Search Engine Strategies


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  • Search Engine Strategies

    1. 1. Search Engine Strategies The 411 on Searching Effectively
    2. 2. But…. <ul><li>I know all about Google. Why do I need a class in search strategies??? </li></ul>
    3. 3. The Problem: <ul><li>Access to information is not a problem. You have access to information from around the world, and in every language, right at your desk </li></ul><ul><li>. </li></ul><ul><li>The problem comes in finding relevant and useful information. </li></ul>
    4. 4. The Answer: <ul><li>Wise searching saves you time and effort. Knowing how to use search engines is an essential 21 st century skill. </li></ul>
    5. 5. THE Standard: Google <ul><li>The whole world has become </li></ul><ul><li>‘ Google-ized’ </li></ul><ul><li>Search engine of choice for many </li></ul><ul><li>Pros: Wide range of responses, sites from all over the world </li></ul><ul><li>Cons: Too many responses, not enough focus </li></ul>
    6. 6. You’re Kidding!!! <ul><li>Not at all. Although Google may be larger and more comprehensive than others, it isn’t always the best choice. </li></ul><ul><li>The size and number of ‘hits’ </li></ul><ul><li>sometimes makes it </li></ul><ul><li>difficult to use effectively. </li></ul>
    7. 7. Google Search: 53,600,000 hits
    8. 8. So what’s beyond Google? <ul><li>Dogpile: </li></ul><ul><li>Chacha: </li></ul><ul><li> </li></ul><ul><li>Clusty: </li></ul><ul><li>Surfwax: </li></ul><ul><li>And hundreds more… </li></ul>
    9. 9. Choose the right search engine for your information need! <ul><li>Choosing the Best Search Tool </li></ul>
    10. 10. Search Interface Choices <ul><li>Simple vs. </li></ul><ul><li>Advanced </li></ul>
    11. 11. Simple Screen Click here for more precision and power!
    12. 12. Advanced Screen
    13. 13. Advanced screen in a database
    14. 14. Another decision: <ul><li>Subject / Topic </li></ul>Keyword Full text What’s the difference?
    15. 15. Subject Directories <ul><li>If you need a lot of information on a rather broad topic, your best bet is not a search engine, but a Web directory like the Open Directory Project ,  Google Directory or  Yahoo.   </li></ul><ul><li>  A directory is a subject-tree style catalogue that organizes the Web into major topics such as Computers and Internet, Education, Government, Health, News, Reference etc. </li></ul><ul><li>  Under each of these topics is a list of subtopics, and under each of those is another list, and another, and so on, moving from the more general to the more specific. </li></ul>
    16. 16. Subject Directories <ul><li>Google Directory </li></ul><ul><li>Librarian’s Index to the Internet </li></ul><ul><li>DMOZ (Open Directory Project) </li></ul><ul><li>High School Hub </li></ul><ul><li> </li></ul><ul><li>CyberDewey </li></ul><ul><li>Awesome Library </li></ul><ul><li>St. Ambrose University Library </li></ul>
    17. 17. Subject Specific Directories <ul><li>OJOSE (science journals) </li></ul><ul><li>SOSIG (social sciences) (a U.K. Site) </li></ul><ul><li>Biography Center </li></ul><ul><li>PSIGate (physical sciences) </li></ul><ul><li>GESource (geography gateway) </li></ul><ul><li>National Science Digital Library </li></ul><ul><li>Time Magazine Archive </li></ul>
    18. 18. Keyword Search <ul><li>A keyword can simply be any word on a Web page.  Keywords would actually tell a user something about the subject and content of the Web page. </li></ul><ul><li>Search engines cannot return hits on keywords that mean the same, but are not actually entered in your query . A query on heart disease would not return a document that used the word &quot;cardiac&quot; instead of &quot;heart.&quot; </li></ul>
    19. 19. Full Text Indexing <ul><li>Full-text indexing systems generally pick up every word in the text except commonly occurring stop words such as &quot;a,&quot; &quot;an,&quot; &quot;the,&quot; &quot;is,&quot; &quot;and,&quot; &quot;or,&quot; and &quot;www.&quot;  Some of the search engines discriminate upper case from lower case; others store all words without reference to capitalization. </li></ul>
    20. 20. Stop Words <ul><li>To be or not to be .  Some search engines choke because all the words in the phrase are stop words -- i.e., unimportant words too short and too common to be considered relevant strings on which to search. </li></ul><ul><li>  </li></ul><ul><li>However, if you enclose the query in quotation marks, forcing the search engine to find the words, &quot;to be or not to be&quot; in that precise order, most search engines can  recognize the phrase as a famous quotation from Hamlet . </li></ul>
    21. 21. “ Phrase searching” <ul><li>One of your best searching tools! </li></ul><ul><li>Use only for legitimate phrases, names, titles </li></ul><ul><ul><ul><li>Best example -- “vitamin A” </li></ul></ul></ul><ul><ul><ul><li>“ John Quincy Adams” </li></ul></ul></ul><ul><ul><ul><li>Titles “An Officer and a Gentleman” </li></ul></ul></ul><ul><ul><ul><li>“ to be or not to be” </li></ul></ul></ul><ul><li>Phrase searching is sometimes overused: not every group of words is a phrase </li></ul><ul><li>Sometimes “ANDing” is a better strategy </li></ul>
    22. 22. How to structure a good query <ul><li>Brainstorm several key words and phrases — the ones you think would appear and wouldn’t appear in your dream document </li></ul><ul><li>Anticipate synonyms and related words </li></ul><ul><li>Mine your results!: be on the look out for better words and phrases as you search </li></ul>
    23. 23. More on the Query <ul><li>Focus on nouns (verbs are often vague, stop words, like articles—a, an, the—are ignored by most engines) </li></ul><ul><li>Include most important words and phrases first. </li></ul>
    24. 24. Wildcards and Stemming <ul><li>Google stems, it returns varied forms of words </li></ul><ul><li>Many databases do not stem. </li></ul><ul><li>Use an asterisk for various word forms </li></ul><ul><li>adolesc* child* teen* </li></ul><ul><li>BE CAREFUL when you stem : cat* </li></ul>
    25. 25. The Boolean Machine <ul><li> </li></ul>Not And Or
    26. 26. Boolean Operator: AND <ul><li>Person or term must satisfy both/all attributes </li></ul><ul><li>Examples: </li></ul><ul><ul><li>Public AND Faculty: only faculty </li></ul></ul><ul><ul><li>Public AND Students: only students </li></ul></ul><ul><ul><li>Public AND Faculty AND Students: faculty who are also students </li></ul></ul>
    27. 27. Boolean Operator: NOT <ul><li>Person or term must NOT satisfy the attributes </li></ul><ul><li>Examples: </li></ul><ul><ul><li>Public NOT Employee: anyone who is NOT an employee </li></ul></ul><ul><ul><li>Public AND Employee NOT Faculty: any employee that is NOT a faculty member </li></ul></ul>
    28. 28. NOT as a refinement technique for problem words eagles NOT Philadelphia “Martin Luther” NOT King
    29. 29. Boolean Operator: OR <ul><li>Person or term only needs to satisfy one of the attributes listed </li></ul><ul><li>Examples: </li></ul><ul><ul><li>Public AND Faculty OR employee: anyone who is a faculty member or an employee </li></ul></ul>
    30. 30. When do you really need OR? OR is generally used for synonyms or related words .
    31. 31. Search / filter by media type Searching by media type and using phrases phrase searching
    32. 32. More like this, related sites . . .
    33. 33. Don’t forget the tabs across the top of the page!
    34. 34. Homework <ul><li>Searching for Success Blog: </li></ul><ul><li>Searching for Success Hotlist: </li></ul>
    35. 35. Can you find out what these are? <ul><li>Facebook </li></ul><ul><li>My Space </li></ul><ul><li>Loopt </li></ul><ul><li>Twitter </li></ul><ul><li>Jaiku </li></ul><ul><li>Whereaboutz </li></ul><ul><li>Rummble </li></ul>
    36. 36. Or these? <ul><li>Find Me </li></ul><ul><li>Buddy Finder </li></ul><ul><li>Zimbra </li></ul><ul><li>Thwirl </li></ul><ul><li>Seesmic </li></ul><ul><li>Nanoblogs </li></ul><ul><li>Gabcast </li></ul><ul><li>Filamentality Hotlist </li></ul>
    37. 37. Need Help ? <ul><li>Judith Sotir, AELC Manager </li></ul><ul><li>WCC Aurora Campus, Room 312 </li></ul><ul><li>630-801-7900 x 4128 </li></ul><ul><li>[email_address] </li></ul>
    38. 38. Better Search Options
    39. 39. Social Search Engines <ul><li>A social search engine is a type of search engine that determines the relevance of search results by considering the interactions or contributions of users. Example forms of user input include social bookmarking or direct interaction with the search results such as promoting or demoting results the user feels are more or less relevant to their query. (source: Wikipedia) </li></ul>
    40. 40. Wink Social Search Engine <ul><li>Wink is a community-based social search engine. It provides across social networks, and Web search based on user input. Wink is different from conventional search engines in that the relevant results are derived not just from machine algorithms, but directly from user input, such as social bookmarking , voting up or down, or blocking results that are considered to be spam, thus allowing users to collectively create their own search engine. </li></ul><ul><li> </li></ul>
    41. 41. Cha Cha Search Engine <ul><li>‘ People powered’ search engine </li></ul><ul><li>Receive top results combining the Web's leading search engines and human intelligence made possible by a vast community of skilled search experts </li></ul><ul><li>Need more help finding what you're looking for? Click the ' Search with Guide ' button to chat with a search expert </li></ul>
    42. 42. Cha Cha Search
    43. 43. Cha Cha Live Guide
    44. 44. Meta-search Aggregators <ul><li>Dogpile </li></ul><ul><li>Searches Google, Yahoo, LookSmart, AskJeeves/Teoma, Google ADS, MSN search. Sites that have purchased ranking and inclusion are blended in. Accepts Boolean logic, especially in advanced search modes. </li></ul><ul><li>Dogpile allows you to see each search engine's results separately in a useful list for comparison . </li></ul>
    45. 45. Search Aggregator <ul><li>A search aggregator is a type of metasearch engine which gathers results from multiple search engines simultaneously through RSS search results. </li></ul><ul><li>Search aggregators are an increasingly popular way to take advantage of the power of multiple search engines with a flexibility not seen in traditional metasearch engines . (source: Wikipedia) </li></ul>
    46. 46. Dogpile Search Engine
    47. 47.
    48. 48. Meta Search <ul><li>In a meta-search engine, you submit keywords in its search box, and it transmits your search simultaneously to several individual search engines and their databases of web pages. Within a few seconds, you get back results from all the search engines queried. </li></ul><ul><li> </li></ul>
    49. 49. Some search engines also offer subject / topic cues or clusters Check out this Clusty search…
    50. 50. Clusty Search Engine <ul><li> Currently searches a number of free, search engines and directories, not Google or Yahoo. </li></ul><ul><li>Accepts and &quot;translates&quot; complex searches with Boolean operators and field limiting. Results accompanied with subject subdivisions based on words in search results, giving usually the major themes. Click on these to search within results on each theme. </li></ul>
    51. 51. You can open these categories!
    52. 52. Search engine clusters help you find relevant documents and suggest search terms
    53. 53. Meta-search Engine Meta = about <ul><li>A meta-search engine is a search engine that sends user requests to several other search engines and/or databases and aggregates the results into a single list or displays them according to their source. Metasearch engines enable users to enter search criteria once and access several search engines simultaneously. </li></ul><ul><li>Essentially, a search engine for search engines ( source: Wikipedia ) </li></ul>
    54. 54. Meta-Search Engines for SERIOUS Deep Digging: Surfwax Metasearch Engine <ul><li> </li></ul><ul><li>A better than average set of search engines. Can mix with educational, US Govt tools, and news sources, or many other categories. Accepts &quot; &quot;, +/- . Default is AND between words. I recommend fairly simple searches, allowing SurfWax's SiteSnaps and other features to help you dig deeply into results. Click on source link to view complete search results there. Click on to view helpful &quot;SiteSnap™&quot; extracted from most sites in frame on right. </li></ul>
    55. 55. Surfwax Metasearch Engine
    56. 56. Surfwax Metasearch Engine
    57. 57. Meta Search Engines <ul><li>Clusty </li></ul><ul><li>A9: e commerce search </li></ul><ul><li>Ixquick Metasearch </li></ul><ul><li>Mamma </li></ul><ul><li>Proteus search aggregator </li></ul><ul><li>Dogpile search aggregator </li></ul><ul><li>Surfwax </li></ul>
    58. 58. Blog Search Engines <ul><li>Several blog search engines are used to search blog contents (also known as the blogosphere ), such as Bloglines , BlogScope , and Technorati . Technorati, which is among the most popular blog search engines, provides current information on both popular searches and tags used to categorize blog postings. Research community is working on going beyond simple keyword search, by inventing news ways to navigate through huge amounts of information present in the blogosphere , as demonstrated by projects like BlogScope </li></ul>
    59. 59. Technorati: Blog Search Engine
    60. 60. Technorati
    61. 61. Technorati Features <ul><li>Allows searches for ‘any authority’ through ‘a lot of authority’ </li></ul><ul><li>Provides news from general news services and blogs </li></ul><ul><li>Searches weblogs ‘tags’ and ‘keywords’ for links </li></ul>
    62. 62. Watch Out for: Sponsored Links
    63. 63. Watch Out For: Cookies <ul><li>A cookie is a small text file placed on your computer when you visit a website.  Not every website uses cookies, but you can expect to receive a cookie if you visit most of the popular websites on the internet, especially ones with advertising.  </li></ul><ul><li>If you return to a website which previously gave you a cookie, that cookie is transmitted back to the website so that site operator knows you are visiting again. </li></ul>
    64. 64. Cookie Dough <ul><li>Many sites such as portals and news providers such as allow users to set preferences, for example selecting which categories of news they would like to appear on their homepage.  These preferences are 'remembered' by means of a cookie. </li></ul><ul><li>Cookies are used to remember log-in names and passwords, so that users do not need to re-register every time they visit a site.  </li></ul><ul><li>Many shopping sites such as allow users to create a &quot;shopping cart&quot; of items they wish to purchase.  The computer remembers your purchase list by means of a cookie placed on your computer. </li></ul>
    65. 65. Wikipedia and Citizendium <ul><li>For several years now, the online encyclopedia Wikipedia ( ) has been drawing us into an interactive format for providing information. Citizendium is the new kid on the block. </li></ul><ul><li>To be fair, Wikipedia itself has evolved but there are inherent 'flaws', not the least being the relative anonymity of its authors. Citizendium takes on those flaws and ups the ante. </li></ul><ul><li>I see Wikipedia as more the free-spirited, few rules hippie-type, and Citizendium being its more matured boomer type brother. Viva revolution! Check it out: </li></ul>
    66. 66. Additional Search Engines <ul><li>Google Scholar = </li></ul><ul><li>Ice Rocket Blog Search </li></ul><ul><li>Yahoo!Search </li></ul><ul><li>Killer Info </li></ul><ul><li>AltaVista (Advanced) </li></ul><ul><li>All the Web (Advanced) </li></ul><ul><li>Rocket News (for breaking news) </li></ul>
    67. 67. And finally, as you search, consider . . . <ul><li>What types of sources does your instructor want you to cite: </li></ul><ul><li>Primary sources? </li></ul><ul><li>Scholarly sources? </li></ul><ul><li>Popular sources? </li></ul><ul><li>Trade journals? </li></ul>