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Internet Research

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Internet Research

  1. 1. Internet Search Strategy
  2. 2. Advantages <ul><li>The ability to learn faster than your competitor may be the only sustainable competitive advantage. </li></ul><ul><li>Peter Senge, The Fifth Discipline </li></ul>
  3. 3. Outline <ul><li>Background </li></ul><ul><li>Browsers </li></ul><ul><li>Search Engine </li></ul><ul><li>Directory </li></ul><ul><li>Blog </li></ul><ul><li>Web 2.0 </li></ul><ul><li>Internet Politics </li></ul>
  4. 4. Background
  5. 5. History
  6. 6. Definition of Net The Internet is the publicly accessible worldwide system of interconnected computer networks that transmit data by packet switching using a standardized Internet Protocol (IP). It is made up of thousands of smaller commercial, academic, domestic and government networks. It carries various information and services, such as electronic mail , online chat , and the interlinked web pages and other documents of the World Wide Web .
  7. 7. How big is the web? <ul><li>56 billion static web pages are publicly-available on the World Wide Web. </li></ul><ul><li>Another estimated 6 billion static pages are available within private intranet sites </li></ul><ul><li>200+ billion database-driven pages are available as dynamic database reports (&quot;invisible web&quot; pages) </li></ul><ul><li>Google.com indexes 9.75 billion web pages. </li></ul>
  8. 8. WWW domination
  9. 9. Deep Web <ul><li>The invisible web, , a vast repository of information that search engines don't have access to, such as databases </li></ul><ul><li>Private networks, called intranets, that are not actually hooked up to the Web </li></ul><ul><li>Forms , like ColdFusion or CGI </li></ul><ul><li>Password-protected sites , like a university library </li></ul><ul><li>Sites that intentionally, for various reasons, keep their information from being indexed by search engine spiders </li></ul>
  10. 10. Today <ul><li>200 Billion </li></ul><ul><li>Only 50 Billion is static web </li></ul><ul><li>Geogle only indexed 10% </li></ul><ul><li>Daily Web Space increase 100,000 websites </li></ul>
  11. 11. Key Players Larry Page Co-Founder & President, Products Sergey Brin Co-Founder & President, Technology
  12. 13. Sir &quot;Tim&quot; John Berners-Lee <ul><li>the inventor of the World Wide Web and director of the World Wide Web Consortium </li></ul>
  13. 14. Search Strategy
  14. 15. Search Strategy <ul><li>Choose appropriate key words </li></ul><ul><li>b. Select right tools </li></ul><ul><li>c. Evaluate Information </li></ul>
  15. 17. Sharing <ul><li>Interesting sites? </li></ul><ul><li>Your frustration? </li></ul><ul><li>Questions ? </li></ul>
  16. 18. Your needs? <ul><li>1. What information you want to </li></ul><ul><li>have right now? </li></ul><ul><li>A.________________________ </li></ul><ul><li>B. _______________________ </li></ul><ul><li>C. _______________________ </li></ul>
  17. 19. Tools <ul><li>Search engine </li></ul><ul><li>Meta Search </li></ul><ul><li>Specialized search engine </li></ul><ul><li>Directory </li></ul><ul><li>Specialized Directory – academy, alexa </li></ul><ul><li>Blog </li></ul><ul><li>RSS </li></ul><ul><li>Torrent </li></ul>
  18. 20. Tools for Multimedia <ul><li>Sound - Podcast </li></ul><ul><li>TV – Online TV </li></ul><ul><li>Photo – flickr </li></ul><ul><li>Invisible Web </li></ul>
  19. 21. Browser
  20. 22. Definition <ul><li>A web browser is a software application , technically a type of HTTP client , that enables a user to display and interact with HTML documents hosted by web servers or held in a file system . </li></ul>
  21. 23. HTML & HTTP <ul><li>In computing, HyperText Markup Language ( HTML ) is a markup language designed for the creation of web pages with hypertext and other information to be displayed in a web browser . HTML is used to structure information — denoting certain text as headings, paragraphs, lists and so on </li></ul>
  22. 24. Browser - functions <ul><li>Mozilla Firefox – tab, extensions </li></ul><ul><li>Internet explorer – high security </li></ul><ul><li>Opera – sessions, ligh </li></ul>
  23. 28. Browsers <ul><li>Internet Explorer (decoder) </li></ul><ul><li>Bookmark/Favorite </li></ul><ul><li>Home Page (Google, Yahoo) </li></ul><ul><li>Back Forward </li></ul><ul><li>Refresh (7 seconds) </li></ul><ul><li>History </li></ul><ul><li>Text size </li></ul><ul><li>Encoding </li></ul>
  24. 29. Search Engine
  25. 30. Definition Definition: A search engine is a searchable database of Internet files collected by a computer program (called a wanderer, crawler, robot, worm, spider).
  26. 31. search engine Spider: Program that traverses the Web from link to link, identifying and reading pages Index: Database containing a copy of each Web page gathered by the spider Search and retrieval mechanism: Technology that enables users to query the index and that returns results in a schematic order
  27. 32. <ul><li>Single </li></ul><ul><li>Google.com </li></ul><ul><li>Vivisimo.com </li></ul><ul><li>Meta </li></ul><ul><li>All the Web </li></ul><ul><li>Dogpile </li></ul>Internet search engines can be the most useful--or useless--tools on the Internet Search Engines
  28. 40. Boolean Search Add +ABC Minus -ABC Default DEF OR ABC Exact phrase “ABC” Wild card ABC* Synonym ABC~
  29. 41. Boolean                                                       OR 33702660 NOT 81497 AND 1677
  30. 42. effective habits: <ul><ul><li>Study Search Engine Help Files </li></ul></ul><ul><ul><li>Use The &quot;Three Strikes&quot; Rule </li></ul></ul><ul><ul><li>Don't Play Favorites </li></ul></ul><ul><ul><li>Use Specialized Search Sites </li></ul></ul><ul><ul><li>Keep your book mark well classified </li></ul></ul>
  31. 43. TEST <ul><li>Use google to find the three items you have listed down </li></ul>
  32. 44. Directory
  33. 45. <ul><li>pick by human </li></ul><ul><li>hierarchy </li></ul><ul><li>small portion of cyberspace </li></ul><ul><li>low noise </li></ul>Characters
  34. 47. General Directory <ul><li>Yahoo - largest collection of topical collections </li></ul><ul><li>Google Web Directory – </li></ul><ul><li>using the Google link ranking technology; Google search results are also included with directory results </li></ul><ul><li>Open Directory – volunteers to pick the web pages </li></ul>
  35. 50. Specialized Dir <ul><li>About - large collection of topical collections gathered subject specialists </li></ul><ul><li>Alexa – List down the highly ranked websites </li></ul><ul><li>100times – free education sites for business studies </li></ul>
  36. 54. <ul><li>INFOMINE - large collection of scholarly Internet resources collectively maintained by several libraries, including those from the University of California </li></ul><ul><li>The Internet Public Library - large, selective collection from the University of Michigan </li></ul><ul><li>The WWW Virtual Library - highly respected guides to many disciplines sponsored by the W3 Consortium </li></ul>
  37. 56. TEST <ul><li>Find directories that related to your profession </li></ul>
  38. 58. Blog
  39. 63. Blog <ul><li>http://www.tehnorati.com </li></ul><ul><li>http://www.bloglines.com </li></ul><ul><li>http://www.blogger.com </li></ul><ul><li>http://blog.iht.com </li></ul><ul><li>http://www.jeffooi.com </li></ul>
  40. 64. Mailing List/Groups Info Exchange
  41. 67. Multimedia
  42. 68. Web 2.0 <ul><li>Encyclopedia </li></ul><ul><li>http://www.wikipedia.org </li></ul><ul><li>Photo </li></ul><ul><li>http://www.flickr.com </li></ul><ul><li>RSS </li></ul><ul><li>http://www.feedstar.com </li></ul>
  43. 69. TV <ul><li>Power Point Slide show Online </li></ul><ul><li>http://www.slide.com </li></ul><ul><li>Online TV </li></ul><ul><li>http://wwitv.com </li></ul><ul><li>http://twit.tv </li></ul><ul><li>http://websearch.about.com/od/imagesearch/a/freeonlineTV.htm </li></ul>
  44. 70. Magazine & Newsletter
  45. 73. Podcast Sound
  46. 75. Podcast <ul><li>Podcasting is a term coined in 2004 when the use of RSS syndication technologies became popular for distributing audio content for listening on mobile devices and personal computer </li></ul>
  47. 76. RSS News Aggregator
  48. 78. Mailing List Connect
  49. 80. Pictorial Explanation
  50. 81. Web Based Mailing List <ul><li>Google Groups </li></ul><ul><li>Yahoo Groups </li></ul><ul><li>MSN Groups </li></ul><ul><li>LIST : SIPI, Dale Carnegie , TRDEV </li></ul>
  51. 82. Benefits <ul><li>Ask questions </li></ul><ul><li>Sense of belonging </li></ul><ul><li>International exposure </li></ul><ul><li>Contribution </li></ul><ul><li>Networking </li></ul>
  52. 83. Dangers <ul><li>Lurk first </li></ul><ul><li>Beware of the audience </li></ul><ul><li>Jokes </li></ul><ul><li>Use emoticon </li></ul>
  53. 84. Information Evaluation
  54. 85. Web Evaluation Techniques Before you click to view the page... <ul><li>Look at the URL - personal page or site ? ~ or % or users or members </li></ul><ul><li>Domain name appropriate for the content ? edu, com, org, net, gov, ca.us, uk, etc. </li></ul><ul><li>Published by an entity that makes sense ? </li></ul><ul><ul><ul><li>News from its source? </li></ul></ul></ul><ul><ul><ul><ul><ul><li>www. nytimes .com </li></ul></ul></ul></ul></ul><ul><ul><ul><li>Advice from valid agency? </li></ul></ul></ul><ul><ul><ul><ul><ul><li>www. nih .gov/ </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>www.nlm. nih .gov/ </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>www.nimh. nih .gov/ </li></ul></ul></ul></ul></ul>
  55. 86. Web Evaluation Techniques Scan the perimeter of the page <ul><li>Can you tell who wrote it ? </li></ul><ul><ul><ul><li>name of page author </li></ul></ul></ul><ul><ul><ul><li>organization, institution, agency you recognize </li></ul></ul></ul><ul><ul><ul><li>e-mail contact by itself not enough </li></ul></ul></ul><ul><li>Credentials for the subject matter ? </li></ul><ul><ul><li>Look for links to: </li></ul></ul><ul><ul><li>“ About us” “Philosophy” “Background” “Biography” </li></ul></ul><ul><li>Is it recent or current enough ? </li></ul><ul><ul><ul><li>Look for “last updated” date - usually at bottom </li></ul></ul></ul><ul><li>If no links or other clues... </li></ul><ul><ul><ul><li>truncate back the URL </li></ul></ul></ul><ul><ul><li>http://hs.houstonisd.org/hspva/academic/Science/Thinkquest/gail/text/ethics.html </li></ul></ul>
  56. 87. Web Evaluation Techniques Indicators of quality <ul><li>Sources documented </li></ul><ul><ul><ul><li>links, footnotes, etc. </li></ul></ul></ul><ul><ul><ul><ul><li>As detailed as you expect in print publications ? </li></ul></ul></ul></ul><ul><ul><ul><li>do the links work ? </li></ul></ul></ul><ul><li>Information retyped or forged </li></ul><ul><ul><ul><li>why not a link to published version instead ? </li></ul></ul></ul><ul><li>Links to other resources </li></ul><ul><ul><ul><li>biased, slanted ? </li></ul></ul></ul>
  57. 88. Web Evaluation Techniques What Do Others Say ? <ul><li>Search the URL in alexa.com </li></ul><ul><ul><li>Who links to the site? Who owns the domain? </li></ul></ul><ul><ul><li>Type or paste the URL into the basic search box </li></ul></ul><ul><ul><li>Traffic for top 100,000 sites </li></ul></ul><ul><li>See what links are in Google’s Similar pages </li></ul><ul><li>Look up the page author in Google </li></ul>
  58. 89. Web Evaluation Techniques STEP BACK & ASK: Does it all add up ? <ul><li>Why was the page put on the Web ? </li></ul><ul><ul><ul><li>inform with facts and data? </li></ul></ul></ul><ul><ul><ul><li>explain, persuade? </li></ul></ul></ul><ul><ul><ul><li>sell, entice? </li></ul></ul></ul><ul><ul><ul><li>share, disclose? </li></ul></ul></ul><ul><ul><ul><li>as a parody or satire? </li></ul></ul></ul><ul><li>Is it appropriate for your purpose? </li></ul>
  59. 90. Try evaluating some sites... <ul><li>Search a controversial topic in Google : </li></ul><ul><ul><li>&quot;nuclear armageddon&quot; </li></ul></ul><ul><ul><li>prions danger </li></ul></ul><ul><ul><li>“ stem cells” abortion </li></ul></ul><ul><li>Scan the first two pages of results </li></ul><ul><li>Visit one or two sites </li></ul><ul><ul><li>try to evaluate their quality and reliability </li></ul></ul>
  60. 91. Internet Politics
  61. 92. Internet Politics <ul><li>Virus </li></ul><ul><li>Freedom of speech Porno graphy </li></ul><ul><li>Company policies </li></ul><ul><li>Copy right </li></ul>
  62. 93. Internet Politics <ul><li>Virus </li></ul><ul><li>data loss due to viruses is still less than 10% </li></ul><ul><li>2 hours to clear up, a major infection will probably </li></ul><ul><li>take 5 days </li></ul>What is the consequences?
  63. 94. Internet Politics <ul><li>Virus </li></ul>One of the first major attacks in the United States occurred in 1988 with a virus created by a Cornell University graduate student. It jammed more than 6,000 computers across the country, shutting down some networks on what was then a much smaller national computer network.
  64. 95. Internet Politics <ul><li>Antivirus Rules For The Users </li></ul>1 . Never accept disks , programs or data files without checking them first 2. Never use software , demo's or other software with doubtful origins 3 . Always scan any program or document download onto your machine before you open or read it, this includes attachments received via e-mail 4. If you lend a disk to anyone, check it when you get it back. BEFORE you use it again 5. Keep your Antivirus software up to date
  65. 96. Internet Politics <ul><li>Freedom of speech </li></ul><ul><li>Abide to non-disclosure agreement. </li></ul><ul><li>In discussion group, lurk before you participant. </li></ul><ul><li>Do not use four letter words </li></ul><ul><li>Use emoticon for international communication </li></ul>
  66. 97. Internet Politics <ul><li>Pornography </li></ul><ul><li>It’s a big NO NO </li></ul><ul><li>Why it is not allowed? </li></ul><ul><li>If allowed, what would be the negative consequences? </li></ul><ul><li>If accidental, leave straight immediately </li></ul>
  67. 98. Internet Politics <ul><li>Company policies </li></ul><ul><li>Internet Users Policy </li></ul><ul><li>(IUP) </li></ul><ul><li>Previous experience </li></ul>
  68. 99. Internet Politics <ul><li>Copy right </li></ul><ul><li>Three types of software: </li></ul><ul><ul><li>public domain, freeware and shareware </li></ul></ul><ul><li>Give credit to authors </li></ul><ul><ul><li>electronics, verbal or written forms </li></ul></ul><ul><li>Check virus </li></ul><ul><li>Consult IT or HR if not clear </li></ul>

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