1 / 25

Searching the Internet

Searching the Internet. MMTK Project Unit developed by Anna Feldman, for the Association for Progressive Communications. Overview. This unit aims to enable you to: Understand more about the Internet as an environment for finding information.

ember
Download Presentation

Searching the Internet

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Searching the Internet MMTK Project Unit developed by Anna Feldman, for the Association for Progressive Communications

  2. Overview This unit aims to enable you to: • Understand more about the Internet as an environment for finding information. • Explore the strengths and weaknesses of different search tools: how to pick the right one(s) for the job. • Learn to use the tools appropriately: how to re-phrase your questions in a search tool-shaped way. • Evaluate the information that search tools provide: how to efficiently cream off the most relevant results. • Develop a strategy for building up your own well-structured bank of links for future reference: how to bypass the search tools altogether.

  3. Internet as Information Environment • Lack of statistics on the amount of information on the Internet • No standard indexing system • No “direct” searching of other computers - access to search tools only • Search tools search through limited lists of sites • Information on the Internet is driven by machines, created by people

  4. Search Tools • Search Engines • Meta-search Engines • Subject Directories • Information Gateways • Specialist Databases

  5. Search Engines • Compiled by spiders (computer-robot programs), mechanically building database of references • Matches searched-for keywords with words in full text of selected web pages • Number of pages searched can vary from small number to 90% of the web • Good results are as much about understanding search syntax as the scope of the engine’s coverage Good For: Precision searches, using named people or organisations, searching quickly and widely, topics which are hard to classify Not Good For: Browsing through a subject area

  6. Major Search Engines • Googlehttp://www.google.com/ • AltaVistahttp://www.altavista.com/ • allthewebhttp://www.alltheweb.com/

  7. Meta-search Engines • Skim-search several search engines at once • Usually reach about 10% of results of each engine they visit • Cannot perform advanced-style searches which use engine-specific syntax Good For: quick search engine results overview, doing simple searches with 1 or 2 keywords Not Good For: comprehensive results from a complex search

  8. Major Meta-search Engines • SurfWaxhttp://www.surfwax.com/ • Ixquickhttp://www.ixquick.com/

  9. Information Gateways • Information gateway-type resources include Internet catalogues, subject directories, virtual libraries and gateways • Specialising in resources on a particular field • Usually searchable AND • Organised into hierarchical subject categories • Compiled by people, not robots • More focus on sifting for relevance and quality Good For: topics that fall into a thematic area that has a subject directory, guided browsing in your subject area Not Good For: Quickly finding information from widely varying themes

  10. Information Gateway Examples • ELDIS: the Gateway to Development Informationhttp://www.eldis.org/ • Development Gatewayhttp://www.developmentgateway.org/ • World Wide Web Virtual Libraryhttp://www.vlib.org/ • SOSIG (Social Science Information Gateway)http://www.sosig.ac.uk/

  11. Specialised Databases • Also known as the “invisible web” - pages of content not reached by robots • Statistics, schedules, maps, figures • Dynamically generated content, powered into pages on demand • Searchable • Entry pages can be found using other search tools Good For: Gathering specific kinds of data Not Good For: Browsing through a subject area

  12. Exercise Use just one search tool for each of the following queries to start building up a picture of which tools work for which queries

  13. Using the Tools Appropriately 7 Stage Search Strategy: 1. Unpack your query 2. Phrase your query 3. Categorise your query 4. Match a tool to your query 5. Seek advice from a relevant person 6. Try again! 7. Evaluate your results

  14. Stage 1. Unpacking the Query • Ask questions to make the query clearer • Put the query into a single sentence • Break it up into concepts • Think of alternative terms for each of your concepts

  15. Exercise • Take a search query from the collection that was made at the beginning of the session. Do not take one that you wrote yourself • Adapt the query by asking questions, if it needs more specificity • Use the table in your worksheets to break it down into concepts

  16. Stage 2. Phrase your Query The basic principles of Search Syntax are the same for most search engines, but details can vary - always check your engine’s search tips page to be sure. • Narrowing parameters: “” , +, - “Columbian coffee pickers” +coffee +pickers +price +Columbia +coffee -cup -cotton • Complex Boolean searches OR, AND or +, NOT, “….” • Wild Cards educ*

  17. Stage 3. Categorise your Query Does your query: • Include clearly distinctive words or phrases? • Include common terms that tend to get many inappropriate results? • Look for broad overviews of a subject area? • Look for a narrowly focused part of a broader area?

  18. Stage 4. Match the Right Tool to the Query • Try and match the right tool to the type of search query you are working on. • Think about the way that the tool will work on your query and re-phrase the query to get the most out of the tools. • Try a variety of tools - use general tools to find subject-specific ones.

  19. Stage 5. Seek Advice Tools don’t have brains - people do! • No successful results from the tools online? • Look for an “off-ramp” to take you to a person offline: • an email link to a relevant expert, resource person, or page author • telephone number • postal addresses • Send your query to a relevant discussion list

  20. Stage 6. Try Again! • Go back to the beginning • Retrace your steps • Look for turnings you may have missed • Re-phrase your query • Re-think your query • Check your search syntax

  21. Exercise Using the last 5 stages of the search strategy, repeat the search query you did earlier

  22. Stage 7. Evaluating the Results Think before you click! • The Internet lacks the quality control mechanisms that exist in the print media • Look for “relevance” clues in the URLs of your search results, before you click. • Check the domain types .gov, .edu, .org • Check the publishing source • self published by an individual? • reputable source? • relevant source?

  23. Exercise The following URLs are Google results from the query Indonesia “human rights”. Try making a judgement about what sort of information they link to (without clicking).

  24. Developing your Own Online Resource Base • Learn from your searches: let every search contribute to the next ones. • Use the Bookmarks/Favorites feature of your browser. • Add URLs and annotations to the list. • Use the filing functionality to organise your resources into a logical system. • The list will become an incredibly valuable personalised information gateway - and a fabulous launch-pad.

  25. Searching the Internet MMTK Project Unit developed by Anna Feldman, for the Association for Progressive Communications

More Related