Comparison of several famous English search engines

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AltaVista





----AltaVista is a fast, powerful keyword search engine that can perform extremely complex searches, but the user first has to master its options. If you're serious about web search, it's a smart strategy to master AltaVista. AltaVista can search for more than one word, you just put the phrase in quotes, such as: "Tiyatien care Facilities" ("Health facilities"). AltaVista also has many options for further in-depth search.  It can also branch into a directory-like channel area called "zones", which makes extensive searches for classes such as health, journalism, and tourism.


Search Type: keyword type


Search options: Simple (easy) or Advanced (advanced) search to narrow your search again.  You can use the Boolean operator "and", "or".


Advantages: User-friendly interface, online Help files complete, fast search, can identify case and special nouns, the largest database, the Web and usenet can be searched.  Users can also translate the search results page into several languages.


Disadvantage: The number of pages that appear on the same site is too frequent.





Excite





Excite is a conceptual search engine. This means that it will first figure out what you are saying, not just search your words.  This gives excite greater flexibility.


Search Type: Conceptual and keyword type.  Excite claims to be an "intelligent" search engine.


Search options: Simple and fine.


Search Refinement Method: Recommend to use more keywords, and make several key selection.  Can be searched with and and or, and preferred.


Advantages: Search results are concise, click on the icon next to each summary to get a similar reference to the page. The index size is large.  In the search results, the most important words are highlighted in the high brightness area, so that people can know.


disadvantage: The result of the search cannot indicate its format or the size of the file in megabytes.


　　


Infoseek





InfoSeek now uses a new technology that is bigger, faster and more accurate than previous search engines.  Like Yahoo, Lycos and Excite, InfoSeek also provides a web guide.


Search Type: keyword type


Search options: Simple but powerful. Infoseek now uses the UltraSEEK software engine. The Web page adds a total directory to search for topics.  Users can also search for images.


Search Refinement Method: Can be case-sensitive, no Boolean operators, but can use the + and-number to help refine the search.


Advantages: Fast, search results give the URL URLs, and show the size of the site. Allows users to use uppercase letters and idioms.  InfoSeek now offers a few databases, such as stock quotes, company information, e-mail addresses, references to similar dictionaries, and zip code guides.


disadvantage: In full text search (WEB sites option) can be directly used in Simplified Chinese, but the content is not rich.


　　


Yahoo





Yahoo is an important web resource and is not a purely search engine. It is indexed by topic hierarchy, allowing users to drill down to specific pages from a general Web page.  Yahoo has the function of organizing Web pages and cataloging pages.


Yahoo will also automatically feed your queries to other major search engines if users need them.


Search Type: keyword type.


Search options: Simple (easy) and Advanced (Advanced)


Search Refinement methods: Boolean operators and And OR.


Advantage: It is convenient to navigate the topic directory. If users know what to look for, Yahoo should be your first choice on the web. Click Search Engine Details. (Search engine details) for more detailed information.  If Yahoo can't give you a goal, it will automatically send your query to HotBot for further search via index.


drawback: Yahoo is currently cataloguing only part of the World Wide Web.


　　


AOL





because of the cooperation of AOL (American Online website) and Excite, WebCrawler's search engine and catalogue will be combined into excite.


Search Type: keyword type.


Search options: Easy (Simple) and fine (refined)


Search Refinement Method: Used "and" or "any" in the past.   All Boolean operators have now been added, including and, or, and not, ADJ (near adjacent), and near (approximate).


Advantages: Easy to use.   A list of hyperlinks and summaries is listed in the results of the search, as selected by the user.


Disadvantage: Since the addition of Boolean operators there is no other sophisticated search methods.


　　


Lycos





Lycos is a powerful, all-encompassing search engine.  But Lycos gradually became a subject index like Yahoo, with a strong ability to search for images and sound files.


Search Type: keyword type


Search options: Basic and Advanced


Search Refinement Method: now has full Boolean operation of the ability (can use the choice of Drop-down form).


Advantages: A large database, gives a comprehensive result, if the use of advanced search to display the full search results of the brief description.  Lycos are sorted by search frequency and are most reliable in front of the index.


disadvantage: The speed is a bit slow.





HotBot





HotBot (formerly known as Inktomi) is fast searching.  The new HotBot search engine allows you to search for names (you can choose "the person" from the dropdown menu).





Search Type: keyword type





Search options: Simple (with easy), flushes (fixed), Expert (expert) three options.





Fine Search methods: Many types, including idioms, names, and in the dropdown box similar to the Boolean choice.  When searching with the "expert" option, you can search by date and by type (Java, JavaScript, Shockwave, VRML, and so on).





advantages: Because of the use of parallel processing, the database is also allocated on several workstations, so fast.


disadvantage: Some restrictions on Boolean operators, the online Help file is slightly worse.