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spatial or temporal criteria. However, for the retrieval of documents based on spatial,
temporal and thematic criteria at the same time with a strong expressiveness such
as “Pyrénées mountains but not those of Gavarnie, in the 19
th
Century, if possible,
unrelated to ascents”, we would need to study different processes of IRS combination
and their possible biases.
Thus, beyond these different versions of the PIV IRS, dedicated to the spatial
and temporal information contained within textual documents, we will, in Chapter 3,
design and implement a multicriteria IRS combining a spatial IRS, a temporal IRS
and a thematic IRS in order to meet needs where the search criteria focus on these
dimensions with an expressiveness that will allow us to associate constraints with
each search criterion.
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