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《能源前沿(英文)》 2022年 第16卷 第2期 页码 277-291 doi: 10.1007/s11708-021-0731-6
关键词: sooting tendency yield sooting index Bayesian multiple kernel learning surrogate assessment surrogate formulation
A novel multimode process monitoring method integrating LDRSKM with Bayesian inference
Shi-jin REN,Yin LIANG,Xiang-jun ZHAO,Mao-yun YANG
《信息与电子工程前沿(英文)》 2015年 第16卷 第8期 页码 617-633 doi: 10.1631/FITEE.1400263
关键词: Multimode process monitoring Local discriminant regularized soft k-means clustering Kernel support vector data description Bayesian inference Tennessee Eastman process
Multiple fault separation and detection by joint subspace learning for the health assessment of wind
Zhaohui DU, Xuefeng CHEN, Han ZHANG, Yanyang ZI, Ruqiang YAN
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 333-347 doi: 10.1007/s11465-017-0435-0
The gearbox of a wind turbine (WT) has dominant failure rates and highest downtime loss among all WT subsystems. Thus, gearbox health assessment for maintenance cost reduction is of paramount importance. The concurrence of multiple faults in gearbox components is a common phenomenon due to fault induction mechanism. This problem should be considered before planning to replace the components of the WT gearbox. Therefore, the key fault patterns should be reliably identified from noisy observation data for the development of an effective maintenance strategy. However, most of the existing studies focusing on multiple fault diagnosis always suffer from inappropriate division of fault information in order to satisfy various rigorous decomposition principles or statistical assumptions, such as the smooth envelope principle of ensemble empirical mode decomposition and the mutual independence assumption of independent component analysis. Thus, this paper presents a joint subspace learning-based multiple fault detection (JSL-MFD) technique to construct different subspaces adaptively for different fault patterns. Its main advantage is its capability to learn multiple fault subspaces directly from the observation signal itself. It can also sparsely concentrate the feature information into a few dominant subspace coefficients. Furthermore, it can eliminate noise by simply performing coefficient shrinkage operations. Consequently, multiple fault patterns are reliably identified by utilizing the maximum fault information criterion. The superiority of JSL-MFD in multiple fault separation and detection is comprehensively investigated and verified by the analysis of a data set of a 750 kW WT gearbox. Results show that JSL-MFD is superior to a state-of-the-art technique in detecting hidden fault patterns and enhancing detection accuracy.
关键词: joint subspace learning multiple fault diagnosis sparse decomposition theory coupling feature separation wind turbine gearbox
Application of machine learning algorithms for the evaluation of seismic soil liquefaction potential
Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD, Wen-Jing GU
《结构与土木工程前沿(英文)》 2021年 第15卷 第2期 页码 490-505 doi: 10.1007/s11709-020-0669-5
关键词: seismic soil liquefaction Bayesian belief network cone penetration test parameter learning structural learning
Ke GUO, Xia-bi LIU, Lun-hao GUO, Zong-jie LI, Zeng-min GENG
《信息与电子工程前沿(英文)》 2018年 第19卷 第5期 页码 639-650 doi: 10.1631/FITEE.1700007
基于核稀疏表示的磁共振图像分析及其在脑肿瘤自动分割中的应用 None
Ji-jun TONG, Peng ZHANG, Yu-xiang WENG, Dan-hua ZHU
《信息与电子工程前沿(英文)》 2018年 第19卷 第4期 页码 471-480 doi: 10.1631/FITEE.1620342
关键词: 脑肿瘤分割;核方法;稀疏编码;字典学习
裂缝性储层数据驱动模型证伪与不确定性量化 Article
方军龄, 龚斌, Jef Caers
《工程(英文)》 2022年 第18卷 第11期 页码 116-128 doi: 10.1016/j.eng.2022.04.015
天然裂缝的许多特性是不确定的,如裂缝的空间分布、岩石物理特性和流体流动性能。贝叶斯定理提供了一个框架来量化地质建模和流动模拟的不确定性,从而支持储层物性预测。贝叶斯方法在裂缝性储层中的应用大多局限于合成案例。然而,在现场应用中,一个主要问题是贝叶斯先验是被证伪的,因为它不能预测油气藏的生产历史。在本文中,我们展示了如何利用全局敏感性分析(GSA)来确定先验被证伪的原因。然后,我们采用近似贝叶斯计算(ABC)方法,结合基于决策树的代理模型来拟合生产历史。我们将这两种方法应用于一个复杂的裂缝性油气藏,其中综合考虑了所有不确定因素,包括油层物理特性、岩石物理特性、流体特性、离散裂缝参数以及压力和渗透率的动态变化。我们成功地找出了证伪的几个原因。结果表明,我们提出的方法可以有效地量化裂缝性储层建模和流动模拟的不确定性。此外,关键参数的不确定性,如裂缝开度和断层传导率,得到了降低。
IN2CLOUD: A novel concept for collaborative management of big railway data
Jing LIN, Uday KUMAR
《工程管理前沿(英文)》 2017年 第4卷 第4期 页码 428-436 doi: 10.15302/J-FEM-2017048
关键词: railway intelligent asset management collaborative learning big data hybrid cloud Bayesian
Evaluation of liquefaction-induced lateral displacement using Bayesian belief networks
Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD
《结构与土木工程前沿(英文)》 2021年 第15卷 第1期 页码 80-98 doi: 10.1007/s11709-021-0682-3
关键词: Bayesian belief network seismically induced soil liquefaction interpretive structural modeling lateral displacement
Jing LI,Xiao-run LI,Li-jiao WANG,Liao-ying ZHAO
《信息与电子工程前沿(英文)》 2016年 第17卷 第3期 页码 250-257 doi: 10.1631/FITEE.1500244
关键词: Endmember extraction Modified Cholesky factorization Spatial pixel purity index (SPPI) New simplex growing algorithm (NSGA) Kernel new simplex growing algorithm (KNSGA)
A Bayesian modeling approach to bi-directional pedestrian flows in carnival events
S. Q. XIE, S. C. WONG, William H. K. LAM
《工程管理前沿(英文)》 2017年 第4卷 第4期 页码 483-489 doi: 10.15302/J-FEM-2017023
关键词: pedestrian flow model bi-directional interactions empirical studies Bayesian inference
Development of soft kernel durum wheat
Craig F. MORRIS
《农业科学与工程前沿(英文)》 2019年 第6卷 第3期 页码 273-278 doi: 10.15302/J-FASE-2019259
Kernel texture (grain hardness) is a fundamental and determining factor related to wheat ( spp.) milling, baking and flour utilization. There are three kernel texture classes in wheat: soft and hard hexaploid ( ), and very hard durum ( subsp. ). The genetic basis for these three classes lies with the Puroindoline genes. Phenotypically, the easiest means of quantifying kernel texture is with the Single Kernel Characterization System (SKCS), although other means are valid and can provide fundamental material properties. Typical SKCS values for soft wheat would be around 25 and for durum wheat≥80. Soft kernel durum wheat was created via homeologous recombination using the mutation, which facilitated the transfer of ca. 28 Mbp of 5DS that replaced ca. 21 Mbp of 5BS. The 5DS translocation contained a complete and intact locus and both puroindoline genes. Expression of the puroindoline genes in durum grain resulted in kernel texture and flour milling characteristics nearly identical to that of soft wheat, with high yields of break and straight-grade flours, which had small particle size and low starch damage. Dough water absorption was markedly reduced compared to durum flour and semolina. Dough was essentially unchanged and reflected the inherent gluten properties of the durum background. Pasta quality was essentially equal-to-or-better than pasta made from semolina. Agronomically, soft durum germplasm showed good potential with moderate grain yield and resistance to a number of fungal pathogens and insects. Future breeding efforts will no doubt further improve the quality and competitiveness of soft durum cultivars.
关键词: soft durum wheat grain hardness puroindolines milling baking pasta noodles
化学工程师的主动机器学习 Perspective
Yannick Ureel, Maarten R. Dobbelaere, Yi Ouyang, Kevin De Ras, Maarten K. Sabbe, Guy B. Marin, Kevin M. Van Geem
《工程(英文)》 2023年 第27卷 第8期 页码 23-30 doi: 10.1016/j.eng.2023.02.019
By combining machine learning with the design of experiments, thereby achieving so-called active machine learning, more efficient and cheaper research can be conducted. Machine learning algorithms are more flexible and are better than traditional design of experiment algorithms at investigating processes spanning all length scales of chemical engineering. While active machine learning algorithms are maturing, their applications are falling behind. In this article, three types of challenges presented by active machine learning—namely, convincing the experimental researcher, the flexibility of data creation, and the robustness of active machine learning algorithms—are identified, and ways to overcome them are discussed. A bright future lies ahead for active machine learning in chemical engineering, thanks to increasing automation and more efficient algorithms that can drive novel discoveries.
关键词: Active machine learning Active learning Bayesian optimization Chemical engineering Design of experiments
《环境科学与工程前沿(英文)》 2023年 第17卷 第7期 doi: 10.1007/s11783-023-1685-1
● A hydrodynamic-Bayesian inference model was developed for water pollution tracking.
关键词: Identification of pollution sources Water quality restoration Bayesian inference Hydrodynamic model Inverse problem
Xueying Lu, Kirk E. Jordan, Mary F. Wheeler, Edward O. Pyzer-Knapp, Matthew Benatan
《工程(英文)》 2022年 第18卷 第11期 页码 96-104 doi: 10.1016/j.eng.2022.06.011
We present a framework that couples a high-fidelity compositional reservoir simulator with Bayesian optimization (BO) for injection well scheduling optimization in geological carbon sequestration. This work represents one of the first at tempts to apply BO and high-fidelity physics models to geological carbon storage. The implicit parallel accurate reservoir simulator (IPARS) is utilized to accurately capture the underlying physical processes during CO2 sequestration. IPARS provides a framework for several flow and mechanics models and thus supports both stand-alone and coupled simulations. In this work, we use the compositional flow module to simulate the geological carbon storage process. The compositional flow model, which includes a hysteretic three-phase relative permeability model, accounts for three major CO2 trapping mechanisms: structural trapping, residual gas trapping, and solubility trapping. Furthermore, IPARS is coupled to the International Business Machines (IBM) Corporation Bayesian Optimization Accelerator (BOA) for parallel optimizations of CO2 injection strategies during field-scale CO2 sequestration. BO builds a probabilistic surrogate for the objective function using a Bayesian machine learning algorithm—the Gaussian process regression, and then uses an acquisition function that leverages the uncertainty in the surrogate to decide where to sample. The IBM BOA addresses the three weaknesses of standard BO that limits its scalability in that IBM BOA supports parallel (batch) executions, scales better for high-dimensional problems, and is more robust to initializations. We demonstrate these merits by applying the algorithm in the optimization of the CO2 injection schedule in the Cranfield site in Mississippi, USA, using field data. The optimized injection schedule achieves 16% more gas storage volume and 56% less water/surfactant usage compared with the baseline. The performance of BO is compared with that of a genetic algorithm (GA) and a covariance matrix adaptation (CMA)-evolution strategy (ES). The results demonstrate the superior performance of BO, in that it achieves a competitive objective function value with over 60% fewer forward model evaluations.
标题 作者 时间 类型 操作
An assessment of surrogate fuel using Bayesian multiple kernel learning model in sight of sooting tendency
期刊论文
A novel multimode process monitoring method integrating LDRSKM with Bayesian inference
Shi-jin REN,Yin LIANG,Xiang-jun ZHAO,Mao-yun YANG
期刊论文
Multiple fault separation and detection by joint subspace learning for the health assessment of wind
Zhaohui DU, Xuefeng CHEN, Han ZHANG, Yanyang ZI, Ruqiang YAN
期刊论文
Application of machine learning algorithms for the evaluation of seismic soil liquefaction potential
Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD, Wen-Jing GU
期刊论文
IN2CLOUD: A novel concept for collaborative management of big railway data
Jing LIN, Uday KUMAR
期刊论文
Evaluation of liquefaction-induced lateral displacement using Bayesian belief networks
Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD
期刊论文
Fast implementation of kernel simplex volume analysis based on modified Cholesky factorization for endmember
Jing LI,Xiao-run LI,Li-jiao WANG,Liao-ying ZHAO
期刊论文
A Bayesian modeling approach to bi-directional pedestrian flows in carnival events
S. Q. XIE, S. C. WONG, William H. K. LAM
期刊论文
化学工程师的主动机器学习
Yannick Ureel, Maarten R. Dobbelaere, Yi Ouyang, Kevin De Ras, Maarten K. Sabbe, Guy B. Marin, Kevin M. Van Geem
期刊论文
Identification of pollution sources in rivers using a hydrodynamic diffusion wave model and improved Bayesian-Markov
期刊论文