Nitin Solanki

How to create a function to create K values with train and test accuracy in Python

Let us create an empty list which will contain the training and testing accuracy and the respective k values. The following code will generate the k values along with the training and testing accuracy. # creating empty list variable acc = [] # running KNN algorithm for 3 to 50 nearest neighbours(odd numbers) and #…

Data Science

Answered Dec 17, 2019 · 1.7K Views Read answer →

Explain Curse of dimensionality

Curse of dimensional mostly occurs in algorithms like KNN which completely depends on distances. High dimensional spaces are obviously largely and points in such spaces disperse from each other. We will evaluate the curse of dimensional with 1000 observations with the change in dimensions. Let us import the libraries…

Data Science

Answered Dec 17, 2019 · 2.0K Views Read answer →

What are classes and objects in python?

Python supports the OOPs concept instead of Procedural oriented language where the focus is on functions, whereas object-oriented programming language concept focused on objects. The collection of variables and function/methods is known as an object that acts on data and class is a technical drawing of the object. For…

Data Science

Answered Dec 15, 2019 · 1.7K Views Read answer →

Explain step by step procedure to install R and R studio.

R is very easy and free to install in any operating system. For installing R in Windows, we use the following step First visit a website named www.r-project.org Open a location close to you and click on the link given Select on the “Download R link for OS” on the top of the page Select the file having the latest…

Data Science

Answered Dec 13, 2019 · 1.8K Views Read answer →

How to find out the range of vectors given below using R?

(1, 8, 2, 6, 3, 8, 5, 5, 5, 5) To find out the range of vectors, we need to find out the maximum and minimum of numbers.Let us assign to a variable x x=c(1, 8, 2, 6, 3, 8, 5, 5, 5, 5) Now range is known as the difference between maximum and minimum of numbers.So we can use the following to find out the range…

Data Science

Answered Dec 12, 2019 · 1.6K Views Read answer →

Explain with an example how to merge dataframes in R.

Let us create two data frames author and books We will be creating dataframes that contain names of authors along with the surnames and the nation they belong. Later on, we will be merging the dataframes ## use character columns of names to get sensible sort order authors

Data Science

Answered Dec 12, 2019 · 1.8K Views Read answer →

How to extract the named entities using polyglot?

Polyglot recognizes three types of entities Persons (Tag: I-PER): politicians, scientists, artists, athletes, etc. Organizations (Tag: I-ORG): sports teams, newspapers, banks, universities, schools, non-profits, companies, etc. Locations (Tag: I-LOC): cities, countries, regions, continents, neighborhoods,…

Data Science

Answered Dec 5, 2019 · 1.7K Views Read answer →

How to perform multiple linear regression in R? Explain with an example

data

Data Science

Answered Dec 2, 2019 · 1.6K Views Read answer →

Explain with a case study how to use logical operators to select subset of a data based on condition in R.

Let us use a mt cars datasets inside R df

Data Science

Answered Dec 2, 2019 · 1.5K Views Read answer →

How to retrieve tokens by indexing and slicing?

To retrieve tokens by indexing, we need to enter the correct position of the token present in the sentence.In the sentence assigned to ‘doc5’ the word ‘better’ lies in the third position.Since indexing in python starts from 0,so the index position of the third token will be 2 Similarly slicing can get us a list of…

Data Science

Answered Nov 28, 2019 · 1.8K Views Read answer →

What are the advantages of transformation based learning?

The advantages of Transformation Based Learning are a) It can easily learn small set of rules required for tagging b) Bugging and development is easy in this technique c) Tagging complexity can be reduced due to interlacing of machine learning and human generated rules. d) It is faster tagger techniques compared to…

Data Science

Answered Nov 28, 2019 · 2.0K Views Read answer →

A user has a list of dataframes and he wants to convert it into single dataframe.How to do that?

listOfDataFrames

Data Science

Answered Nov 18, 2019 · 1.6K Views Read answer →