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Backtest 2008 (S & P 500)

For 2008:
Naive-Bayes: Positive, Up,   Prediction Count is 168
Naive-Bayes: Negative, Down, Prediciton Count is 85
Naive-Bayes: Total Accuracy is 53.0%
Naive-Bayes: Positive, Up,   effectiveness is -0.07274556213017752%
Naive-Bayes: Long-only effectiveness is -0.1404782608695652%
Naive-Bayes: Negative, Down, effectiveness is -0.27675000000000005%
For 2008:
Logistic-Regression: Positive, Up,   Prediction Count is 145
Logistic-Regression: Negative, Down, Prediciton Count is 108
Logistic-Regression: Positive Accuracy is 52.0%
Logistic-Regression: Negative Accuracy is 69.0%
Logistic-Regression: Total Accuracy is 52.0%
Logistic-Regression: Positive, Up,   effectiveness is -0.03176551724137935%
Logistic-Regression: Long-only effectiveness is -0.1404782608695652%
Logistic-Regression: Negative, Down, effectiveness is -0.2864351851851852%

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