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Brier Score – How to measure accuracy of probablistic predictions

Brier score is an evaluation metric that is used to check the goodness of a predicted probability score. This is very similar to the mean squared error, but only applied for prediction probability scores, whose values range between 0 and 1. Overview In this tutorial, you will understand: What is Brier score? How is Brier …

Python Regular Expressions Tutorial and Examples: A Simplified Guide

Regular expressions, also called regex, is a syntax or rather a language to search, extract and manipulate specific string patterns from a larger text. It is widely used in projects that involve text validation, NLP and text mining. Regular Expressions in Python: A Simplified Tutorial. Photo by Sarah Crutchfield. 1. Contents Introduction to regular expressions …

Evaluation Metrics for Classification Models – How to measure performance of machine learning models?

Choosing the right evaluation metric for classification models is important to the success of a machine learning app. Monitoring only the ‘accuracy score’ gives an incomplete picture of your model’s performance and can impact the effectiveness. So, consider the following 15 evaluation metrics before you finalize on the KPIs of your classifier model. Introduction: Building …

Logistic Regression – A Complete Tutorial With Examples in R

Logistic regression is a predictive modelling algorithm that is used when the Y variable is binary categorical. That is, it can take only two values like 1 or 0. The goal is to determine a mathematical equation that can be used to predict the probability of event 1. Once the equation is established, it can …

How to implement common statistical significance tests and find the p value?

How to implement and interpret the commonly used statistical significance tests in R? Understand the purpose, when to use and how to interpret the test results and the p value. Correlation Test and Introduction to p value One Sample t-Test Wilcoxon Signed Rank Test Two Sample t-Test and Wilcoxon Rank Sum Test Shapiro Test Kolmogorov …

Complete Introduction to Linear Regression in R

We have covered the basic concepts about linear regression. Besides these, you need to understand that linear regression is based on certain underlying assumptions that must be taken care especially when working with multiple Xs. Once you are familiar with that, the advanced regression models will show you around the various special cases where a …

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