Identifying Witness Accounts from Social Media Using ImageryReportar como inadecuado


Identifying Witness Accounts from Social Media Using Imagery


Identifying Witness Accounts from Social Media Using Imagery - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Department of Infrastructure Engineering, University of Melbourne, VIC 3010, Australia





*

Author to whom correspondence should be addressed.



Academic Editors: Marinos Kavouras and Wolfgang Kainz

Abstract This research investigates the use of image category classification to distinguish images posted to social media that are Witness Accounts of an event. Only images depicting observations of the event, captured by micro-bloggers at the event, are considered Witness Accounts. Identifying Witness Accounts from social media is important for services such as news, marketing and emergency response. Automated image category classification is essential due to the large number of images on social media and interest in identifying witnesses in near real time. This paper begins research of this emerging problem with an established procedure, using a bag-of-words method to create a vocabulary of visual words and classifier trained to categorize the encoded images. In order to test the procedure, a set of images were collected for case study events, Australian Football League matches, from Twitter. Evaluation shows an overall accuracy of 90% and precision and recall for both classes exceeding 83%. View Full-Text

Keywords: image category classification; crowdsourcing; social media; transfer learning; visual bag-of-words image category classification; crowdsourcing; social media; transfer learning; visual bag-of-words





Autor: Marie Truelove * , Kourosh Khoshelham, Simon McLean, Stephan Winter and Maria Vasardani

Fuente: http://mdpi.com/



DESCARGAR PDF




Documentos relacionados