Hippocampus's Garden

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

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Welcome to Hippocampus's Garden, a Shion Honda's blog. I regularly write about machine learning, statistics, programming, and my hobbies.
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How to Setup Jupyter in Pipenv / Poetry

August 11, 2021  |  2 min read

It's so easy for me to forget how to setup Jupyter in a newly created Poetry / Pipenv environment. So, here it is.

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How to Kaggle with Colab Pro & Google Drive

May 31, 2021  |  4 min read

This post shows you how to set up a cheap and comfortable computing environment for Kaggle using Colab Pro and Google Drive. Happy Kaggling!

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On Optimal Threshold for Maximizing F1 Score

May 15, 2021  |  9 min read

This post attempts to take a deeper look at F1 score. Do you know that, for calibrated classifiers, the optimal threshold is half the max F1? How come? Here it's explained.

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コロナ禍に読みたい本

April 09, 2021  |  9 min read

コロナ以前に書かれた「広義・新型コロナウイルス関連書籍」をいくつか読んだので、良かったものを紹介します。自然科学寄りの選書です。

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Stats with Python: Multiple Linear Regression

March 31, 2021  |  3 min read

This post steps forward to multiple linear regression. The method of least squares is revisited --with linear algebra.

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Stats with Python: Simple Linear Regression

March 22, 2021  |  5 min read

This post summarizes the basics of simple linear regression --method of least squares and coefficient of determination.

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Stats with Python: Sample Correlation Coefficient is Biased

February 24, 2021  |  6 min read

Is the sample correlation coefficient an unbiased estimator? No! This post visualizes how large its bias is and shows how to fix it.

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Ready Steady GO: Dispatcher-Worker with errgroup

February 14, 2021  |  2 min read

A golang implementation of dispatcher-worker pattern with errgroup. It immediately cancels the other jobs when an error occurs in any goroutine.

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