The document discusses opinion mining using data mining techniques, illustrated through a comparison of smartphones, particularly the OnePlus X and Moto G. It highlights different types of opinions and classifications related to entities and their features. The content includes references to emotional aspects of opinion formation.

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