Journal of Computer Applications ›› 2024, Vol. 44 ›› Issue (10): 3167-3176.DOI: 10.11772/j.issn.1001-9081.2023101460

• Computer software technology • Previous Articles     Next Articles

Predictive business process monitoring method based on concept drift

Hua HUANG1, Ziyi YANG1, Xiaolong LI1,2(), Chuang LI1   

  1. 1.School of Computer Science,Hunan University of Technology and Business,Changsha Hunan 410205,China
    2.Key Laboratory in Hunan Province Higher Education Institutions of Intelligence Sensing and Distributed Collaborative Optimization of Internet of Things (Hunan University of Technology and Business),Changsha Hunan 410205,China
  • Received:2023-10-27 Revised:2023-12-05 Accepted:2023-12-15 Online:2024-10-15 Published:2024-10-10
  • Contact: Xiaolong LI
  • About author:HUANG Hua, born in 1981, Ph.D., associate professor. His research interests include cloud computing, service computing, artificial intelligence, blockchain.
    YANG Ziyi, born in 1999, M. S. candidate. Her research interests include business process monitoring, service computing, process mining.
    LI Chuang, born in 1990, Ph. D., associate professor. His research interests include high-performance computing, parallel computing.
  • Supported by:
    Young Project of National Natural Science Foundation of China(62002115);Natural Science Foundation of Hunan Province(2023JJ50319);Natural Science Foundation of Hunan for Youth(2022JJ40128);Science and Technology Program of Hunan Province(2021NK2020);Scientific Research Fund of Hunan Province Education Department(21B0560);Xiangjiang Laboratory Major Project(23XJ01001);Outstanding Innovative Youth Training Program of Changsha(kq2107020);Science and Technology Innovation Team Support Program of Hunan Provincial General Higher Education Institutions

基于概念漂移的预测性业务流程监控方法

黄华1, 杨子仪1, 李小龙1,2(), 李闯1   

  1. 1.湖南工商大学 计算机学院, 长沙 410205
    2.物联网智能感知与分布式协同优化湖南省高等学校重点实验室(湖南工商大学), 长沙 410205
  • 通讯作者: 李小龙
  • 作者简介:黄华(1981—),男,湖南衡阳人,副教授,博士,CCF会员,主要研究方向:云计算、服务计算、人工智能、区块链
    杨子仪(1999—),女,湖南岳阳人,硕士研究生,CCF会员,主要研究方向:业务流程监控、服务计算、流程挖掘
    李小龙(1981—),男,湖南常德人,教授,博士,CCF会员,主要研究方向:物联网 lxl@hutb.edu.cn
    李闯(1990—),男,湖南益阳人,副教授,博士,CCF会员,主要研究方向:高性能计算、并行计算。
  • 基金资助:
    国家自然科学基金青年科学基金资助项目(62002115);湖南省自然科学基金资助项目(2023JJ50319);湖南省自然科学基金青年项目(2022JJ40128);湖南省重点研发科技计划项目(2021NK2020);湖南省教育厅科学研究项目(21B0560);湘江实验室重大项目(23XJ01001);长沙市杰出创新青年培养计划项目(kq2107020);湖南省普通高等学校科技创新团队支持项目

Abstract:

A Predictive business Process Monitoring (PPM) method based on concept drift was proposed to solve the problems of model accuracy decreasing over time and poor real-time performance in existing Business Process Monitoring (BPM) methods. Firstly, the event log data was preprocessed and encoded. Secondly, a Bidirectional Long Short-Term Memory (Bi-LSTM) network model was used to capture enough sequence information from both forward and backward directions in order to build the business process model. At the same time, the attention mechanism was utilized to fully consider the contributions of different events to the model’s prediction results, and assign different weights to event logs to reduce the influence of noise on the prediction results. Finally, the executing instances were input into the constructed model to obtain the predicted execution results, and the results were used as historical data to fine-tune the model. By testing on 8 publicly available and real datasets, the results show that the proposed method has an average prediction accuracy improvement of 5.4%-23.8% compared to existing BPM methods such as Support Vector Machine (SVM), Logistic Regression (LR), and Random Forest (RF), and the proposed method also outperforms existing research methods in terms of earliness and timeliness.

Key words: concept drift, Predictive business Process Monitoring (PPM), Business Process Management (BPM), event log, Bidirectional Long Short-Term Memory (Bi-LSTM), attention mechanism

摘要:

为解决现有的业务流程监控(BPM)方法的模型精度随时间下降和实时性较差的问题,提出一种基于概念漂移的预测性业务流程监控(PPM)方法。首先,对事件日志数据进行预处理及编码;其次,利用双向长短时记忆(Bi-LSTM)网络模型从前后方向捕获足够的序列信息以构建业务流程模型,并利用注意力机制充分考虑不同事件对预测结果的贡献程度,赋予事件日志不同的权重,从而减少噪声对预测结果的影响;最后,将正在执行的实例输入构建的模型,得到预测的执行结果,并将这些结果作为历史数据对模型微调。在8个公开且真实的数据集上的测试结果表明,所提方法的平均预测准确率相较于支持向量机(SVM)、逻辑回归(LR)和随机森林(RF)等已有的BPM方法提升了5.4%~23.8%,且早期性和时间性能都优于现有的研究方法。

关键词: 概念漂移, 预测性业务流程监控, 业务流程管理, 事件日志, 双向长短时记忆, 注意力机制

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