Method and system for generating combined features of machine learning sample

A technology of combining features and machine learning, applied in the field of artificial intelligence to achieve the effect of improving the effect and effective automatic feature combination

Inactive Publication Date: 2018-04-13
THE FOURTH PARADIGM BEIJING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The exemplary embodiment of the present invention aims to overcome the defect that it is difficult to automatically combine the features of machine learning samples in the prior art

Method used

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  • Method and system for generating combined features of machine learning sample
  • Method and system for generating combined features of machine learning sample
  • Method and system for generating combined features of machine learning sample

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Embodiment Construction

[0034] In order to enable those skilled in the art to better understand the present invention, the exemplary embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] In an exemplary embodiment of the present invention, the automatic feature combination is performed in the following manner: based on the attribute information of the data records, features that can be combined are generated, and according to the heuristic search strategy, the extended search is performed stage by stage to generate candidate combination features , where a part of the target features are selected in each stage to form the features of the machine learning samples, where the target features can be used as the basis for expanding the search.

[0036] Here, machine learning is an inevitable product of the development of artificial intelligence research to a certain stage. It is dedicated to ...

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Abstract

The invention provides a method and system for generating combined features of a machine learning sample. The method comprises the steps of (A) acquiring a historical data record, wherein the historical data record comprises multiple pieces of attribute information; and (B) performing feature combination stage by stage on at least one feature generated on the basis of the multiple pieces of attribute information according to a heuristic search strategy so as to generate candidate combined features, wherein a target combined feature is selected from a candidate combined feature set to serve asa combined feature of the machine learning sample in allusion to each stage. According to the method and system, generation of the candidate combined features and selection of the target combined features are accomplished stage by stage through the heuristic search strategy, so that automatic feature combination is effectively realized under the condition of using fewer computation resources, andthe effect of a machine learning model is improved.

Description

technical field [0001] The present invention generally relates to the field of artificial intelligence, and more specifically, relates to a method and system for generating combined features of machine learning samples. Background technique [0002] With the emergence of massive data, artificial intelligence technology has developed rapidly, and in order to mine value from large amounts of data, it is necessary to generate samples suitable for machine learning based on data records. [0003] Here, each data record can be regarded as a description about an event or object, corresponding to an instance or sample. In a data record are included items that reflect some aspect or nature of an event or object, which may be called "attributes". [0004] How to transform each attribute of the original data record into the characteristics of the machine learning sample will have a great impact on the effect of the machine learning model. In fact, the prediction effect of the machine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06N99/00
CPCG06N20/00G06F18/2113
Inventor 陈雨强杨强戴文渊罗远飞涂威威
Owner THE FOURTH PARADIGM BEIJING TECH CO LTD
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