Rule-based vs. Probabilistic Surface Realisation of Definite Descriptions

Francis Marques V. dos SantosDaniel Bastos PereiraIvandré Paraboni

We describe the evaluation work of two standard approaches to the surface realisation of definite descriptions as Portuguese text. Taking as an input a non-linguistic representation of the description to be generated, a rule-based approach makes use of grammar constraints to compute the appropriate surface string, whereas a competing probabilistic model applies n-gram statistics to the same task. The results of both systems are compared against a corpus of human-produced descriptions and their advantages are discussed.

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