Detecting events from the social media through exemplar-enhanced supervised learning

Document Type

Article

Publication Date

9-2-2019

Abstract

Understanding and detecting the intended meaning in social media is challenging because social media messages contain varieties of noise and chaos that are irrelevant to the themes of interests. For example, conventional supervised classification approaches would produce inconsistent solutions to detecting and clarifying whether any given Twitter message is really about a wildfire event. Consequently, a renovated workflow was designed and implemented. The workflow consists of four sequential procedures: (1) Apply the latent semantic analysis and cosine similarity calculation to examine the similarity between Twitter messages; (2) Apply Affinity Propagation to identify exemplars of Twitter messages; (3) Apply the cosine similarity calculation again to automatically match the exemplars to known training results, and (4) Apply accumulative exemplars to classify Twitter messages using a support vector machine approach. The overall correction ratio was over 90% when a series of ongoing and historical wildfire events were examined.

Identifier

85050527884 (Scopus)

Publication Title

International Journal of Digital Earth

External Full Text Location

https://doi.org/10.1080/17538947.2018.1502369

e-ISSN

17538955

ISSN

17538947

First Page

1083

Last Page

1097

Issue

9

Volume

12

Grant

1416509

Fund Ref

National Science Foundation

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