Hanchung Lee

This query lists all columns in a specific table on AWS Redshift. [Read More]

From time to time, our favorite machine learning modeling libraries will throw errors complaining about NaNs when didnt scrub our data clean enough. [Read More]

There are varieties of different Python virtual environment managers out there - conda, pipenv, poetry, virtualenv, etc. And from time to time, we would need to convert or switch between different virtual environment tools. For example, AWS SageMaker deals with specifically conda while most software engineering deals with pipenv, poetry,... [Read More]

Recently there’s quite a few research learning papers detailing work in attempt to unseat XGBoost from the crown of the best model for tabular data. Though none has worked well enough, the biggest contributions of these papers are the XGBoost hyperparameter ranges that they used to tune the models for... [Read More]

SageMaker Notebook instances and SageMaker Studios are expensive. Insanely expensive especially if you leave them unterminated. Fortunately, there are ways to set up auto-shutdown of both SageMaker Notebook and SageMaker Studio instances when they are idling. [Read More]