[Sigia-l] Re: costs of classification

[Andrew McNaughton]

On Fri, 8 Nov 2002, Laura Norvig wrote:

> At some point I would like to be able to measure the ROI (there's
> that pesky term again) of manually assigning keywords vs. leveraging
> some kind of natural language processing. The latter is always going
> to fall somewhat short unless it builds in a way to point to keywords
> that are not present in the actual document.

I know a good deal about the technical approaches to this problem, but
less about available software.  'Latent Semantic Analysis' and the related
term 'Latent Semantic Indexing' and also 'Spreading Activation Networks'
are likely techniques which might be mentioned in white papers of suitable
products.



Andrew