Lab7 - Influence diagram in a Bayesian belief network (5pts)
In this lab you will learn to use the BBN model you built in the previouse lab to infer decisions.
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Use your browser to access the Hugin
RESOURCES
page which has many cases, demos, articles, tutorials etc. Under Tutorials, click theBuilding a BN Tutorial
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Complete the
Tutorial 2. Building a (Limited Memory) Influence Diagram
. You may use the basic BBN from last lab as a start up for this lab. -
Submit your answers to the following questions in a .txt or .docx document.
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For the treatment cost of -8000, Jack should treat the apple tree if the tree loses leaves?
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Experiment with different values for the cost of a treatment to estimate what treatment cost would represent the cutoff above which treatment would be worth the cost. Give the answer to this question as an interval [a,b], with |b-a| = 100.
Notes:
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Make sure you add the nodes in the exact order presented in the tutorial (it is very important!).
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After changing costs, make sure you click the “Spu” button (Update decision policies).
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For cost = -6,000 I got 12234.39 expected utility to TREAT. For cost = -7,000 I got 11514.01 expected utility NOT to TREAT.
Grading: Submit your text document at the provided link.