Cross-media sorting method based on hidden space learning and two-way sorting learning

A technology of two-way ranking learning and latent space learning, which is applied in multimedia data retrieval, special data processing applications, instruments, etc., can solve the problems that keywords cannot objectively reflect image semantics, the amount of engineering is huge, and the retrieval performance of semantic gaps.

Inactive Publication Date: 2014-02-05
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

However, due to the huge number of existing images, the amount of engineering in the labeling process is huge, and because the labeling content will inevitably be affected by the subjective factors of the labeler, for the same image, different labelers may label different keywords, so Keywords often cannot objectively reflect all the semantics contained in the image
The content-based retrieval system does not need to annotate the image,

Method used

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  • Cross-media sorting method based on hidden space learning and two-way sorting learning
  • Cross-media sorting method based on hidden space learning and two-way sorting learning
  • Cross-media sorting method based on hidden space learning and two-way sorting learning

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Embodiment

[0059] In order to verify the effect of the present invention, about 2900 webpages were grabbed from the webpage of "Wikipedia-Daily One Picture", which were divided into 10 categories, and each webpage contained an image and several relevant description texts. Experiment with this data set. If both the image and the text belong to one of the 10 categories, the image and the text are considered to be related, otherwise they are not. The data set is divided into a training set and a test set, and the present invention performs training on the training set, and then independently evaluates on the test set. Carry out according to said step of the present invention for feature extraction, wherein after removing common words and uncommon words, text space is set to 5000 dimensions, and image space is set to 1000 dimensions. In order to objectively evaluate the performance of the algorithm of the present invention, the inventors use Mean Average Precision (MAP) to evaluate the pres...

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Abstract

The invention discloses a cross-media sorting method based on hidden space learning and two-way sorting learning. The method includes 1, centrally constructing sorting samples of text retrieval images and sorting samples of image retrieval texts into a training sample; 2, performing cross-media sorting learning based on the hidden space learning and the two-way sorting learning on the constructed training sample, and acquiring a multimedia semantic space and a cross-media sorting model; 3, using the learned cross-media sorting model to performing cross-media sorting. The method can be applied in the text retrieval images and the image retrieval texts, and modeling is performed on two retrieval directions simultaneously, the acquired semantic understanding capacity of a retrieval model is stronger, and retrieval accuracy is higher as compared with the method considering one-way sorting learning only.

Description

technical field [0001] The invention designs cross-media retrieval, and in particular relates to a cross-media sorting method based on latent space learning and bidirectional sorting learning. Background technique [0002] Images are a very common file type these days, and they have certain semantics. Generally speaking, an image is composed of individual pixels, and the computer cannot directly understand the semantic information contained in the image. With the development of multimedia technology and network technology, more and more images emerge. Retrieval technology can help users quickly find the content they are interested in in massive data, and has become an increasingly important field in computer application technology. The traditional retrieval technology, whether it is keyword-based retrieval or content-based retrieval, cannot well meet the needs of users who want to retrieve images with text or retrieve text with images. In keyword-based retrieval systems, ...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/334G06F16/40G06F16/583
Inventor 吴飞汤斯亮卢鑫炎邵健庄越挺
Owner ZHEJIANG UNIV
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