Monitoring safety prediction method and system based on model optimization

A technology for safe prediction and optimization algorithms, applied in computational models, biological models, instruments, etc., can solve the problems of increasing the time complexity of the classification model and failing to improve the usability of the classification model, so as to speed up parameter optimization and improve the Model quality and reliability, the effect of strong reliability

Pending Publication Date: 2022-03-22
北京淇瑀信息科技有限公司
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AI Technical Summary

Problems solved by technology

Manual parameter tuning requires users to manually set and adjust the construction parameters required by the model, thus setting a high threshold for users. Based on existing parameter optimization methods, such as grid search, the construction of XGBoost classification model When parameters are optimized, the optimization method is often mainly based on the search space given by experience or exhaustive, which not only fails to improve the ease of use of the classification model but increases the time complexity of the classification model

Method used

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  • Monitoring safety prediction method and system based on model optimization
  • Monitoring safety prediction method and system based on model optimization
  • Monitoring safety prediction method and system based on model optimization

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Embodiment 1

[0045] figure 1 It is the main flow chart of an embodiment of the monitoring safety prediction method based on model optimization according to the present invention. In this embodiment, the optimization of XGBoost model based on CPSO is taken as an example, and the specific implementation process of the present invention is illustrated by optimizing the risk prediction of XGBoost based on CPSO. The following will combine figure 1 , 5 , 6 and 7 describe an embodiment of the method of the present invention. Among them, the method includes:

[0046] Step SS1, according to the collected data, obtain the data set provided for the constructed prediction model.

[0047] In one embodiment, various types of valuable information are obtained based on the monitoring of big data in actual business application scenarios and on the basis of user authorization. For example, it includes but is not limited to: basic user information, credit information, operator information, mobile phone ...

example 1

[0116] In this example, based on the monitoring of the real business data security of the loan assistance platform, through the analysis of indicators such as vintage and flow rate (FlowRate), it can be defined that the repayment performance in the three periods is overdue by 30+ (that is, MOB3 30+) for this modeling The target, the proportion of overdue samples is less than 5%. Moreover, this embodiment uses the CPSO-based optimized XGBoost model to accurately predict the borrower's credit risk, so that the online lending platform can provide risk control personnel with pre-lending decision support information during the borrower's loan process.

[0117] Step S1: It may be to collect data of users such as borrowers, preprocess the collected data, and select a certain amount of data from them as a data set for building a model.

[0118] In the data collection step S101, specifically, raw data for evaluating the borrower's credit risk may be collected.

[0119] Specifically, s...

Embodiment 2

[0166] Similarly, an embodiment of the corresponding model optimization-based monitoring safety prediction system corresponds to the method. like figure 2 According to the main structural block diagram of an embodiment of the system of the present invention, the system can mainly include:

[0167] The data set forming module 1 obtains the data set provided to the constructed prediction model according to the collected data; for specific functions, please refer to the specific processing and implementation process of step SS1, which will not be repeated here.

[0168] Model optimization module 2, based on the training set and test set formed by the data set, optimizes the parameters of the prediction model according to the chaotic particle swarm optimization algorithm, and determines the optimized prediction model; for specific functions, refer to the specific processing of step SS2 and its The implementation process will not be repeated here.

[0169] The model training mod...

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Abstract

The invention relates to the field of Internet information processing, and provides a monitoring safety prediction method and system based on a chaotic particle swarm optimization algorithm optimization prediction model, equipment and a medium aiming at the defects of high randomness, large calculation amount, low speed and low efficiency of a parameter adjustment method in an existing data safety monitoring model. A sample data set is divided into a plurality of training subsets and a test set, parameter optimization of a constructed prediction model algorithm is performed by using the plurality of groups of training subsets according to a chaos particle swarm optimization algorithm, and a plurality of groups of optimal parameters are acquired, so that a model with optimized parameters is trained and is utilized to complete prediction of monitoring data. The optimization process is added to the modeling process to achieve parameter optimization, model inaccuracy caused by randomness is avoided, the optimization process is improved in combination with the chaos thought, the parameter optimization effect is improved, the parameter optimization speed is increased to optimize model efficiency, model quality and reliability are guaranteed, and then data safety monitoring accuracy and judgment efficiency are improved.

Description

technical field [0001] The present invention relates to the technical field of data security processing, in particular to the field of big data classification and risk prediction processing, in particular to a method and system for monitoring security prediction based on model optimization. Background technique [0002] In the field of Internet big data and its data security, using integrated models such as XGBoost and LightGBM to predict and evaluate data security is playing an increasingly important role. However, in the process of big data and its security processing, various models are used When , the selection of different parameters often determines the performance of the model. The classic integrated model parameter tuning methods involve manual parameter tuning, grid search, random search, Bayesian search, and genetic algorithm tuning. Manual parameter tuning requires users to manually set and adjust the construction parameters required by the model, thus setting a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06N3/00
CPCG06Q10/0635G06N3/006
Inventor 沈赟朱维娜杨雪君
Owner 北京淇瑀信息科技有限公司
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