Thanks for writing this article. I came across it through stumbleupon. It inspired me to combine Yahoo’s term extractor with ruby on rails tagging plugin. Not so underrated anymore ;)

TermExtractor is a software package for Terminology
Extraction. The software helps a web community to
extract and validate relevant domain terms in their
interest domain, by submitting an archive of
domain-related documents in any format.

TermExtractor extracts terminology consensually
referred in a specific application domain. The
software takes as input a corpus of domain documents,
parses the documents, and extracts a list of
“syntactically plausible” terms (e.g. compounds,
adjective-nouns, etc.).
Documents parsing assigns a greater importance
to terms with text layouts (title, bold, italic,
underlined, etc.). Two entropy-based measures, called
Domain Relevance and Domain Consensus, are then used.
Domain Consensus is used to select only the terms
which are consensually referred throughout the corpus
documents. Domain Relevance to select only the terms
which are relevant to the domain of interest, Domain
Relevance is computed with reference to a set of
contrastive terminologies from different domains.
Finally, extracted terms are further filtered using
Lexical Cohesion, that measures the degree of
association of all the words in a terminological
string. Accept files formats are: txt, pdf, ps, dvi,
tex, doc, rtf, ppt, xls, xml, html/htm, chm, wpd and
also zip archives.

I’d like if you partecipate in the TermExtractor
evaluation task. The result of your evaluation will be
put in a paper (I enclose a draft). Please contact me
if you want to partecipate (this is very important for
me!).

MANY THANKS!!!

–
Francesco Sclano
home page: http://lcl2.di.uniroma1.it/~sclano
msn: francesco_sclano@yahoo.it
skype: francesco978