And Finally

This may be my last blog entry as I am just completing the last question of TMA04. The poster is done. I hope it is OK but it's too late to worry about now. I did it on pre-processing which may not be technical enough.

Anyway that's it. Top Gear is on in 30 mins and I'm off.

Almost There

Looks nice. Have no idea how good it is. I'm not that impressed. I keep thinking about things I could have done. Will print out final version this evening

Saturday 3rd November

Continuing to write up. Taking longer than I would like

Monday 22nd October

Last night I finished all the practical work. I managed to test a MLP with the same inputs as the KBS. I tried various certainty factors and rules with the KBS to improve performance but it could not match the MLP. At least this is a direct comparison of KBS vs NNs which all the other experiments are not.

Began write up today. I will just carry on from the draft really as there wasn't much wrong with that. Word 2007 does make it look impressive. So even if it's crap it will look good.

Sunday 20th

Rechecked scoring of KBS experiments and corrected a few mistakes. Both experiment scoring the same though PPVs are different.

A few observations about these KBS:

Is there any point in putting three rules in for the grade as by inference if it’s not one then it’s one of the other two? Would two rules be enough

There are no cases in the training set with 18+ lymph nodes but this rule does exert an influence on the other cases. Do I remove it?

Currently modifying original KBS to test this.

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Saturday 19th October

A rare weekend day with not a great deal to do. So more OU. Not much more to do now. I completed testing and scoring my flex program yesterday. I built a MLP last night and tested the same training file as I have been using to test the flex program, however I did this with the full 32 input neurons. The MLP scored very well but it will be interesting to see how it scores with the same number of inputs as the flex program. This is what I am doing now. I am modifying the KBS input files for the MLP.

I have in the mean time modified the certainty factors in the flex program to try to improve the performance but without success.

Will complete this practical work and begin writing up the results and the project this weekend.

T-25 days

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Friday 19th Arrrggghhhh!

Tried copying the line "prognosis is reccurence" from rule r1c to everywhere it occured in the other rules etc. Then recompiled and tried again. Rule r8c now working properly. Cannot see why this happened. See below:

C.F. : TRY : r8c
C.F. : LOOKUP : (grade is '3') = -1
C.F. : IMPLIES : cf(0.35) @ -1 -> -0.35
C.F. : LOOKUP : (prognosis is reccurence) = 0.2
C.F. : CONFIRMS : 0.2 + -0.35 -> -0.1875
C.F. : UPDATE : (prognosis is reccurence) = -0.1875
C.F. : FIRED : r8c

Looked at the certainty factor example in Chapter 3 of T396 and it doesn't simply add certainty factors together.

Start testing KBS again!

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