关键词: 多模态, 谣言检测, 图像内嵌文本, 自然语言处理, 深度神经网络

Abstract: The multi-modal web rumors that combine images and texts are more confusing and inflammatory, so they are more harmful to national security and social stability. At present, the web rumor detection work fully considers the text content of the essay in the rumor, and ignores the image content and the embedded text in the image. Therefore, this paper proposes a multi-modal web rumors detection method MSRD for the image, embedded text in the image and the text of the essay based on deep neural networks. This method uses the VGG-19 network to extract image content features, DenseNet to extract embedded text content, and LSTM network to extract text content features. After concatenating with the image features, the mean and variance vectors of the image and text shared representations are obtained through the fully connected layer, and the random variables sampled from the Gaussian distribution are used to form a re-parameterized multi-modal feature and used as the input of the rumor detector. Experiments show that the method achieves 68.5% and 79.4% accuracy on the two data sets of Twitter and Weibo.

Key words: multimodal, rumor detection, inline text in image, natural language processing, deep neural network