WISER Humanities: Quality Information on the Internet Johanneke Sytsema Linguistics Subject Consultant Johanneke.sytsema@ouls.ox.ac.uk Judy Reading Reader Services Judy.reading@ouls.ox.ac.uk Aims of the session • An overview of the types of web search tools • Functionality and Focus of different search tools • Summary of helpful search techniques • Evaluating results • Using gateways Web basics • • • • Organisation Size Scope Invisible web Wikipedia on “The deep web” Invisible or deep web • Subscription content • Private sites (eg registration or log-in protected) • Dynamic content – returned from a query or completed form • Unlinked content • File types which can’t be searched by search engines eg multimedia files. PDF used to be unavailable Primary Search tools • Search engines – – – – General – Google Specific Google Scholar (Oxford full text links) Google Blog Search to search blogs OpenDOAR www.opendoar.org to search repositories • Meta search engines – crawlers • Gateways - Intute • Reference tools - OxLip Search engines • Major players – – – – Google (US and UK versions) Google Scholar (www.scholar.google.com) Yahoo search (www.yahoo.com or co.uk) Ask Jeeves (www.ask.com or co.uk) Search Engines Advantages • Index a large proportion of the public web • Word for word indexing • Easy to use and available Disadvantages • Huge number of hits generated • No quality control • Different advance searching techniques • Public pages only, no databases Google • Worth looking in the Advanced search and Advanced Search Tips to see what Google offers. You can search: • for a particular resource or kind of information such as books, blogs, images or news • Within a particular site or create a customised search engine searching sites you select • Sites which link to a particular site or are similar to a site • The order of search terms matters and you can repeat key words to influence what you retrieve • Normally Google automatically truncates and combines with “and”. • Phrase searching (using quotation marks) very useful for making searches specific • Results are ranked for relevance through a secret formula which includes the popularity of pages Google Scholar • You need the Virtual Private Network set up to gain access to all Oxford subscription full-text if using a home PC or laptop • Make sure you have Oxford selected in your preferences so the links to Oxford holdings works. Google Scholar • Advantages: quick and easy to use, full-text searching, cited by links, huge general resource linked to local holdings as well as full-text if available • Disadvantages: not comprehensive – most recent and oldest material may be missing, doesn’t have the full functionality of subscription bibliographic databases eg can’t mark from a list or save searches to combine sets, no controlled vocabulary • Use Advanced search options and read through the search tips and help offered to make the most of Google Scholar • Getting better all the time – may provide “good enough” quick results but not (yet?) sufficient for a thorough literature search Google Scholar • Use ‘exact phrase’ • Use ‘with at least one of the words’ • Use ‘Exclude the words’ • Set preferences to choose Oxford full text option • Not comprehensive at all • Cannot sort by date Google Scholar 613 hits Link to Oxford Full Text Search techniques (1) Too many results? • Add more concepts • Link terms • Search in a particular field i.e. title • Limit to UK pages • Advanced searching options • Search for exact phrase using “..” • Set preferences Search techniques (2) Too few results? • Broaden search term • Add alternative phrases • Try a meta search engine Are you searching in the right place? Have you tried subscription databases? Meta Search engines (1) A tool that searches across a number of individual search engines retrieving the ‘top’ results from each • Clusty (www.clusty.com) – ranks results according to subject • Metacrawler (www.metacrawler.com) – links to the top 10 hits in other search engines • Dogpile (www.dogpile.com) – no ranking; searches by ‘exact phrase’ Clusty Metacrawler: compare top ten results in Google, Yahoo, Ask Meta-Search engines (2) Advantages • Search across a number of engines using a single interface • Ranking according to subject (Clusty) • Compare top ten results of Google, Yahoo, Ask in Metacrawler • Can save time searching • More of the web searched • Duplicates removed Meta-Search engines (3) Disadvantages • Difficult to limit searches • Search engine coverage: • Metacrawler: Google, Yahoo, Ask • CLusty: Ask, Open Directory, Gigablast and others Directories/indexes/Gateways Lists of web resources grouped together in a structured manner • INTUTE http://www.intute.ac.uk/ subject based web resources for education and research (part of RDN Resource Discovery Network) • British Academy Portal http://www.britac.ac.uk/portal/index.html (humanities and social sciences, academic) • INFOMINE scholarly internet resource collections http://infomine.ucr.edu/ Directories/indexes/gateways Advantages • Created by people who have evaluated the sites • Quality resources • Subject structure allows browsing • Smaller and more manageable than engines Disadvantages • Browsing can return a long list of sites • Difficult to identify which category to search in • Indexed by title rather than word-for-word INTUTE INTUTE • Search Example: archeology/papyrology • ‘Dead Sea scrolls and Qumran’ contains info and is a gateway to other sites • Duke papyrus archive contains information about over 1,300 papyri • Great Isaiah Scroll: images, translation and discussion of the text INTUTE offers RSS feeds You will be automatically updated when new quality sites in your subject area are added to the database Gateways • STELLA: Gateway produced by Glasgow University – English and Scottish language links – /www.arts.gla.ac.uk/SES LL/STELLA/links.htm • Refers to organisations, gateways, text archives • No search • Points to useful resources Evaluating results • • • • • When was it produced? Who is responsible for the information? Why has it been published on the Internet? Where is the page situated? What is the value to you? example • http://home.wanadoo.nl/ mpaginae/ • Aim of this site? • Who made it? • When was it made? • What can be searched? example • • • • www.kb.nl This site in English About us Copyright & colofon Summary For focussed results use • Specific search engines • Meta-search engines • Focus your search strategy For quality results use evaluated resources: • Directories • Gateways • Databases This presentation will be available from the WISER Presentations Archive www.ouls.ox.ac.uk OULS Home > E-resources > Information skills and induction > WISER > WISER Presentations Archive