The implementation part! — In the first part of this series of blog posts, we have discussed a lot of things related to the concepts you need to know before performing hyperparameter tuning experiments, including: Evaluating Machine Learning Models Introducing Hyperparameter Tuning Exploring Exhaustive Search Exploring Bayesian Optimization Exploring Heuristic Search Exploring Multi-Fidelity Optimization

Concepts you need to know before performing hyperparameter tuning experiments — Hyperparameter tuning is a process whereby we search for the best set of hyperparameters of an ML model from all of the candidate sets. It is the process of optimizing the technical metrics we care about. The goal of hyperparameter tuning is simply to get the maximum evaluation score on…

Grid, Random, Coarse to Fine, Bayesian, Manual Search, and Genetic Algorithm! — Let say you have prepared the data and developed the POC of your ML model, and it works. However, you realized that the performance is not really good. Of course, you want to improve the performance of your model, but how? Should you change the model? That’s an option, but…

Static Thresholding, Dynamic Thresholding, Isolation Forest — A sudden spike in credit money refund, an enormous increase in website traffic, and unusual weather behavior are some of the examples of anomaly detection use-cases in time-series data. Here, in Bukalapak, we’re also faced with many such use-cases, which gives rise to the need for an in-house anomaly detection…

A step-by-step tutorial on how to build a chatbot with RASA — How often that phrase came out of your mind when you have a chat with “someone” in your favorite app or messenger? I believe almost all of us have had the experience of interacting with a chatbot. …

A step-by-step tutorial to create a customized pre-filled Google Form and how to blast it by email using Python — Let say you have blasted your beautifully curated Google Form to the public. You have received their responses and monitor them in a real-time dashboard. Based on their responses, you then saw that you have to send them more follow-up questions. For the sake of a better user experience, arguably…

Episode 3 of the “Invitation to All Aspiring RL Practitioner” Series — In the first part of this series, we’ve learned about some important terms and concepts in Reinforcement Learning (RL). We’ve also learned how RL is applied in an autonomous race car in the second part. In this article, we will learn about the taxonomy of Reinforcement Learning algorithms. We will…

Episode 2 of the “Invitation to All Aspiring RL Practitioner” Series — In the first part of this series, we’ve learned about some important terms and concepts in Reinforcement Learning (RL). We’ve also learned how RL works at a high-level. Before we dive deeper into the theory behind RL, I invite you to learn with me about RL based on its SUPER…

A step-by-step tutorial to build your own mosaic image from scratch using Python — Are you in a situation where… …you save dozens of memorable photos with your loved one and want to give him/her something memorable that is made by yourself? …you are both an art and tech enthusiast who want to produce something not only artsy but also techy? …you just want…