In this blog post, we will learn from Zillow’s incident and understand how ML monitoring tools can help you detect the early effects of model performance decay and data drift. In November 2021, the American real-state company Zillow reported a loss of almost $500 M. …

Here is a list with 10 of the most common data science interview questions for junior positions. Interviewers usually focus on Statistics fundamentals and Machine Learning concepts. Q1. What two parameters define a normal distribution? Answer: It’s mean and it’s standard deviation. Q2. What is One Hot Encoding? Answer: The process to encode/transform data into an sparse vector in which one element is set…

Spoiler alert I learned nothing. Every interviewer was nice and friendly. But most of the interviews had these awkward silences that I assume are normal(?). As an introvert, I never know how to fill these gaps in the conversation. During and after each interview I felt like a fraud. And…

Three years ago (back when teaching RNNs to generate text was cool) I had this idea of training a TensorFlow model with Harry Potter’s books. This project was on my list and it was hunting me. This weekend I finally did it and also made a simple Streamlit app for…

Un día de estos me puse a pensar por dónde empezaría a aprender machine learning y data science si tuviera que comenzar de nuevo. Y lo vacilón de este ejercicio es que la ruta que me imaginé no fue nada similar a la que hice en su momento. Estoy consciente…

The other day I was taking a shower and a thought came to me: How many times can I exchange a dollar to Colones (Costa Rican currency) then back to dollars and then to colones and so on until I have no money left? I got out the shower and…

Sí, todos tenemos proyectos que no hemos terminado. Deambulan en nuestra cabeza, solo para hacernos sentir mal con nosotros mismos. Pero a pesar de que es común y a todos nos pasa, no esta bien. No hay sentimiento como el de ponerle el último punto a un blog post. Corregir…

¿Existe una alternativa más rápida que un blog y más eficiente al largo plazo que pagar anuncios? — Es vacilón ponerse a ver como las marcas en Costa Rica se intentan acercar a los consumidores, muchas de sus estrategias se resumen en comprar nuestra atención, invierten millones de colones al año en anuncios que nos llegan por todo lado y nosotros de “repugnantes” intentamos consciente o inconscientemente no…