Journal of Southwest Petroleum University(Science & Technology Edition) ›› 2020, Vol. 42 ›› Issue (6): 157-164.DOI: 10.11885/j.issn.1674-5086.2020.05.12.06

• A Special Issue on Artificial Intelligence Technology & Application in Oil and Gas Fields • Previous Articles     Next Articles

Question Answering System for Drilling Safety Based on Tri-BiLSTM-CNN

WANG Bing1, ZHENG Yamei1, CHEN Maoke2, GAO Lingyun2   

  1. 1. School of Computer Science, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. Southwest Branch of China Petroleum Logging Co. Ltd., Yubei, Chongqing 401120, China
  • Received:2020-05-12 Published:2020-12-21

Abstract: The FAQ question answering system in a specific field usually has the following three problems:(1) how to effectively represent sentences semantically; (2) how to effectively match sentences semantically; (3) how to segment domain words. To solve the above three problems, a deep learning model based on Triplet BiLSTM-CNN is proposed. Firstly, the bidirectional long-term memory network and convolutional neural network are combined to construct the network model, which makes full use of the advantages of BiSLTM in processing the serialized data and the advantages of CNN in capturing local features. Then, the Triplet parallel structure is used to match sentences. Finally, character vector is used instead of word vector to avoid the influence of segmentation error on the model. The experimental results on real data sets in the field of drilling safety show that Triplet BiLSTM-CNN model can better vectorize sentence semantics and significantly improve the accuracy of sentence similarity calculation, and the effect is significantly better than that of CNN and LSTM. The model is applied to the FAQ question answering system in the field of drilling safety, which can effectively reduce the labor cost, and is of great significance and application value to improve the efficiency and quality of drilling work.

Key words: drilling safety, question answering system, bidirectional long short term memory, convolution neural network, question similarity computation

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