2002
DOI: 10.1016/s0933-3657(02)00012-x
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Probabilities for a probabilistic network: a case study in oesophageal cancer

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Cited by 119 publications
(67 citation statements)
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“…This means to specify the strength of the relations defined by G using the CPDs of P. For each variable v ∈ V, we specify the CPD P (V |pa(V )) of V conditional on pa(V ) ⊆ V. When sufficient hard data to perform parameter estimation is not available, it is necessary to assess the probability values in a different way. There are a number of techniques that can be used to elicit probability values from domain experts [33] including direct, e.g., [34] and indirect methods, e.g., [35]. An common alternative to elicitation from experts, is to use literature, mathematical formulas to specify the relationship between a variable V and its direct parents pa(V ) or methods as described above.…”
Section: Implementmentioning
confidence: 99%
“…This means to specify the strength of the relations defined by G using the CPDs of P. For each variable v ∈ V, we specify the CPD P (V |pa(V )) of V conditional on pa(V ) ⊆ V. When sufficient hard data to perform parameter estimation is not available, it is necessary to assess the probability values in a different way. There are a number of techniques that can be used to elicit probability values from domain experts [33] including direct, e.g., [34] and indirect methods, e.g., [35]. An common alternative to elicitation from experts, is to use literature, mathematical formulas to specify the relationship between a variable V and its direct parents pa(V ) or methods as described above.…”
Section: Implementmentioning
confidence: 99%
“…In communicating a conditional probability to our domain, we do not use mathematical notation -the requested probability is translated into a fragment of text instead. To support the experts in their assessment task, a verbalnumerical sliding response scale [15] was provived.…”
Section: Model Parametersmentioning
confidence: 99%
“…With the variables are associated conditional probabilities that describe the strengths of the influences between the variables. The oesophagus network currently comprises over 70 statistical variables for which more than 4000 conditional probabilities have been specified [4].…”
Section: The Oesophagus Networkmentioning
confidence: 99%