Deception Detection from Linguistic and Physiological Data Streams Using Bimodal Convolutional Neural Networks
This work addresses deception detection for security and ethical applications, but it is incremental as it builds on existing multimodal methods.
The paper tackled deception detection by proposing a fused convolutional neural network model using linguistic and physiological data, achieving improved performance over earlier methods and demonstrating feasibility with limited data.
Deception detection is gaining increasing interest due to ethical and security concerns. This paper explores the application of convolutional neural networks for the purpose of multimodal deception detection. We use a dataset built by interviewing 104 subjects about two topics, with one truthful and one falsified response from each subject about each topic. In particular, we make three main contributions. First, we extract linguistic and physiological features from this data to train and construct the neural network models. Second, we propose a fused convolutional neural network model using both modalities in order to achieve an improved overall performance. Third, we compare our new approach with earlier methods designed for multimodal deception detection. We find that our system outperforms regular classification methods; our results indicate the feasibility of using neural networks for deception detection even in the presence of limited amounts of data.