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.

    NeurIPS 2020 Favorite Papers

    January 10, 2021  |  6 min read

    NeurIPS 2020 virtual conference was full of exciting presentations! Here I list some notable ones with brief introductions.


    Best Machine Learning Papers of 2020

    January 02, 2021  |  12 min read

    Let's look back on the machine learning papers published in 2020! This post covers 10 representative papers that I found interesting and worth reading.


    How I Built 🍣This Sushi Does Not Exist🍣

    December 19, 2020  |  3 min read

    Lightweight GAN has opened the way for generating fine images with ~100 training samples and affordable computing resources. This post presents "This Sushi Does Not Exist" and how I built it with GAE.


    Custom Objective for LightGBM

    November 22, 2020  |  6 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  |  4 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.



    November 03, 2020  |  4 min read



    Transformers Now: A Survey of Recent Advances

    November 02, 2020  |  10 min read

    Transformer has undergone various application studies, model enhancements, etc. This post aims to provide an overview of these studies.


    Meet Pandas: Group-wise Sampling

    October 13, 2020  |  2 min read

    This post introduces how to sample groups from a dataset, which is helpful when you want to avoid data leakage.

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