1. What are the common challenges that sentiment analysis has to deal with? 2. What are the most popular application areas for sentiment analysis? Why? 3. What is a hub? Discuss the hyperlink-induced...

1. What are the common challenges that sentiment analysis has to deal with?

2. What are the most popular application areas for sentiment analysis? Why?

3. What is a hub? Discuss the hyperlink-induced topic search (HITS) algorithm to calculate hubs and authorities.

4. What is a search engine? Why are they important for businesses?