[kleiba]

Also: "LSA was patented in 1988 (US Patent 4,839,853) by Scott Deerwester, Susan Dumais, George Furnas, Richard Harshman, Thomas Landauer, Karen Lochbaum and Lynn Streeter."

https://en.wikipedia.org/wiki/Latent_semantic_analysis

[nilsbunger]

So the patent is expired now, right?