Computer Science 180
Web Design
Fall 2011, Siena College
Lecture 19: More Web Search
Date: Friday, November 11, 2011
Agenda
- Announcements
- 11-11-11
- Exam 2 information
- In lab, Monday, November 21
- Focus on topics since last exam, up to Wednesday's class
- More details coming next week
- Review time in class Friday, November 18
- Lecture assignment 18 recap
- Examples of PageRank
- Image and other media search
- this is a hard problem!
- the ESP game
- Google's search by image
Lecture Assignment 19
Due at the start of class, Wednesday, November 16.
Please submit answers to these questions
either as a hard copy (typeset or handwritten are OK) or by email to
jteresco AT siena.edu by the start of class. Please use a clear subject line
when submitting by email (e.g., CS 180 Lecture
Assignment 19, Joe Student). We will discuss these
questions at the start of class, so no late submissions are
accepted.
- Consider the class example (from the notes) where we had four
web pages and a collection of links among them. Add a link from
page B to page A and recompute the PageRanks of the four pages. You
may stop after 4 iterations. (6 points)
- Suppose you were going to try to extract metadata about images
on the web using only textual information from the HTML documents
that contain or link to those images. Where on the page (e.g., in
or near which tags) would you look for meaningful information that
might lead to good image keywords useful in an image search? (4 points)
Links