Semisupervised Laplace-Regularized Multimodality Metric Learning

doi:10.1109/TCYB.2020.3022277

Semisupervised Laplace-Regularized Multimodality Metric Learning

2022-05-01

5

PRE

AI

DOI：10.1109/TCYB.2020.3022277

Original

Original request for help

Save

Abstract

En 中文

Distance metric learning, which aims at learning an appropriate metric from data automatically, plays a crucial role in the fields of pattern recognition and information retrieval. A tremendous amount of work has been devoted to metric learning in recent years, but much of the work is basically designed for training a linear and global metric with labeled samples. When data are represented with multimodal and high-dimensional features and only limited supervision information is available, these approaches are inevitably confronted with a series of critical problems: 1) naive concatenation of feature vectors can cause the curse of dimensionality in learning metrics and 2) ignorance of utilizing massive unlabeled data may lead to overfitting. To mitigate this deficiency, we develop a semisupervised Laplace-regularized multimodal metric-learning method in this work, which explores a joint formulation of multiple metrics as well as weights for learning appropriate distances: 1) it learns a global optimal distance metric on each feature space and 2) it searches the optimal combination weights of multiple features. Experimental results demonstrate both the effectiveness and efficiency of our method on retrieval and classification tasks.

Keywords:

Measurement

Task analysis

Kernel

Dimensionality reduction

Symmetric matrices

Cybernetics

Laplace regularized

metric learning

multimodal

semisupervised

Semisupervised Laplace-Regularized Multimodality Metric Learning

Abstract

AI Summary

Journal

Organization