Type

Conference Proceedings

Authors

Thomas Brendan Murphy
Michael Salter-Townshend

Subjects

Journalism & Mass Media

Topics
classification negative impact irish media crowdsourcing pattern recognition human computation the irish economy sentiment analysis news web sites mass media objectivity user generated content classification

Sentiment analysis of online media (2012)

Abstract A joint model for annotation bias and document classification is presented in the context of media sentiment analysis. We consider an Irish online media data set comprising online news articles with user annotations of negative, positive or irrelevant impact on the Irish economy. The joint model combines a statistical modelfor user annotation bias and a Naive Bayes model for the document terms. An EM algorithm is used to estimate the annotation bias model, the unobserved biases in theuser annotations, the classifier parameters and the sentiment of the articles. The jointmodeling of both the user biases and the classifier is demonstrated to be superior toestimation of the bias followed by the estimation of the classifier parameters.
Collections Ireland -> University College Dublin -> CASL Research Collection
Ireland -> University College Dublin -> Clique Research Collection
Ireland -> University College Dublin -> Computer Science Research Collection
Ireland -> University College Dublin -> Institutes and Centres
Ireland -> University College Dublin -> School of Computer Science
Ireland -> University College Dublin -> Mathematics and Statistics Research Collection
Ireland -> University College Dublin -> Complex and Adaptive Systems Laboratory
Ireland -> University College Dublin -> Computer Science Research Collection
Ireland -> University College Dublin -> Clique
Ireland -> University College Dublin -> Clique Research Collection
Ireland -> University College Dublin -> CASL Research Collection
Ireland -> University College Dublin -> College of Science
Ireland -> University College Dublin -> Clique
Ireland -> University College Dublin -> Complex and Adaptive Systems Laboratory
Ireland -> University College Dublin -> College of Science
Ireland -> University College Dublin -> School of Mathematics and Statistics
Ireland -> University College Dublin -> School of Computer Science
Ireland -> University College Dublin -> Mathematics and Statistics Research Collection
Ireland -> University College Dublin -> School of Mathematics and Statistics
Ireland -> University College Dublin -> Institutes and Centres

Full list of authors on original publication

Thomas Brendan Murphy, Michael Salter-Townshend

Experts in our system

1
Thomas Brendan Murphy
University College Dublin
Total Publications: 38
 
2
Michael Salter-Townshend
University College Dublin
Total Publications: 12