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To retrieve real-time situational awareness (SA) information from tweets, the most effective way to mine text is using natural language processing (NLP). Among the advanced NLP models, the supervised approach can classify tweets into different categories to gain insight and leverage useful SA information from social media data. However, high-performing supervised models require domain knowledge to specify categories and involve costly labelling tasks. This research proposes a guided latent Dirichlet allocation (LDA) workflow to investigate temporal latent topics from tweets during a recent disaster event, the 2020 Hurricane Laura. With integration of prior knowledge, a coherence model, LDA topics visualisation and validation from official reports, our guided approach reveals that most tweets contain several latent topics during the 10-day period of Hurricane Laura. This result indicates that state-of-the-art supervised models have not fully utilised tweet information because they only assign each tweet a single label. In contrast, our model can not only identify emerging topics during different disaster events but also provides multilabel references to the classification schema. In addition, our results can help to quickly identify and extract SA information to responders, stakeholders and the general public so that they can adopt timely responsive strategies and wisely allocate resource during Hurricane events.<\/jats:p>","DOI":"10.1177\/01655515211007724","type":"journal-article","created":{"date-parts":[[2021,4,13]],"date-time":"2021-04-13T00:25:16Z","timestamp":1618273516000},"page":"465-479","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":67,"title":["A guided latent Dirichlet allocation approach to investigate real-time latent topics of Twitter data during Hurricane Laura"],"prefix":"10.1177","volume":"49","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3376-7350","authenticated-orcid":false,"given":"Sulong","family":"Zhou","sequence":"first","affiliation":[{"name":"Nelson Institute for Environmental Studies, University of Wisconsin\u2013Madison, USA; Department of Computer Sciences, University of Wisconsin\u2013Madison, USA"}]},{"given":"Pengyu","family":"Kan","sequence":"additional","affiliation":[{"name":"Department of Computer Sciences, University of Wisconsin\u2013Madison, USA"}]},{"given":"Qunying","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Geography, University of Wisconsin\u2013Madison, USA"}]},{"given":"Janet","family":"Silbernagel","sequence":"additional","affiliation":[{"name":"Nelson Institute for Environmental Studies, University of Wisconsin\u2013Madison, USA; Department of Planning and Landscape Architecture, University of Wisconsin\u2013Madison, USA"}]}],"member":"179","published-online":{"date-parts":[[2021,4,12]]},"reference":[{"key":"e_1_3_4_2_2","unstructured":"NASA. 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