Computer Science 1033A/B Lecture Notes - Pagerank

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comp.sci lecture ‘assignment’ november 8 2010
Assignment
-open in new window: in the Target box put _blank
-anchors start with # and go in the Link box
-for mad libs you should have a back to top button (maybe?)
-has to be an email link somewhere (email the comp. sci department:)
-highlight text, Insert>Email Link (in the link box it’ll say mailto:blahblah@blah)
-you can use named anchors to jump to sections of pages, not just the homepage (so you can
link to a specific section of a wikipedia page or something)
-do this by copy/paste the link into the Link box.
-Make the whole image a link: Click on image, type in the link you want it to go to in the Link
box.
-Make different parts of an image links to different things: Hotspots “All About Laura” link the
three words to three different sites
-Don’t use hotspots to make a link of a whole image (get 0, use hotspots for specific parts, not
the whole thing)
-always use http://
-Put “Home” “Madlibs” and “Participating Unis” on the banner; way to use the hotspot thing
-Question on Exam about five dif. types of links
-Use a table to lay everything out. Center it. Put the banner in the table. Table should be 780px
wide and banner 780px wide.
-Don’t make table a percentage.
-Use cell padding or add a little extra column to prevent text from touching
pictures/edges
-Set the border to 0.
-EXAM question on cell padding and spacing (what’s the difference?)
-Layout: 3 by 7 table, merge the top row (for the banner)
-split/merge
-You can do directory searches where things are broken down into subjects, or use search
engines like Google
-Web Crawlers/Spiders make up lists of words on a webpage, makes keywords from the most
‘important words’.
-looks at density of words (how many times a word comes up)
-Google uses the “PageRank” algorithm as one of the factors to decide what order to present
the pages it found to you. There are a lot of pages with Africa in them, but which page about
Africa is the best?
-It gives each page that has the word africa on it a ranking. Those with the higher
ranking get to the top of the list.
-Each page is given a weight (between 0 and 1). Weight determined by: how many links
go to the website. If B Site has a lot of links to it, and then B links to C (that has no
other links) C becomes important too because B is important too.
-not only the amount of sites that link to your site, but the importance of those sites
-Ranks web PAGES not SITES
-Most important place to put the keywords is the TITLE
-The Fold: what you see first before any scrolling is done
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