Compression-based AODE Classifiers
نویسندگان
چکیده
We propose the COMP-AODE classifier, which adopts the compression-based approach [1] to average the posterior probabilities computed by different non-naive classifiers (SPODEs). COMP-AODE improves classification performance over the wellknown AODE [10] model. COMP-AODE assumes a uniform prior over the SPODEs; we then develop the credal classifier COMPAODE*, substituting the uniform prior by a set of priors. COMPAODE* returns more classes when the classification is priordependent, namely if the most probable class varies with the prior adopted over the SPODEs. COMP-AODE* achieves higher classification utility than both COMP-AODE and AODE.
منابع مشابه
Credal Classification based on AODE and compression coefficients
Bayesian model averaging (BMA) is a common approach to average over alternative models; yet, it usually gets excessively concentrated around the single most probable model, therefore achieving only sub-optimal classification performance. The compression-based approach (Boullé, 2007) overcomes this problem; it averages over the different models by applying a logarithmic smoothing over the models...
متن کاملNon-Disjoint Discretization for Aggregating One-Dependence Estimator Classifiers
There is still lack of clarity about the best manner in which to handle numeric attributes when applying Bayesian network classifiers. Discretization methods entail an unavoidable loss of information. Nonetheless, a number of studies have shown that appropriate discretization can outperform straightforward use of common, but often unrealistic parametric distribution (e.g. Gaussian). Previous st...
متن کاملSelecting One Dependency Estimators in Bayesian Network Using Different MDL Scores and Overfitting Criterion
The Averaged One Dependency Estimator (AODE) is integrated all possible Super-Parent-One-Dependency Estimators (SPODEs) and estimates class conditional probabilities by averaging them. In an AODE network some redundant SPODEs maybe result in some bias of classifiers, as a consequence, it could reduce the classification accuracy substantially. In this paper, a kind of MDL metrics is used to sele...
متن کاملAveraged Extended Tree Augmented Naive Classifier
This work presents a new general purpose classifier named Averaged Extended Tree Augmented Naive Bayes (AETAN), which is based on combining the advantageous characteristics of Extended Tree Augmented Naive Bayes (ETAN) and Averaged One-Dependence Estimator (AODE) classifiers. We describe the main properties of the approach and algorithms for learning it, along with an analysis of its computatio...
متن کاملAttribute Value Weighted Average of One-Dependence Estimators
Of numerous proposals to improve the accuracy of naive Bayes by weakening its attribute independence assumption, semi-naive Bayesian classifiers which utilize one-dependence estimators (ODEs) have been shown to be able to approximate the ground-truth attribute dependencies; meanwhile, the probability estimation in ODEs is effective, thus leading to excellent performance. In previous studies, OD...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2012