Chinese Unknown Word Recognition for PCFG-LA Parsing

Table 2

Features employed to measure the similarity between two vertices, in a given text example “他 非常 专业” (I am very happy), where the trigram is “非 常专”.

Feature	Example
Trigram + Context	他 非常 专业
Trigram	非 常专
Left Context	他 非
Right Context	专 业
Center Word	常
Left Word + Right Word	非 专
Left Word + Right Context	非 专业
Left Context + Right Word	他 非专