Engineering
Programming
Rust
Ultrasonic ranging with Rust on Raspberry Pi Pico
This article describes how to connect the ultrasonic ranging module HC-SR04 to a Raspberry Pi Pico and control them with the Rust language to measure distances to objects.
2023.12.29
Collection of embedded Rust implementation examples – Electronics with Raspberry Pi Pico
This article is a collection of tips for embedding the Rust language into a Raspberry Pi Pico .You can find the corresponding code notation by what you want to achieve with each electronic part. We will add to it from time to time, so it might be a good idea if you come back to look at it often.
2023.12.292024.01.01
How to switch Rust versions
Find out which version of Rust is currently in use and how to install and use different versions of Rust. This article will help you to match Rust versions with your teammates or authors of technical books, and to switch between Rust versions so that your tools work properly.
2023.12.29
Python
Machine Learining & AI
【図解】ROC曲線・PR曲線の書き方と使い分け基準を解説
ROC曲線とPR曲線は、検査や機械学習の分類に対する性能を判定する方法です。この手法を用いることで、検査の感度や陽性的中率のトレードオフを考慮しながら、性能を判定・比較することができます。この記事では、具体例を用いてROC曲線・PR曲線の書き方を説明し、それぞれを状況別に使い分ける方法について解説します。
2023.12.262023.12.28
Caluculating 95% confidence interval of ROC-AUC.
Calculating the 95% confidence interval for the AUC of the ROC curve allows one to infer the range of values that the AUC would take from the results of data obtained 'by chance'. Confidence intervals are therefore always presented in scientific papers. This article describes how to find the 95% confidence interval of the ROC-AUC and shows how the calculation can be implemented by the Python language.
2023.12.222023.12.28
Electricity & Electronic work
Ultrasonic ranging with Rust on Raspberry Pi Pico
This article describes how to connect the ultrasonic ranging module HC-SR04 to a Raspberry Pi Pico and control them with the Rust language to measure distances to objects.
2023.12.29
Collection of embedded Rust implementation examples – Electronics with Raspberry Pi Pico
This article is a collection of tips for embedding the Rust language into a Raspberry Pi Pico .You can find the corresponding code notation by what you want to achieve with each electronic part. We will add to it from time to time, so it might be a good idea if you come back to look at it often.
2023.12.292024.01.01
Formulae and proofs of the Δ-Y (delta-star) conversion
Both delta and star (Y) circuits are circuits with three resistors connected. Using the Δ-Y (delta-star) conversion formula, you can calculate the combination of resistor values that make these circuits equivalent. Read this article to understand the principle of the Delta-Y conversion formula and its proof.
2023.12.222024.01.03
Mathematics
Serialised Article
Complete list of methods for solving differential equations
【全９パターン網羅】微分方程式の解法一覧
微分方程式を形状ごとに分類し、それぞれの解法を解説しています。解法の基本は変数分離形または定数係数の線形の微分方程式にあり、より複雑な微分方程式は、これらのパターンに帰着させることを目標にしていると考えると、全パターンを簡単に覚えることができます。
ushitora.net
2023.12.28
Probability & Statistics
分散共分散行列の対角化（２次元）
概要 この記事では、分散共分散行列が対角行列となるように変数変換を行う方法、もしくは分散の方向が独立となるような軸の見つけ方について解説し、その導出を行う。 これは、主成分分析（Principal Component Analysis; P...
2024.01.04
【図解】ROC曲線・PR曲線の書き方と使い分け基準を解説
ROC曲線とPR曲線は、検査や機械学習の分類に対する性能を判定する方法です。この手法を用いることで、検査の感度や陽性的中率のトレードオフを考慮しながら、性能を判定・比較することができます。この記事では、具体例を用いてROC曲線・PR曲線の書き方を説明し、それぞれを状況別に使い分ける方法について解説します。
2023.12.262023.12.28
Caluculating 95% confidence interval of ROC-AUC.
Calculating the 95% confidence interval for the AUC of the ROC curve allows one to infer the range of values that the AUC would take from the results of data obtained 'by chance'. Confidence intervals are therefore always presented in scientific papers. This article describes how to find the 95% confidence interval of the ROC-AUC and shows how the calculation can be implemented by the Python language.
2023.12.222023.12.28