RE: Re: Nested facets

Thanks Pete! Could you maybe give a few examples of this large taxonomy
and how some facets only made sense at certain levels, and of the
different ways you handled this? (I also want to make sure that you mean
the same by "facet" as me).

Peter

>  We pushed the bounds on this with one customer that has over 1500 
>  facets. While it was enough of a scaling challenge just to crunch 
>  results for 1500 facets, there was also an equal scaling challenge 
>  from an information science/usability perspective to present all of 
>  this information to the user in a meaningful way. Logically, all 
>  1500 facets were meaningful from the root node, but pragmatically, 
>  some were subordinate to others, while others (like manufacturer, 
>  price, availability, or material) might always be important.
>  
>  It turns out that there are lots of ways to handle these. For 
>  different use cases, it might be desirable to fire precedence rules 
>  from the root, leaf, or intermediate nodes of a facet. Given a large 
>  number or rules, sometimes it might make sense to be less explicit 
>  about these, but rather to control programmatically when facets 
>  appear according to their "information content" relative to the 
>  current results, or by assigning an editorial "weight" to each 
>  facet. Again, lots of right ways to do this, and lots of use cases 
>  out there that exercise them all.






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