Aiming at this shortage,we put forward the BOR-TFIDF and use it to readjust each feature s differentiation to each class,i.
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Aiming at the shortage on normal distributed project, this paper puts forward a kind of distributed system based on database replication technique.
针对一般分布式方案中存在的不足，构建了一个基于数据库复制技术的分布式系统。
Aiming at the shortage of the current real model in the teaching for engineering drawing, this paper deals with the research and development of a virtual model lab.
针对目前工程图学教学中实物模型使用的局限性，研究了工程图学教学虚拟模型室。
Aiming at the shortage of traditional methods, this paper focuses on the method of monitoring city heat-land effects by heat-infrared RS.
针对传统城市热岛效应监测技术方法的不足，探讨了利用热红外遥感影像进行城市热岛效应监测的方法。
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