For 1981:
Naive-Bayes: Positive, Up, Prediction Count is 108
Naive-Bayes: Negative, Down, Prediciton Count is 145
Naive-Bayes: Total Accuracy is 51.0%
Naive-Bayes: Positive, Up, effectiveness is -0.015203703703703695%
Naive-Bayes: Long-only effectiveness is -0.03795256916996047%
Naive-Bayes: Negative, Down, effectiveness is -0.05489655172413797%
For 1981:
Logistic-Regression: Positive, Up, Prediction Count is 117
Logistic-Regression: Negative, Down, Prediciton Count is 136
Logistic-Regression: Positive Accuracy is 54.0%
Logistic-Regression: Negative Accuracy is 46.0%
Logistic-Regression: Total Accuracy is 56.0%
Logistic-Regression: Positive, Up, effectiveness is 0.09585470085470087%
Logistic-Regression: Long-only effectiveness is -0.03795256916996047%
Logistic-Regression: Negative, Down, effectiveness is -0.1530661764705883%