INLS 180 Day 15 Notes

10/14/02

 

Midterm projects discussed on Wed

 

  1. one-min papers
    1. Point

Relevance a central concept in ILS..ranging from absolute to relativistic

Some people believe computers can eventually gauge qualitative information

 

    1. Questions

How is relevance judged empirically?

AI?

Why this research at AT&T?

How useful is popularity as a quality indicator?

 

  1. The value of information
    1. What makes information valuable?   (e.g., usefulness/utility, timeliness, pleasure, culture/custom)

                                                               i.      info as thing?

                                                             ii.      info as act?

                                                            iii.      info as knowledge?

    1. How are these qualities measured? ($, time, social capital)
    2. What makes a document valuable with respect to a query? (is this absolute or relative?)

 

  1. Relevance impact in IR
    1. Recall:  the proportion of relevant documents in the entire database returned
    2. Precision: the proportion of relevant documents in the returned set.

 

 

  1. Information Use.  Beyond intermediation

 

 

5. One-minute paper concept

What was the big point you learned in class today?

What is the main, unanswered question you leave class with today?