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Backtest 1989 (S & P 500)

For 1989:
Naive-Bayes: Positive, Up,   Prediction Count is 103
Naive-Bayes: Negative, Down, Prediciton Count is 149
Naive-Bayes: Total Accuracy is 48.0%
Naive-Bayes: Positive, Up,   effectiveness is 0.14112621359223299%
Naive-Bayes: Long-only effectiveness is 0.10957539682539688%
Naive-Bayes: Negative, Down, effectiveness is 0.08776510067114097%
For 1989:
Logistic-Regression: Positive, Up,   Prediction Count is 136
Logistic-Regression: Negative, Down, Prediciton Count is 116
Logistic-Regression: Positive Accuracy is 59.0%
Logistic-Regression: Negative Accuracy is 69.0%
Logistic-Regression: Total Accuracy is 50.0%
Logistic-Regression: Positive, Up,   effectiveness is 0.0862132352941176%
Logistic-Regression: Long-only effectiveness is 0.10957539682539688%
Logistic-Regression: Negative, Down, effectiveness is 0.1369655172413793%

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