How Internet Search Engines Work

1. How Internet Search Engines Work
● The search Robot
● Method of retrieved
● Search Engine
● Spider

2. The Search Robot
● Web crawler, or “spider”
– A program which browses
the Web in a methodical,
automated manner and is
used to create of all the
visited pages for later
indexing by a search
engine

3. Spider
● Internet search the
URLs as the spider
discovers document
and URLs.
● Reference: Wikipedia

4. Method of retrieval
● The document group that retrieves it beforehand is scanned,
and the method for improving the performance when retrieving
it by preparing the index data that a high-speed retrieval
becomes possible is adopted. When retrieving it, a high-speed
in dramatic form retrieval becomes possible because it
accesses this index.

5. Search Engine
➢ There are lots of information on the WWW, and
you can get that to use Search Engine. Web
pages, images and...
➢ Search Engine, for example:
Google, Yahoo, Msn, and so on.
Their Engine return results in a different way.

6. REFERENCE
● Medicated development
– http://www.madicted.net/web-glossary/term/w
● Wikipedia
– http://ja.wikipedia.org/wiki/%E3%83%A1%E3
● Google(image)
– http://images.google.co.jp/imghp?hl=ja&tab=