|Data and Plan Visualization
|Institute of Software Technology and Interactive Systems, Vienna University of Technology
||Visualisation, time-oriented data,
computerised clinical guidelines, Asbru
|Research prototype - under continued development
Information Visualization is the use of computer-supported
interactive visual representations of abstract data to facilitate
cognition: Within the Asgaard/Asbru project we focus on data
and plan visualization during the design and execution of guideline
and protocol applications. We are working on an graphical user
interface to Asbru which support the development of guidelines
and protocols, called AsbruView .
Different methods are in development which are dealing with
the visualization of data and plans during the execution phase
and are utilizing Focus+Context techniques (e.g.,
Semantic Depth of Field (SDOF))
Asbru is a complex language which cannot be understood by physicians
with no or little training in formal methods. AsbruView
is a tool to make Asbru accessible to physicians, and to give
any user an overview over a plan hierarchy. AsbruView is based
on visual metaphors to make the underlying concepts easier to
grasp. This was done because not only is the notation foreign
to physicians, but also the underlying concepts.
AsbruView consists of two main views: Topological View (TopoView) and Temporal
The Topological View mainly displays the relationships between
plans, without a precise time scale. The basic metaphor
in this view is the running track.
The Temporal View concentrates on the temporal dimension
of plans and conditions. In addition to the topological
information, physicians need to be able to see the details
of the temporal extensions of plans. For this purpose, the
temporal view is used. It consists of a display that represents
each plan with a so-called glyph, i.e., a graphical object
whose features change with the values they depict:
Anatomy of an AsbruView Plan in Topological View.
Example screen shot of the Temporal
| Kosara R, Miksch S. Metaphors of Movement:
A Visualization and User Interface for Time-Oriented, Skeletal
Plans, Artificial Intelligence in Medicine, Special Issue:
Information Visualization in Medicine, pp. 111-131, 22(2), 2001.
Vienna - Paper]
|" Therapy planning plays an increasingly important
role in the everyday work of physicians. Clinical protocols
or guidelines are typically represented using flow-charts, decision
tables, or plain text. These representations are badly suited,
however, for complex medical procedures.One representation method
that overcomes these problems is the language Asbru. But because
Asbru has a LISP-like syntax (and also incorporates many concepts
from computer science), it is not suitable for physicians.Therefore,
we developed a visualization and user interface to deal with
treatment plans expressed in Asbru. We use graphical metaphors
to make the underlying concepts easier to grasp, employ glyphs
to communicate complex temporal information and colors to make
it possible to understand the connection between the two views
(Topological View and Temporal View) available in the system.In
this paper, we present the design ideas behind AsbruView, and
discuss its usefulness based on the results of a usability study
we performed with six physicians. "
|Miksch, S., Kosara, R., Shahar, Y., and
Johnson, P. AsbruView: Visualization of time-oriented, skeletal
plans. In: The Fourth International Conference on Artificial
Intelligence Planning Systems 1998 (AIPS-98) (Carnegie-Mellon
University, Pittsburgh, Pennsylvania), AAAI Press, Menlo Park,
- Abstract] [U.
Vienna - paper]
|" Skeletal plans are a powerful way to
reuse existing domain-specific procedural knowledge. The main
draw-backs are that the compositions and the interdependencies
of different skeletal plans and their components are not lucid.
The aim of this paper is to overcome these limitations and to
present the visualization of time-oriented, skeletal plans.
Within the Asgaard project, we have developed a time-oriented
and intention-based language, called Asbru, to represent such
skeletal plans. The Asbru syntax is defined in Backus-Naur form
(BNF). Reading BNF or similar forms are next to impossible even
for domain experts. We explored different representations and
automated knowledge-acquisition tools. However, the domain experts
did not accept any of these representations. Consequently, we
investigated different metaphor graphics and ended up with a
plan visualization utilizing the metaphors of "tracks" and "traffic"
called AsbruView. We formatively evaluated different approaches
of this plan visualization with physicians applying treatment
protocols of mechanical ventilated newborn infants.
Institute of Software
Technology and Interactive Systems
Vienna University of Technology
|Robert Kosara and Silvia Miksch,
Vienna University of Technology, Institute of Software Technology and Interactive Systems, Vienna, Austria
Entry on OpenClinical: 20 May 2005|
Last main update: 20 May 2005