To improve the accuracy of longsentence parsing, we thought that it would be more effective to cyclopaedically divide a sentence into all types of clauses and then parse the local dependency structure of each clause.
in order to resolve the sparse data problems caused by estimating P (b i k rel → b i l |B i ) with formula (2), we adopted the smoothing method described by Fujio and Matsumoto (Fujio and Matsumoto, 1998) Here, the head bunsetsu of the final bunsetsu of a clause boundary unit is identified.