LIBR 202
Information Retrieval
Calendar

• Course overview and logistics
• Forming project groups

• Course overview and logistics
• "Information Retrieval" (IR) and a model
• Taxonomy and architecture of IR systems
• Retrieval of items vs. retrieval of information
• "Surrogates" as descriptive representation of information items

• Attribute extraction, meta data, and cataloging
• USMARC and other MARCs
• Cataloging rules (AACR2 as example)
• Authority control
• Dublin Core and web cataloging

• Notion of subject analysis and indexing
• Descriptors and subject headings
• Thesaurus
• Library of Congress Subject Headings
• MEDLARS and Sears subject headings

• Classification and classification schemes
• LC Classification
• Dewey Decimal Classification
• Other classification schemes

• Notion of Relational Database Model
• Records and fields
• Fixed- and variable-length
• Peculiar characteristics of text fields
• Sequential file

• Inverted file as index
• Field-based indexing
• Keyword-based indexing
• Stemming and vocabulary control

• Boolean operators: AND, OR, NOT
• Searching effects of Boolean operators
• Truncation and wild card operator
• Query formulation using the Boolean logic

• Automatic extraction of keywords as index
• Indexing of term location and word distances
• Term frequency and term weighting
• Searching with expanded Boolean approach
• Relevance ranking and the Vector Space Model
• Prof. Leydesdorff's keyword extracting freeware

• Notions of "pertinence" and "relevance"
• System/user perspective of relevance judgment
• Factors involved in relevance judgment
• Measuring IR performance: precision and recall

• Cognitive model of information seeking
• Mental model of information seeking
• Behavioral model of information seeking
• Implications for IR system/interface design

• An "interface" and a good "interface"
• Direct manipulation: Jeff Han's presentation
• 3D virtual nagivation: Fly through human body
• Topic Map: The Omnigator (demo) & Topicmap.com tools
• Kruk, S. R. (2008). Rendering navigation and information space with HoneyComb
• Geographic Information System (GIS): Google Map & Google Earth
• Hammock, A. (2010, Jan. 4). The future of brain-controlled devices. CNN.com

Completion & Presentation of Individual Project (IP)

• Client-server configuration of IR systems
• "Information agent" in distributed IR
• Information filtering" & user profiling
• Relevance feedback & automated search assistance
• NLP, multimedia, multilingual (babelplex.com) IR
• Music IR:  Music-ir.org & Pandora.com
• Dream and reality of a "Digital Library"
• What the future holds: Stix, G. (2008, November 12). Jack into the brain: Is the brain the ultimate computer interface? Scientific American Magazine.

Marchionini,
Ch. 8, Ch. 9,
Chowdhury, Ch. 16, 18-23

Elluminate Session
12/9 9:00-11:45am

DUE: 12/10 11:30pm