... important for many NLP applications such as informa-tion retrieval, automatic text classification,and information extraction. Most of theprevious Korean noun extraction systemsuse a morphological ... value such as for an unseen event in the training data.Table 1: Examples of syllable tagging by BI, BIS, IE, and IES representation schemessurface level lexical levelBI BIS IE IES(syllable) ... worse for recall, and better for F-measure. The representa-tion schemes using single syllable information (e.g.“BIS”, “IES”) are better than other representation schemes (e.g. “BI”, IE )....