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|a eng
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|a Kan, Meina
|e verfasserin
|4 aut
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|a Learning prototype hyperplanes for face verification in the wild
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|c 2013
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|a Date Completed 08.01.2014
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|a Date Revised 15.07.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a In this paper, we propose a new scheme called Prototype Hyperplane Learning (PHL) for face verification in the wild using only weakly labeled training samples (i.e., we only know whether each pair of samples are from the same class or different classes without knowing the class label of each sample) by leveraging a large number of unlabeled samples in a generic data set. Our scheme represents each sample in the weakly labeled data set as a mid-level feature with each entry as the corresponding decision value from the classification hyperplane (referred to as the prototype hyperplane) of one Support Vector Machine (SVM) model, in which a sparse set of support vectors is selected from the unlabeled generic data set based on the learnt combination coefficients. To learn the optimal prototype hyperplanes for the extraction of mid-level features, we propose a Fisher’s Linear Discriminant-like (FLD-like) objective function by maximizing the discriminability on the weakly labeled data set with a constraint enforcing sparsity on the combination coefficients of each SVM model, which is solved by using an alternating optimization method. Then, we use the recent work called Side-Information based Linear Discriminant (SILD) analysis for dimensionality reduction and a cosine similarity measure for final face verification. Comprehensive experiments on two data sets, Labeled Faces in the Wild (LFW) and YouTube Faces, demonstrate the effectiveness of our scheme
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|a Letter
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|a Research Support, Non-U.S. Gov't
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|a Xu, Dong
|e verfasserin
|4 aut
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| 700 |
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|a Shan, Shiguang
|e verfasserin
|4 aut
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| 700 |
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|a Li, Wen
|e verfasserin
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| 700 |
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|a Chen, Xilin
|e verfasserin
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|t IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
|d 1992
|g 22(2013), 8 vom: 13. Aug., Seite 3310-6
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|g year:2013
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|g month:08
|g pages:3310-6
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