Answer 1:
Creating a basic search engine is a relatively
simple task for a good computer programmer.
However, it does require that you have a good
understanding of a computing language such as C or
Perl. Basically, you have to write and execute a
program that will request information from a
server that hosts a webpage. Once you have that
information, your program has to store and process
it so that when a user enters in search terms, the
relevant information from the server will be
presented. The following is a more detailed
description on the use of Perl, which is becoming
quite popular for handling of large amounts of
text. alistapart |
Answer 2:
There are two parts: crawling and searching.The
crawl is where you make a list of where everything
is on the Internet. The search is where you make
use of your results to find a particular
page. This isn't a very efficient example,
but it gives you an idea whereto start. Write a
"crawler" program that downloads a web
page,remembers the address (URL) of the web page
and all the words on it,and extracts all the links
to other web pages. Create a separate file for
each word and append the URL to that file. Then
have the program pick one of the links which it
hasn't seen before, download the new web page, and
repeat. You can only do the search after the
crawl has covered a lot of web pages. When you're
ready to do the search, select the files
corresponding to the words you're searching for,
and find the URLs that are in all of those
files. Also, there are standards on the
Internet for how crawlers are supposed to behave.
Some sites like eBay don't want you recording and
"remembering" stale auctions. Most sites have a
file called robots.txt that defines what pages the
crawler is or is not supposed to remember. For
example,http://santabarbara.craigslist.org/robots.txt
says every crawler("User-Agent: *") should ignore
any URL which starts with
"/forums"(http://santabarbara.craigslist.org/forums). | Answer 3:
A search engine is just a computer program, so
all you really need is a computer language and a
compiler. However, I don't know what the
components that go into a search engine are, or
how it finds what it searches for, and my
programming skills are those of a weak amateur at
best, so that's about as much help as I can give,
limited though it is. Sorry!
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