advanced techniques to support the design and evaluation of websites information architecture
DESCRIPTION
Short overview of my PhD researchTRANSCRIPT
ADVANCED TECHNIQUES TO SUPPORT THE DESIGN OF WEBSITES INFORMATION ARCHITECTURE BASED ON MODELS OF HUMAN-INFORMATION INTERACTION
Christos Katsanos ([email protected])HCI Group, University of Patras, Greece
Purpose & Motivation
Increase objectivity & efficiency for the design & evaluation of websites information organization
Aspects addressed Structural design Links’ Labeling
Both aspects addressed greatly affect User Experience Existing approaches are often neglected:
Time & Cost constraints Increased complexity of data analysis Large & Rapidly-changing web sites Hard to go from user-research to the design itself
Proposed approach at a glance
Two tool-based methods: Automated Card Sorting Tool (AutoCardSorter) InfoScent Evaluator Tool (ISEtool)
Based on Information Foraging Theory Semantic Similarity Algorithms (e.g. Latent
Semantic Analysis) Mathematical/Statistical techniques (e.g. cluster
analysis, eigenvalue analysis)
Katsanos C., Tselios N., Avouris N. (2008) Automated semantic elaboration of web site information architecture. Interacting with computers, 20 (6), p.p. 535-544, doi:10.1016/j.intcom.2008.08.002
Katsanos C., Tselios N., Avouris N. (2008) AutoCardSorter: Designing the Information Architecture of a Web Site using Latent Semantic Analysis. In Proceedings of the SIGCHI conference on Human factors in computing systems, CHI 2008 (pp. 875-878), Florence, Italy: ACM Press, April 5-10, 2008,
Tselios N., Katsanos C., Avouris N. (2007) Beyond user centered design: A web design approach based on information foraging theory. In Proceedings of Workshop Are New Methods Needed in User-Centered System Design?, INTERACT 2007, Rio de Janeiro, Brazil, 10-14 September 2007
AutoCardSorter – Structural Design
Method Overview
Page Text Descriptions
Semantic Similarity Measure (e.g. LSA)
Hierarchical Clustering Algorithms
Interactive Tree Structure
Additional Support1. Number of Groups2. Cross-Hierarchy Links
Semantic Similarity
Matrix
Tool Interface
Page Descriptions
Interactive Tree Structure
Additional Support
4 Validation Studies
AutoCardSorter
vs
Card Sorting
Katsanos C., Tselios N., Avouris N. (under revision A). Evaluating Website Navigability: Validation of a Tool-based Approach through Two Eye-tracking User Studies, New Review of Hypermedia & Multimedia
Tselios N., Katsanos C., Avouris N. (2009). Investigating the Effect of Hyperlink Information Scent on Users’ Interaction with a Web Site. In Proceedings of the 12th IFIP TC13 Conference in Human-Computer Interaction, INTERACT 2009, LNCS 5727, Part II (pp. 138-142), Uppsala, Sweden: Springer Verlag, August 24-28, 2009.
Tselios N., Katsanos C., Avouris N. (2007) Beyond user centered design: A web design approach based on information foraging theory. In Proceedings of Workshop Are New Methods Needed in User-Centered System Design?, INTERACT 2007, Rio de Janeiro, Brazil, 10-14 September 2007
Katsanos C., Tselios N., Avouris N., (2006). InfoScent Evaluator: A semi-automated tool to evaluate hyperlinks’ semantic appropriateness of a web site. In Proceedings of OZCHI 2006 (pp. 373 – 376). Sydney: ACM Press.
ISEtool – Links’ Labeling
Method Overview
User Goal in Text
Parser
Evaluated Web Page
Links Properties Table
Navigability Issues
“Information Scent” = Semantic Similarity Measure (e.g. LSA)
Page Level1. Competing Links2. Weak Scent3. Unfamiliar Words
Site Level1.‘Bad’ Scent Trail
Tool Interface
Internal Browser
Links Properties Table
User goal
Weak Scent Link
2 Validation Eye-Tracking Studies
Advantages of proposed tool-based approach
Cost-effective (time & resources)
Explore alternative solutions early
Simple to learn and apply
Easy to apply for large sites (>100)
Can be easily incorporated in popular
web development IDEs
Valuable for sites that have totally
unfamiliar domain to the practitioner
Possibility for wider adoption
Complementary to user-based methods
http://hci.ece.upatras.gr Download papers related to the research presented Ask to try out the tools
Comments, Feedback or any Inquiries [email protected]
Thank you!