Learn data science through hands on problems

Introduction

As part of DataFest 2017, we launched a new initiative – DataHack Hour. DataHack Hour was inspired by numerous queries we get related to learning Data Science. Questions like “How to learn analytics?” or “How to become a data scientist?” are asked to us multiple time every day.

While we had written several articles on this subject on Analytics Vidhya – we needed something more definitive to answer these queries. In order to answer these queries, we decided to create an experience to show people how to learn Data Science. This version of DataHack Hour is our answer to the above questions or many more questions which come to us.

A Complete Tutorial on Tree Based Modeling from Scratch (in R & Python) from analytics vidya

Introduction

Tree based learning algorithms are considered to be one of the best and mostly used supervised learning methods. Tree based methods empower predictive models with high accuracy, stability and ease of interpretation. Unlike linear models, they map non-linear relationships quite well. They are adaptable at solving any kind of problem at hand (classification or regression).

Orange theme blogger

https://drive.google.com/file/d/0Bx_kBUn_vtwgWFNDZ3lrN2hRbVE/view?usp=sharing

Discussion with akamei

what are ACID?
what is solid in OOP?
how is transaction different from RDBMS to CASSENDRA
how is google.com resolved
why docker
where does docker store data 

Data science e books

http://www.listendata.com/2016/05/free-ebooks-on-r-python-and-data-science.html

Data Science, R, Python, Excel, and Machine Learning Cheat Sheets

Interesting article that i found only for Data Scientists and for people interested in Data Analytics.

This article refers to multiple use full blogs.

http://www.datasciencecentral.com/profiles/blogs/20-data-science-r-python-excel-and-machine-learning-cheat-sheets

Shell script to start/stop tomcat

#!/bin/bash

PATH=/sbin:/bin:/usr/sbin:/usr/bin

TOMCAT_HOME=/dev/vol1/apache-tomcat-7.0.59_PRPC719

tomcat_pid() {

  echo `ps aux | grep $TOMCAT_HOME | grep -v grep | awk '{ print $2 }'`

}

start() {

Be happy with nothing and you will be happy with every thing

A goal with out plan is just .... a wish

                                         ---antoin e de saint- exupery

Spring Table of Contents

Remove - Powered By Blogger Attribution

One of the most annoying thing on my blog was the "Powered By Blogger" in the attribution gadget.
Getting rid of it is very simple, but there is no straight way to do it from the UI that blogger provides.

This is how i got rid of it. One simple line

#Attribution1{display:none;}

Here are the detailed steps to do it

Java - The ArrayList Class

This post highlight's some of the important points about ArrayList.

• ArrayList class extends AbstractList and implements List interface
• Data structure used for ArrayList is resizable or growable arrays
• Duplicates are allowed in ArrayList
• Insertion order is preserved
• Heterogeneous objects can be inserted.
• Null values are allowed
• ArrayList is serializable
• ArrayList is clonable

Java - List and sub classes

List interface in Java is one of the very commonly used Collection Interface. 

We will look at important sub classes and methods of List Interface.

 

Redirecting my domain to my blog

I have recently brought a domain in rediff ( www.lazygeeks.in ). And this new year i have decided to blog regularly. So, i have decided to link my old standing blog to my new domain.

Here is how simple this can be done.

1) log on to your blogger.com account.
2) open settings of your blog

What is System.out.println

Hi there,

In this post, lets understand what is System.out.println, and few details about it.

Before we start with our understanding of System.out.println, let us try and understand the below java class.

public class Test{

public static String foo;

Gmail tricks

3 tricks that can will save some time and effort creating multiple accounts with Gmail.

Trick 1:

Gmail has a wildcard for the + sign as it doesn't recognize it nor any characters that follow it. This means that if you have an address likesenor.developez@gmail.com, you can use the following:

senor.developez+001@gmail.com