首页 > 最新文献

Pakistan Journal of Statistics and Operation Research最新文献

英文 中文
Integration of 4253HT Smoother with Intuitionistic Fuzzy Time Series Forecasting Model 4253HT平滑器与直觉模糊时间序列预测模型的集成
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-06 DOI: 10.18187/pjsor.v18i4.4212
N. Alam, N. Ramli, Adie Safian Ton Mohamed, Noor Izyan Mohamad Adnan
Fuzzy time series is widely used in forecasting time series data in linguistic forms. Implementing the intuitionistic fuzzy sets (IFS) in fuzzy time series can better handle uncertainties and vagueness in the time series data. However, the time series data always fluctuate randomly and cause drastic changes. In this study, the 4253HT smoother is integrated with the intuitionistic fuzzy time series forecasting model to improve the forecasting accuracy. The proposed model is implemented in predicting the Malaysian crude palm oil prices. The data are firstly smoothed, and followed with the fuzzification process. Next are the transformation of fuzzy sets into IFS and the de-i-fuzzification via equal distribution of hesitancy. The forecasted data are calculated based on the defuzzified values considering the new membership degrees of the IFS after de-i-fuzzification. The results show that the integrated model produces a better forecasting performance compared to the common intuitionistic fuzzy time series forecasting model. In the future, the integration of the data smoothing should be considered before the forecasting of data using fuzzy time series could be performed.
模糊时间序列在语言形式的时间序列数据预测中得到了广泛的应用。在模糊时间序列中实现直觉模糊集(IFS)可以更好地处理时间序列数据中的不确定性和模糊性。然而,时间序列数据总是随机波动,并引起剧烈变化。本研究将4253HT平滑器与直觉模糊时间序列预测模型相结合,以提高预测精度。将该模型应用于马来西亚棕榈油原油价格的预测。首先对数据进行平滑处理,然后进行模糊化处理。接下来是将模糊集转换为IFS,并通过犹豫的等分布进行去模糊化。考虑到去模糊后IFS的新隶属度,基于去模糊值来计算预测数据。结果表明,与常用的直觉模糊时间序列预测模型相比,该综合模型具有更好的预测性能。未来,在使用模糊时间序列进行数据预测之前,应考虑数据平滑的集成。
{"title":"Integration of 4253HT Smoother with Intuitionistic Fuzzy Time Series Forecasting Model","authors":"N. Alam, N. Ramli, Adie Safian Ton Mohamed, Noor Izyan Mohamad Adnan","doi":"10.18187/pjsor.v18i4.4212","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.4212","url":null,"abstract":"Fuzzy time series is widely used in forecasting time series data in linguistic forms. Implementing the intuitionistic fuzzy sets (IFS) in fuzzy time series can better handle uncertainties and vagueness in the time series data. However, the time series data always fluctuate randomly and cause drastic changes. In this study, the 4253HT smoother is integrated with the intuitionistic fuzzy time series forecasting model to improve the forecasting accuracy. The proposed model is implemented in predicting the Malaysian crude palm oil prices. The data are firstly smoothed, and followed with the fuzzification process. Next are the transformation of fuzzy sets into IFS and the de-i-fuzzification via equal distribution of hesitancy. The forecasted data are calculated based on the defuzzified values considering the new membership degrees of the IFS after de-i-fuzzification. The results show that the integrated model produces a better forecasting performance compared to the common intuitionistic fuzzy time series forecasting model. In the future, the integration of the data smoothing should be considered before the forecasting of data using fuzzy time series could be performed.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41572424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Amputated Life Testing for Weibull-Fréchet Percentiles: Single, Double and Multiple Group Sampling Inspection Plans with Applications 威布尔-法氏百分位数的截断寿命试验:单、双、多组抽样检验计划及其应用
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-06 DOI: 10.18187/pjsor.v18i4.4190
Basma J. Ahmed, C. Chesneau, M. M. Ali, H. Yousof
When a life test is terminated at a predetermined time to decide whether to accept or refuse the submitted batches, the types of group sampling inspection plans (single, two, and multiple-stages) are introduced. The tables in this study give the optimal number of groups for various confidence levels, examination limits, and values of the ratio of the determined experiment time to the fixed percentile life. At various quality levels, the operating characteristic functions and accompanying producer's risk are derived for various types of group sampling inspection plans. At the determined producer's risk, the optimal ratios of real percentile life to a fixed percentile life are obtained. Three case studies are provided to illustrate the processes described here. Comparisons of single-stage and iterative group sampling plans are introduced. The first, second, and third sample minimums must be used to guarantee that the product's stipulated mean and median lifetimes are reached at a certain degree of customer trust. The suggested sample plans' operational characteristic values and the producer's risk are given. In order to show how the suggested approaches based on the mean life span and median life span of the product may function in reality, certain real-world examples are examined.
当在预定时间终止寿命测试以决定是否接受或拒绝提交的批次时,引入了分组抽样检查计划的类型(单个、两个和多个阶段)。本研究中的表格给出了各种置信水平、检查极限以及确定的实验时间与固定百分位数寿命的比值的最佳组数。在不同的质量水平上,推导了各种类型的成组抽样检验计划的运行特征函数和伴随的生产者风险。在确定的生产者风险下,获得了实际百分寿命与固定百分寿命的最佳比率。提供了三个案例研究来说明这里描述的过程。介绍了单阶段和迭代群抽样方案的比较。必须使用第一个、第二个和第三个最小样本,以确保在一定程度的客户信任下达到产品规定的平均寿命和中值寿命。给出了建议的样本计划的运营特征值和生产商的风险。为了展示基于产品平均寿命和中值寿命的建议方法在现实中如何发挥作用,我们考察了一些真实世界的例子。
{"title":"Amputated Life Testing for Weibull-Fréchet Percentiles: Single, Double and Multiple Group Sampling Inspection Plans with Applications","authors":"Basma J. Ahmed, C. Chesneau, M. M. Ali, H. Yousof","doi":"10.18187/pjsor.v18i4.4190","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.4190","url":null,"abstract":"When a life test is terminated at a predetermined time to decide whether to accept or refuse the submitted batches, the types of group sampling inspection plans (single, two, and multiple-stages) are introduced. The tables in this study give the optimal number of groups for various confidence levels, examination limits, and values of the ratio of the determined experiment time to the fixed percentile life. At various quality levels, the operating characteristic functions and accompanying producer's risk are derived for various types of group sampling inspection plans. At the determined producer's risk, the optimal ratios of real percentile life to a fixed percentile life are obtained. Three case studies are provided to illustrate the processes described here. Comparisons of single-stage and iterative group sampling plans are introduced. The first, second, and third sample minimums must be used to guarantee that the product's stipulated mean and median lifetimes are reached at a certain degree of customer trust. The suggested sample plans' operational characteristic values and the producer's risk are given. In order to show how the suggested approaches based on the mean life span and median life span of the product may function in reality, certain real-world examples are examined.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43914024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
An Intelligent Hybrid Model Using Artificial Neural Networks and Particle Swarm Optimization Technique For Financial Crisis Prediction 基于人工神经网络和粒子群优化技术的金融危机预测智能混合模型
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-06 DOI: 10.18187/pjsor.v18i4.3927
Maryam Maryam, Dimas Aryo Anggoro, Muhibah Fata Tika, Fitri Cahya Kusumawati
Financial crisis prediction is a critical issue in the economic phenomenon. Correct predictions can provide the knowledge for stakeholders to make policies to preserve and increase economic stability. Several approaches for predicting the financial crisis have been developed. However, the classification model's performance and prediction accuracy, as well as legal data, are insufficient for usage in real applications. So that, an efficient prediction model is required for higher performance results. This paper adopts a novel two-hybrid intelligent prediction model using an Artificial Neural Network (ANN) for prediction and Particle Swarm Optimization (PSO) for optimization. At first, a PSO technique produces the hyperparameter value for ANN to fit the best architecture. They are weights and thresholds. Then, they are used to predict the performance of the given dataset.  In the end, ANN-PSO generates predictions value of crisis conditions. The proposed ANN-PSO model is implemented on time series data of economic conditions in Indonesia. Dataset was obtained from International Monetary Fund and the Indonesian Economic and Financial Statistics. Independent variable data using 13 potential indicators, namely imports, exports, trade exchange rates, foreign exchange reserves, the composite stock price index, real exchange rates, real deposit rates, bank deposits, loan and deposit interest rates, the difference between the real BI rate and the real FED rate, the M1, M2 multiplier, and the ratio of M2 to foreign exchange reserves. Meanwhile, the dependent variable uses the perfect signal value based on the Financial Pressure Index. A detailed statistical analysis of the dataset is also given by threshold value to convey crisis conditions. Experimental analysis shows that the proposed model is reliable based on the different evaluation criteria. The case studies show that the result for predictive data is basically consistent with the actual situation, which has greatly helped the prediction of a financial crisis.  
金融危机预测是经济现象中的一个关键问题。正确的预测可以为利益相关者制定政策以维护和增加经济稳定提供知识。已经开发了几种预测金融危机的方法。然而,分类模型的性能和预测精度以及法律数据不足以在实际应用中使用。因此,需要一个高效的预测模型来获得更高的性能结果。本文采用了一种新的双混合智能预测模型,采用人工神经网络(ANN)进行预测,粒子群优化(PSO)进行优化。首先,PSO技术为ANN产生超参数值,以拟合最佳架构。它们是权重和阈值。然后,它们被用来预测给定数据集的性能。最后,ANN-PSO生成危机条件的预测值。所提出的ANN-PSO模型是在印度尼西亚经济状况的时间序列数据上实现的。数据集来自国际货币基金组织和印度尼西亚经济和金融统计局。使用13个潜在指标的自变量数据,即进口、出口、贸易汇率、外汇储备、综合股价指数、实际汇率、实际存款利率、银行存款、贷款和存款利率、实际BI利率与实际美联储利率之差、M1、M2乘数以及M2与外汇储备之比。同时,因变量使用基于财务压力指数的完美信号值。还通过阈值对数据集进行了详细的统计分析,以传达危机情况。实验分析表明,基于不同的评价标准,该模型是可靠的。案例分析表明,预测数据的结果与实际情况基本一致,对金融危机的预测有很大帮助。
{"title":"An Intelligent Hybrid Model Using Artificial Neural Networks and Particle Swarm Optimization Technique For Financial Crisis Prediction","authors":"Maryam Maryam, Dimas Aryo Anggoro, Muhibah Fata Tika, Fitri Cahya Kusumawati","doi":"10.18187/pjsor.v18i4.3927","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.3927","url":null,"abstract":"Financial crisis prediction is a critical issue in the economic phenomenon. Correct predictions can provide the knowledge for stakeholders to make policies to preserve and increase economic stability. Several approaches for predicting the financial crisis have been developed. However, the classification model's performance and prediction accuracy, as well as legal data, are insufficient for usage in real applications. So that, an efficient prediction model is required for higher performance results. This paper adopts a novel two-hybrid intelligent prediction model using an Artificial Neural Network (ANN) for prediction and Particle Swarm Optimization (PSO) for optimization. At first, a PSO technique produces the hyperparameter value for ANN to fit the best architecture. They are weights and thresholds. Then, they are used to predict the performance of the given dataset.  In the end, ANN-PSO generates predictions value of crisis conditions. The proposed ANN-PSO model is implemented on time series data of economic conditions in Indonesia. Dataset was obtained from International Monetary Fund and the Indonesian Economic and Financial Statistics. Independent variable data using 13 potential indicators, namely imports, exports, trade exchange rates, foreign exchange reserves, the composite stock price index, real exchange rates, real deposit rates, bank deposits, loan and deposit interest rates, the difference between the real BI rate and the real FED rate, the M1, M2 multiplier, and the ratio of M2 to foreign exchange reserves. Meanwhile, the dependent variable uses the perfect signal value based on the Financial Pressure Index. A detailed statistical analysis of the dataset is also given by threshold value to convey crisis conditions. Experimental analysis shows that the proposed model is reliable based on the different evaluation criteria. The case studies show that the result for predictive data is basically consistent with the actual situation, which has greatly helped the prediction of a financial crisis.  ","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41462163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A New Weighted-Lindley Distribution: Properties, Classical and Bayesian Estimation with an Application 一种新的加权林德利分布:性质、经典估计和贝叶斯估计及其应用
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-06 DOI: 10.18187/pjsor.v18i4.4106
B. Hosseini, M. Afshari, M. Alizadeh, A. Afify
The choice of the most suitable statistical distribution for modeling data is very important. Generally, the new distributions are more flexible to model real data that present a high degree of skewness and kurtosis. In this paper, we define a new one-parameter lifetime distribution, so-called weighted-Lindley distribution. Some of its basic properties are investigated. Some classical and Bayesian methods of estimation have been used for estimating its parameter. The behavior of these estimators were investigated by a graphical simulation study. A real data set is analyzed to investigate the flexibility of the new weighted-Lindley distribution.
为建模数据选择最合适的统计分布是非常重要的。一般来说,新的分布更灵活地模拟具有高度偏度和峰度的真实数据。本文定义了一种新的单参数寿命分布,即加权林德利分布。研究了它的一些基本性质。一些经典的估计方法和贝叶斯估计方法被用来估计它的参数。通过图形模拟研究了这些估计器的行为。通过对一个实际数据集的分析,验证了新加权林德利分布的灵活性。
{"title":"A New Weighted-Lindley Distribution: Properties, Classical and Bayesian Estimation with an Application","authors":"B. Hosseini, M. Afshari, M. Alizadeh, A. Afify","doi":"10.18187/pjsor.v18i4.4106","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.4106","url":null,"abstract":"The choice of the most suitable statistical distribution for modeling data is very important. Generally, the new distributions are more flexible to model real data that present a high degree of skewness and kurtosis. In this paper, we define a new one-parameter lifetime distribution, so-called weighted-Lindley distribution. Some of its basic properties are investigated. Some classical and Bayesian methods of estimation have been used for estimating its parameter. The behavior of these estimators were investigated by a graphical simulation study. A real data set is analyzed to investigate the flexibility of the new weighted-Lindley distribution.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45687830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Bayesian Estimation of Transmuted Lomax Mixture Model with an Application to Type-I Censored Windshield Data 跨静音Lomax混合模型的Bayes估计及其在I型挡风玻璃数据中的应用
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-06 DOI: 10.18187/pjsor.v18i4.4059
Muntazir Mehdi, M. Aslam, N. Feroze
Transmuted distributions have been centered of focus for researchers recently due to their flexibility and applicability in statistics. However, the only few contributions have considered estimation for mixture of transmuted lifetime models especially under Bayesian methods has been explored more recently. We have considered the Bayesian estimation of transmuted Lomax mixture model (TLMM) for type-I censored samples. The Bayes estimates (BEs) for informative and non-informative priors. The BEs and posterior risks (PRs) are evaluated using four different loss functions (LFs), two symmetric and two asymmetric, namely the squared error loss function (SELF), precautionary loss function (PLF), weighted balance loss function (WBLF), and general entropy loss function (GELF). Simulations are run using Lindley Approximation method to compare the BEs under various sample sizes and censoring rates. The estimates under informative prior and GELF were found superior to their counterparts. The applicability of the proposed estimates has been illustrated using the analysis of a real data regarding type-I censored failure times of windshields airplanes.
变形分布由于其在统计学中的灵活性和适用性,近年来成为研究人员关注的焦点。然而,只有少数的贡献考虑了对混合变形寿命模型的估计,特别是在贝叶斯方法下的估计最近得到了更多的探索。我们考虑了转换Lomax混合模型(TLMM)对i型截尾样本的贝叶斯估计。有信息先验和无信息先验的贝叶斯估计。采用2对称和2非对称的4种不同损失函数(LFs),即误差平方损失函数(SELF)、预防损失函数(PLF)、加权平衡损失函数(WBLF)和一般熵损失函数(GELF)来评估BEs和后置风险(PRs)。用Lindley近似法进行了模拟,比较了不同样本量和滤波率下的BEs。在信息先验和全球环境经济指数下的估计被发现优于其对应的估计。通过对飞机挡风玻璃i型截尾失效时间的实际数据的分析,说明了所提出估计的适用性。
{"title":"Bayesian Estimation of Transmuted Lomax Mixture Model with an Application to Type-I Censored Windshield Data","authors":"Muntazir Mehdi, M. Aslam, N. Feroze","doi":"10.18187/pjsor.v18i4.4059","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.4059","url":null,"abstract":"Transmuted distributions have been centered of focus for researchers recently due to their flexibility and applicability in statistics. However, the only few contributions have considered estimation for mixture of transmuted lifetime models especially under Bayesian methods has been explored more recently. We have considered the Bayesian estimation of transmuted Lomax mixture model (TLMM) for type-I censored samples. The Bayes estimates (BEs) for informative and non-informative priors. The BEs and posterior risks (PRs) are evaluated using four different loss functions (LFs), two symmetric and two asymmetric, namely the squared error loss function (SELF), precautionary loss function (PLF), weighted balance loss function (WBLF), and general entropy loss function (GELF). Simulations are run using Lindley Approximation method to compare the BEs under various sample sizes and censoring rates. The estimates under informative prior and GELF were found superior to their counterparts. The applicability of the proposed estimates has been illustrated using the analysis of a real data regarding type-I censored failure times of windshields airplanes.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47060269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
f-divergence regression models for compositional data 成分数据的f-散度回归模型
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-05 DOI: 10.18187/pjsor.v18i4.3969
A. Alenazi
The paper considers the class of $f$-divergence regression models as alternatives to parametric regression models for compositional data. The special cases examined in this paper include the Jensen-Shannon, Kullback-Leibler, Hellinger, chi^2 and total variation divergence. Strong advantages of the proposed regression models are a) the absence of parametric assumptions and b) the ability to treat zero values (which commonly occur in practice) naturally. Extensive Monte Carlo simulation studies comparatively assess the performance of the models in terms of bias and an empirical evaluation using real data examining further aspects, such as predictive performance and computational cost. The results reveal that Kullback-Leibler and Jensen-Shannon divergence regression models exhibited high quality performance in multiple directions. Ultimately, penalised versions of the Kullback-Leibler divergence regression are introduced and illustrated using real data rendering this model the optimal model to utilise in practice.
本文考虑了一类$f$-散度回归模型作为成分数据的参数回归模型的替代方案。本文研究的特例包括Jensen Shannon、Kullback-Leibler、Hellinger、chi^2和总变异散度。所提出的回归模型的强大优势是a)没有参数假设,b)能够自然地处理零值(这在实践中常见)。广泛的蒙特卡洛模拟研究比较评估了模型在偏差方面的性能,并使用真实数据进行实证评估,进一步考察了预测性能和计算成本等方面。结果表明,Kullback-Leibler和Jensen-Shannon散度回归模型在多个方向上表现出高质量的性能。最后,引入了Kullback-Leibler散度回归的惩罚版本,并使用实际数据对其进行了说明,使该模型成为实践中使用的最佳模型。
{"title":"f-divergence regression models for compositional data","authors":"A. Alenazi","doi":"10.18187/pjsor.v18i4.3969","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.3969","url":null,"abstract":"The paper considers the class of $f$-divergence regression models as alternatives to parametric regression models for compositional data. The special cases examined in this paper include the Jensen-Shannon, Kullback-Leibler, Hellinger, chi^2 and total variation divergence. Strong advantages of the proposed regression models are a) the absence of parametric assumptions and b) the ability to treat zero values (which commonly occur in practice) naturally. Extensive Monte Carlo simulation studies comparatively assess the performance of the models in terms of bias and an empirical evaluation using real data examining further aspects, such as predictive performance and computational cost. The results reveal that Kullback-Leibler and Jensen-Shannon divergence regression models exhibited high quality performance in multiple directions. Ultimately, penalised versions of the Kullback-Leibler divergence regression are introduced and illustrated using real data rendering this model the optimal model to utilise in practice.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41360111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Double Burr Type XII Model: Censored and Uncensored Validation Using a New Nikulin-Rao-Robson Goodness-of-Fit Test with Bayesian and Non-Bayesian Estimation Methods 双毛刺型XII模型:用贝叶斯和非贝叶斯估计方法使用新的Nikulin-Rao-Robson拟合优度检验的删减和未删减验证
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-05 DOI: 10.18187/pjsor.v18i4.3600
M. Ibrahim, M. M. Ali, H. Goual, H. Yousof
After studying the mathematical properties of the Double Burr XII model, we present Bayesian and non-Bayesian estimation for its unknown parameters. Also, we constructed a new statistical test for goodness-of-fit in case of complete and censored samples. The modified test is developed based on the Nikulin-Rao-Robson statistic for validation. Simulations are performed for assessing the new test along with nine applications on real data.
在研究了Double-Burr-XII模型的数学性质后,我们对其未知参数提出了贝叶斯和非贝叶斯估计。此外,我们构造了一个新的统计检验,在完全和截尾样本的情况下拟合优度。修正测试是基于Nikulin-Rao-Robson统计数据开发的,用于验证。对新测试进行了模拟评估,并对实际数据进行了九次应用。
{"title":"The Double Burr Type XII Model: Censored and Uncensored Validation Using a New Nikulin-Rao-Robson Goodness-of-Fit Test with Bayesian and Non-Bayesian Estimation Methods","authors":"M. Ibrahim, M. M. Ali, H. Goual, H. Yousof","doi":"10.18187/pjsor.v18i4.3600","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.3600","url":null,"abstract":"After studying the mathematical properties of the Double Burr XII model, we present Bayesian and non-Bayesian estimation for its unknown parameters. Also, we constructed a new statistical test for goodness-of-fit in case of complete and censored samples. The modified test is developed based on the Nikulin-Rao-Robson statistic for validation. Simulations are performed for assessing the new test along with nine applications on real data.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48254989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bayesian bivariate spatial shared component model: mapping breast and cervical cancer mortality in Southern Brazil 贝叶斯双变量空间共享分量模型:绘制巴西南部癌症乳腺癌和宫颈癌死亡率
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-04 DOI: 10.18187/pjsor.v18i4.4095
E. Martinez, Diego Gafuri Silva, Larissa Intrebartoli Resende, Elisângela Aparecida da Silva Lizzi, J. Achcar
Spatial analysis techniques are used in the data analysis of ecological studies, which consider geographical areas as observation units. In this article, we propose a Bayesian bivariate spatial shared component model to mapping the breast and cervical cancer mortality in Southern Brazil, based on the models introduced by Knorr-Held and Best (2001) and Held et al. (2005). Markov Chain Monte Carlo (MCMC) methods were used to spatially smooth the standardized mortality ratios (SMR) for both diseases. Local Indicator of Spatial Association (LISA) was used to verify the existence of spatial clusters in specific geographical areas. This study was carried out using secondary data obtained from publicly available health information systems.
空间分析技术用于生态研究的数据分析,将地理区域视为观测单位。在这篇文章中,我们基于Knorr-Held和Best(2001)以及Held等人(2005)引入的模型,提出了一个贝叶斯双变量空间共享分量模型来绘制巴西南部乳腺癌和宫颈癌癌症死亡率。Markov Chain Monte Carlo(MCMC)方法用于对两种疾病的标准化死亡率(SMR)进行空间平滑。空间关联局部指标(LISA)用于验证特定地理区域中空间集群的存在。这项研究是利用从公共卫生信息系统获得的二次数据进行的。
{"title":"Bayesian bivariate spatial shared component model: mapping breast and cervical cancer mortality in Southern Brazil","authors":"E. Martinez, Diego Gafuri Silva, Larissa Intrebartoli Resende, Elisângela Aparecida da Silva Lizzi, J. Achcar","doi":"10.18187/pjsor.v18i4.4095","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.4095","url":null,"abstract":"Spatial analysis techniques are used in the data analysis of ecological studies, which consider geographical areas as observation units. In this article, we propose a Bayesian bivariate spatial shared component model to mapping the breast and cervical cancer mortality in Southern Brazil, based on the models introduced by Knorr-Held and Best (2001) and Held et al. (2005). Markov Chain Monte Carlo (MCMC) methods were used to spatially smooth the standardized mortality ratios (SMR) for both diseases. Local Indicator of Spatial Association (LISA) was used to verify the existence of spatial clusters in specific geographical areas. This study was carried out using secondary data obtained from publicly available health information systems.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42171702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Odd Lomax Generalized Exponential Distribution: Application to Engineering and COVID-19 data 奇Lomax广义指数分布:在工程和新冠肺炎数据中的应用
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-04 DOI: 10.18187/pjsor.v18i4.4149
L. Sapkota, Vijay Kumar
This paper proposes the 4-parameter odd Lomax generalized exponential distribution for the study of engineering and COVID-19 data. The statistical and mathematical properties of this distribution such as a linear representation of the probability density function, survival function, hazard rate function, moments, quantile function, order statistics, entropy, mean deviation, characteristic function, and average residual life function are established. The estimates of parameters of the proposed distribution are obtained using maximum likelihood estimation (MLE), Maximum product spacings (MPS), least-square estimation (LSE), and Cramer-Von-Mises estimation (CVME) methods. A Monte-Carlo simulation experiment is carried out to study the MLEs. The applicability of the proposed distribution is evaluated using two real datasets related to engineering and COVID-19. All the computational work was performed in R programming software.
本文提出了用于工程和新冠肺炎数据研究的四参数奇Lomax广义指数分布。建立了这种分布的统计和数学性质,如概率密度函数、生存函数、危险率函数、矩、分位数函数、阶统计量、熵、平均偏差、特征函数和平均剩余寿命函数的线性表示。使用最大似然估计(MLE)、最大乘积间距(MPS)、最小二乘估计(LSE)和克雷默-冯-米塞斯估计(CVME)方法来获得所提出分布的参数估计。对MLE进行了蒙特卡罗模拟实验研究。使用与工程和新冠肺炎相关的两个真实数据集来评估所提出的分布的适用性。所有的计算工作都是在R编程软件中完成的。
{"title":"Odd Lomax Generalized Exponential Distribution: Application to Engineering and COVID-19 data","authors":"L. Sapkota, Vijay Kumar","doi":"10.18187/pjsor.v18i4.4149","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.4149","url":null,"abstract":"This paper proposes the 4-parameter odd Lomax generalized exponential distribution for the study of engineering and COVID-19 data. The statistical and mathematical properties of this distribution such as a linear representation of the probability density function, survival function, hazard rate function, moments, quantile function, order statistics, entropy, mean deviation, characteristic function, and average residual life function are established. The estimates of parameters of the proposed distribution are obtained using maximum likelihood estimation (MLE), Maximum product spacings (MPS), least-square estimation (LSE), and Cramer-Von-Mises estimation (CVME) methods. A Monte-Carlo simulation experiment is carried out to study the MLEs. The applicability of the proposed distribution is evaluated using two real datasets related to engineering and COVID-19. All the computational work was performed in R programming software.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46058411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Characterizations of Fourteen (2021-2022) Proposed Discrete Distributions 十四个(2021-2022)拟议离散分布的特征
IF 1.5 Q3 STATISTICS & PROBABILITY Pub Date : 2022-12-04 DOI: 10.18187/pjsor.v18i4.4048
G. Hamedani, A. Roshani
As we mentioned in our previous works, sometimes in real life cases, it is very difficult to obtain samples from a continuous distribution. The observed values are generally discrete due to the fact that they are not measured in continuum. In some cases, it may be possible to measure the observations via a continuous scale, however, they may be recorded in a manner in which a discrete model seems more suitable. Consequently, the discrete models are appearing quite frequently in applied fields and have attracted the attention of many researchers. Characterizations of distributions are important to many researchers in the applied fields. An investigator will be vitally interested to know if their model fits the requirements of a particular distribution. To this end, one will depend on the characterizations of this distribution which provide conditions under which the underlying distribution is indeed that particular distribution. Here, we present certain characterizations of 14 recently introduced discrete distributions.
正如我们在之前的工作中提到的,有时在现实生活中,从连续分布中获得样本是非常困难的。观测值通常是离散的,因为它们不是连续测量的。在某些情况下,有可能通过连续尺度来测量观测值,然而,它们可能以一种离散模型似乎更合适的方式记录。因此,离散模型在应用领域中出现的频率很高,并引起了许多研究者的关注。分布的表征对许多应用领域的研究人员来说是很重要的。研究者非常想知道他们的模型是否符合特定分布的要求。为了达到这个目的,人们将依赖于这个分布的特征,这些特征提供了一些条件,在这些条件下,潜在的分布确实是那个特定的分布。在这里,我们给出了最近引入的14个离散分布的某些特征。
{"title":"Characterizations of Fourteen (2021-2022) Proposed Discrete Distributions","authors":"G. Hamedani, A. Roshani","doi":"10.18187/pjsor.v18i4.4048","DOIUrl":"https://doi.org/10.18187/pjsor.v18i4.4048","url":null,"abstract":"As we mentioned in our previous works, sometimes in real life cases, it is very difficult to obtain samples from a continuous distribution. The observed values are generally discrete due to the fact that they are not measured in continuum. In some cases, it may be possible to measure the observations via a continuous scale, however, they may be recorded in a manner in which a discrete model seems more suitable. Consequently, the discrete models are appearing quite frequently in applied fields and have attracted the attention of many researchers. \u0000Characterizations of distributions are important to many researchers in the applied fields. An investigator will be vitally interested to know if their model fits the requirements of a particular distribution. To this end, one will depend on the characterizations of this distribution which provide conditions under which the underlying distribution is indeed that particular distribution. Here, we present certain characterizations of 14 recently introduced discrete distributions.","PeriodicalId":19973,"journal":{"name":"Pakistan Journal of Statistics and Operation Research","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48665676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Pakistan Journal of Statistics and Operation Research
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1