Document Information Assisted Event Trigger Detection.

Event trigger detection remains a challenging task. Most of previous studies focused on variations of model structures to extract features from the local context of the trigger words. However, few studies focused on the utilization of document level information. In this work, we studied the benefit of exploiting the document level information for event trigger detections in textual data. Two approaches of extracting document features are proposed, and the document features are integrated with the embeddings generated from the local context of the trigger word using a convolutional neural network (CNN) model. Our experiment shows that these two methods both outperform the CNN-based baseline model.