DEALING WITH UNCERTAINTY IN A MULTI-SOURCE INTERROGATION SYSTEM

The work reported here focuses on different uncertainty problems encountered in the design of a common interface to various sources of information pertaining to characteristic parameters of classes of objects. The paper more particularly considers i) the problem of producing plausible parameter estimates from incomplete collections of data and expert knowledge for extrapolating missing values; ii) the evaluation of fuzzy queries pertaining to vaguely specified classes of objects; iii) the combination of pieces of information issued from the different sources. Fuzzy sets and possibility theory is the framework which is used here for dealing with imprecision and uncertainty.