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: In this paper, we consider several types of in­ formation and methods of combination asso­ ciated with incomplete probabilistic systems. \Ve discriminate between 'a priori' and evi­ dential information. The former one is a de­ scription of the whole population, the latest is a restriction based on observations for a particular case. Then, we proposse different combination methods for each one of them. 'We also consider conditioning as the hetero­ geneous combination of 'a priori' and eviden­ tial information. The evidential information is represented as a convex set of likelihood func­ tions. These will have an associated possi­ bility distribution with behavior according to classical Possibility Theory.

COMBINATION OF UPPER AND LOWER PROBABILITIES