提出一种基于文本句子层分析的信息隐藏方法.由于文本中大量存在的与核心词紧密相关SBV(3)ADV和SBV(3)ADV(3)POB句法结构,而这种ADV结构中的副词及POB结构中的介词由于与核心词紧密相关,通常都有很强的表意作用,所以在句子中起着比较重要的作用.基于这个句法特点,采用副词同义词替换或增删,实现将信息嵌入到文本中的目的.通过实验与其他相近算法相比,该算法水印容量较大,有较强的鲁棒性和隐蔽性.%A method on sentence layer is proposed. Because there are many sentence structures such as 'SBV (∪) ADV and 'SBV (∪)> ADV (∪) POB' existing in text. The adverbs in 'ADV' structures and the prepositions in 'POB' structures have tight relations with head words of the text, they are always ideographic strongly and play a more important role. Based on this character, the information is embedded in the text by the synonyms' swapping of adverbs or adding and deleting adverbs. Combined with other similar algorithms through experiments, the algorithm has large watermarking capacity, strong robustness and good invisibility.
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