判断动词与存在动词在藏语中使用频度高,兼类现象频繁,在不同语境下具有不同的含义。既可以表示判断、存在和领有意义,也可作为语法标记表达复杂的体貌、示证意义。判断、存在动词的多功能性给藏文文本分词标注、句型识别等工作带来较大的困难。借助藏语语法的研究成果和真实藏文文本,我们对这两类词的上下文语境进行了分析和归纳,进而提出了辨别这两类词的方法。首先,考察判断动词和存在动词在不同语境下的左右特征词;然后,建立了识别规则库,从肯定与否定两个方面判别其词性并标注。

Tibetan linking verb and existential verb are commonly applied widely with rich ambiguous. In various contexts, their meanings include judgment, existence, possession, or evidentiality and egocentricity. The diversity of meaning brings difficulties to Tibetan text labeling and sentence pattern identification. We examine the characteristics of such words, build up a rule library, and finally proposed a linking verb and existential verb recognition method.
Key wordsTibetan; linking verb; existential verb; automatic recognition