Linear regression Linear regression is a supervised learning algorithm and tries to learn a linear function from a given data set D={(xi, yi)} where i=1, 2, 3, 4,———–N where xi is feature vector and yi is target output. In other words, you will try to find out relationship between xi and yi. Suppose you want to
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In Python you can create an abstract class using library, but by default there are not any mechanisms to provide abstract classes. A class is called abstract if it has abstract methods, an abstract method has not any definition , definition should be implemented by the child class which inherits it. See the example below
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Structured Query Language (SQL) is de facto language for storing and retrieving structured data from a table. In this post, we will create a database organization and inside this database we create the following table. Below SQL code creates a table and inserts 5 records into Employee table. CREATE DATABASE if not exists organization; USE
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Python is an object-oriented language and a class can have properties and methods. In this post, I will create a simple class having a constructor __init__() and four methods namely mysum(), mymul(), mydiv() and mysub(). Moreover, they compute addition of two numbers, multiplication of two numbers, division of a number by another and subtraction of
Mathematical Operations in Python using Object-Oriented Programming in Python Read More »
R programming language is very popular for data science, machine learning and statistical computing. Furthermore, the syntax of R is very simple and easy to learn. In this pots, I am going to make a simple program in R which will add two numbers. a<-12 b<-13 c<-a+b print(c) In the above program, two numeric vectors
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Sometimes you may need to update table in SQL which you have created. For this you need to use UPDATE command with SET option. In this post, you will know that how you can update a record of SQL database. You can see in the below program that a database school is created and inside
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An array in Java is a collection of values having contiguous memory locations and share a common name. Suppose you want to create an array of five numbers having data type integer and array name in num. So, first you need to declare as int num[]; Second, you need to allocate memory using new operator
Generators in Python are like ordinary function the difference that it contains yield statement instead of return. Furthermore, when a function encounters an yield statement it pauses execution of function and saves the state of the function. And when function is called again it starts from the next statement where it was paused. See the
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Suppose that in Python you want to expand an expression (x+y)2 to x2 + y2 + 2 xy, this can be done using sympy library in Python, first of all see a simple program. from sympy import * x = Symbol(‘x’) y = Symbol(‘y’) z=(x + y)**2 print(expand(z)) Output:- x**2 + 2*x*y + y**2 How
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COUNTIF() and SUMIF are very important functions in excel which are used to automate manual tasks. Furthermore, these functions are frequently used in finance and accounting. In this post, I am going to explain working of these two functions. COUNTIF() function- This function counts the values of a column when a condition if fulfilled
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