To build career as a Hadoop developer, one must be clear with Hadoop concepts and have a working knowledge of analysing data using MapReduce, Hive and Pig. Typical Hadoop interview questions include topics such as replication factor, node failures and distributed caching.

Here are some basic hadoop interview questions

1. Define Sequence file in Hadoop?
2. What is meant by Replication factor?
3. List out the key components of HBase and tell when you…

Guest blog post by Bernard Marr

From time to time, you still come across someone with the opinion that Big Data is nothing more than a fad, which will be forgotten about soon enough.

You might not expect to hear this from me, but they’re actually right. Well – half right, at least!

As I’ve written before, I’m not actually a fan of the term “Big Data”, which puts overemphasis on the…

Originally posted here. 

In my previous blog I have explained about linear regression. In today’s post I will explain about logistic regression. 

        Consider a scenario where we need to predict a medical condition of a patient (HBP) ,HAVE HIGH BP or NO HIGH BP, based on some observed symptoms – Age, weight, Issmoking, Systolic value, Diastolic value, RACE, etc.. In this…

As companies sort out data management to facilitate analytics for better decision outcomes, they've got to optimize user experience. The ROI of these technology investments are correlated.

Legacy performance management solutions were architected for smaller, less-complex and static computing environments that did not…

Benjamin Graham’s The Intelligent Investor is considered by many, including his disciple Warren Buffet, as the finest book ever written on the subject of investing.  At the heart of Graham’s thesis is the question, “Can investors uncover intrinsic value in specific securities if…