An Overview of Search Engines Essay

1310 Words 6 Pages
An Overview of Search Engines

Search engines are used all over the world, everyday, by millions of people. These devices are websites that collect and compile data from the internet so that other web pages, links, and different information can be found more easily. There are an unfathomable number of search engines on the internet. Some popular ones include Google, Yahoo, Dogpile, Infoseek, Lycos, Alta Vista, Excite, MSN Search and Hotbot. With so many websites to choose from, it makes it hard to decide which search engine is the best fit for your task at hand.

Each search engine gathers their listings in fundamentally two different ways. One system uses a crawler-based search engine that creates their
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While sorting, it is made to find matches to a search and rank them accordingly from most relevant to least. This allows the user to find their information more easily, and knows which ones are more important and then will be less time consuming.

Human-Powered Directories is another search engine method that is used. This type of search engine plays the role of an open directory. This engine waits for a short description that is submitted to the directory, and then is further researched for the user. It looks for information that matches only the description that was submitted, and then all sites found are displayed. The changing of the webpage has takes no effect, mainly because the improvement of a listing from a search engine has nothing to do with improvement from a directory. The main advantage with human-powered directories is that the user is more likely to get a review from a good site with good content and it being for free, rather than reviewing a poor or weak site.

Each search engine is uniquely different, but in some ways many are the same. Many of which, have software that searches the internet for web pages relating to a specific query. Alta Vista and Excite are two examples of common search engines which index and search the whole web. Yahoo!, WebCrawler, and Lycos also search the internet for websites containing specified key words or

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