Spent most of yesterday writing Q2 of TMA03. I'm not sure I entirely understand what is menat by the "doing" part of the project but I've done what I can, bearing in mind the practical work is far from repeat.
I've actually started to enjoy using Flex. I've been modifying the program that uses certainty factors and added more rules (kbs 6 and 7) and have tested with a couple of patients and it seems to work fine. The certainties of the evidence which are used at the start of the program have caused much head scratching. For example:
All patients under 30 years old do not suffer recurrence. So I can asign a certainty of -1.0 to the rule for the certainty that the patient will suffer recurrence. But if the patient is over 30 the evidence then the statement "is the patient under 30" is definitely not true so the certainty factor in the starting statement entered in the console would be -1. Implying that recurrence must occur which isn't true, I think.
So I've fiddled with the certainty factors in the rules to try to overcome this problem and tested with -1 or 0 in the starting statement when the condition is not true.
I am actually finding the TMA a pain because I actually have some enthusiasm for Flex at the moment and want to get on, but I have to finish the TMA.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment