NJIT CIS 634 Information Retrieval Fall 02

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NJIT CIS 634 Information Retrieval Fall 02

• Instructor Y. F. Brook Wu, Ph.D.
• Material
• Van Rijsbergen Ch1
• "What do people want from IR" by Bruce Croft

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Contact the Instructor

• In person GITC 5502, 12-1pm, Monday 5-545pm,
  Friday.
• By phone [phone]
• By e-mail (fastest way to get my attention)
  wu_at_njit.edu Please include CIS 634 in the
  subject of your e-mail.

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Web Board for CIS 634

• Instructions of getting a web board account
  http//webboard.njit.edu/
• Class web board http//webboard.njit.edu8080/F2
  002CIS634-101,CIS392-101/ . Please check
  announcements and new messages at least three
  times a week and contribute as much as you can.
• When posting on web board, respect others and be
  considerate. 

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Class Web Site

• CIS 634 web site
• http//web.njit.edu/wu/teaching/fa02/cis634fall02
  .htm

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www.turnitin.com
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www.turnitin.com
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Exit Requirements

• You should be familiar with the followings
• Search strategies
• Text analysis
• Retrieval models
• Retrieval effectiveness measures
• Retrieval improvement techniques

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Importance of Finding the Right Information

• Personal weather, traffic, investment, etc.
• Academic prior studies for literature review.
• Medical symptoms, treatments, etc.
• Legal precedents to support arguments, etc.

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What Makes Text Retrieval Difficult?

• Ill-understood info needs
• Ill-formed queries
• Linguistic and semantic complexities
• Word-sense ambiguity, semantic, syntactic, etc.
• and many more reasons!

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Data Retrieval v.s. Info Retrieval (from
Rijsbergen Ch1)
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What Do People Want from IRby W. Bruce Croft

• Source D-Lib Magazine, November 1995, or
  http//sunsite.anu.edu.au/mirrors/dlib/dlib/novemb
  er95/11croft.html
• 10. Relevance Feedback (try Google)
• 9. Information Extraction (http//www.clearforest.
  com/ )
• 8. Multimedia Retrieval (try Google image search)

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What Do People Want from IRby W. Bruce Croft

• 7. Effective Retrieval
• 6. Routing and Filtering (try msnbc.com, or ACM
  digital library bookshelf.)
• 5. Interfaces and Browsing
• 4. "Magic" (Automatic Query Expansion)

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What Do People Want from IRby W. Bruce Croft

• 3. Efficient, Flexible Indexing and Retrieval
• 2. Distributed IR
• 1. Integrated Solutions

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Resources Research Groups

• CIIR, U Mass at Amherst
• http//ciir.cs.umass.edu/
• W. Bruce Croft
• IR Group of U Glasgow, U.K.
• http//www.dcs.gla.ac.uk/ir/
• Keith Van Rijsbergen

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Resources Research Groups

• Web SOM of Finland
• http//websom.hut.fi/websom/
• Kohonen
• AI Lab of MIS dept at U of Arizona
• http//ai.bpa.arizona.edu/
• Hsin-Chun Chen

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Resources Famous IR Researchers

• Late Gerald Salton, Cornell U
• (read his books in library)
• Susan Dumais, Microsoft
• Karen Spark Jones
• And many more (check contributing authors in
  Readings in Information Retrieval.)

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Resources Journals

• From Korfhage p. xiii
• JASIST (formally JASIS)
• ACM (please visit its digital library)
• Other suggestions
• IPM (Information Processing and Management)
• Journal of Documentations

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Resources Conferences Proceedings

• TREC Text REtrieval Conference
• http//trec.nist.gov/
• ACM/SIGIR
• http//www.sigir2001.org/
• ASIST
• http//www.asis.org
• JCDL
• http//www.acm.org/jcdl/
• CIKM
• http//www.cikm.org/

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Reminder

• Self-introduction is due by Saturday, Sept 14.
• An Online Search Log is due by Saturday, Sept
  21.
• Read information about search engines and
  directories from this site first
  http//library.albany.edu/internet/searchnet.html