Home

Part 5 Machine Learning Backward Elimination

📅 Feb 11, 2019 · ☕ 9 min read · ✍️ Dinesh Arora

Machine learning tutorial using multiple linear regression. This post in the machine learning series will walk you through the process of automatic backward elimination and show you to improve your multiple regression model and teach you an important concept that simple is always better.

Part 4 Machine Learning Multiple Regression

📅 Feb 3, 2019 · ☕ 9 min read · ✍️ Dinesh Arora

Machine learning tutorial using multiple linear regression. This post in the machine learning series will walk you through the basics of exploring the data set and predicting the result using multiple linear regression.

Part 3 Machine Learning Understanding P Value

📅 Jan 27, 2019 · ☕ 4 min read · ✍️ Dinesh

Machine learning tutorial on Data preprocessing

Part 2 Machine Learning Simplelinear Regression

📅 Jan 22, 2019 · ☕ 5 min read · ✍️ Dinesh

Machine learning tutorial on Data preprocessing

Part 1 Machine Learning Data Preprocessing

📅 Jan 21, 2019 · ☕ 9 min read · ✍️ Dinesh

Machine learning tutorial on Data preprocessing

Spring Bean vs Spring Component

📅 Dec 30, 2018 · ☕ 3 min read · ✍️ Dinesh

The Difference Between @Bean and @Component and When to Use What? This is the most common question that new as well as experienced Spring users get confused about. There are literally hundreds of questions on this Stackoverflow. This article will clear all the confusion. Similarities between @Bean and @Autowired @Bean @Bean is an annotation based configuration and hence is used in @Configuration based class. This is an explicit way of defining a bean and is also used on the methods defined in configuration class.

Scala: Tail Recursion

📅 Mar 20, 2017 · ☕ 3 min read · ✍️ Dinesh

Tail recursion is a basic but important concept in Functional programming. Recursive functions has always been a pain point for me. I would be eliminated out of several interview rounds if interviewers places emphasis on recursion. In Java world thankfully, most people I know hate recursion because when nesting goes too deep, it impacts the performance if the nested recursion is more than 100 levels deep. Unfortunately(Fortunately), functional programming languages like Scala and Haskell have solved this concept with the term Tail Recursion.

Understanding Java 8 Lambda final finally variable

📅 Jun 16, 2016 · ☕ 3 min read · ✍️ Dinesh

I am a little late to the java 8 party and was trying to quickly get some hands on with lambdas and ran into an issue where I got the error message Variables used in lambda should be final or effectively final . I know what final is but what is effectively final. Here is what I was trying to do. I had a HashMap which had values like “one : 1”, “two : 2”, “three : 3” and wanted to replace the String ${one} with 1 etc.

How to set up Apache Storm on mac using brew

📅 Dec 26, 2015 · ☕ 3 min read · ✍️ Dinesh

I am learning about Apache Storm and the guide had long and winding instructions on how to install Apache Storm. I installed the single node using brew and it was a breeze. I did not had to spend time figuring out out if I was installing latest version. Pre-requisites: Make sure that you have ‘HomeBrew‘ installed. One reason that I prefer ‘brew’ is that I do not have to remember where things are installed and brew manages and fixes any updates that have been introduced.

Waffle : Windows Single Sign On

📅 Sep 27, 2015 · ☕ 3 min read · ✍️ Dinesh

Last week, I was working on an application where I had to do LDAP authentication. My cmpany has been using a very old jar file that had the required code for authenticating and authorizing users. There were two problems for me. I had to revisit the documentation on LDAP setting in Jboss 4 and figure how to do the set up. Making changes in login-config.xml etc. My new application is using Spring-boot, which comes with built in tomcat libraries.

4 ways to set up datasources in Jboss AS 7

📅 Jul 22, 2015 · ☕ 5 min read · ✍️ Dinesh

Last year my company decided to move from JBoss 4.x/5.x to Jboss AS 7. We use Maven and IZPack plugin to create automated deployment to Jboss 4. As a part of IZPack plugin, we would write the install.xmls for various environment, which would help us deploy war files, log.xml, jars, properties file in respective folders. So the advantage was that Jboss-4 allows you to deploy several xxx-ds.xml files in deploy folder and you can have multiple apps deployed in same Jboss and each app uses it’s respective xxx-ds.

PowerMock : How to test a private method

📅 Apr 23, 2015 · ☕ 4 min read · ✍️ Dinesh

“I HAVE THE POWER!!” – I had this feeling a few days ago. I will be honest that at work I do not get time to write unit test cases for each and every piece of code that I write. Often when I do have time, I make an effort to write test cases even for the trivial piece of code blocks such as — Check if properties file is present.

Install Or Manage multiple versions of Java on OS X

📅 Mar 30, 2015 · ☕ 3 min read · ✍️ Dinesh

A few weeks ago my Mac hard drive crashed and I had to get a new grad drive. As part of upgrade, I had to wipe my drive clean and install Yosemite. What I did not realize was that Apple had goofed up Java instlation on Mac, as result of which my IntelliJ idea compalained that it requires legacy Jdk version of Java 6. The dilemma that I had was hwo am I going to mainain the different version of Java.