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Backtest 1998 (S & P 500)

For 1998:
Naive-Bayes: Positive, Up,   Prediction Count is 131
Naive-Bayes: Negative, Down, Prediciton Count is 121
Naive-Bayes: Total Accuracy is 55.0%
Naive-Bayes: Positive, Up,   effectiveness is 0.24772519083969463%
Naive-Bayes: Long-only effectiveness is 0.09978571428571431%
Naive-Bayes: Negative, Down, effectiveness is -0.06038016528925617%
For 1998:
Logistic-Regression: Positive, Up,   Prediction Count is 129
Logistic-Regression: Negative, Down, Prediciton Count is 123
Logistic-Regression: Positive Accuracy is 56.0%
Logistic-Regression: Negative Accuracy is 59.0%
Logistic-Regression: Total Accuracy is 51.0%
Logistic-Regression: Positive, Up,   effectiveness is 0.08553488372093025%
Logistic-Regression: Long-only effectiveness is 0.09978571428571431%
Logistic-Regression: Negative, Down, effectiveness is 0.11473170731707322%

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