抽样过滤 meaning in English

sample filtering

In order to improve the efficiency , we use the sampling points of the sequences to compute the distance of two sequences . the distance of sampling points is used to filter the sequence of the database , so the similarity searching space is reduced and the efficiency of the query is improved
在保持序列变化模式的前提下，使用抽样点来计算序列之间的dtw距离，并依据抽样比率和查询参数选择过滤距离对序列数据库进行过滤，实验结果表明，抽样过滤的方法明显提高了查询效率。