Todays Quote - PowerPoint PPT Presentation

1 / 16
About This Presentation
Title:

Todays Quote

Description:

Searching 'Search results are only as good as the query you pose and ... Dogpile(Metasearch) Metacrawler(Metasearch) Mama (Metasearch) Savycrawler(Metasearch) ... – PowerPoint PPT presentation

Number of Views:178
Avg rating:3.0/5.0
Slides: 17
Provided by: Comp638
Category:
Tags: dogpile | quote | todays

less

Transcript and Presenter's Notes

Title: Todays Quote


1
Searching
Search results are only as good as the query you
pose and how you search. There is no silver
bullet
2
Some search engines (There are more than 2500)
  • Altavista
  • Ask Jeeves
  • Google
  • Infoseek
  • Northernlight
  • Excite
  • Hot Bot
  • Go
  • About
  • Magellan
  • NetFind(AOL)
  • Lycos
  • Inktomi
  • Looksmart
  • Dogpile(Metasearch)
  • Metacrawler(Metasearch)
  • Mama (Metasearch)
  • Savycrawler(Metasearch)

3
The World Wide Web
  • What is a search engine?
  • Program used to find Web pages pertaining to a
    specific topic

4
The World Wide Web
  • What is a hit?
  • Any Web page name that lists as the result of a
    search

5
  • What is a directory?
  • Search tool with organized set of topics and
    subtopics
  • Lets you find information by clicking links
    rather than entering keywords

6
Facts
  • 1 Billion or more Internet Documents
  • Combining multiple search criteria in a given
    search can increase the likelihood of finding the
    information desired by a factor of 3.5 or more
  • 50 of searches find broken links

7
Search Tools
  • Web Directory
  • Compiled by humans and organized by subject
    matter
  • Analogy Card catalog in a library
  • Smaller size - hand picked, credible sites that
    give in-depth information of subject
  • Usually less references than search engines

8
Search techniques
  • Specific to the engine used
  • Keyword searching
  • Type in string of words
  • Natural language queries - conversational syntax
  • askjeeves, excite, lycos

9
Search Tips
  • Natural Language
  • Boolean Algebra (AND,OR,NOT)
  • Mozart OR Beethoven
  • Symbols , , -_
  • Cherokee jeep
  • quotation marks for phrases
  • great barrier reef
  • python-monty
  • HotelsParis-Bed and Breakfast

10
General Search Tips
  • Enter precise search terms - be specific
  • Enter singular terms, not plural
  • Enter multiple spellings, multiple searches
  • Use double quotes for specific words in precise
    order
  • Wildcards (ie - comput)
  • Use capitalization for proper nouns
  • Use synonyms or alternate spellings (ex. Car and
    automobile)

11
Evaluating Information
  • Accuracy and Authority
  • Is there an author? Who wrote the page? Can you
    contact them?
  • What are the authors qualifications?
  • Why was the document produced?
  • Is there an e-mail address provided for
    questions?
  • Is there an author or is it a Webmaster?
  • What Institution is hosting the site dissect
    the URL (look at the domain name)?

12
Evaluating Information
  • Objectivity
  • What are the goals of the page?
  • Inform, advertise or convince
  • How detailed in the information?
  • Opinions or facts
  • Currency
  • When was it produced?
  • Are there dead links?
  • When was it updated?
  • Coverage
  • How in-depth is the material?
  • Do links lead to relevant information?
  • Can you find the same information elsewhere?

13
Google
  • 100 million searches every day
  • 97 of users find what they need most of the time
  • 15 million visitors each month
  • Contains its own system of measuring relevancy,
    partially based on number of links to that site
  • No paying for ranking
  • 40 computer science PhDs maintain it
  • Index stored on 10,000 PCs
  • Google powers Yahoo and now AOL

14
Features
  • Image search
  • Cached pages
  • Type in a name, city, state get their phone
    number and address
  • Type in address, city, state get a map of the
    location
  • www.google.com/unclesam searches only govt
    websites

15
More Googleing
  • Toolbar.google.com - adds the Google Toolbar to
    Internet Explorer
  • Directory.google.com to get to their directory
  • Not great for broad-based searches best for more
    specific

16
Some searches to try
  • Shutdown articles 95 98 sitemicrosoft.com
  • General format
  • Search termsite name
  • Great site lets go there now
  • www.searchenginewatch.com/facts/powersearch.html
Write a Comment
User Comments (0)
About PowerShow.com