Communications of the ACM

Two Ways Into the Maze: From Bidirectional BFS to Bidirectional Dijkstra

Now bring back the two groups. One search starts at A and moves forward, always taking the cheapest next town. The other ...

If the wind blows, the bucket maker files a patent | Introduction to algorithms for patent information analysis (Part 4)

Introduction"Everyone in the industry is connected to us."This is a story about the intellectual property department of a ...

Game Stage Design AI | I inspected 5 levels from ChatGPT and found the doors were just for show

I had ChatGPT create 5 levels for a puzzle game and inspected them with a script to see if they could be solved.The execution took place on October 28, 2026, and ChatGPT was used without logging in.I ...