Mining of Web Resources By Dr. S. Srinivasaragavan & Mr. M. Surulinathi Department of Library & Information Science

What is Mining? Mining, the extraction of information from large databases, is a powerful new technology with great potential to help professionals focus on the most important information in their data warehouses.Mining, the extraction of information from large databases, is a powerful new technology with great potential to help professionals focus on the most important information in their data warehouses.

What is a search strategy? Planning how to look for information. A well designed search strategy: A well designed search strategy: Saves time Saves time Allows search in many different databases Allows search in many different databases Helps find relevant information Helps find relevant information

Basic Search Strategy: The Ten Steps Following the steps will also ensure good results if your search is multifaceted and you want to get the most relevant results. Identify the important concepts of your search.Identify the important concepts of your search. Choose the keywords that describe these concepts.Choose the keywords that describe these concepts. Determine whether there are synonyms, related terms, or other variations of the keywords that should be included.Determine whether there are synonyms, related terms, or other variations of the keywords that should be included. Determine which search features may apply, including truncation, proximity operators, Boolean operators, and so forth..Determine which search features may apply, including truncation, proximity operators, Boolean operators, and so forth..

Cont… Choose a search engine/Database.Choose a search engine/Database. Read the search instructions on the search engine's home page. Look for sections entitled "Help," "Advanced Search," "Frequently Asked Questions," and so forth.Read the search instructions on the search engine's home page. Look for sections entitled "Help," "Advanced Search," "Frequently Asked Questions," and so forth. Evaluate the results. How many hits were returned? Were the results relevant to your query?Evaluate the results. How many hits were returned? Were the results relevant to your query?

Search Strategies Boolean OperatorsBoolean Operators TruncationsTruncations Wild CardsWild Cards Domain SearchDomain Search Phrase SearchPhrase Search NEARNEAR ParenthesesParentheses LimitingLimiting Synonym SearchSynonym Search Dictionary Definitions etc.,Dictionary Definitions etc.,

Boolean Operator – AND AND is the small overlap where both terms occurAND is the small overlap where both terms occur Indicates that only those Web pages that have both words in them will be retrieved or will result in Web pages that have either termIndicates that only those Web pages that have both words in them will be retrieved or will result in Web pages that have either termExample: “Global Warming” AND “Sea level rising”

Boolean Operator – OR Boolean Operator – OR OR allows more than one termOR allows more than one term OR requires at least one of the terms joined by it to appear somewhere in the document in any order. Example “Digital Library” or “Electronic Library”

Boolean Operator – NOT Excludes documents containing whatever follows it.Excludes documents containing whatever follows it.Example: Global Warming NOT Srilanka Global Warming NOT Srilanka Animals NOT Dogs Animals NOT Dogs

Phrase Search/Quotation Search Requires words to searched as phrase, in the exact order you type them.Requires words to searched as phrase, in the exact order you type them.Example: “Digital Library” “Digital Library” “Global Warming” “Global Warming”

NEAR Near operator is used when we want to require that certain terms appear in the same sentence or paragraph of the documents.Near operator is used when we want to require that certain terms appear in the same sentence or paragraph of the documents. Requires the two phrases to occur within 16 words of each other in either direction.Requires the two phrases to occur within 16 words of each other in either direction.Example: “Global Warming” NEAR “sea level rise” “Global Warming” NEAR “sea level rise”

Parentheses ( ) Parentheses also must be used with NEARParentheses also must be used with NEARExample: (“Global Warming” NEAR “Sea level rise”) AND (California OR “Pacific coast”)

Domain Search To search only within one specific website by entering the search terms you're looking for, followed by the word "site" and a colon followed by the domain name.To search only within one specific website by entering the search terms you're looking for, followed by the word "site" and a colon followed by the domain name. For example, here's how you'd find admission information on bdu site:For example, here's how you'd find admission information on bdu site: Admission Site: Admission Site:

Truncation Searching Truncation allows the computer to search for multiple forms of a word.Truncation allows the computer to search for multiple forms of a word. EXAMPLE:EXAMPLE: music* will retrieve as: music* will retrieve as: musical, musician, musicians, musicality, music's musical, musician, musicians, musicality, music's bank* will retrieve as :bank* will retrieve as : bank or banks or banking or banker or bankruptcy, etc. bank or banks or banking or banker or bankruptcy, etc. Librar* will retrieve as: Librar* will retrieve as: Library, Librarian, Libraries, Librarianship, Librarians Library, Librarian, Libraries, Librarianship, Librarians

Wild Cards Some databases allow for wild cards to be embedded within a word to replace a single character. For instance, in InfoTrac, you can also use the question mark (?) within a word to replace a character.Some databases allow for wild cards to be embedded within a word to replace a single character. For instance, in InfoTrac, you can also use the question mark (?) within a word to replace a character. For example: wom?n will retrieve woman or women wom?n will retrieve woman or women

Limiting Limiting by Date, Language, fileformate etc.,Limiting by Date, Language, fileformate etc., Digital Library + PDF Semantic Web + PPT Web Technology + html

Synonym Search If you want to search not only for your search term but also for its synonyms, place the tilde sign (~) immediately in front of your search term.If you want to search not only for your search term but also for its synonyms, place the tilde sign (~) immediately in front of your search term.Example: ~ Fast Food ~ Fast Food

Dictionary Definitions To see a definition for a word or phrase, simply type the word "define" then a space, then the word(s) you want defined. To see a list of different definitions from various online sources.To see a definition for a word or phrase, simply type the word "define" then a space, then the word(s) you want defined. To see a list of different definitions from various online sources. Example:Example: Define: Virtual Library Define: Virtual Library

Free Web Resources on Internet E-JournalsE-Journals E-BooksE-Books Electronic Theses and DissertationsElectronic Theses and Dissertations Bibliographic DatabasesBibliographic Databases Scholarly PublicationsScholarly Publications Video sharing Web Sites etc.,Video sharing Web Sites etc.,

E-Books Guttenberg O'Reilly's CD bookshelf - CD bookshelf Google Childrens Books - Books DLI

Electronic theses and Dissertations Scirus ETD – etd-searchScirus ETD – etd-search etd-search etd-search Open Thesis - Thesis - Australian digital Thesis - digital Thesis Vidyanidhi INFLIBNET – indcat.inflibnet.ac.in/indcat/thesis.jspINFLIBNET – indcat.inflibnet.ac.in/indcat/thesis.jsp Indian Institute of Science – Institute of Science –

E-Journals Indian Academy of Sciences - Academy of Sciences NISCAIR Journals - on/ResearchJournals/rejour/rejour1.htmNISCAIR Journals - on/ResearchJournals/rejour/rejour1.htm on/ResearchJournals/rejour/rejour1.htm on/ResearchJournals/rejour/rejour1.htm DOAJ Stanford University Journals - University Journals Free Medical Journals - Medical Journals InfolibrarianInfolibrarian

Scholarly Publications Indian Academy of Sciences - Academy of Sciences NISCAIR Journals - n/ResearchJournals/rejour/rejour1.htmNISCAIR Journals - n/ResearchJournals/rejour/rejour1.htm n/ResearchJournals/rejour/rejour1.htm n/ResearchJournals/rejour/rejour1.htm DOAJ Stanford University Journals - University Journals Free Medical Journals - Medical Journals

Bibliographic Databases PubmedPubmed LISTALISTA

Subscribed Web Resources E-booksE-books E-JournalsE-Journals Bibliographic DatabasesBibliographic Databases Numeric DatabasesNumeric Databases Aggregators Databases (EBSCO)Aggregators Databases (EBSCO) ProtocolsProtocols Patents and StandardsPatents and Standards

E-Books E-libraryE-library SpringerSpringer Elsevier ScienceElsevier Science EngNetBaseEngNetBase Oxford University PressOxford University Press Sage etc.,Sage etc.,

E-Journals SpringerSpringer EmeraldEmerald Elsevier ScienceElsevier Science ACSACS Wiley PublicationsWiley Publications JSTORJSTOR Blackwell etc.,Blackwell etc.,

Bibliographic Databases Web of ScienceWeb of Science ScopusScopus INSPEC and COMPEDEXINSPEC and COMPEDEX MathscinetMathscinet Biosis andBiosis and Scifinder Scholar etc.,Scifinder Scholar etc.,

UGC-INFONET Digital Library Consortium Resources at BDU Library American Chemical Society January 2009 to December 2009 American Institute of Physics January 2009 to December 2009 American Physical Society January 2009 to December 2009 Annual Reviews April 2007 to March 2008American Chemical Society January 2009 to December 2009 American Institute of Physics January 2009 to December 2009 American Physical Society January 2009 to December 2009 Annual Reviews April 2007 to March 2008American Chemical Society American Institute of Physics American Physical Society Annual Reviews American Chemical Society American Institute of Physics American Physical Society Annual Reviews Biological Abstract July 2007 to June 2008 Blackwell Publishing April 2008 to March 2009Biological Abstract July 2007 to June 2008 Blackwell Publishing April 2008 to March 2009Biological Abstract Blackwell Publishing Biological Abstract Blackwell Publishing

Cambridge University Press January 2009 to December 2009 Institute of Physics January 2009 to December 2009 ISID April 2008 to march 2009 JCCC January 2009 to December 2009 Oxford University Press April 2008 to march 2009 Project Muse January 2009 to December 2009 Royal Society of Chemistry January 2009 to December 2009 SIAM January 2008 to December 2008 Springer Link January 2009 to December 2009 Taylor & Francis January 2009 to December 2009Cambridge University Press January 2009 to December 2009 Institute of Physics January 2009 to December 2009 ISID April 2008 to march 2009 JCCC January 2009 to December 2009 Oxford University Press April 2008 to march 2009 Project Muse January 2009 to December 2009 Royal Society of Chemistry January 2009 to December 2009 SIAM January 2008 to December 2008 Springer Link January 2009 to December 2009 Taylor & Francis January 2009 to December 2009Cambridge University Press Institute of Physics ISID JCCC Oxford University Press Project Muse Royal Society of Chemistry SIAM Springer Link Taylor & Francis Cambridge University Press Institute of Physics ISID JCCC Oxford University Press Project Muse Royal Society of Chemistry SIAM Springer Link Taylor & Francis

Sage Publications at BDU China Report Current Sociology Environment and Urbanization Gender, Technology and Development Global Business Review Indian Economic & Social History Review Indian Journal of Gender Studies International Social Work Journal of Entrepreneurship Journal of Health Management Journal of Social Work Science Technology & Society Sociology South Asian Survey South Asia Economic Journal Studies in HistoryChina Report Current Sociology Environment and Urbanization Gender, Technology and Development Global Business Review Indian Economic & Social History Review Indian Journal of Gender Studies International Social Work Journal of Entrepreneurship Journal of Health Management Journal of Social Work Science Technology & Society Sociology South Asian Survey South Asia Economic Journal Studies in HistoryChina Report Current Sociology Environment and Urbanization Gender, Technology and Development Global Business Review Indian Economic & Social History Review Indian Journal of Gender Studies International Social Work Journal of Entrepreneurship Journal of Health Management Journal of Social Work Science Technology & Society Sociology South Asian Survey South Asia Economic Journal Studies in HistoryChina Report Current Sociology Environment and Urbanization Gender, Technology and Development Global Business Review Indian Economic & Social History Review Indian Journal of Gender Studies International Social Work Journal of Entrepreneurship Journal of Health Management Journal of Social Work Science Technology & Society Sociology South Asian Survey South Asia Economic Journal Studies in History

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