GROUP DSS
Having basic understanding of decision-making process and DSS,
let us find out what is Group Decision Support Systems (GDSS). GDSS are
interactive computer-based systems that facilitate decision-makers working
together as a group to arrive at a solution for unstructured problem.
The group of executives analyzes problem situations and performs group
decision-making tasks. The GDSS provides mechanisms to help the users to
coordinate and keep track of on-going projects, allow them to work together
thru computer-supported communication, collaboration, and coordination.
Typical applications of GDSS include email, awareness and notification systems,
videoconferencing, chat systems, multi-player games, and negotiation systems.
The group decision support system addresses the vary issue of
human behaviour in a given environment along with computer science and
management. It is found that a task assigned to a group is a typical
information processing system that usually provides a judicious solution with
alternatives. The GDSS has several implications that can be listed as follows :
- Enable all participants to work simultaneously thereby promoting
broader input into the meeting process and reducing dominance of few people;
- Provide equal opportunity for participation;
- Enable larger group meetings that can effectively bring more
information, knowledge, and skills for a given task;
-
Provide process structure to help focus the group on key issues
and discourages irrelevant digressions and non-productive behaviors;
-
Support the development of an organizational memory from meeting
to meeting; and
-
Individual satisfaction increases with group size.
The software developed for GDSS focuses principally on assisting brainstorming and mechanizing voting, two of the rare events in business meetings. We have reached the stage of mechanizing word-oriented problems in group meetings.
Group support systems are designed to support group
decision-making through specialized software, hardware and decision support
tools. This can be defined as a combination of computer, communications and
decision technologies working in tandem to provide support for problem
identification, formulation and solution generation during group meetings.
Broadly, the fundamental goal of GDSS is to support the exchange of ideas,
opinions, and preferences within the group. The primary goal of GSS is to
reduce process loss attributed to disorganization within the group,
social issues such as member dominance, inhibition, peer pressure and other recognized
difficulties of group interaction and to improve overall decision quality.
The taxonomy of GDSS is forced by three factors :
1) Group size,
2) Communication channel (face-to-face vs. computer-mediated)
and
3) Task type.
GDSS are believed to improve the quality of group decisions by
minimizing process losses and maximizing process gains. Process gains
occur when certain aspects of the meeting improve the eventual outcome or
result and process losses delay or reduce the final outcome. Thus, the overall
meeting outcome is reliant upon the process gains versus the process losses.
Let us now study some of the terms used in GDSS.
Groupthink : Groupthink is a tendency of group members to fall into similar
thought patterns and to disapprove the opinions that do not confirm to the patterns.
This creates problems in group decision making process and sometimes become big
hurdle in reaching to an appropriate decision. GDSS provides an opportunity to
overcome the problems of groupthink where junior members of the group get equal
chance to put forth their opinions that could not have been possible in
face-to-face situations.
Media Richness is defined as the potential information carrying capacity of
data transmission medium. The information processing depends on the
richness of the communication medium. Figure-1 describes the level of
communication richness across various media. In GDSS, the richness of a medium
depends on availability of number of communication channels and the feedback
that is received by the decision makers. In face-to-face situation, the
communication richness is very high as the feedback and inputs are received
through words used, facial expression, body language and tone. An important
aspect is also selection of communication medium as this varies from task to
task. For example, a low medium richness is more effective in money
transactions via an ATM whereas to understand loaning system of bank highly
rich medium may be required.
Fig.1 : Degree of Communication Medium Richness
Groupware : It is a term which relates to GDSS but is not identical. It is
defined as a computer based system that support groups of people engaged in
common goal and provide interface to a shared environment (Ellis, 1991). The
field that studies how people use groupware is called Computer-Supported
Cooperative Work (CSCW). The relations among the DSS, GDSS and Groupware
can be understood through Figure-2
Fig-2 : Relationship
Among DSS, GDSS and Groupware
As can be seen, GDSS is a part of DSS whereas groupware may or
may not be essential component of DSS though it has some properties similar to
GDSS.
War room, also known as electronic meeting room or electronic boardroom,
is a facility created for GDSS by networking computers for each member
participant. It is equipped with a large screen video display that can be seen
by all the participants.
There is a facilitator to control the display and have access to
all members’ computers. The software used have the capabilities to plan a
session and group members can propose agenda items through it. It can organize
and structure members’ comments and can record them as organisational memory
for longer and effective use.
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