Key word analysis method 关键字分析法
In the processing of information retrieval we base our work on word frequency statistics and analysis of key sentences, and retrieve information from these to fill event frames using rules.
信息抽取阶段对原文进行词频统计，关键词句分析，并在此基础上利用规则抽取相应信息填充摘要框架。
To overcome finite word length effects and improve its resistance to the attack of crypt analysis, a chaotic map as a private key is added to the existing chaotic watermarking systems.
该方法在现有的混沌数字水印系统基础上，增加一个混沌映射作为私有密钥来克服有限字长效应和提高算法的抗破译性。
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