Information Technology Reference
In-Depth Information
Description:
Any information given in the system can be described in different
ways. This knowledge base contains different descriptions which can be given to
the user: there will be a specific and detailed description (e.g. for physicians),
detailed descriptions for travelers (who are no physicians) and brief information
(for experienced travelers as reminders, etc.).
Guidelines:
This knowledge source will contain the ”How to”-descriptions to
help travelers to put the given information in practice. This case base is especially
for travelers.
Experience:
According to the motivation we will integrate the users experience
to the system. This knowledge base will contain experiences and feedback given
by travelers.
Temp l ate :
This database contains templates to display the result created dur-
ing the processing of the request. The templates will be used to ensure a struc-
tured and printable output.
Profile:
This database contains user profiles of experts who edit data, admin-
isters or regular users who want to create a profile to get faster access to their
required information.
5.2 Combination of Information Retrieved from Knowledge Sources
The flexible knowledge provision based on distributed, heterogeneous knowledge
sources can be accessed in different ways. We combine retrieval results of several
CBR systems embedded in a multi-agent system. The novelty of our approach
is the use of heterogeneous case bases for representing a modularized complex
knowledge domain. There have been other approaches using partitioned and/or
distributed case bases, but still differ from our approach. In SEASALT the knowl-
edge provision task is carried out by a so called Knowledge Line that contains a
Coordination Agent and a number of Topic Agents that each covers one homoge-
neous area of expertise. In terms of SEASALT we use the modularization aspect
to combine knowledge based on numerous different and homogeneous knowl-
edge sources implemented as CBR software agents. The Coordination Agent is
the center of the Knowledge Line and orchestrates the Topic Agents to enable
the combination of the retrieval results. The implementation of the Coordina-
tionAgentfollowedasetofrequirements that were derived from the SEASALT
architecture description itself and from the implementation and testing of the
Topic Agents.
During the design phase of the Coordination Agent the following requirements
were identified:
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The case representations of the Topic Agents differ from each other as well
as the agents' respective location might vary. This requires flexible access
methods that are able to deal with distributed locations, different kinds of
result sets and possibly also different access protocols.
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