基于简单名词短语的汉语介词短语识别研究

The Chinese Preposition Phrase Recognition Based on Simple Noun Phrase

该文提出一种融入简单名词短语信息的介词短语识别方法。该方法首先使用CRF模型识别语料中的简单名词短语,并使用转换规则对识别结果进行校正,使其更符合介词短语的内部短语形式;然后依据简单名词短语识别结果对语料进行分词融合;最后,通过多层CRFs模型对测试语料进行介词短语识别,并使用规则进行校正。介词短语识别的精确率、召回率及F-值分别为:93.02%、92.95%、92.99%,比目前发表的最好结果高1.03个百分点。该实验结果表明基于简单名词短语的介词短语识别算法的有效性。

This paper proposes a new approach integrating simple noun phrase information into preposition phrase recognition. We recognize simple noun phrases through basic CRF model, and filter the phrases with conversion rules in order to adapt to the inner phrase patterns in thepreposition phrases. Then we utilize the simple noun phrases to merge fragmental participles into a complete phrase in our corpus. Finally. we recognize the preposition phrases through multilayer CRFs, and use rules to correct the result. The optimized model performs 1.03 point higher than the current best model yielding 93.02% precision , 92.95% recall, and 92.99%, F-measure.