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Finding Optimal K with the Silhouette Method in K-Means Clustering
Dev

Finding Optimal K with the Silhouette Method in K-Means Clustering

Explains the silhouette method for determining the optimal number of clusters (K) in K-Means clustering, including calculation, interpretation, and differences from the elbow method. Evaluation combining three metrics—average, minimum, and negative scores—is key.

LLM Fine-Tuning: A Practical Guide to LoRA and QLoRA
AI

LLM Fine-Tuning: A Practical Guide to LoRA and QLoRA

A practical guide to fine-tuning large language models using LoRA and QLoRA, covering theory, implementation steps, performance comparisons, and real-world pitfalls, with the latest trends from 2026.

Open-Source Solar System Simulator Gravity Visualizes Gravity and Orbits
Dev

Open-Source Solar System Simulator Gravity Visualizes Gravity and Orbits

The open-source solar system simulator "Gravity" has been released. It allows visual learning of gravity and orbital principles through 24 interactive animations. Based on actual observation data, it is attracting attention as an educational tool that stimulates children's scientific curiosity.

U.S. Census Bureau Bans Noise Infusion from Statistical Products
Dev

U.S. Census Bureau Bans Noise Infusion from Statistical Products

The U.S. Department of Commerce has completely banned noise infusion (a core method of differential privacy) in statistical products from the Census Bureau and the Bureau of Economic Analysis. This article explains the outcome of the controversy over the balance between accuracy and privacy.