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Lab 10

Lab 10. Keerthi Nelaturu. What is a Crawler? . Keeps track of all the and web pages Mainly used to help search engines Searches a web page for links until there are none to find. Example : www.google.ca. Breadth First Search. Crawler Implementation - HTML. Checks for the URL pattern

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Lab 10

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  1. Lab 10 KeerthiNelaturu

  2. What is a Crawler? • Keeps track of all the and web pages • Mainly used to help search engines • Searches a web page for links until there are none to find. • Example : www.google.ca

  3. Breadth First Search

  4. Crawler Implementation - HTML • Checks for the URL pattern • Gets the content of the page Important Methods : • hasMoreUrls • nextUrl

  5. Crawler Implementation - Path • Queue used in BFS algorithm uses Path to keep track of the URL’s.

  6. Crawler Implementation - Crawler • Implements BFS using Linked Queue. • Uses Path class to store all partial solutions Important Methods: • isValid • Solve – BFS in this method

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