I wonder how well it works; my takeaway was that you need to tweak the internal thresholds and matrix sizes a lot to get the optimal results, which in turn is highly dependant on the datasets you use (which is also made very clear in every LSA paper you'll read).
I've written an LSA implementation a few years ago for a BI product ( written about http://www.innoveerpunt.nl/interactief-innoveren/innoveerpun... sorry that it's Dutch :) ).
I wonder how well it works; my takeaway was that you need to tweak the internal thresholds and matrix sizes a lot to get the optimal results, which in turn is highly dependant on the datasets you use (which is also made very clear in every LSA paper you'll read).