How Does the Choice of Morphological Analyser Influence the Quality of Syntactical Analysis?

摘要

The usual steps of computational analysis of a text include morphological analysis, morphological disambiguation and (shallow) syntactic analysis; often these steps are carried out in linear order and each step of automatic analysis uses the output of previous step as an input. So, the quality of each step depends on the quality of the previous steps. Our article is concerned with the impact of the first aforementioned step - the morphological analysis - on the (shallow) syntactic analysis. The analyzed language is Estonian - a language characterized by rich morphology and relatively free word order.