Definition: In this task, you are given a part of an article. Your task is to generate headline (title) for this text. Preferred headlines are under fifteen words.
Input: ion in Belief Networks: The Role of Intermediate States in Diagnostic Reasoning Gregory Provan* Institute for Decision Systems Research 4984 El Camino Real, Suite 110 Los Altos, CA 94022

Abstraction in Belief Networks: The Role of Intermediate States in Diagnostic Reasoning