Blog posts

2025

Networked AI bootcamp: from Python to graph neural networks

15 minute read

Published:

This tutorial aims to help you get ready to work with graph neural networks from zero. You can always ask Google and ChatGPT for help. For example,

  • “Hey ChatGPT, explain the following code to me …“
  • “Explain binary search with Python code”
  • “I am trying to set up Docker on Windows/Linux/MacOS but got this error”
  • “Recommend some free courses or tutorials for learning Python library NetworkX”
  • “I want to find XXX from professional and trustworthy sources, but I don’t want mix with YYY, what query words I should use on Google/DuckDuckGo/Bing?”

2024

2023

2022

Military and Amateur HF Radios – the Basics

12 minute read

Published:

Since the escalation of the Russo-Ukrainian War on Feb. 24, 2022, the high frequency (HF) radio has made headlines and sparked some discussions in the amateur radio community. With low bandwidth (2.5kHz-10kHz per HF channel), HF radio can only be used for digital or analog voice and E-mail/chat/text messaging. However, if the Internet, satellites, and telecom networks were all blocked in a war or natural disaster, HF radio is the only way of long distance communications without relying on any infrastructure.

2021