How To Build An App Like Duolingo

By Shaun Kennedy • January 25, 2021 • 0 Comments

Duolingo came on the scene in 2011 operating as a teach and translate language learning app. It has since transformed into a $700+ million business, and become the first EdTech app to top $140 Million in annual revenue. Pretty good numbers, for a language learning app that still doesn’t charge

Experimenting with Airflow to Process S3 Files

By Mikaela Pisani • January 8, 2021 • 0 Comments

As machine learning developers, we always need to deal with ETL processing (Extract, Transform, Load) to get data ready for our model. Airflow can help us build ETL pipelines, and visualize the results for each of the tasks in a centralized way. In this blog post, we look at some

Understanding Statistics for Machine Learning Models

By Mikaela Pisani • November 19, 2020 • 0 Comments

If you want to understand machine learning algorithms, it is very important to understand basic statistics and what is behind them. Understanding how the algorithm operates gives you the option of configuring the model according to what you need, as well as explaining with more confidence the results obtained from

Using Ensembles to obtain better predictions

By Mikaela Pisani • November 10, 2020 • 0 Comments

In statistics and ML, ensemble methods use multiple learning algorithms to obtain better predictive performance than could be obtained from any of the constituent learning algorithms alone.

A Prediction Experiment With Machine Learning

By Bruno Michetti • July 17, 2020 • 0 Comments

I recently participated in a Machine Learning workshop at Rootstrap, where my coworkers and I learned about the basics of data science, did some research, and created interesting experiments. We had the opportunity to choose among the studied Machine Learning algorithms and work with them. So, I decided to do

Gentle Introduction to the Bias-Variance Trade-Off in Machine Learning

By Mikaela Pisani • June 22, 2020 • 0 Comments

Whenever you want to analyze the performance of machine learning algorithms, you would need to study the root cause of the error. Concepts like bias and variance would help you understand this cause and give you insights on how to improve your model. What is Bias error? Bias error corresponds

MACHINE LEARNING – CHAPTER 1 – Introduction

By Mikaela Pisani • May 11, 2020 • 0 Comments

Machine learning is one of the hottest topics nowadays. People talk about machine learning as if it is magic. Organizations are racing to integrate machine learning into their functions. Everyone talks about it, but not too many people know what it really is. It is just math and statistics plus

Initial Coronavirus outbreak in France and South Korea

By Mikaela Pisani and Anthony Figueroa • April 27, 2020 • 0 Comments

We are currently experiencing the negative impacts of the novel Coronavirus. This virus has quickly changed our lives and has left many of us feeling confused and fearful of what’s to come. As engineers and data scientists – we want to help make sense of the overwhelming amount of data

Understanding Basic Statistics for Machine Learning Models – Part 3

By Mikaela Pisani • April 27, 2020 • 0 Comments

In this article you can find explanations for statistical concepts such as Statistical hypothesis test, used for answering questions about sample data and validating assumptions. In addition, it is provided a list of concepts regarding sampling distribution. Finally, we discuss the relationship between variance and bias. Statistical hypothesis testing States

Understanding Basic Statistics for Machine Learning Models – Part 2

By Mikaela Pisani • April 20, 2020 • 1 Comment

In this article, you will find basic information about distributions. It is expected that you have some knowledge about random variables and probability concepts such as variance, covariance, and expected value. You can find that information on Understanding Basic Statistics for Machine Learning Models – Part 1. What is a