voting with average of probabilities in weka

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Output attribute is risky patient. Values are yes and no. If yes then patient is risky, and if no then patient is not risky.

If I am combining 3 classifier for classification model in weka, and if final result will be calculated by average voting:

For Exp: Classifier 1 result- yes, Classifier 2 result- no, Classifier 3 result- yes,

count of yes=2, count of no=1

Final result will be yes as it's count is high. This is understandable.

But if I am combing 2 classifier,

For Exp: Classifier 1 result-yes, Classifier 2 result-no

count of yes=1, count of no=1

Now, What will be result? As yes and no has same count value.

How is weka working in case of this kind of combination of two multiple classifier? It's really confusing..

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