Deep learning for real-time social media text classification for situation awareness-using Hurricanes Sandy,Harvey,and Irma as case studies  

作　　者：Manzhu Yu Qunying Huang Han Qin Chris Scheele Chaowei Yang 

机构地区：[1]Department of Geography and Geoinformation Science,George Mason Univeristy,Fairfax,VA,USA [2]Department of Geography,University of Wisconsin-Madison,Madison,WI,USA [3]Ankura,Washington,DC,USA

出　　处：《International Journal of Digital Earth》2019年第11期1230-1247,共18页国际数字地球学报（英文）

基　　金：supported by National Science Foundation[grant number IIP-1338925].

摘　　要：Social media platforms have been contributing to disaster management during the past several years.Text mining solutions using traditional machine learning techniques have been developed to categorize the messages into different themes,such as caution and advice,to better understand the meaning and leverage useful information from the social media text content.However,these methods are mostly event specific and difficult to generalize for cross-event classifications.In other words,traditional classification models trained by historic datasets are not capable of categorizing social media messages from a future event.This research examines the capability of a convolutional neural network(CNN)model in cross-event Twitter topic classification based on three geo-tagged twitter datasets collected during Hurricanes Sandy,Harvey,and Irma.The performance of the CNN model is compared to two traditional machine learning methods:support vector machine(SVM)and logistic regression(LR).Experiment results showed that CNN models achieved a consistently better accuracy for both single event and crossevent evaluation scenarios whereas SVM and LR models had lower accuracy compared to their own single event accuracy results.This indicated that the CNN model has the capability of pre-training Twitter data from past events to classify for an upcoming event for situational awareness.

关 键 词：Text mining deep learning hurricanes TWITTER convolutional neural network situational awareness 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]