Deep Learning and Network Analysis: Classifying and Visualizing Geologic Hazard Reports
Wenjia Li, Liang Wu, Xinde Xu, Zhong Xie, Qinjun Qiu, Hao Liu, Zhen Huang, Jianguo Chen
Deep Learning and Network Analysis: Classifying and Visualizing Geologic Hazard Reports
If progress is to be made toward improving geohazard management and emergency decision-making, then lessons need to be learned from past geohazard information. A geologic hazard report provides a useful and reliable source of information about the occurrence of an event, along with detailed information about the condition or factors of the geohazard. Analyzing such reports, however, can be a challenging process because these texts are often presented in unstructured long text formats, and contain rich specialized and detailed information. Automatically text classification is commonly used to mine disaster text data in open domains (e.g., news and microblogs). But it has limitations to performing contextual long-distance dependencies and is insensitive to discourse order. These deficiencies are most obviously exposed in long text fields. Therefore, this paper uses the bidirectional encoder representations from Transformers (BERT), to model long text. Then, utilizing a softmax layer to automatically extract text features and classify geohazards without manual features. The latent Dirichlet allocation (LDA) model is used to examine the interdependencies that exist between causal variables to visualize geohazards. The proposed method is useful in enabling the machine-assisted interpretation of text-based geohazards. Moreover, it can help users visualize causes, processes, and other geohazards and assist decision-makers in emergency responses.
geologic hazard / network analysis / latent dirichlet allocation / text classification / deep learning
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. In Proceedings of the AAAI Conference On Artificial Intelligence, 2017, 31(1)
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