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International Conference on Machine Learning - Bonn 2005
Pascal

Efficient discriminative learning of Bayesian network classifier via Boosted Augmented Naive Bayes

author: Yushi Jing, Georgia Institute of Technology

Description

The use of Bayesian networks for classification problems has received significant recent attention. Although computationally efficient, the standard maximum likelihood learning method tends to be suboptimal due to the mismatch between its optimization criteria (data likelihood) and the actual goal for classification (label prediction). Recent approaches to optimizing the classification performance during parameter or structure learning show promise, but lack the favorable computational properties of maximum likelihood learning. In this paper we present the Boosted Augmented Naive Bayes (BAN) classifier. We show that a combination of discriminative data-weighting with generative training of intermediate models can yield a computationally efficient method for discriminative parameter learning and structure selection.

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Slides
0:00 Boosted Augmented Naive Bayes Efficient discriminative learning of Bayesian network classifiers
1:18 Contribution
2:21 Bayesian network
3:06 Parameter Learning
3:50 Model selection
5:28 Talk outline
6:06 Exponential Loss Function (ELF)
6:39 slide8
7:18 Results: 25 UCI datasets (BNB)
8:08 Results: 25 UCI datasets (BNB)
8:25 Evaluation of BNB
9:26 Structure Learning
10:19 Creating
10:47 Initial structure
11:10 Iteratively adding edges
11:38 Final BAN structure
12:00 Analysis of BAN
12:13 Computational complexity of BAN
13:03 Result (simulated dataset):
13:30 Results: (simulated dataset):
13:47 Results: (simulated dataset):
14:13 Results: 25 UCI datasets (BAN)
14:33 Results: BAN vs. Standard method
14:49 Results: BAN vs. Structure Learning
15:26 Results: BAN vs. ELR
15:50 Evaluation of BAN vs. BNB
16:44 Conclusion
17:12 Future Work

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