Brief Profile:

 
Overview
Home page features
Advanced Search Page
Phrases
Boolean
Field Searching
Truncation (stem searching)
Output Options
Directory
Summary
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Overview

Google is a "popularity" engine and ranks records in its very large database based on their popularity, i.e., the degree to which other pages (especially other popular pages) refer (link) to a page. Google very quickly achieved a widespread popularity of its own due to the effectiveness of this ranking method---  and the extreme simplicity of the search interface. In June, 2000, Google claimed the title of "largest," with 560 million fully indexed records and another 500 million partially indexed records.  Searching options are very limited, with no truncation, negligible field searching, no case sensitivity, etc.  Google retrieves records based on an ANDing of all terms and ranks the output by primarily by popularity, but with some consideration for the proximity of search terms within the record..  Google makes use of Open Directory and includes matching Open Directory records automatically in search output, but unlike other search engines, ranks the Open Directory content based upon Google’s measure of popularity.  Google's output is unique among the major search engines in that it allows you to go to the page as it is currently on the Web, or to go to a "cached" copy which Google stored when it retrieved the page. Google contains about 1 billion records, half of them fully indexed.



 
 
 
 
 
 
 
 

Strengths
Weaknesses
  • Very useful if you need "popular" pages
  • The "popularity" approach can quickly lead to very relevant records.
  • "Cached" option in Google's output is sometimes useful for finding slightly earlier versions of a page.
  • Colorful logo
 
  • Pretty limited search functionality
 
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On Google's home page you'll find:

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Search Features Provided by Google (Home Page)




Phrases
 
To search for a phrase, use quotation marks.




Boolean
 

 


Field Searching


         Title
         allintitle:
          Example:
                allintitle:cornwall
 

Title can be more easily searched using Google's Advanced version and seleinging the title option in the Occurences box.


          URL
          allinurl:
            Example:
                allinurl:cam.ac.uk
 

URL can be more easily searched using Google's Advanced version and selecting the URLoption in the Occurences box.
         

          Site  (Host)
          term site:url
          Example:
                training site:onstrat.com

This will retrieve sites from a particular host.  It seems that you cannot use the site: part alone, but must combine it with another term. The above example will retrieve pages from the Online Strategies site which include the word "training".  It will work on adjoining parts of a url (tradoc.army.mil, army.mil), but you must have at least the domain (.com, .org, .mil, etc.) included for it to work.

Truncation

 
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Advanced Search Page

This page, introduced in July, 2000, provides easier (more obvious) access to functions which were already present on the home page and preferences (Language, Display & Filtering Options) page.

You can:

It does also provide links to the several specialized databases which Google has created (Apple Macintosh, Linux, University Searches, BSD Operating System, US Government).  Note that these are subsets of the main database.
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Output


Directory

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Summary

Keep in mind that Google is a "popularity" engine. The high relevance this can produce has quickly led to Google's widespread use. It now has a database size which puts it up there with the largest engines, which means that it is also good for finding some more obscure items.  The "cached" page option in output may be useful when tracking down pages that don't exist anymore. Give this engine a try and see if it works for you.
 
 
 
 
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