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Textbook questions

posted Aug 10, 2009, 3:36 PM by Unknown user   [ updated Aug 10, 2009, 3:52 PM by Eddie Woo ]
23. Who is responsible for decisions made using DSSs? Explain your answer.
The user of the system should be responsible for the decisions made by the system, because the decision support systems are designed to support their decision-making, not take over the process. The user is still the human & ultimately the one who makes the decision, even if it was suggested to them by the DSS.
However, if the system is faulty in the first place & makes inappropriate decisions as a result, the knowledge engineers, programmers & the people who tested the system should be held responsible as well.
24. Summarise the process of building a DSS that involves an expert system. List the people involved & describe their roles.
Building a DSS involving an expert system would require a knowledge engineer & a human expert of that domain. The human expert would have to supply the knowledge to the knowledge engineer, who would have to work out a suitable way to organise that so that the system can use the data.
Acquisition - data, information, rules & other knowledge is supplied to the system
Organising - the knowledge is put into a format that the system can understand
Validation - the system is tested to make sure that it works and the knowledge is correct
Design - the process of inferring new facts & understanding how they were reached
27. Explain the role of input weights or 'fuzzy logic' in artificial neural networks. What advantages does this give them over conventional systems?
Fuzzy logic allows for systems to deal with data that is neither completely true nor completely false. Instead, it gives the system probably