Иерархическая последовательность слов

Most language models used for natural lan- guage processing are continuous. However, the assumption of such kind of models is too simple to cope with data sparsity problem. Al- though …...

For relieving data sparsity problem, Hierarchi- cal Word Sequence (abbreviated as HWS) lan- guage model, which uses word frequency in- formation to convert raw sentences into spe- cial n-gram sequences, …...