NDLI: Semi-Supervised Bi-Dictionary Learning for Image Classification With Smooth Representation-Based Label Propagation

Content Provider	IEEE Xplore Digital Library
Author	Jian, M. Jung, C.
Copyright Year	1999
Abstract	In this paper, we propose semi-supervised bi-dictionary learning for image classification with smooth representation-based label propagation (SRLP). Natural images contain complex contents of multiple objects with complicated background, clutter, and occlusions, which prevents image features from belonging to a specific category. Therefore, we employ reconstruction-based classification to implement discriminative dictionary learning in a probabilistic manner. We jointly learn a discriminative dictionary called anchor in the feature space and its corresponding soft label called anchor label in the label space, where the combination of anchor and anchor label is referred to as bi-dictionary. The learnt bi-dictionary is utilized to bridge the semantic gap in image classification. First, SRLP constructs smoothed reconstruction problems for bi-dictionary learning. Then, SRLP produces the reconstruction coefficients in the feature space over the anchor to infer soft labels of samples in the label space. Experimental results demonstrate that the proposed method is capable of learning a pair of discriminative dictionaries for image classification in the feature and label spaces and outperforms the-state-of-the-art reconstruction-based classification ones.
Sponsorship	IEEE Signal Processing Society IEEE Circuits and Systems Society IEEE Communications Society IEEE Computer Society
Starting Page	458
Ending Page	473
Page Count	16
File Size	2527335
File Format	PDF
ISSN	15209210
Volume Number	18
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dictionaries Image reconstruction Semantics Manifolds Collaboration Support vector machines Bridges image classification Semi-supervised dictionary learning semantic gap smooth representation label propagation
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Science Applications Media Technology

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