a very busy year, not just with ACE activities but also work wise too. That will explain why I have been a bit quiet on the blogging side of things (more...)
If you are downloading the EA1 of SQL Developer that includes Oracle Data Miner (ODMr), and you intend to use Oracle Data Miner then you will need to update the ODMr Repository.
You could do it the hard way and run the upgrade repository sql scripts that are located in the ...sqldeveloper-184.108.40.206.29-no-jresqldeveloperdataminerscripts directory.
Or you could do it the easy way and let the inbuilt functionality in Oracle Data Miner do (more...)
These days Hortonworks with their IPO and Cloudera sitting on $1bn of cash grab all the headlines. However,the real visionary in the field is someone else. Someone blasting the previous world record in TeraSort . A Hadoop distribution on both Amazon Web Services and the Google Compute Engine. A company that Google is invested in. While their competitors have been in skirmishes with each other, MapR has been quietly working away and innovating.
A few days ago the first Early Adaptor release of SQL Developer 4.1 (EA1) was made available. You can go ahead and download it from here and make sure to check out the blog post by Jeff Smith on some install and setup that is required around the latest version of Java.
I've been using SQL Developer since its very first release, so getting my hands on a new release is very exciting. There (more...)