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Backtest 1983 (S & P 500)

For 1983:
Naive-Bayes: Positive, Up,   Prediction Count is 136
Naive-Bayes: Negative, Down, Prediciton Count is 117
Naive-Bayes: Total Accuracy is 47.0%
Naive-Bayes: Positive, Up,   effectiveness is 0.019659420289855022%
Naive-Bayes: Long-only effectiveness is 0.07081027667984194%
Naive-Bayes: Negative, Down, effectiveness is 0.13219130434782606%
For 1983:
Logistic-Regression: Positive, Up,   Prediction Count is 126
Logistic-Regression: Negative, Down, Prediciton Count is 127
Logistic-Regression: Positive Accuracy is 53.0%
Logistic-Regression: Negative Accuracy is 53.0%
Logistic-Regression: Total Accuracy is 49.0%
Logistic-Regression: Positive, Up,   effectiveness is -0.0033515625000000234%
Logistic-Regression: Long-only effectiveness is 0.07081027667984194%
Logistic-Regression: Negative, Down, effectiveness is 0.14675200000000008%

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