Hippocampus's Garden

Under the sea, in the hippocampus's garden...

30 posts tagged with "en"

Stats with Python: Rank Correlation

February 06, 2021  |  9 min read

The correlation coefficient is a familiar statistic, but there are several variations whose differences should be noted. This post recaps the definitions of these common measures.

Custom Objective for LightGBM

November 22, 2020  |  7 min read

If you want to use a custom loss function with a modern GBDT model, you'll need the first- and second-order derivatives. This post shows how to implement them, using LightGBM as an example

A Deeper Look at ROC-AUC

November 15, 2020  |  6 min read

How come ROC-AUC is equal to the probability of a positive sample ranked higher than negative ones? This post provides an answer with a fun example.

BERT That Works on Browser

May 22, 2020  |  6 min read

This post explains how MobileBERT succeeded in reducing both model size and inference time and introduce its implementation in TensorFlow.js that works on web browsers.