CS100 Lecture 9: Module 9 Notes
16 Oct 2015
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Part iv: finding data on the web: one word at a time searching is inadequate (not return what you are looking for or too many apges returned) Boolean and : specifies that the webpages of interest are those that appear on both lists. Boolean and not : specifies that the webpages of interest are those that appear on a list exst for those that are included in another list. Boolean or : specifies that the webpages of interest can appear on either lists. Venn diagram: pictorial way to interpret boolean operators. Return webpages that include the term ontario and quebec. The query can be posed as game and money and dice to return webpages that include terms game, money and dice. *note: boolean xor indicates to not pull results if actor and actress exist. Boolean queries contain both and and or operators. In the absence of (), and is always applied before or.
