What does a computer have to do in order to understand a natural language sentence?
What is ambiguity?
Why is natural language processing (NLP) difficult for computers?
What is bag-of-words representation? Why do modern search engines use this simple representation of text?
What are the two modes of text information access? Which mode does a web search engine such as Google support?
When is browsing more useful than querying to help a user find relevant information?
Why is a text retrieval task defined as a ranking task?
What is a retrieval model?
What are the two assumptions made by the Probability Ranking Principle?
What is the Vector Space Retrieval Model? How does it work?
How do we define the dimensions of the Vector Space Model? What does “bag of words” representation mean?
What does the retrieval function intuitively capture when we instantiate a vector space model with bag of words representation and bit representation for documents and queries?
