This paper addresses the correlation problem which is central in sensor fus
ion, from the viewpoint of possibility theory. This problem aims at separat
ing pieces of information pertaining to different objects and to gather tho
se which are likely to pertain to the same object. We present two different
views of the problem, one based on similarity relations, while the other d
iscusses the problem in a logical framework. (C) 2001 John Wiley & Sons, In
c.