"Research on Opinion Mining and Sentiment Analysis" project, under the Machine Learning course of the Postgraduate Programme of Computer Science Department, AUTh.

1. Opinion Mining
Antigone M. Founta
Course: Machine Learning

6. ○

7. Source: http://www.slideshare.net/aerofoilkite/opinion-mining-using-data-mining-techniques

8. «The new OnePlus smartphone, OnePlus X, costs
almost 250 dollars, which is half the price other, equal in
characteristics phones cost. Well, I know I would not buy
this one, how can a smartphone have 3Gb of Ram and
yet still be so cheap? It just doesn’t seem right. I’d much
rather buy the slightly more expensive Moto G from
Motorola, at least I know that I’ll pay a bit more but it
will be worth it.»
Opinion Holder
Opinion
Entity / Object
Aspect / Feature

9. Objective Fact
Subjective Opinion

10. Regular Opinion
Comparative Opinion
● Direct
● Indirect

11. Wheel of Emotions, Robert Plutchik - Source: https://en.wikipedia.org/wiki/Contrasting_and_categorization_of_emotions

15. Source: http://cartoonsy.com/cartoons/opinion-boss-company-work-job-right-1313