Canopies and RowSimilarity

[Pat Ferrel]

I have calculated similarity for all my docs. It has been suggested that 
this might be a good way to pick distances to use for canopies. When I 
look at distances for similar docs I see them all over the map, of 
course. And some that seem far away look pretty good. Is this just a 
matter of eyeballing or is there some better way of picking canopy 
distances from similarity distances?

BTW Could I vote for a better description of using RowSimilarity? 
Shouldn't it have a -ow parameter? It would also be nice if it 
calculated the number of columns from the input "matrix". These things 
make it hard to automate in scripts.