Type

Conference Proceedings

Authors

Alan F. Smeaton
Cathal Gurrin
Paraic Sheridan
Paul Ferguson
Adam Bermingham
Michael Davy
Neil O'Hare

Subjects

Computer Science

Topics
human sentiment analysis opinion mining topic financial blogs information storage and retrieval systems approaches machine learning

Topic-dependent sentiment analysis of financial blogs (2009)

Abstract While most work in sentiment analysis in the financial domain has focused on the use of content from traditional finance news, in this work we concentrate on more subjective sources of information, blogs. We aim to automatically determine the sentiment of financial bloggers towards companies and their stocks. To do this we develop a corpus of financial blogs, annotated with polarity of sentiment with respect to a number of companies. We conduct an analysis of the annotated corpus, from which we show there is a significant level of topic shift within this collection, and also illustrate the difficulty that human annotators have when annotating certain sentiment categories. To deal with the problem of topic shift within blog articles, we propose text extraction techniques to create topic-specific sub-documents, which we use to train a sentiment classifier. We show that such approaches provide a substantial improvement over full documentclassification and that word-based approaches perform better than sentence-based or paragraph-based approaches.
Collections Ireland -> Dublin City University -> Subject = Computer Science: Information storage and retrieval systems
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: National Centre for Language Technology (NCLT)
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres
Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Computing
Ireland -> Dublin City University -> Subject = Computer Science
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: CLARITY: The Centre for Sensor Web Technologies
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing
Ireland -> Dublin City University -> Subject = Computer Science: Machine learning

Full list of authors on original publication

Alan F. Smeaton, Cathal Gurrin, Paraic Sheridan, Paul Ferguson, Adam Bermingham, Michael Davy, Neil O'Hare

Experts in our system

1
Alan F. Smeaton
Dublin City University
Total Publications: 475
 
2
Cathal Gurrin
Dublin City University
Total Publications: 206
 
3
Paraic Sheridan
Dublin City University
Total Publications: 5
 
4
Adam Bermingham
Dublin City University
Total Publications: 15