NDGCN: Network in Network, Dilate Convolution and Graph Convolutional Networks Based Transportation Mode Recognition

Transportation mode recognition is a crucial task of Intelligent Transportation Systems (ITS) in smart city. Though many works have been investigated on transportation mode recognition in recent years, the accuracy and generality are still not able to meet the application requirements. In this paper, we propose a novel fusion framework for fine-grained transportation mode recognition, which consists of the Network in Network (NIN), Dilate Convolution and the Graph Convolutional Networks (GCN). In this framework, we first use NIN and Dilate Convolution to capture local and global features, respectively, and then introduce the graph convolutional network to learn the correlation of features. We construct a topological structure of the features based on the maximal information coefficient (MIC) criteria which is used to measure the similarity between two variables, and then obtain the adjacency matrix used for graph convolution. Extensive experimental results on the public Sussex-Huawei Locomotion-Transportation (SHL) dataset demonstrate the superiority of our proposed NDGCN to other state-of-the-art baselines with more than 22.3% higher accuracy.