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		    Transductive Matrix Completion with Calibration for Multi-Task Learning

- Citation Author(s):
 - Submitted by:
 - Hengfang Wang
 - Last updated:
 - 30 May 2023 - 3:34am
 - Document Type:
 - Demo
 - Document Year:
 - 2023
 - Event:
 - Presenters:
 - Zhonglei Wang
 
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Multi-task learning has attracted much attention due to growing multi-purpose research with multiple related data sources. Moreover, transduction with matrix completion is a useful method in multi-label learning. In this paper, we propose a transductive matrix completion algorithm that incorporates a calibration constraint for the features under the multi-task learning framework. The proposed algorithm recovers the incomplete feature matrix and target matrix simultaneously. Fortunately, the calibration information improves the completion results. In particular, we provide a statistical guarantee for the proposed algorithm, and the theoretical improvement induced by calibration information is also studied. Moreover, the proposed algorithm enjoys a sub-linear convergence rate. Several synthetic data experiments are conducted, which show the proposed algorithm out-performs other existing methods, especially when the target matrix is associated with the feature matrix in a nonlinear way.