Minna Isomursu, Prof'

1
Ubiquitousness measurement framework CAPNET Mobil
e Forums Research Focus Area

• Minna Isomursu, Prof.
• HCI lab/TOL/University of Oulu

2
Introduction

• The ubiquitousness measurement framework can be
  used for measuring how ubiquitous the application
  or service scenario is
• The framework does not measure the quality,
  usability or any other quality factor of the
  application, i.e. high ubiquitousness measure
  does not imply high quality application

3
Measurement dimensions

• Invisibility dimension, which has two components
• ddisturbance. The degree, how much a service
  disturbs the user in her actions.
• mmasking uneven conditioning. Is the user able
  to act normally, even if the service/application
  is not available or is not fully functional?
• Environment awareness dimension, which has two
  components
• cconnectivity. The device where the ubiquitous
  service or application is located is connected to
  its environment.
• cacontext awareness. The service or application
  is able to monitor the context of its
  environment, itself, and its users.

4
How to measure d (disturbance)?

• Proposed measures

5
How to measure m (masking uneven conditioning)

• Proposed measures

6
How to measure c (connectivity)?

• Proposed measures

7
How to measure ca (context awareness)?

• Proposed measures

8
Counting ubiquitousness level

• From the measures described before, we can count
  the level of Invisibility (I) using the formula
• and the level of Environmental awareness (EA)
  using the formula
• and as a result we get measure of ubiquitousness
  expressed by two numbers representing our two
  measurement dimensions

• I (d m) / (max(d) max(m))

• EA (ca) / (max(c) max(a))

9
Visual presentation
Invisibility

• The attached visual presentation can be used in
  placing the measurement result into space of
  ubiquitousness

1
0.75
1
0
0.25
0.75
Environment awareness
0.25
0