This paper proposes a novel cargo loading algorithm applicable to automated conveyor-type loading systems.The algorithm offers improvements in computational efficiency and robustness by utilizing the concept of discre...This paper proposes a novel cargo loading algorithm applicable to automated conveyor-type loading systems.The algorithm offers improvements in computational efficiency and robustness by utilizing the concept of discrete derivatives and introducing logistics-related constraints.Optional consideration of the rotation of the cargoes was made to further enhance the optimality of the solutions,if possible to be physically implemented.Evaluation metrics were developed for accurate evaluation and enhancement of the algorithm’s ability to efficiently utilize the loading space and provide a high level of dynamic stability.Experimental results demonstrate the extensive robustness of the proposed algorithm to the diversity of cargoes present in Business-to-Consumer environments.This study contributes practical advancements in both cargo loading optimization and automation of the logistics industry,with potential applications in last-mile delivery services,warehousing,and supply chain management.展开更多
Machine learning algorithms are an important measure with which to perform landslide susceptibility assessments, but most studies use GIS-based classification methods to conduct susceptibility zonation.This study pres...Machine learning algorithms are an important measure with which to perform landslide susceptibility assessments, but most studies use GIS-based classification methods to conduct susceptibility zonation.This study presents a machine learning approach based on the C5.0 decision tree(DT) model and the K-means cluster algorithm to produce a regional landslide susceptibility map. Yanchang County, a typical landslide-prone area located in northwestern China, was taken as the area of interest to introduce the proposed application procedure. A landslide inventory containing 82 landslides was prepared and subsequently randomly partitioned into two subsets: training data(70% landslide pixels) and validation data(30% landslide pixels). Fourteen landslide influencing factors were considered in the input dataset and were used to calculate the landslide occurrence probability based on the C5.0 decision tree model.Susceptibility zonation was implemented according to the cut-off values calculated by the K-means cluster algorithm. The validation results of the model performance analysis showed that the AUC(area under the receiver operating characteristic(ROC) curve) of the proposed model was the highest, reaching 0.88,compared with traditional models(support vector machine(SVM) = 0.85, Bayesian network(BN) = 0.81,frequency ratio(FR) = 0.75, weight of evidence(WOE) = 0.76). The landslide frequency ratio and frequency density of the high susceptibility zones were 6.76/km^(2) and 0.88/km^(2), respectively, which were much higher than those of the low susceptibility zones. The top 20% interval of landslide occurrence probability contained 89% of the historical landslides but only accounted for 10.3% of the total area.Our results indicate that the distribution of high susceptibility zones was more focused without containing more " stable" pixels. Therefore, the obtained susceptibility map is suitable for application to landslide risk management practices.展开更多
Based on the data of daily precipitation in Lianyungang area from 1951 to 2012 and various climate signal data from the National Climate Center website and the NOAA website,a model for predicting whether the number of...Based on the data of daily precipitation in Lianyungang area from 1951 to 2012 and various climate signal data from the National Climate Center website and the NOAA website,a model for predicting whether the number of rainstorm days in summer in Lianyungang area is large was established by the classical C5. 0 decision tree algorithm. The data samples in 48 years( accounting for about 80% of total number of samples)was as the training set of a model,and the training accuracy rate of the model was 95. 83%. The data samples in the remaining 14 years( accounting for about 20% of total number of samples) were used as the test set of the model to test the model,and the test accuracy of the model was 85. 71%. The results showed that the prediction model of number of rainstorm days in summer constructed by C5. 0 algorithm had high accuracy and was easy to explain. Moreover,it is convenient for meteorological staff to use directly. At the same time,this study provides a new idea for short-term climate prediction of number of rainstorm days in summer.展开更多
针对新能源电力系统中源荷不确定性导致的系统调度灵活性严重不足问题,文中提出了一种考虑源荷不确定性的电力系统两阶段鲁棒优化模型。根据源荷不确定性特征,结合K-means法和鲁棒优化理论,在多时间尺度对电力系统灵活性需求进行量化。...针对新能源电力系统中源荷不确定性导致的系统调度灵活性严重不足问题,文中提出了一种考虑源荷不确定性的电力系统两阶段鲁棒优化模型。根据源荷不确定性特征,结合K-means法和鲁棒优化理论,在多时间尺度对电力系统灵活性需求进行量化。首先,建立日前鲁棒调度模型,充分挖掘火电机组、抽水蓄能等资源的灵活调节潜力,将火电灵活改造及抽水蓄能抽发状态作为模型的第一阶段决策变量,各灵活资源的出力作为第二阶段决策变量,并以灵活改造成本、碳排放成本及运行成本最小为优化目标。其次,在模型求解中,将所建立的两阶段鲁棒模型转化为相对独立的主问题和子问题,并采用列与约束生成(column and constraint generation,C&CG)算法和强对偶理论反复迭代,以逼近最优解。最后,通过算例验证,所提出的优化调度策略在满足灵活性需求的基础上,统筹各类资源,实现了系统中经济性、环保性、灵活性的均衡,并增强了对源荷不确定性风险的抵御能力。展开更多
探讨如何将“AI for Science”化为“Decision Intelligence for Decision Science(DI4DS)”,使人工智能和智能科技成为变革传统指挥控制科学与技术的新动力并成为确保军事力量和国防安全的新科技。主要围绕决策智能理念、方法、技术的...探讨如何将“AI for Science”化为“Decision Intelligence for Decision Science(DI4DS)”,使人工智能和智能科技成为变革传统指挥控制科学与技术的新动力并成为确保军事力量和国防安全的新科技。主要围绕决策智能理念、方法、技术的历史演化以及ISDOS、EMS、计算机会议、决策剧场、平行剧场的历史进程,讨论决策5.0和平行决策智能及相关交互数字剧场等新人工智能技术在未来C++ISR的作用与意义。展开更多
基金supported by the BK21 FOUR funded by the Ministry of Education of Korea and National Research Foundation of Korea,a Korea Agency for Infrastructure Technology Advancement(KAIA)grant funded by the Ministry of Land,Infrastructure,and Transport(Grant 1615013176)IITP(Institute of Information&Coummunications Technology Planning&Evaluation)-ICAN(ICT Challenge and Advanced Network of HRD)grant funded by the Korea government(Ministry of Science and ICT)(RS-2024-00438411).
文摘This paper proposes a novel cargo loading algorithm applicable to automated conveyor-type loading systems.The algorithm offers improvements in computational efficiency and robustness by utilizing the concept of discrete derivatives and introducing logistics-related constraints.Optional consideration of the rotation of the cargoes was made to further enhance the optimality of the solutions,if possible to be physically implemented.Evaluation metrics were developed for accurate evaluation and enhancement of the algorithm’s ability to efficiently utilize the loading space and provide a high level of dynamic stability.Experimental results demonstrate the extensive robustness of the proposed algorithm to the diversity of cargoes present in Business-to-Consumer environments.This study contributes practical advancements in both cargo loading optimization and automation of the logistics industry,with potential applications in last-mile delivery services,warehousing,and supply chain management.
基金This research is funded by the National Natural Science Foundation of China(Grant Nos.41807285 and 51679117)Key Project of the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(SKLGP2019Z002)+3 种基金the National Science Foundation of Jiangxi Province,China(20192BAB216034)the China Postdoctoral Science Foundation(2019M652287 and 2020T130274)the Jiangxi Provincial Postdoctoral Science Foundation(2019KY08)Fundamental Research Funds for National Universities,China University of Geosciences(Wuhan)。
文摘Machine learning algorithms are an important measure with which to perform landslide susceptibility assessments, but most studies use GIS-based classification methods to conduct susceptibility zonation.This study presents a machine learning approach based on the C5.0 decision tree(DT) model and the K-means cluster algorithm to produce a regional landslide susceptibility map. Yanchang County, a typical landslide-prone area located in northwestern China, was taken as the area of interest to introduce the proposed application procedure. A landslide inventory containing 82 landslides was prepared and subsequently randomly partitioned into two subsets: training data(70% landslide pixels) and validation data(30% landslide pixels). Fourteen landslide influencing factors were considered in the input dataset and were used to calculate the landslide occurrence probability based on the C5.0 decision tree model.Susceptibility zonation was implemented according to the cut-off values calculated by the K-means cluster algorithm. The validation results of the model performance analysis showed that the AUC(area under the receiver operating characteristic(ROC) curve) of the proposed model was the highest, reaching 0.88,compared with traditional models(support vector machine(SVM) = 0.85, Bayesian network(BN) = 0.81,frequency ratio(FR) = 0.75, weight of evidence(WOE) = 0.76). The landslide frequency ratio and frequency density of the high susceptibility zones were 6.76/km^(2) and 0.88/km^(2), respectively, which were much higher than those of the low susceptibility zones. The top 20% interval of landslide occurrence probability contained 89% of the historical landslides but only accounted for 10.3% of the total area.Our results indicate that the distribution of high susceptibility zones was more focused without containing more " stable" pixels. Therefore, the obtained susceptibility map is suitable for application to landslide risk management practices.
基金Support by Meteorological Open Research Foundation for the Huaihe River Basin(HRM201602)Foundation for Young Scholars of Jiangsu Meteorological Bureau(Q201708,KQ201802)+2 种基金Science and Technology Innovation Team Foundation for Marine Meteorological Forecast Technology of Lianyungang Meteorological BureauKey Technology R&D Program Project of Lianyungang City(SH1634)Special Project for Forecasters of Jiangsu Meteorological Bureau(JSYBY201811,JSYBY201812,JSYBY201810)
文摘Based on the data of daily precipitation in Lianyungang area from 1951 to 2012 and various climate signal data from the National Climate Center website and the NOAA website,a model for predicting whether the number of rainstorm days in summer in Lianyungang area is large was established by the classical C5. 0 decision tree algorithm. The data samples in 48 years( accounting for about 80% of total number of samples)was as the training set of a model,and the training accuracy rate of the model was 95. 83%. The data samples in the remaining 14 years( accounting for about 20% of total number of samples) were used as the test set of the model to test the model,and the test accuracy of the model was 85. 71%. The results showed that the prediction model of number of rainstorm days in summer constructed by C5. 0 algorithm had high accuracy and was easy to explain. Moreover,it is convenient for meteorological staff to use directly. At the same time,this study provides a new idea for short-term climate prediction of number of rainstorm days in summer.
文摘针对新能源电力系统中源荷不确定性导致的系统调度灵活性严重不足问题,文中提出了一种考虑源荷不确定性的电力系统两阶段鲁棒优化模型。根据源荷不确定性特征,结合K-means法和鲁棒优化理论,在多时间尺度对电力系统灵活性需求进行量化。首先,建立日前鲁棒调度模型,充分挖掘火电机组、抽水蓄能等资源的灵活调节潜力,将火电灵活改造及抽水蓄能抽发状态作为模型的第一阶段决策变量,各灵活资源的出力作为第二阶段决策变量,并以灵活改造成本、碳排放成本及运行成本最小为优化目标。其次,在模型求解中,将所建立的两阶段鲁棒模型转化为相对独立的主问题和子问题,并采用列与约束生成(column and constraint generation,C&CG)算法和强对偶理论反复迭代,以逼近最优解。最后,通过算例验证,所提出的优化调度策略在满足灵活性需求的基础上,统筹各类资源,实现了系统中经济性、环保性、灵活性的均衡,并增强了对源荷不确定性风险的抵御能力。
文摘探讨如何将“AI for Science”化为“Decision Intelligence for Decision Science(DI4DS)”,使人工智能和智能科技成为变革传统指挥控制科学与技术的新动力并成为确保军事力量和国防安全的新科技。主要围绕决策智能理念、方法、技术的历史演化以及ISDOS、EMS、计算机会议、决策剧场、平行剧场的历史进程,讨论决策5.0和平行决策智能及相关交互数字剧场等新人工智能技术在未来C++ISR的作用与意义。
