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A sample migration method, device and equipment

A technology in samples and samples, applied in the information field, can solve problems such as different environments, difficult data training, and establishment of effective risk control models for risk prevention and control, and achieve the effect of improving reliability.

Active Publication Date: 2021-06-29
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For example, third-party payment is already very mature in China, but when it is necessary to carry out business in a foreign country, although the business scenarios are similar, the environment is different. It is difficult to train local data and establish effective risk control models and strategies for risk prevention and control

Method used

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  • A sample migration method, device and equipment
  • A sample migration method, device and equipment
  • A sample migration method, device and equipment

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Embodiment Construction

[0028] In order for those skilled in the art to better understand the technical solutions in the embodiments of this specification, the technical solutions in the embodiments of this specification will be described in detail below in conjunction with the drawings in the embodiments of this specification. Obviously, the described implementation Examples are only some of the embodiments in this specification, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this specification shall fall within the scope of protection.

[0029] First, some concepts involved in the embodiments of this specification are explained:

[0030] Source domain: Refers to the source business field that can be used as a sample migration, such as the mature third-party payment field in China, which is popular in this field, with a large number of samples, and the trained model is mature and reliable.

[0031] Source samples: Applied to sampl...

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Abstract

Disclosed are a sample migration method, device and equipment. Through the scheme provided by the embodiment of this specification, extract the source samples in the source domain where the business has matured, and a small number of target domain samples in the target domain, compare the same features and different features respectively, and perform high-dimensional mapping for the same features After adaptation, different features are complemented to obtain corrected source samples and target domain samples, and combined to obtain a fusion sample set that can be used in the target domain.

Description

technical field [0001] The embodiments of this specification relate to the field of information technology, and in particular to a sample migration method, device, and equipment. Background technique [0002] The establishment of a risk control model cannot bypass the model training phase, which requires a certain period of business data accumulation and marking data. In practical applications, it is often encountered in a certain environment to develop some mature businesses from scratch. [0003] For example, third-party payment is already very mature in China, but when it is necessary to carry out business in a foreign country, although the business scenarios are similar, the environment is different. It is difficult to train local data and establish effective risk control models and strategies for risk prevention and control. [0004] Based on this, a reliable sample migration scheme is needed. Contents of the invention [0005] The purpose of the embodiment of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q20/08G06K9/62
CPCG06Q20/0855G06F18/251G06F18/214
Inventor 王骏陈弢
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD