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resources via a Web browser interface, Grid portals
have come into existence.
Many different Grid portals can be found at the
present time. Therefore, it is easy for users to move
from one Grid portal to another, without the user
wasting time and money. Thus, for users to be
attracted to a particular Grid portal and come back
regularly, the portal must offer a good level of
quality.
Bearing all this in mind, a quality model for Grid
portals, namely G-PQM, has been presented. This
model can be used, on the one hand, to assess the
quality level of a specific Grid portal, and on the
other hand, to identify its weakness and define
corrective actions which improve its level of quality.
In addition, this model has been applied to two grid
portals and some corrective actions have been
defined in order to improve their level of quality.
Future work includes the validation of the model
characteristics through surveys. In addition,
measures for each one of the characteristics and sub-
characteristics must be identified. Thereby, the G-
PQM will be finished.
ACKNOWLEDGEMENTS
This work was conducted when the first author was
in stage at the University of Cardiff and is part of the
CALIPO (TIC 2003-07804-C05-03) and
DIMENSIONS (PBC-05-012-1) projects and the
CALIPSO network (TIN2005-24055-E).
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