logit_rules.py 文件源码

def probabilities(rule_list, beta, test_data):
    """ 
    Predict probabilities of outcome according to the rule list.

    """
    X = test_data.covariate_matrix(rule_list)
    psi = np.dot(X,beta)
    probabilities = 1.0/(1.0+np.exp(-1.0*psi))
    return probabilities