Discussion Class 6

1
Discussion Class 6

• Information Retrieval User Requirements

2
Question 1 Effective retrieval (a) In what
ways are recall and precision good measures of
effective retrieval? (b) Can you suggest other
measures? (c) Are these measures appropriate
when searching materials other than text, e.g.,
image collections?
3
Question 2 Distributed retrieval (a) What makes
distributed retrieval difficult? (b) Explain the
problem with ranking?
4
Question 3 Indexing and database
construction Some of Croft's points are
concerned with the creation of databases and the
indexing of them. Which points fall into this
category?
5
Question 4 Integration with other
systems Database systems and text retrieval
systems are usually separate products developed
by separate organizations. (a) Why should they
want to develop combined products? (b) Why is
it difficult to merge database systems and text
retrieval systems?
6
Question 5 User interfaces (a) What are
the user interface issues in information
retrieval? (b) What has this to do with
"magic"?