In my previous blog post I showed you how you can have a look at the transformations that the Automatic Data Preparation (ADP) feature of Oracle Data Mining produces. I also gave some example of the different types of ADF that are performed for different algorithms.
One of the features of the transformations produced is that it will generate a REVERSE_EXPRESSION. This will take the scored results and apply the inverse of the transformation that (more...)
A very powerful feature of Oracle Data Mining and one that I think does not get enough notice is called Automatic Data Preparation.
Data Preparation is one of the most time consuming, repetitive and boring parts of the work that a Data Miner or Data Scientist performs as part of their daily tasks. Apart from gathering the data, integrating the data, getting the data into the required formation the most interesting part of the work (more...)
The headline articles of Oracle Magazine for Fall 1987 (the Second issue) were on Enhancing cellular communications for Canadian Cellular, using Oracle to combat predatory starfish on Australia's Great Barrier Reef and breaking the 640K barrier using powerful microcomputers.
Everyone is talking about advanced analytics? Yes that is true.
Everyone is an expert in advanced analytics? This is so not true. Watch out for these Great Pretenders. You know what I mean! You know who I mean! Maybe you know some of them already? If not, watch out for these Great Pretenders!!!
Some people are going around talking about data mining, predictive analytics, advanced analytics, machine learning (more...)
Over the past couple of months Oracle has been releasing some EA (Early Adopter) versions of a new tool that is currently called SQL Command Line.
The team behind this new tool is the SQL Developer development team and they have been working on creating a new command line SQL tool that is based on some of the technology that is included in SQL Developer.
SQL Command Line in an stand alone tool and all (more...)
The annual Oracle User Group in Ireland Conference will be on Thursday 19th March. This year the conference will be held in the Croke Park conference centre. This conference centre is only a short taxi ride from Dublin Airport and Dublin City Centre. If you are planning a hotel stay for the conference I would recommend staying in a hotel in the city centre and get a taxi to/from the conference venue. We have a (more...)
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:
Build the model: During this step you will feed in a portion of your data set to the data mining algorithm. Typical this data (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...)
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...)