Different Types of Search Engines - Engleski

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Different Types of Search Engines - Engleski
Maturski, Seminarski , Maturalni i diplomski radovi iz ekonomije: menadzment, marketing, finansija, elektronskog poslovanja, internet tehnologija, biznis planovi, makroekonomija, mikroekonomija, preduzetnistvo, upravljanje ljudskim resursima, carine i porezi.


The term "search engine" is often used generically to describe both crawler-based search engines and human-powered directories. These two types of search engines gather their listings in radically different ways. To engineer a search engine is a challenging task. Search engines index tens to hundreds of millions of web pages involving a comparable number of distinct terms. They answer tens of millions of queries every day. Despite the importance of large-scale search engines on the web, very little academic research has been done on them. Furthermore, due to rapid advance in technology and web proliferation, creating a web search engine today is very different from three years ago.
Search engine technology has had to scale dramatically to keep up with the growth of the web. In 1994, one of the first web search engines, the World Wide Web Worm (WWWW) [McBryan 94] had an index of 110,000 web pages and web accessible documents. As of November, 1997, the top search engines claim to index from 2 million (WebCrawler) to 100 million web documents (from Search Engine Watch). It is foreseeable that by the year 2020, a comprehensive index of the Web will contain over two billion documents.

Google

Crawler-based search engines, such as Google, create their listings automatically. They "crawl" or "spider" the web, then people search through what they have found. If you change your web pages, crawler-based search engines eventually find these changes, and that can affect how you are listed. Page titles, body copy and other elements all play a role...

Yahoo!

Yahoo! was founded in 1994 by David Filo and Jerry Yang as a directory of websites. For many years they outsourced their search service to other providers, but by the end of 2002 they realized the importance and value of search and started aggressively acquiring search companies. Overture purchased AllTheWeb and AltaVista. Yahoo! purchased Inktomi (in December 2002) and then consumed Overture (in July of 2003), and combined the technologies from the various search companies they bought to make a new search engine. Yahoo! dumped Google in favor of their own in house technology on February 17th, 2004...

MSN


MSN Search had many incarnations, being powered by the likes of Inktomi and Looksmart for a number of years. After Yahoo! bought Inktomi and Overture it was obvious to Microsoft that they needed to develop their own search product. They launched their technology preview of their search engine around July 1st of 2004. They formally switched from Yahoo! organic search results to their own in house technology on January 31st, 2005. MSN announced they dumped Yahoo!'s search and program on May 4th, 2006....

1.4 The Different Types of Search Engines

Although the term "search engine" is often used indiscriminately to describe crawler-based search engines, human-powered directories, and everything in between, they are not all the same. Each type of "search engine" gathers and ranks listings in radically different ways.Most people find what they're looking for on the World Wide Web by using search engines like Yahoo!, Alta Vista, or Google. According to InformationWeek, aside from checking e-mail, searching for information with search engines was the second most popular Internet activity in the early 2000s. Because of this, companies develop and implement strategies to make sure people are able to consistently find their sites during a search. These strategies oftentimes are included in a much broader Web site or Internet marketing plan. Different companies have different objectives, but the main goal is to obtain good placement in search results.

Sadržaj :

INTRODUCTION 3
1.1 Google 4
1.2 Yahoo! 7
1.3 MSN 9
1.4 The Different Types of Search Engines 10
1.5 Crawler (Spider) – Based Engines 10
1.6 Directories 11
1.7 Link-Based Search Engines 11
1.8 Major types of search engines 12
CONCLUSION 14
REFERENCES 15
Summary 16


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