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New Regularized Algorithms for Transducitve Learning

author: Partha Pratim Talukdar, Computer & Information Science Department, University of Pennsylvania

Description

We propose a new graph-based label propagation algorithm for transductive learning. Each example is associated with a vertex in an undirected graph and a weighted edge between two vertices represents similarity between the two corresponding example. We build on Adsorption, a recently proposed algorithm and analyze its properties. We then state our learning algorithm as a convex optimization problem over multi-label assignments and derive an efficient algorithm to solve this problem. We state the conditions under which our algorithm is guaranteed to converge. We provide experimental evidence on various real-world datasets demonstrating the effectiveness of our algorithm over other algorithms for such problems. We also show that our algorithm can be extended to incorporate additional prior information, and demonstrate it with classifying data where the labels are not mutually exclusive.

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Slides
0:00 New Regularized Algorithms for Transductive Learning
2:24 Graph-based Semi-Supervised Learning
3:47 Graph-based Semi-Supervised Learning (1)
4:01 Graph-based Semi-Supervised Learning (2)
4:22 Graph-based Semi-Supervised Learning (3)
4:51 Graph-based Semi-Supervised Learning (4)
5:36 Adsorption Algorithm
6:08 Adsorption Algorithm (1)
6:15 Adsorption Algorithm (2)
6:24 Adsorption Algorithm (3)
6:37 Adsorption Algorithm (4)
6:43 Adsorption Algorithm (5)
7:35 Characteristics of Adsorption
7:40 Characteristics of Adsorption (1)
8:15 Characteristics of Adsorption (2)
9:15 Characteristics of Adsorption (3)
9:20 Characteristics of Adsorption (4)
10:30 Random Walk View
10:45 Random Walk View (1)
10:55 Random Walk View (2)
12:22 Discounting High-Degree Nodes
12:31 Discounting High-Degree Nodes (1)
12:48 Discounting High-Degree Nodes (2)
13:00 Discounting High-Degree Nodes (4)
13:22 Is Adsorption Optimizing an Objective?
13:26 Is Adsorption Optimizing an Objective? (1)
14:08 Is Adsorption Optimizing an Objective? (2)
14:16 Is Adsorption Optimizing an Objective? (3)
14:25 Modified Adsorption (MAD)
14:33 Modified Adsorption (MAD) (1)
14:40 Modified Adsorption (MAD) (2)
15:08 Modified Adsorption (MAD) (3)
15:52 Modified Adsorption (MAD) (4)
16:13 Extension to Dependent Labels
16:32 Extension to Dependent Labels (1)
17:08 Extension to Dependent Labels (2)
17:40 MAD with Dependent Labels (MADDL)
17:50 MAD with Dependent Labels (MADDL) (1)
18:24 MAD with Dependent Labels (MADDL) (2)
18:30 MAD with Dependent Labels (MADDL) (3)
18:34 MAD with Dependent Labels (MADDL) (4)
18:40 MAD with Dependent Labels (MADDL) (5)
18:55 Experimental Setup
19:04 Experimental Setup (1)
20:08 Experimental Setup (2)
20:17 PRBEP (macro-averaged) on WebKB Dataset, 3148 test instances
21:31 Precision on 3568 Sentiment test instances
22:21 II. Smooth Sentiment Ranking
23:08 II. Smooth Sentiment Ranking (1)
23:17 II. Smooth Sentiment Ranking (2)
23:25 II. Smooth Sentiment Ranking (3)
24:01 II. Smooth Sentiment Ranking (4)
25:21 II. Smooth Sentiment Ranking (5)
25:28 Conclusion
25:32 Conclusion (1)
26:05 Conclusion (2)
26:11 Conclusion (3)
26:17 Conclusion (4)
26:27 Thanks!

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