【作者】 赵纪元； 李晗静； 赵铁军；

【Author】 Zhao Jiyuan, Li Hanjing, Zhao tiejun (Department of Computer Science and Technology, Harbin Institute of Technology, Harbin 150001)

【机构】 哈尔滨工业大学语言语音教育部-微软重点实验室；

【摘要】 本文利用了在汉语的空间关系表达中射体的概念,结合语料和统计数据详细分析了射体的语法、语义、结构特点以及特殊用法。在此基础上提出了基于Winnow算法的射体识别策略,并结合射体的语言特点,给出了一套较为完整的特征方案。实验结果显示,该方法封闭测试F测度可达63．16％以上。同时,在对相同特征描述的基础上,进行了一组基于规则的射体识别实验,其结果与分类算法结果相差不大。可见,在特征不变的情况下,采用不同的方法进行射体识别,性能相差并不大。因此,进一步提升识别效果的关键是要不断寻找更有效的特征。更多还原

【Abstract】 This paper presents the concept of trajectory in Chinese spatial expression, and analyzes its syntax, semantic and special usage, on the base of the corpus and statistic data. A Winnow algorithm was proposed, whose features were designed according to the character of trajectory. Experimental results indicated that the F-Score in close-test could reach 63.16%. At the same time, we designed a group of rules on the base of the same features above, and did experiments with them. The results get little difference from the Winnow algorithm. Thereby, we can conclude that when the same features are used, the performance of different methods is similar. So we should focus on finding better features in the next step to improve the performance.更多还原