T.: Parsing clinical Finnish: Experiments with rule-based and statistical dependency parsers

In this paper, we present a new syntacti-cally annotated corpus consisting of daily notes from an intensive care unit in a Finnish hospital. Using the corpus, we perform experiments with both rule-based and statistical parsers. We apply an ex-isting rule-based parser specifically devel-oped for this clinical language and create a set of conversion rules for transforming the constituency scheme of this parser into the dependency scheme of the corpus. The statistical parser is induced from the cor-pus using the MaltParser system. We find that even with a modestly-sized corpus, the statistical parser achieves re-sults comparable to those previously re-ported on a number of languages using considerably larger corpora. The accu-rate constituency-to-dependency conver-sion improves the applicability of the rule-based parser by inferring grammatical roles, thus deepening its analyses.