INLS 180 Day 14 Notes

February 21, 2002

1. One-Minute Papers

Big Points

There are many aspects to information value—value is context dependent

Clicking has associated costs

Relevance is a slippery concept

Questions

What aspects of information value are individual specific and which are universal?

Implications of cost on collection development? Redundant services/access?

How much overview and preview to improve system usability?

How to measure X (info, browsing, utility, relevance, media, etc.)

Can we measure from the sender’s point of view (rather than receiver?)

Does volume of information increase value?

Does info as thing, act, or knowledge affect value [thing and act are easier to assess]

Difference between mouse over and mouse down (down=/= click)? [over, down, up, down/up-click]

How many (%) of institutions/businesses build their own DBs and search interfaces?

Are overview tools in production systems?

How much automatic indexing in OV Project?

Who cares about relevance?

2. 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.

3. Reading discussions:

Harter, S. P. (1992). Psychological relevance and information science.  (JASIST online) (Hetna Naik and Obi Mojuetan)
Schamber, L., Eisenberg, M. B., & Nilan, M. S. (1990). A re-examination of relevance: Toward a dynamic, situational definition. (Kristen Miner and Meichun Li)
Amento, B., Terveen, L., & Hill, W. (2000). Does ‘authority’ mean quality? Predicting expert quality ratings of web documents.  Proceedings of ACM SIGIR (Athens, July 24-28).  296-303. ( ACM Digital Library). (Ewa Krol)

4. One-minute paper

What was the big point you learned in class today?

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