Transcript Setting up a search engine - Barefoot Computing Barefoot Computing

Setting up a search engine
KS 2 Search: appreciate how results are
selected
Today we are learning about:
Search engines
● I can explain how search engines
select results
Search engine’s index
1.
engines
build
up an index
the information
on the
2. Search
Web crawlers
are
programs
whichof
move
across the world
world
wideby
web.
They do
this
using programs
called web
wide web
following
links
between
web pages.
crawlers.
Search engine’s index
3. They take a copy of the web pages they visit to build up a
search engine’s index, which is stored on the search
engine’s servers.
Search engine’s index
4. Search engine’s use the index stored in their servers to
respond to search queries.
Search bar:
Computing
Search engine’s server
Search results:
These pages have the information you
require.
Main task: Creating your index
● Working in pairs you have 10 mins to index as many of
the pages as possible - the bigger your search engine’s
index the better you’ll be able to respond to search
queries!
● Follow the links to the different web pages and read
through the content.
● Add the web page’s address against each keyword that
appears on the web page.
Main task: Responding to searches
Search bar:
Today we are learning about:
Search engines
● I can explain how search engines
select results