Transcript Yinghua_Hu.ppt

Cohesive Design of Personalized Web Applications
Schwabe, D. Mattos Guimaraes, R. Rossi, G.
Pontificia Univ. Catolica do Rio de Janeiro;
Internet Computing, IEEE, 34-43, Vol. 6, Issue 2,
Mar/Apr 2002
Presented by Yinghua Hu
Content
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Introduction
The Software Engineering Approach
OOHDM Design Framework
Mapping OOHDM Designs
Personalization Patterns
Conclusion
Introduction
• Today’s challenge is building customizable Internet
applications.
– New kinds of personalization have become important with the
rise of e-commerce and increasing competition among
sophisticated Web sites.
• Reseachers have paid little attention to integrating all the
personalization features into a single design.
• This article describes using the Object-Oriented
Hypermedia Design Method (OOHDM) for constructing
customized Web applications.
The Software Engineering
Approach
• Legacy Web applications are already a reality,
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possibly heralding a Web software crisis.
Designing complex Web applications requires
rigorous software engineering techniques.
Web applications exhibit features different from
conventional software.
New methods required to address Web
applications’ particular design dimension.
OOHDM Design Framework
• Web application models involve
– A conceptual model
– A navigational model
– An interface model
• In OOHDM, these models are built using
object-oriented primitives with a syntax
close to UML.
What does the OOHDM framework
provide?
• For the conceptual model, the OOHDM
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framework explicitly represents users, roles, and
groups, and defines algorithms that implement
different business rules for different users;
For the navigational model, it defines completely
different applications for each profile, customizes
node contents and structure and personalizes
links and indexes.
For the interface model, it defines different
layouts according to user preferences or
selected devices.
Mapping OOHDM Designs
Personalization Patterns
• Role-based Personalization
• Link Personalization
• Structure Personalization
• Content Personalization
• Behavior Personalization
Behavior Personalization
• Suppose we want to provide individualized
responses to a particular operation
• Solution
– Personalize the application behavior by
making the behavior dependent on the user
triggering it.
• OOHDM approach
Behavior Personalization
Using Patterns to Simplify Design
Understanding the personalization
patterns to apply simplifies the design
enterprise, because we can reuse design
experience when dealing with previously
solved situations.
Conclusion
• The authors strongly believe that the key aspect
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for obtaining evolvable personalized Web
applications is to separate design concerns by
focusing on architectural and design issues
before building the actual application.
Most of the design decisions discussed here can
be easily applied in other Web design methods.