The user interface role:
(1) aid in the searchers’ understanding and expression of their information need
(2) formulate their queries
(3) select among available information sources
(4) understand search results
(5) keep track of the progress of their search
User interaction with search interfaces differs depending on
(1) the type of task
(2) the domain expertise of the information seeker
(3) the amount of time and effort available to invest in the process
User interaction with search interfaces can be divide into two distinct parts
(1) information lookup
(2) exploratory search, including learning and investigating tasks
Classic Model VS. Dynamic Model
Classic notion of the information seeking process:
(1) problem identification
(2) articulation of information need(s)
(3) query formulation
(4) results evaluation
More recent Models emphasize the dynamic nature of the search process
(1) The users learn as they search
(2) Their information needs adjust as they see retrieval results and other document surrogates
The primary methods for searcher to express their information need:
(1) entering words into a search entry form
(2) selecting links from a directory or other information organization
display
The document surrogate refers to the information that summarizes the document.
(1) This information is a key part of the success of the search interface
(2) The design of document surrogates is an active area of research and experimentation
(3) The quality of the surrogate can greatly effect the perceived relevance of the search results listing
Tools to help users reformulate their query
(1) One technique consists of showing terms related to the query or
to the documents retrieved in response to the query
(2) A special case of this is spelling corrections or
suggestions
Organizing Search Results:
(1) Category system: meaningful labels organized in such a way as to reflect the concepts relevant to a domain
(2) Clustering refers to the grouping of items according to some measure of similarity
Visualizing Query Terms
(1) Understanding the role of the query terms within the retrieved docs can help relevance assessment
(2) In the TileBars interface, for instance, documents are shown as horizontal glyphs
Words and Docs Relationships
(1) Numerous works proposed variations on the idea of placing words and docs on a two-dimensional canvas
(2) Another idea is to map docs or words from a very high- dimensional term space down into a 2D plane
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