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Keyword recommending method and system based on latent Dirichlet allocation (LDA) model

A recommendation method and recommendation system technology, applied in the field of keyword recommendation based on the latent Dirichlet allocation model, which can solve problems such as difficult keyword recommendation

Active Publication Date: 2016-06-15
ALIBABA (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, it is impossible to provide more targeted keyword recommendations for more subdivided texts in a certain industry. For example, it is possible to get more accurate keyword recommendations for sports-related topics, but it is difficult to get the second-level classification of sports cars. keyword recommendation

Method used

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  • Keyword recommending method and system based on latent Dirichlet allocation (LDA) model

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Embodiment Construction

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0030]Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0031] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have diff...

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Abstract

The invention provides a keyword recommending method and system based on a latent Dirichlet allocation (LDA) model. The keyword recommending method comprises basic LDA training and incremental LDA training. The basic LDA training aims at training texts, probability distribution of basic words to the theme and probability distribution of basic texts to the theme are obtained; the incremental LDA training aims at specific incremental seed words, an incremental LDA model of a training text matched with the incremental seed words is calculated, probability distribution of incremental words to the theme and probability distribution of incremental texts to the theme are obtained, and finally probability distribution of full words to the theme and probability distribution of full texts to the theme are formed. The correlation weight and the final correlation score of any two words in the full model are calculated, and one or more keywords the correlation score of which is highest is recommended. By employing the incremental training model, the theme clustering precision is greatly improved, the theme diversity is increased, and the quality of keywords in the theme is substantially improved.

Description

technical field [0001] The present invention relates to artificial intelligence technology, more specifically, to a keyword recommendation method and system based on a Latent Dirichlet Allocation (LDA) model. Background technique [0002] In search engines, the application of recommendations is a trend in the development of search engines, especially in the context of wireless search, the demand for recommendations is particularly important. Because in the case of wireless search, the cost of obtaining information is higher when the user has a smaller screen, and the user hopes that the machine can better understand the user's needs and provide similar recommendations while satisfying the current search query. query information, so it is especially important to cut into recommendations in search. [0003] In current search engines, there are roughly two types of usage scenarios for recommendations. One is to provide users with some personalized recommendations based on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06N20/00
CPCG06F16/335G06F16/951G06N20/00G06F16/00G06F16/3346G06F16/3347G06F40/242G06F40/30G06N7/01G06N5/04
Inventor 吴敬桐李天宁
Owner ALIBABA (CHINA) CO LTD
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