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Uncertainty in Artificial Intelligence (UAI 2008)

Multi-View Learning in the Presence of View Disagreement

author: C. Mario Christoudias, Linguistics and Philosophy, MIT - Massachusetts Institute of Technology

Description

Traditional multi-view learning approaches suffer in the presence of view disagreement, i.e., when samples in each view do not belong to the same class due to view corruption, occlusion or other noise processes. In this paper we present a multi-view learning approach that uses a conditional entropy criterion to detect view disagreement. Once detected, samples with view disagreement are filtered and standard multi-view learning methods can be successfully applied to the remaining samples. Experimental evaluation on synthetic and audio-visual databases demonstrates that the detection and filtering of view disagreement considerably increases the performance of traditional multi-view learning approaches.

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Slides
0:00 Multi-View Learning in the Presence of View Disagreement
0:19 The World is Multi-View
1:05 Learning from Multiple Information Sources
1:24 Dealing with Noise - 1
1:51 Dealing with Noise - 2
2:16 View Disagreement
2:56 Our Approach
3:10 Related Work
4:09 Multi-View Bootstrapping
4:32 Bootstrapping One View from the Other - 1
5:15 Bootstrapping One View from the Other - 2
5:25 Bootstrapping One View from the Other - 3
5:30 Co-Training
5:59 Co-Training Algorithm - 1
6:11 Co-Training Algorithm - 2
6:17 Co-Training Algorithm - 3
6:25 Co-Training Algorithm - 4
6:26 Co-Training Algorithm - 5
6:28 Co-Training Algorithm - 6
6:29 Co-Training Algorithm - 7
6:30 Co-Training Algorithm - 8
6:39 View Disagreement Example: Normally Distributed Classes
7:43 Conventional Co-Training under View Disagreement
8:51 Our Approach: Key Assumption
9:16 Our Approach: Notional Example
10:23 Conditional Entropy Measure
11:20 Redundant Sample Detection
11:53 View Disagreement Detection
12:14 Co-Training in the Presence of View Disagreement - 1
12:44 Co-Training in the Presence of View Disagreement - 2
12:50 Co-Training in the Presence of View Disagreement - 3
12:52 Co-Training in the Presence of View Disagreement - 4
12:59 Co-Training in the Presence of View Disagreement - 5
13:01 Co-Training in the Presence of View Disagreement - 6
13:02 Co-Training in the Presence of View Disagreement - 7
13:04 Co-Training in the Presence of View Disagreement - 8
13:05 Co-Training in the Presence of View Disagreement - 9
13:15 Co-Training in the Presence of View Disagreement - 10
13:16 Co-Training in the Presence of View Disagreement - 11
13:26 Normally Distributed Classes: Results
13:49 Real Data
14:25 Experimental Setup
14:59 Cross-View Bootstrapping Experiment
15:59 Co-Training Experiment
17:10 - Questions

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