Combining labeled and unlabeled data with co-training
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Shape Matching and Object Recognition Using Shape Contexts
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Scale & Affine Invariant Interest Point Detectors
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Beyond pairwise shape similarity analysis
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Exploiting contextual spaces for image re-ranking and rank aggregation
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Image re-ranking and rank aggregation based on similarity of ranked lists
CAIP'11 Proceedings of the 14th international conference on Computer analysis of images and patterns - Volume Part I
Shape matching and classification using height functions
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Shape matching and recognition using group-wised points
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A perceptually motivated morphological strategy for shape retrieval
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Exploiting pairwise recommendation and clustering strategies for image re-ranking
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Perceptually motivated morphological strategies for shape retrieval
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Densifying Distance Spaces for Shape and Image Retrieval
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Image re-ranking and rank aggregation based on similarity of ranked lists
Pattern Recognition
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Using contextual spaces for image re-ranking and rank aggregation
Multimedia Tools and Applications
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In this paper, we propose a new shape/object retrieval algorithm, co-transduction. The performance of a retrieval system is critically decided by the accuracy of adopted similarity measures (distances or metrics). Different types of measures may focus on different aspects of the objects: e.g. measures computed based on contours and skeletons are often complementary to each other. Our goal is to develop an algorithm to fuse different similarity measures for robust shape retrieval through a semi-supervised learning framework. We name our method co-transduction which is inspired by the co-training algorithm [1]. Given two similarity measures and a query shape, the algorithm iteratively retrieves the most similar shapes using one measure and assigns them to a pool for the other measure to do a re-ranking, and vice-versa. Using co-transduction, we achieved a significantly improved result of 97.72% on the MPEG-7 dataset [2] over the state-of-the-art performances (91% in [3], 93.4% in [4]). Our algorithm is general and it works directly on any given similarity measures/metrics; it is not limited to object shape retrieval and can be applied to other tasks for ranking/retrieval.