Chinese Text Zero-Watermark Based on Space Model

In the study of copyright protection of digital text, a Chinese text Zero-Watermark scenario based on space model was proposed. The construction and detection model of the watermark was presented, and the core algorithm of the watermark was designed in this paper. In the scenario, the three-dimensional model was constructed by using the two-dimensional coordinate of word-level and the sentence weights of sentence-level. By mapping all sentences to the three-dimensional model, the three-dimensional space modal of whole text was produced, which was the eigenvector of this paper. Therefore, the Chinese text zero-watermark was constructed. Furthermore, the effectiveness and feasibility of the algorithm was proved with algorithm simulation. The simulation results also showed that the algorithm had good robustness, especially for syntactic transfer¿Csynonyms replacement and shear attack.