Fishing operation type recognition based on multi-branch convolutional neural network using trajectory data 1East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China 2Shanghai Ocean University, Shanghai, China DOI 10.7717/peerj-cs.3020 Academic Editor Martina Iammarino Subject Areas Artificial Intelligence, Data Mining and Machine Learning, Spatial and Geographic Information Systems, Neural Networks Keywords Geohash, Vessel trajectory, Deep...