Ques: You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: Nope didn't work for long Product review: i worked wonderful for the first week and then it quit. thought it was the batteries bought new ones and still doesn't work. i don't know what to do with it
Ans: decrease

Ques: You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: Gibson Books Product review: Wow, these books are incredible. Such a good price for 100 year old books I have been looking forever. Thanks!
Ans: increase

Ques: You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: What a shameful letdown Product review: Shameful attempt at a hybrid of horror, action and suspends that cast Keanu Reeves as occult detective John Constantine in an adaptation of the vertigo comic book that loses it's edge and goes for the gusto in flat out stupidly with a boring acting turn by Keanu Reeves who just does not come across well in the role. The story just makes no sense at all and feels like it needed a good rewrite for everything to truly come together and the direction just does help move things along. Other than the great scene in which Rachel Weisz get torn out of a building, most of the special effects are not very good and could have been improved during post production. As for the rest of the actors, only Rachel Weisz manages to give a compelling performance despite the bad script in which she had to work with and Peter Stormare does a great five minute walk on as prince of darkness. Nether of them however can save this runaway train that should have been checked before it left the tracks.
Ans: decrease

Ques: You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: An elegant introduction to heavy tails and skewness Product review: The book provides a very elegant introduction to heavy tails and skewness, and their implications for risk management, portfolio selection, and option pricing. The "theoretical part" of the book is a gem in the way it eases the reader into (advanced) quantitative concepts such as copulas, stable distribution, risk measures, time-series models, etc. There are many other texts out there that provide thorough technical desciptions of the above-mentioned concepts. However, rarely a book has presented them so effortlessly and with so much intuition. A reader interested in contemporary issues in empirical finance will surely find this book very useful.
Ans: