ds_journal - Journal of Data Science Journey

My Understanding of Pydantic

I am recently reading the book Robust Python by Patrick Viafore. In this blog post, I want to discuss the usage of pydantic library, introduced in chapter 14 of the book.

Construct ROC Curve from Scratch

This post aims to show how to construct the receiver operating characteristic (roc) curve without using predefined functions. It hopes to help you better understand how the roc curve is constructed and how to interpret it.

Notes from Data Science at the Command Line

In this post, I want to write down some ideas from Jeroen Janssens’s book Data Science at the Command Line, 2e. Instead of being a comprehensive overview of the book, this note only picks some ideas that add to my existing knowledge and hopefully it can bring some new thoughts to you. Of course, this blog post reflects my personal understanding and all errors remain mine.

Entity Embedding in fastai 2

This post aims to introduce how to use fastai v2 to implement entity embedding for categorical variables in tabular data. Entity embedding is a powerful technique that can sometimes boost the performance of various machine learning methods and reveal the intrinsic properties of categorical variables. See this paper and this post for more details.

Logistic Regression’s Coefficients Explanation

This post is going to introduce logistic regression with an emphasis on explaining the coefficients in the output of Python’s statsmodels.