分类关键字 meaning in English

sorting key word

In or der to im prove the index precision , the keywords of classification on im age database is used for for m ing a three - level sem a ntics network , and then a unified fra m ework for sem a ntics and feature based relevance feedback in region - based im age retrieval is described , which is experim e nted by irrelatively adjusting the keywords and the weights in the distance m easuring
根据检索要求，应用图像库的分类关键字建立图像语义网络，采用一种综合图像中多数区域特征的匹配策略，以及建立区域语义和低层特征无缝结合的相关反馈检索框架，通过不断调整检索关键字、检索向量与距离测度中的权重系数的方法提高检索准确度。