Big Data - Kapil Sharma (101)

Big Data consists of five types:

1. Volume

2. Velocity 

3. Variety 

4. Veracity 

5. Value  

More than 90% of big data set created in last 3+ years.

To process this huge data set of unstructured data, big data frameworks comes in picture. 

To retrieve value from processing, computing and analysis data leads to the unique value addition. 

Basic Data Science Introduction (C-01) - Kapil Sharma

Vectors: 
The vector is a very important tool in R programming. Through vectors we create matrix and data-frames. Vectors can have numeric, character and logical values. The function c() is used to create vectors in R programming.

x <- c(2,22,"xyz", -4)

Factors:
They are same like vectors but they have different meaning.
 y <- c(1,2,3,4,5,6,7)
yf<- factor(y)
yf

Lists:
They are vectors, but they consists of different data sets.
a <- c(dog = "pitbull", age = 100, color = "golden", weight = TRUE)

Matrices:
They are vectors with more than one dimensions, consists of rows and columns (ncol,nrow).
They can be rowbind (rbind()) or column bind (cbind())

# Create matrix with 4 elements:
cells <- c(3,5,16,29)
colname <- c("Jun", "Feb")
rowname <- c("Nut", "Orange")
y <- matrix(cells, nrow=2, ncol=2, byrow=TRUE, dimnames=list(rowname, colname))

              Jun   Feb
Nut         3      5
Orange  16    29

Datasets:
It is same like matrix, but it also consists of numeric and character elements.
Location <- c("Mandi", "Manali")
Distance <- c(200, 307)
df <- data.frame(a,b)
df

Location Distance
Mandi 200
Manali 307

R Programming Tutorial, Vectors, R-06 - Kapil Sharma

R Programming Tutorial, Data and its types, R-05 - Kapil Sharma

R Programming Tutorial, Variables In RStudio, R-04 - Kapil Sharma

R Programming Tutorial, RStudio IDE Download and Installation, R-02 - Kapil Sharma

R-Programming Tutorial, R-01, Setup And Installation - Kapil Sharma

BigData Useful URL's - Kapil Sharma

BigData Useful URL's

1. http://aws.amazon.com/big-data/
2. http://aws.amazon.com/training/course-descriptions/bigdata-fundamentals/
3. http://www.hadoopexam.com/
4. http://www.cloudera.com/content/cloudera/en/training/library/developers.html

What is Scrum?

Scrum is a methodology developed under Agile framework. The main people behind this methodology are 'Ken and Jeff'. They are the seasoned software developers.  

For example, think like 'Agile' is an umbrella and 'Scrum' is one edge of that framework.  

Generally scrum methodology used in software development through out the globe. 
The name scrum from a sport known as rugby : ) 

A scrum team having these following player or members:
1.) P.O: Product Owner
2.) SM: Scrum Master
3.) Team: Developers + QA