What is scope in Rails? Scopes in Rails are special methods to run SQL queries that you can build in any rails model. A scope will always return an ActiveRecord::Relation object, even if the conditional evaluates to false , whereas a class method, will return nil. we frequently run similar…

React makes it easy to manipulate data using forms. One of the most common patterns you’ll see in React when dealing with forms is that we need to make React aware of changes to the form inputs when the user types. …

A confusion matrix is a table that is often used to describe the performance of a classification model, the result obtained from the confusion matrix is obtained by comparing the result of the test dataset for which the true values known. …

classification Introduction Logistic regression is a classification algorithm used to assign observations to a discrete set of classes. …

Introduction Sentiment Analysis is a supervised Machine Learning technique used to determine if a chunk of text is positive, negative or neutral. In text analytics, natural language processing (NLP) and machine learning (ML) techniques are combined to assign sentiment scores to topics, categories or entities within a phrase. Sentiment analysis is…

Web Scraping is a technique employed to gather large amounts of data from websites whereby the data is extracted and stored into a structured format. such technique is widely used for a range of purposes, including market analysis, machine learning, news tracking and financial data aggregation. The ability of web…