uate all the available features through precision and
accuracy measures, and the analysis of ad-hoc user
questionnaires.
5 CONCLUSIONS
The goal of PVE project is studying and devising
methodologies and techniques for distributed man-
agement of knowledge in the context of a Virtual en-
terprise, favoring synergies and the interaction among
different companies. In particular, we have intro-
duced a knowledge indexing and retrieval engine used
for manage the information stored in a company. This
engine is used by the users to retrieve documents re-
lated to the current needs. The retrieval is enhanced
with semantic metadata extracted by means of in-
formation extraction techniques. Moreover, the sys-
tem employs a user modeling component to adapt the
human-computer interaction during information seek-
ing activities.
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