1. Quality labelling for Web-pagesby
Thomas Mestl
Strategic Research, DNV

2. Quality aspects on a web page
Visual Layer
Presentation Quality
Technical Layer
Presentation layer:
called web design
intuitive, self explaining icons, chosen fonts,
used colour, page layout (arrangement of content),
how much graphic vs. text,
links easy to find
ergonomy
Technical layer: browser dependent, download time,
Data layer: actual info content of a web page
how correct and relevant is it to the user
Technical Quality
Data Layer
Data & Information Quality

3. Quality How to determine the Quality?
Quality is the totality of features and characteristics of a product or service that bear on its ability to satisfy stated or implied needs (ISO 8402 def.).
How to determine the Quality?
by verifying it against stated requirements!
documenting verification results!

4. General quality information about the Web site:
Content
Responsible
Contributor verified e.g.each day
Date of last editing & documented
etc.
Quality of technical information:
all links are working
download time
browser dependencies verified e.g. each day
required cookies & documented
Quality of data set:
Verified & documented that e.g.
data are collected/generated according to specified requirements
data are pre-processed according to specified procedure
data are verified against specified requirements
data are cross checked
Quality of underlying mathematical model:
Verified & documented that e.g.
model captures the essential behaviour of the system
model predicts correctly in 90 % of the cases
Quality of the software:
Verified that e.g.
software is functioning as specified
software can handle faulty data

5. Demonstration by Rolf Lindgren