基于改进VSM的农业实用技术自动问答系统研究

Study on the Question-Answer System of Agricultural Practical Technology Based on Improved VSM

针对农业实用技术需求及传统向量空间模型在农业特定领域应用中存在的问题,从特征词规范化、文档特征词专业性权值修正、查询特征词分布权值修正、系统效率优化4方面对其改进,并进行农业技术自动问答系统开发。结果表明,改进后的计算模型提高了自动问答的准确率和召回率,且系统检索性能也得到明显改善。

According to the existed problems of agricultural practical technology requirement and traditional VSM when they applied to the agricultural Field, the paper solved the problems by characteristic term standardization, the weight of specialized word revision, the inquiry of characteristic words distribution revision, and system efficiency optimizer, and developed a Question-Answer system based on the improved VSM. The results showed that the improved computer model raised theaeeuracy , recall rate of and the system retrieval performance.