Method of meaning loss evaluation for summary attack in text watermarking
针对文本水印摘要攻击的语义损失量评估方法

Summary attack on natural language watermarking was likely to cause excessive loss of the texts' original meaning. In order to control the loss, this paper proposed a method based on the existing evaluation method of automatic summarization. It quantized the meaning of every sentences, then evaluated the meaning loss which caused by the summary attack. It analyzed the major factors of meaning loss, as well as the relationship between these factors and the meaning loss. This method gave the attack algorithm's distortion a more realistic evaluation and was an automatic evaluation method.