|
|
|
|
|
|
|
|
A Search Engine Explained |
|
|
|
|
Written by JustinHarrison
|
|
Monday, 24 August 2009 |
|
A search engine, such as Google and Yahoo, are tools that allow users to find information on the World Wide Web by searching with a specially designed tool. The results of a search are organized into a list which includes web pages, information about them and links to them. In some cases, it includes images. Search engines are operated algorithmically in conjunction with human editing.
by JustinHarrison
A search engine, such as Google and Yahoo, are tools that allow users to find information on the World Wide Web by searching with a specially designed tool. The results of a search are organized into a list which includes web pages, information about them and links to them. In some cases, it includes images. Search engines are operated algorithmically in conjunction with human editing.
Web crawling, indexing and searching combine in that order to obtain the most accurate results. Mass amounts of information on millions of web sites are stored and then retrieved relevant to the user's request. A web crawler is also known as a spider, it analyzes every link and indexes all information for faster retrieval.
Words found inside the pages are extracted from the description and allocated appropriate meta tags. Meta tags are also taken from contents the webpage itself to establish its relevance. Data from the sites is collected, indexed and stored to be retrieved when it's needed.
Companies such as Google store all or part of the source web page, while AltaVista stores every page word for word. The information stored and indexed is known as the cache, it allows for instant updating and keeps the searching filtered with ease. An important factor for a successful search engine is its ability to provide active and useable information with minimal to no linkrot. The cache also saves an archive of a removed source that can later be access by the user after the site is updated.
Cache storage helps in keeping track of the updates on the web page and helps in filtering. The system of indexing used by Google makes sure that only the updated contents are made available to its users by doing away with linkrot. The cache has further usage in finding the updated content that has been removed. It helps in recovering the contents as an archives source. The search process starts with a user keying in some keyword or keyword phrase, related to the content they are looking for, in the search box of an engine. The engine then uses the process of indexing to produce web pages that suit the search phrase the most. The list will include a short description of the contents that each webpage has to offer.
Many filters and specialized web crawlers create a proprietary method for analyzing web pages for results. While a keyword can be found a very large amount of websites not all sites are relevant to the users purpose and companies pride themselves on result relevancy.
Increasingly search engines have been implementing a page ranking system in which each page's descriptions, keywords and content are scanned for relevancy to the inputted keyword and their index. Pages with higher ranks get seen more often at the top of the list. If a site is linked to a high ranking website that site receives a vote that increases its ranking.
From the Webmaster: "Having the opportunity to share my hobbies and interests with so many people around the world gives me great satisfaction. As a bonus, I blog and produce websites about topics that interest me and receive ad revenue from the websites and Blogs."
You can live like this too. Get your domain name and set up a blog on your favorite place or topic. No come-ons. No "Get-Rich-Quick" promises. The results are worth the time and effort needed to build a REAL business.You can start your first or your fiftieth Blog or website to build long- term, ever-growing profits that can take you where you want to go.
For less than $10 dollars a year for a domain name and $3.95 a month for basic blog hosting you can start to earn from your hobby or interest
Click here to sign up for a domain name and Blog hosting to begin.
Or Click here to learn more about starting a blog or website for profit
|
|
