MusicLand: Exploratory Browsing in Music Space Heidi Lam December 15, 2004 CPSC 533CInformation...
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Transcript of MusicLand: Exploratory Browsing in Music Space Heidi Lam December 15, 2004 CPSC 533CInformation...
MusicLand:Exploratory Browsing in
Music Space
Heidi Lam
December 15, 2004
CPSC 533C Information Visualization Project Presentation
Agenda• Motivation: Exploratory browsing?
• The ideal infovis solution: what should it be?
• MusicLand: my proposed solution
– Visualization features
– Demo
– Evaluation
– Future Work
Project Idea• How can computer tools/interfaces better support
exploratory browsing?
• What is exploratory browsing?
Two Scenarios at an Online Store1. Find/Search: Looking for Ray Charles’ “The Spirit of
Christmas” with using the store’s search tools, and input terms: “Ray Charles” and “spirit of Christmas”
2. Exploratory Browsing: Browsing at the “Classical” section Came across a Jazzified version of Bach Go to the “Jazz” section Ray Charles’ Christmas album is being advertised
Two Scenarios at an Online StoreThe goals and assumptions of these scenarios are
different:
• With find/search: – with clear and precise targets – want to find the target as quickly as possible
• With exploratory browsing:
– need multiple queries to refine/define target
– getting there is half of the fun/work?
Project MotivationExploratory browsing is not well supported by current search tools…
To better support exploratory browsing, the interface should …
1. Provide context: to allow users to interpret the query results based on their input terms what am I looking at?
2. Guide navigation: going from the familiar to the unfamiliar Given where I have been, where should I go next?
3. Assist refinement of target: based on retrieved results and query terms what can I look for next?
MusicLand—Query Display
• to put results in context of query terms
• to relate neigbouring regions by a query term
• Colour-coding the single term regions with primary colours, and the intersected areas with a mix of those colours
• Perceptual Layering to indicate the relative importance of each result region
Arranges query results as a rectangularized Venn diagram
MusicLand—Semantic ZoomingTo increase display capacity
– Full (artist, title, genre, style)
– Partial (artist, title)
– Minimal (artist)
– Nil (number of results)
Zoom
• New query is an “extension” of old, linked by line, colour, and position
MusicLand—New Query
• Select record of interest brings up a list of selectable attributes
select new terms
• Old unused query regions fade and desize: Time metaphor
MusicLand—EvaluationBased on a 2-participant formative evaluation
Strengths:
• Interprets query results in context
• Provides of possible query term choices
• Guides towards future queries with history
• Fades and desizes unused query regions
Looks like MusicLand has largely achieved its design goals :o)
MusicLand—EvaluationWeaknesses (Participants’ List):• No album details
• Asymmetry of query term display
• No indication of new query terms in new query
• No Previews/Closing of query displays
Weaknesses (My list):• Scalability
• Perceptual layering
• Colour fading
MusicLand—Lessons Learned
• The importance of prototyping
• Colour is difficult
• Providing context and details has a price in scalability
MusicLand—Future Work
• Improve usability based on participants’ comments
• Launch and play the music albums
• Conduct usability study to verify the design principles behind MusicLand, and to study exploratory browsing
Conclusion• MusicLand is a tool designed to support exploratory
browsing …
– Displays retrieved results in a rectangularized Venn diagram to cluster results and to provide query terms as context
– Guides refinement of queries by providing a selectable list of attributes based on user’s current album of interest
– Anchors and guides new query formation by providing a history
• Formative study with encouraging results