September 25, 2020

Project 3: Music Genre Classification based on Lyrics (Multiclass Classification)

In this project I built a model do classify the genre of a music, based on its lyric. The model was trained with some popular brazilian music styles, such as Axé, Funk, MPB, Pagode, Samba and Sertanejo. I collected music lyrics in LETRAS.MUS.BR web site, I developed web scrappers, one for each music genre, using Python package BeaultifulSoup. Almost 1k lyrics was collected for each genre. The web crawlers codes are available here.

September 10, 2020

Project 2: Cardiac Arrhythmia Prediction (Binary Classification)

In this project, I built a model to classify if patients are suffering cardiac arrhythmia. The data used in this project was collected during some researches at H. Altay Guvenir Bilkent University, the dataset can be downloaded here at UCI platform. To prepare the datasets before the model fitting, I used the custom framework I developed (published in this portfolio as Project 1). The following steps were followed: Data Prep: feature types and target definition, null character (?

May 10, 2020

Project 1: Custom Machine Learning Framework

During the process of machine learning modelos development, there are several steps we usually follow to find the best fit model, ensuring that this model were generalizable to new unknown datasets. The common steps followed are data sampling, data partition, feature engineering, feature selection, correlation analysis, feature discretization and model adjustment. Each of these steps can demand a lot of work for each machine learning project. In this project, I built a set of classes to automate several parts of these usual steps, making use of sklearn base classes BaseEstimator and TransformerMixin, in order to allow its use in sklearn pipelines, with the use of fit/transform methods.