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Correction: Topp-Leone Cauchy Family of Distributions with Applications in Industrial Engineering 更正:Topp-Leone Cauchy 分布系列在工业工程中的应用
IF 1 Q3 Mathematics Pub Date : 2024-01-03 DOI: 10.1007/s44199-023-00069-1
Mintodê Nicodème Atchadé, Mahoulé Jude Bogninou, Aliou Moussa Djibril, Melchior N’bouké
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引用次数: 0
Topp-Leone Cauchy Family of Distributions with Applications in Industrial Engineering Topp-Leone Cauchy分布族及其在工业工程中的应用
Q3 Mathematics Pub Date : 2023-11-13 DOI: 10.1007/s44199-023-00066-4
Mintodê Nicodème Atchadé, Mahoulé Jude Bogninou, Aliou Moussa Djibril, Melchior N’bouké
Abstract The goal of this research is to create a new general family of Topp-Leone distributions called the Topp-Leone Cauchy Family (TLC), which is exceedingly versatile and results from a careful merging of the Topp-Leone and Cauchy distribution families. Some of the new family’s theoretical properties are investigated using specific results on stochastic functions, quantile functions and associated measures, generic moments, probability weighted moments, and Shannon entropy. A parametric statistical model is built from a specific member of the family. The maximum likelihood technique is used to estimate the model’s unknown parameters. Furthermore, to emphasize the new family’s practical potential, we applied our model to two real-world data sets and compared it to existing rival models.
本研究的目标是创建一个新的一般Topp-Leone分布族,称为Topp-Leone Cauchy family (TLC),它是非常通用的,是Topp-Leone和Cauchy分布族仔细合并的结果。利用随机函数、分位数函数和相关测度、一般矩、概率加权矩和香农熵的具体结果研究了新家族的一些理论性质。参数统计模型是由家族的特定成员构建的。利用极大似然技术对模型的未知参数进行估计。此外,为了强调新家族的实际潜力,我们将我们的模型应用于两个真实世界的数据集,并将其与现有的竞争对手模型进行比较。
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引用次数: 0
Zero to k Inflated Poisson Regression Models with Applications 0 ~ k膨胀泊松回归模型及其应用
Q3 Mathematics Pub Date : 2023-11-13 DOI: 10.1007/s44199-023-00067-3
Hadi Saboori, Mahdi Doostparast
Abstract In the count data set, the frequency of some points may occur more than expected under the standard data analysis models. Indeed, in many situations, the frequencies of zero and of some other points tend to be higher than those of the Poisson. Adapting existing models for analyzing inflated observations has been studied in the literature. A method for modeling the inflated data is the inflated distribution. In this paper, we extend this inflated distribution. Indeed, if inflations occur in three or more of the support point, then the previous models are not suitable. We propose a model based on zero, one, $$ldots ,$$ , and k inflated points with probabilities $$w_{0},w_1,ldots ,$$ w 0 , w 1 , , and $$w_{k},$$ w k , respectively. By choosing the appropriate values for the weights $$w_{0},ldots ,w_{k},$$ w 0 , , w k , various inflated distributions, such as the zero-inflated, zero–one-inflated, and zero– k -inflated distributions, are derived as special cases of the proposed model in this paper. Various illustrative examples and real data sets are analyzed using the obtained results.
摘要在计数数据集中,在标准数据分析模型下,某些点的出现频率可能会超出预期。的确,在许多情况下,零点和其他点的频率往往比泊松的频率高。已在文献中研究了适应现有模型来分析膨胀观测。对膨胀数据建模的一种方法是膨胀分布。在本文中,我们扩展了这个膨胀分布。事实上,如果通货膨胀出现在三个或更多的支撑点,那么以前的模型就不合适了。我们提出了一个基于0、1、$$ldots ,$$…和k个膨胀点的模型,分别具有$$w_{0},w_1,ldots ,$$ w 0、w 1、…和$$w_{k},$$ w k的概率。通过为权重$$w_{0},ldots ,w_{k},$$ w 0,…,w k选择合适的值,可以推导出各种膨胀分布,如0 -膨胀分布,0 - 1 -膨胀分布和0 - k -膨胀分布,作为本文提出的模型的特殊情况。利用所得结果对各种实例和实际数据集进行了分析。
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引用次数: 0
A Class of Estimators for Estimation of Population Mean Under Random Non-response in Two Phase Successive Sampling 两期连续抽样随机无响应下总体均值估计的一类估计量
Q3 Mathematics Pub Date : 2023-10-30 DOI: 10.1007/s44199-023-00065-5
Zeeshan Basit, Saadia Masood, Ishaq Bhatti
Abstract This paper presents some efficient classes of estimators of population mean on current occasion in the presence of random non-response under a two-phase successive sampling set-up. The suggested classes of estimators are proposed for simple random sampling under various situations of non-response. The properties of proposed estimators have been discussed up to first order of approximation. The efficiency of the presented estimators has been contrasted with the estimators for the complete response scenarios. Two real and two artificially generated data sets are used. The efficacy of the proposed classes of estimators over the existing estimators is checked theoretically and empirically. The numerical comparison supports the proposed estimators.
摘要本文给出了两期连续抽样条件下随机无响应情况下的几种有效的总体均值估计量。给出了各种无响应情况下简单随机抽样估计量的建议分类。讨论了所提估计量的性质,直到一阶逼近。将所提估计器的效率与完整响应情景下的估计器进行了对比。使用了两个真实数据集和两个人工生成的数据集。从理论上和经验上验证了所提出的估计量比现有估计量的有效性。数值比较支持所提出的估计。
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引用次数: 0
Predictive Estimation of Finite Population Mean in Case of Missing Data Under Two-phase Sampling 两阶段抽样下数据缺失情况下有限总体均值的预测估计
Q3 Mathematics Pub Date : 2023-10-19 DOI: 10.1007/s44199-023-00064-6
Lovleen Kumar Grover, Anchal Sharma
Abstract The present paper deals with the problem of estimation of finite population mean of study variable using two auxiliary variables in two-phase sampling scheme using predictive approach in case of missing values of the study variable and unknown population mean of first auxiliary variable. Four classes of such estimators have been proposed using this predictive approach. The expressions of bias and mean square errors are derived up to first order of approximation. The optimal values of the constants involved in the proposed classes of estimators have been obtained and thus minimum mean square errors of the proposed classes are obtained in this study. The empirical and graphical comparisons with regression type estimators (under single phase and double phase sampling scheme) and also among themselves have been made for evaluating the performance of the proposed classes for different choices of non-responding units. Five real data sets and three simulated data sets following normal distribution have been used to evaluate the performance of the proposed classes. Numerical findings confirm the theoretical results obtained regarding superiority of proposed classes of estimators over the conventional regression type estimators in terms of percent relative efficiencies.
摘要本文研究了在两阶段抽样方案中,在研究变量缺失且第一辅助变量总体均值未知的情况下,用预测方法估计研究变量使用两个辅助变量的有限总体均值的问题。使用这种预测方法提出了四类这样的估计器。偏差和均方误差的表达式一直推导到一阶近似。本文得到了所提估计类中所涉及的常数的最优值,从而得到了所提估计类的均方误差最小。与回归型估计器(在单相和双相抽样方案下)以及它们之间的经验和图形比较,已用于评估所建议类别对不同选择的无响应单元的性能。使用5个真实数据集和3个服从正态分布的模拟数据集来评估所提出的类的性能。数值结果证实了在相对效率百分比方面,所提出的估计类优于传统回归型估计类的理论结果。
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引用次数: 0
An AI-driven Predictive Model for Pancreatic Cancer Patients Using Extreme Gradient Boosting 基于极端梯度增强的胰腺癌患者ai预测模型
Q3 Mathematics Pub Date : 2023-09-11 DOI: 10.1007/s44199-023-00063-7
Aditya Chakraborty, Chris P. Tsokos
Abstract Pancreatic cancer is one of the deadliest carcinogenic diseases affecting people all over the world. The majority of patients are usually detected at Stage III or Stage IV, and the chances of survival are very low once detected at the late stages. This study focuses on building an efficient data-driven analytical predictive model based on the associated risk factors and identifying the most contributing factors influencing the survival times of patients diagnosed with pancreatic cancer using the XGBoost (eXtreme Gradient Boosting) algorithm. The grid-search mechanism was implemented to compute the optimum values of the hyper-parameters of the analytical model by minimizing the root mean square error (RMSE). The optimum hyperparameters of the final analytical model were selected by comparing the values with 243 competing models. To check the validity of the model, we compared the model’s performance with ten deep neural network models, grown sequentially with different activation functions and optimizers. We also constructed an ensemble model using Gradient Boosting Machine (GBM). The proposed XGBoost model outperformed all competing models we considered with regard to root mean square error (RMSE). After developing the model, the individual risk factors were ranked according to their individual contribution to the response predictions, which is extremely important for pancreatic research organizations to spend their resources on the risk factors causing/influencing the particular type of cancer. The three most influencing risk factors affecting the survival of pancreatic cancer patients were found to be the age of the patient, current BMI, and cigarette smoking years with contributing percentages of 35.5%, 24.3%, and 14.93%, respectively. The predictive model is approximately 96.42% accurate in predicting the survival times of the patients diagnosed with pancreatic cancer and performs excellently on test data. The analytical methodology of developing the model can be utilized for prediction purposes. It can be utilized to predict the time to death related to a specific type of cancer, given a set of numeric, and non-numeric features.
胰腺癌是危害人类健康的致癌性疾病之一。大多数患者通常在III期或IV期被发现,一旦在晚期被发现,生存的机会非常低。本研究的重点是基于相关危险因素构建高效的数据驱动分析预测模型,并利用XGBoost (eXtreme Gradient Boosting)算法识别影响胰腺癌患者生存时间的最大因素。采用网格搜索机制,通过最小化均方根误差(RMSE)来计算解析模型超参数的最优值。通过与243个竞争模型的数值比较,选择了最终解析模型的最优超参数。为了验证该模型的有效性,我们将该模型的性能与10个深度神经网络模型进行了比较,这些模型采用不同的激活函数和优化器顺序生长。我们还使用梯度增强机(Gradient Boosting Machine, GBM)构建了一个集成模型。提出的XGBoost模型在均方根误差(RMSE)方面优于我们考虑的所有竞争模型。在建立模型后,根据个体对反应预测的贡献对个体危险因素进行排名,这对于胰腺研究机构将资源用于研究导致/影响特定类型癌症的危险因素至关重要。影响胰腺癌患者生存的三个最主要危险因素是患者年龄、当前BMI和吸烟年限,贡献率分别为35.5%、24.3%和14.93%。该预测模型预测胰腺癌患者生存时间的准确率约为96.42%,在测试数据上表现出色。开发模型的分析方法可用于预测目的。给定一组数字和非数字特征,它可以用来预测与特定类型癌症相关的死亡时间。
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引用次数: 0
Smoothed Dirichlet Distribution 平滑狄利克雷分布
Q3 Mathematics Pub Date : 2023-09-11 DOI: 10.1007/s44199-023-00062-8
Lahiru Wickramasinghe, Alexandre Leblanc, Saman Muthukumarana
Abstract When the cells are ordinal in the multinomial distribution, i.e., when cells have a natural ordering, guaranteeing that the borrowing information among neighboring cells makes sense conceptually. In this paper, we introduce a novel probability distribution for borrowing information among neighboring cells in order to provide reliable estimates for cell probabilities. The proposed smoothed Dirichlet distribution forces the probabilities of neighboring cells to be closer to each other than under the standard Dirichlet distribution. Basic properties of the proposed distribution, including normalizing constant, moments, and marginal distributions, are developed. Sample generation of smoothed Dirichlet distribution is discussed using the acceptance-rejection algorithm. We demonstrate the performance of the proposed smoothed Dirichlet distribution using 2018 Major League Baseball (MLB) batters data.
摘要当细胞在多项分布中是有序的,即细胞具有自然的排序时,保证相邻细胞间的借用信息在概念上是有意义的。为了提供可靠的单元概率估计,本文引入了一种新的单元间借阅信息的概率分布。所提出的平滑狄利克雷分布迫使相邻单元的概率比在标准狄利克雷分布下更接近彼此。提出了该分布的基本性质,包括归一化常数、矩和边际分布。用接受-拒绝算法讨论了光滑狄利克雷分布的样本生成问题。我们使用2018年美国职业棒球大联盟(MLB)击球手数据验证了所提出的平滑狄利克雷分布的性能。
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引用次数: 1
Correction: Estimation of Reliability in Multicomponent Set-up when Stress and Strength are Non-identical 修正:应力和强度不相同时多构件装置可靠性的估计
Q3 Mathematics Pub Date : 2023-09-04 DOI: 10.1007/s44199-023-00061-9
Anupam Pathak, Anoop Chaturvedi, Taruna Kumari
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引用次数: 0
Estimation of Reliability in Multicomponent Set-up when Stress and Strength are Non-identical 应力与强度不相等时多构件装置可靠性的估计
IF 1 Q3 Mathematics Pub Date : 2023-07-24 DOI: 10.1007/s44199-023-00060-w
Anupam Pathak, A. Chaturvedi, T. Kumari
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引用次数: 0
Statistical Quality Control: Acceptance Sampling Plans in the Light of Fuzzy Mathematics 统计质量控制:基于模糊数学的验收抽样计划
IF 1 Q3 Mathematics Pub Date : 2023-07-22 DOI: 10.1007/s44199-023-00059-3
Surajit Bhattacharyya
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引用次数: 0
期刊
Journal of Statistical Theory and Applications
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