Statistical generation: three methods compared and evaluated
BELZ, ANJA (2005) Statistical generation: three methods compared and evaluated In: Proceedings of the 10th European Workshop On Natural Language Generation, 8-10 Aug 2005, Aberdeen, Scotland.
Official URL: http://www.ling.helsinki.fi/~gwilcock/ENLG-05/ENLG...
Statistical NL G has largely meant n-gram modelling which has the considerable advantages of lending robustness to NL G systems, and of making automatic adaptation to new domains from raw corpora possible. On the downside, n-gram models are expensive to use as selection mechanisms and have a built-in bias towards shorter realisations. This paper looks at treebank-training of generators, an alternative method for building statistical models for NL G from raw corpora, and two different ways of using treebank-trained models during generation. Results show that the treebank-trained generators achieve improvements similar to a 2-gram generator over a baseline of random selection. However, the treebank-trained generators achieve this at a much lower cost than the 2-gram generator, and without its strong preference for shorter reasations.
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