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Backtest 1987 (S & P 500)

For 1987:
Naive-Bayes: Positive, Up,   Prediction Count is 148
Naive-Bayes: Negative, Down, Prediciton Count is 105
Naive-Bayes: Total Accuracy is 50.0%
Naive-Bayes: Positive, Up,   effectiveness is 0.06959459459459465%
Naive-Bayes: Long-only effectiveness is 0.03685770750988149%
Naive-Bayes: Negative, Down, effectiveness is -0.00928571428571435%
For 1987:
Logistic-Regression: Positive, Up,   Prediction Count is 135
Logistic-Regression: Negative, Down, Prediciton Count is 118
Logistic-Regression: Positive Accuracy is 58.0%
Logistic-Regression: Negative Accuracy is 66.0%
Logistic-Regression: Total Accuracy is 52.0%
Logistic-Regression: Positive, Up,   effectiveness is 0.1276296296296296%
Logistic-Regression: Long-only effectiveness is 0.03685770750988149%
Logistic-Regression: Negative, Down, effectiveness is -0.06699152542372883%

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