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Feature extraction method and device

A feature extraction and feature data technology, which is applied in special data processing applications, instruments, calculations, etc., can solve the problems of not being able to extract known data with good reducibility and non-negativity, and not being able to characterize user behavior characteristics well.

Active Publication Date: 2014-04-02
CHONGQING ZHONGKE YUNCONG TECH CO LTD
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Problems solved by technology

[0007] The embodiment of the present application provides a method and device for feature extraction to solve the problems in the prior art that cannot extract user behaviors that can guarantee good reducibility and non-negativity of known data, and cannot well represent user behavior rules. The technical problem of characteristics has achieved the technical effect of extracting user behavior characteristics that can guarantee good reduction and non-negativity of known data and can well represent user behavior rules

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  • Feature extraction method and device
  • Feature extraction method and device

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Embodiment 1

[0042] In the first embodiment, a feature extraction method is provided, which is applied to an electronic device, where the electronic device can be a desktop computer, a notebook computer, a tablet computer, or a mobile phone. In this embodiment of the application, , I will not give examples one by one here. Please refer to figure 1 , The feature extraction method in the embodiment of this application specifically includes:

[0043] SA1, the electronic device receives user-item historical behavior statistical data collected from the server.

[0044] After step SA1, the method of the embodiment of the present application proceeds to step SA2, that is, storing the statistical data in the storage module.

[0045] In the example of this application, the electronic device receives the user-project historical behavior statistical data collected by the server, and selects an appropriate storage method according to the current data stored in the storage module of the device, and stores th...

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Abstract

The invention discloses a feature extraction method and a feature extraction device, which are applied in electronic equipment. The method comprises the steps: receiving user-project history behavior statistic data acquired by a server, through the electronic equipment; storing the statistic data into a storage module; and carrying out non-negative behavior feature extraction on the user-project history behavior statistic data, to obtain feature extraction data. According to the feature extraction method and device, the feature extraction data are stored in the storage module, the technical problems that user behavior features which can guarantee the excellent reductive property and non-negativity of the known data and well represent the user behavior rules cannot be extracted in the prior art can be solved, and the technical effects that the user behavior features which can guarantee the excellent reductive property and non-negativity of the known data and well represent the user behavior rules can be extracted can be realized.

Description

Technical field [0001] The invention relates to the field of computer data processing, in particular to a method and device for feature extraction in a big data environment. Background technique [0002] Modern large-scale information systems, especially commercial systems that operate successfully, such as large-scale e-commerce systems, search systems, and social network service systems, have a huge number of users and information. In this type of system, various objective historical behaviors of users, such as clicking, browsing, commenting, searching, etc., will be aggregated into a huge user historical behavior data set with the accumulation of system operation time, and the amount of data is at least TB Level, forming a typical big data environment. In this type of environment, a typical data description method is to use a user-item historical behavior statistical matrix. Each row in the matrix corresponds to a specific user; each column corresponds to a specific item, whe...

Claims

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Application Information

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IPC IPC(8): G06Q30/02G06F17/30
Inventor 罗辛夏云霓陈鹏吴磊
Owner CHONGQING ZHONGKE YUNCONG TECH CO LTD
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