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dc.contributor.authorKalal, Zdenek
dc.contributor.authorMatas, Jiří
dc.contributor.authorMikolajczyk, Krystian
dc.date.accessioned2012-06-12T13:33:22Z
dc.date.available2012-06-12T13:33:22Z
dc.date.issued2010-06
dc.identifier.citationZdenek Kalal, Jirí Matas, and Krystian Mikolajczyk. P-n learning: Bootstrapping binary classifiers by structural constraints. In CVPR 2010: Proceedings of the 2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, pages 49-56, Madison, USA, June 2010. Omnipress.cze
dc.identifier.urihttp://hdl.handle.net/10467/9552
dc.description.abstractThis paper shows that the performance of a binary classifier can be significantly improved by the processing of structured unlabeled data, i.e. data are structured if knowing the label of one example restricts the labeling of the others. We propose a novel paradigm for training a binary classifier from labeled and unlabeled examples that we call P-N learning. The learning process is guided by positive (P) and negative (N) constraints which restrict the labeling of the unlabeled set. P-N learning evaluates the classifier on the unlabeled data, identifies examples that have been classified in contradiction with structural constraints and augments the training set with the corrected samples in an iterative process. We propose a theory that formulates the conditions under which P-N learning guarantees improvement of the initial classifier and validate it on synthetic and real data. P-N learning is applied to the problem of on-line learning of object detector during tracking. We show that an accurate object detector can be learned from a single example and an unlabeled video sequence where the object may occur. The algorithm is compared with related approaches and state-of-the-art is achieved on a variety of objects (faces, pedestrians, cars, motorbikes and animals).eng
dc.language.isocescze
dc.publisherIEEEcze
dc.rights© 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.eng
dc.titleP-N Learning: Bootstrapping Binary Classifiers by Structural Constraintscze
dc.typepříspěvek z konference - elektronickýcze
dc.identifier.doi10.1109/CVPR.2010.5540231


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