R software and its useful tools for handling big data

In recent years, industries such as finance, healthcare and Information and communication technology (ICT) industries have witnessed dramatic changes as a result of big data phenomenon.  In fact, a recent report by Consumer News and Business Channel (CNBC) (2015) highlighted the role of big data in the real estate sector and explained its evolution. This then has provided analysts with opportunities to restructure raw data and offer related solutions (Catella, 2015). Hence, the role of R software in identifying basic patterns in unstructured big data cannot be underestimated. This is because it helps in standardization of unfamiliar characteristics as well as estimation of important parameters (CoreLogic, 2013) .

Furthermore, R software has plenty of packages and is unique in handling big data. Therefore it can handle both the structured and unstructured data. This makes it suitable for big data analysis also.

Simultaneous dataset handling

There are many advantages of R software which include its different packages to manage large datasets simultaneously for interactive data analysis. One of the package, BIGMEMORY, helps in implementation of basic manipulation of data by supporting different data types such as double, integer, short and char (Emerson & Kane, 2009). Consider an example of dataset on real estate containing different columns:

#generate the package

library(bigmemory)

#importing the dataset

x <- read.big.matrix("data.csv", sep = "\t", type = "integer", shared = TRUE,                                                       col.names = c("age", "income", "rent", "builtyear", areaincome"))

#calculating summary of the research

summary(x)

Thus, the above commands help in storing and solving problems related to big datasets; the latter is broken into simpler parts for further analysis. In the following, data reduction packages to retain only relevant variables for the study are explored.

Data reduction packages

The section below discusses what makes R an effective software. It is because its packages undergo continuous development to solve a particular problem. Additionally, R software’s advanced data reduction tools help in decluttering data in order to provide a clear perspective of the study. Hence, regular use of data cleaning tools, estimating and replacing values prepare the dataset for analysis and modeling. Note also that packages such as dplyr simplify complex data through a coding system:

#generate the package

library(dpylr)

#select a subset of rows in a data frame

filter()

#reorders rows as per labels

> arrange ()

#zooms into useful subset in numeric data

 select()

#identify unique values in the table

distinct()

#collapse data frame in a single row

summarise()

#take a sample of rows (fixed number)

sample_n()

 

R software helps in plotting the residual value

Residual plot on grouping of variable using R software

Statistical modeling    

The R software has powerful tools for different regression models such as linear regression, Analysis of Variance (ANOVA), Analysis of Covariance (ANCOVA), logistic regression, log linear regression, binary logistic regression and others (Buechler, 2007).

Fit a linear regression model:

>Fit<- lm( y~ x)            #where y is dependent variable #x is independent variable

Fit a one way anova model :

>Fit1<-aov(y~x)       # where y is dependent variable #x is independent variable

Interpretation through graphical representation

The section below discusses Graphical User Interface (GUI) programming languages. Among all the software, R software is considered an effective language in understanding data through graphs and references. Its graphics package show a diagrammatic representation of barplots, histograms, stem and leaf plots and others. Furtheremore, other packages for interactive graphics can be developed using ggplot, ggvis, dygrpahs, digrammeR or threeJS  (Grolemund, 2017).

R can be used to show the graphical representation of variables

Figure: Plotting of variable using R

One should note that the packages have different tools that help in identifying several patterns through simultaneous data handling and applying data reduction techniques. Although R is a well established language for statistical analysis and to develop data mining algorithms, it is a memory-bound language and stores limited data which necessitates the need for extended memory (Rickert, 2011). In conclusion, its limitations are  related to statistical procedures. However, the program being open source software, is an effective tool to map future trends(Kelley, Lai, & Wu, 2008).

 References

Sunidhi Duggal

Sunidhi Duggal

Research analyst at Project Guru
Sunidhi is a master in Statistics and is expanding her boundaries in statistical research and analysis. She has contributed to Government projects such as, 'Complication of the Advanced Estimates of the GVA of Crop Sector' with the Ministry of Statistics and Programme Implementation. She is highly experienced in Analysis of Variance (ANOVA) andStatistical Quality Control (SQC). She wishes to engross herself in research and understand her limitations. She is a foodie and loves to try new cuisines in her spare time. She loves to travel and explore unchartered places.
Sunidhi Duggal

Related articles

  • Understanding big data and its importance Complex or massive data sets which are quite impractical to be managed using the traditional database system and software tools are referred to as big data.
  • Introduction to SPSS and using it SPSS is an acronym for “Statistical Package for Social Science” and is a Windows based program which is used to perform different tasks like, data entry, analysis and further presentation of results through tables and graphs.
  • Need for digitisation of healthcare in Uttar Pradesh Based on the report of the World Bank which emphasised on the need to develop the healthcare sector of India, the project Uttar Pradesh Health system Development Project (UPHSDP) was launched.
  • Importing data to STATA STATA comes with a set of sample data files. This helps the learner in understanding how different set of tests can be applied to single data.
  • Importing data and creating datasheet in SPSS SPSS spreadsheet helps in entering respondent data and conducting statistical tests just like one does using Microsoft Excel spreadsheet.

Discuss

We are looking for candidates who have completed their master's degree or Ph.D. Click here to know more about our vacancies.