کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
530088 869740 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Semi-supervised metric learning via topology preserving multiple semi-supervised assumptions
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر چشم انداز کامپیوتر و تشخیص الگو
پیش نمایش صفحه اول مقاله
Semi-supervised metric learning via topology preserving multiple semi-supervised assumptions
چکیده انگلیسی

Learning an appropriate distance metric is a critical problem in pattern recognition. This paper addresses the problem of semi-supervised metric learning. We propose a new regularized semi-supervised metric learning (RSSML) method using local topology and triplet constraints. Our regularizer is designed and developed based on local topology, which is represented by local neighbors from the local smoothness, cluster (low density) and manifold information point of view. The regularizer is then combined with the large margin hinge loss on the triplet constraints. In other words, we keep a large margin between different labeled samples, and in the meanwhile, we use the unlabeled samples to regularize it. Then the semi-supervised metric learning method is developed. We have performed experiments on classification using publicly available databases to evaluate the proposed method. To our best knowledge, this is the only method satisfying all the three semi-supervised assumptions, namely smoothness, cluster (low density) and manifold. Experimental results have shown that the proposed method outperforms state-of-the-art semi-supervised distance metric learning algorithms.


► Our method satisfies all the three semi-supervised assumptions.
► Our topology representation incorporates density and manifold information.
► Samples in high-density region have much higher similarity than that in low density region.
► The similarity learned by our method enhances recognition accuracy in experiments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pattern Recognition - Volume 46, Issue 9, September 2013, Pages 2576–2587
نویسندگان
, , ,