The Grosz / Sidner framework for
studying salience and coherence
l According to Grosz and Sidner, discourses
have two levels of organization:
At a GLOBAL level, discourses are divided into
SEGMENTS that must be coherent at the
INTENTIONAL level (= intentions must be clearly
At a LOCAL level, segments must be coherent at
the ENTITY level (= successive utterances must be
about the same entities)