September 14, 2017

Thursday of Week 4

Topics of the day

| Online | Questions | Assignments | Photos |

Online references

Questions and exercises

  1. Give three examples of information retrieval systems or information retrieval tasks you've used a computer to perform.
  2. A system designed to find photos that include animals out of a store of nature photos found 15 of the animal photos and correctly identified 115 of the animal-free nature photos as not having animals; but it marked 5 photos as having animals when they didn't, and missed 10 of the photos that did have animals. What are the precision and recall of this system?
  3. If I wanted to build a system that could guarantee 100% recall, how could I trivially do that?

Assignments

Today

Upcoming

Board photos