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Heart Attack Analysis and Prediction with Machine Learning Techniques 利用机器学习技术分析和预测心脏病发作
Pub Date : 2024-07-06 DOI: 10.34110/forecasting.1489839
Shuaib Jasim, İbrahim Onaran, Mustafa Al-asadi
This study explores the use of machine learning algorithms to analyze and predict heart attacks, focusing on genetics, lifestyle, medical history, and biometric factors. The data was analyzed using logistic regression, support vector machines, decision trees, and random forests. Support vector machines were found to be the most effective model for predicting heart attack risk, with a high accuracy rate and low error rate. The study highlights the potential of machine learning in assisting healthcare professionals and individuals in determining heart attack risk and taking preventive measures.
本研究探讨了如何利用机器学习算法来分析和预测心脏病发作,重点关注遗传学、生活方式、病史和生物统计学因素。使用逻辑回归、支持向量机、决策树和随机森林对数据进行了分析。结果发现,支持向量机是预测心脏病发作风险最有效的模型,准确率高,错误率低。这项研究强调了机器学习在协助医疗保健专业人员和个人确定心脏病发作风险并采取预防措施方面的潜力。
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引用次数: 0
Forecasting of Turkey's Hazelnut Export Amounts According to Seasons with Dendritic Neuron Model Artificial Neural Network 用树枝状神经元模型人工神经网络根据季节预测土耳其榛子出口量
Pub Date : 2024-06-12 DOI: 10.34110/forecasting.1468420
Emine Kölemen
It is seen that artificial neural networks have begun to be used extensively in the literature in solving the time series forecasting problem. In addition to artificial neural networks, classical forecasting methods can often be used to solve this problem. It is seen that classical forecasting methods give successful results for linear time series analysis. However, there is no linear relationship in many time series. Therefore, it can be thought that deep artificial neural networks, which contain more parameters but create more flexible non-linear model structures compared to classical time series forecasting methods, may enable the production of more successful forecasting methods. In this study, the problem of forecasting hazelnut export amounts according to seasons in Turkey with a dendritic neuron model artificial neural network is discussed. In this study, a training algorithm based on the particle swarm optimization algorithm is given for training the dendritic neuron model artificial neural network. The motivation of the study is to investigate Turkey's hazelnut export amounts according to seasons, using a dendritic neuron model artificial neural network. The performance of the proposed method has been compared with artificial neural networks used in the literature.
可以看到,人工神经网络已开始在解决时间序列预测问题的文献中得到广泛应用。除人工神经网络外,经典预测方法通常也可用于解决这一问题。可以看到,经典预测方法在线性时间序列分析中取得了成功的结果。然而,许多时间序列并不存在线性关系。因此,可以认为,与经典时间序列预测方法相比,深度人工神经网络包含更多参数,但却能创建更灵活的非线性模型结构,可能会产生更成功的预测方法。本研究讨论了利用树枝状神经元模型人工神经网络根据季节预测土耳其榛子出口量的问题。本研究给出了一种基于粒子群优化算法的训练算法,用于训练树突状神经元模型人工神经网络。研究的动机是利用树枝状神经元模型人工神经网络,根据季节调查土耳其的榛子出口量。所提议方法的性能已与文献中使用的人工神经网络进行了比较。
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引用次数: 0
Forecasting of Giresun Hazelnut Quantity in Giresun Province Using Pi-Sigma Artificial Neural Networks 利用 Pi-Sigma 人工神经网络预测吉雷松省榛子数量
Pub Date : 2024-06-12 DOI: 10.34110/forecasting.1468419
Özlem Karahasan
Artificial neural networks are frequently used to solve many problems and give successful results. Artificial neural networks, which we frequently encounter in solving forecasting problems, attract the attention of researchers with the successful results they provide. Pi-sigma artificial neural network, which is a high-order artificial neural network, draws attention with its use of both additive and multiplicative combining functions in its architectural structure. This artificial neural network model offers successful forecasting results thanks to its high-order structures. In this study, the pi-sigma artificial neural network was preferred due to its superior performance properties, and the particle swarm optimization algorithm was used for training the pi-sigma artificial neural network. To evaluate the performance of this preferred artificial neural network, monthly ready-made manufacturer sale shelled hazelnut quantities in Giresun province was used and a comparison was made with many artificial neural network models available in the literature. It has been observed that this tested method has the best performance among other compared methods.
人工神经网络经常被用来解决许多问题,并取得了成功的结果。我们在解决预测问题时经常会遇到人工神经网络,它所提供的成功结果吸引了研究人员的注意。Pi-sigma 人工神经网络是一种高阶人工神经网络,其结构中同时使用了加法和乘法组合函数,因此备受关注。这种人工神经网络模型因其高阶结构而提供了成功的预测结果。在本研究中,π-西格玛人工神经网络因其卓越的性能而受到青睐,并采用粒子群优化算法来训练π-西格玛人工神经网络。为了评估这种首选人工神经网络的性能,使用了吉雷松省每月现成的带壳榛子销售量,并与文献中的许多人工神经网络模型进行了比较。结果表明,在其他比较方法中,该测试方法的性能最佳。
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引用次数: 0
Hybrid AI-based Voice Authentication 基于人工智能的混合语音认证
Pub Date : 2023-12-17 DOI: 10.34110/forecasting.1260073
Bilal Bora, Ahmet Emin Emanet, Enes Elmaci, Derya Kandaz, Muhammed Kürşad Uçar
Biometric authentication systems reveal individuals' physical or behavioral uniqueness and identify them by comparing them with existing records. Today, many biometric recognition systems, such as fingerprint reading, palm reading, and face reading, are being studied and used. The human voice is also among the techniques used for this purpose. Due to this feature, the human voice performs secure transactions and authentication in various fields. Based on these voice features, we used a dataset of 66,569 voice recordings. The voice recordings were revised to include six sentences of at least six words each from 24 different people to get the maximum benefit from the dataset. The voices in the reduced dataset were labeled as sentences belonging to the same person and sentences belonging to different people and converted into matrix form. A biometric recognition study resulted in a correlation score of 0.88. As a result of these processes, the feasibility of a voice biometric recognition system with artificial intelligence has been demonstrated.
生物识别身份验证系统揭示个人身体或行为的独特性,并通过与现有记录进行比较来识别身份。如今,许多生物识别系统,如指纹识别、手掌识别和人脸识别,都在被研究和使用。人声也是用于这一目的的技术之一。由于人声的这一特点,它可以在各个领域进行安全交易和身份验证。基于这些语音特征,我们使用了一个包含 66,569 条语音记录的数据集。为了从数据集中获得最大的收益,我们对这些语音记录进行了修改,使其包括来自 24 个不同人的 6 个句子,每个句子至少包含 6 个单词。缩减后的数据集中的语音被标记为属于同一人的句子和属于不同人的句子,并转换成矩阵形式。生物识别研究得出的相关性分数为 0.88。通过这些工作,证明了人工智能语音生物识别系统的可行性。
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引用次数: 0
Revised Passing-Bablok Regression Method for Model Comparison 用于模型比较的经过修订的 Passing-Bablok 回归方法
Pub Date : 2023-11-26 DOI: 10.34110/forecasting.1367369
N. Erilli
Type-II regression models are used to compare more than one method that makes the same measurement. The Passing-Bablok regression method, which is one of them, is non-parametric and can give more successful results than other comparison methods, especially when there are outliers. In this study, innovations in the calculations of slope and intercept parameters used in the traditional Passing-Bablok method are proposed. Instead of the median parameter used in the classical model, the use of the trimean parameter was suggested and the model parameter estimates were adjusted accordingly. The proposed new model and classical model predictions were compared on 15 different data sets, 8 of which were simulations. It has been determined that the proposed new model calculations contain fewer errors than the results of the classical method.
第二类回归模型用于比较不止一种进行相同测量的方法。Passing-Bablok 回归法是其中的一种,它是非参数法,与其他比较方法相比,尤其是在存在异常值的情况下,可以得到更成功的结果。本研究对传统 Passing-Bablok 方法中使用的斜率和截距参数的计算方法进行了创新。我们建议使用特里曼参数来代替经典模型中使用的中位数参数,并对模型参数估计进行了相应的调整。在 15 个不同的数据集(其中 8 个是模拟数据集)上比较了所提出的新模型和经典模型的预测结果。结果表明,拟议的新模型计算结果比传统方法的结果误差更小。
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引用次数: 0
Impact of Structural Break Location on Forecasting Accuracy: Traditional Methods Versus Artificial Neural Network 结构断裂位置对预测精度的影响:传统方法与人工神经网络
Pub Date : 2022-12-30 DOI: 10.34110/forecasting.1162548
Daud Aser, E. Firuzan
Since forecasting the future values is fundamental for researchers, investors, practitioners, etc., obtaining accurate predictions is critical in time series analysis. The accuracy is reliant on good modeling and good quality data. The latter is affected by unusual observations, changes over time, missing data, and structural breaks among others. Economic crises are the major cause of data instability and therefore, this paper focuses on how structural breaks in conditional heteroscedastic financial and macroeconomic data affect forecasting accuracy on short and long-term horizons. More specifically, we are interested in the impact of the location of the structural break and break size on the predictive performance of two linear (ARIMA and Exponential Smoothing) forecasting models and two nonlinear (ARIMA – ARCH and Artificial Neural Network) models. We conducted Monte Carlo simulations and showed that the forecasting accuracy decreases as the structural break location approaches the end of the sample. In addition, break size and length of the horizon significantly impact the forecasting accuracy. We also showed that ARIMA – ARCH model is the best performing in the absence of structural break while the artificial neural network model outperforms all the competing models in the presence of structural break, especially in large break sizes and long horizons. Last, we applied the above techniques to forecasting daily close prices of Brent oil and Turkish Lira – USD exchange rates out–of–sample and similar results were found.
由于预测未来价值是研究人员、投资者、从业者等的基础,因此在时间序列分析中获得准确的预测是至关重要的。准确性依赖于良好的建模和高质量的数据。后者受到异常观测、随时间变化、数据缺失和结构断裂等因素的影响。经济危机是数据不稳定的主要原因,因此,本文重点研究条件异方差金融和宏观经济数据的结构性断裂如何影响短期和长期预测的准确性。更具体地说,我们感兴趣的是结构断裂的位置和断裂大小对两个线性(ARIMA和指数平滑)预测模型和两个非线性(ARIMA - ARCH和人工神经网络)模型的预测性能的影响。我们进行了蒙特卡罗模拟,结果表明,随着结构断裂位置接近样本的末端,预测精度降低。此外,断裂大小和层位长度对预测精度有显著影响。我们还发现ARIMA - ARCH模型在没有结构断裂的情况下表现最好,而人工神经网络模型在存在结构断裂的情况下表现优于所有竞争模型,特别是在大断裂尺寸和长视野的情况下。最后,我们将上述技术应用于预测布伦特原油的每日收盘价和土耳其里拉-美元的样本外汇率,发现了类似的结果。
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引用次数: 0
Prediction of the Premium Production of Some Insurance Companies Operating in Turkey with Artificial Neural Networks 人工神经网络对土耳其部分保险公司保费收入的预测
Pub Date : 2022-12-29 DOI: 10.34110/forecasting.1223653
Buse Özgür, U. Yolcu
The insurance sector can be seen as a sector that directly affects the country's economy and development with its ability to fund financial markets and meet risks. In this respect, predicting the premium sizes, which is the main factor that constitutes the volume of the insurance sector, as accurately and reliably as possible, indirectly means foreseeing the risks that may arise in terms of the economy and development of the country and taking the necessary measures. In this study, the premium production of some insurance companies operating in Turkey is predicted with different artificial neural networks and evaluated the results comparatively. In this context, basically, two different artificial neural networks (ANNs), feed-forward, and feed-back have been used as predictive tools for insurance premium production. Two training algorithms and two different activation functions have been operated in the structure of the ANNs used. Thus, eight different predictive tools for insurance companies' premium production have been created. The prediction performances of ANNs have been evaluated on the test sets using error criteria such as Root Mean Error Squares, Average Absolute Percentile Error, and Median Absolute Percentile Error.
保险业可以被视为一个直接影响国家经济和发展的部门,它有能力为金融市场提供资金和应对风险。因此,对构成保险业体量的主要因素——保费规模进行尽可能准确、可靠的预测,间接意味着对国家经济和发展中可能出现的风险进行预测,并采取必要的措施。本研究采用不同的人工神经网络对土耳其部分保险公司的保费产出进行预测,并对预测结果进行比较评价。在这种情况下,基本上,两种不同的人工神经网络(ann),前馈和反馈已被用作保费生产的预测工具。两种训练算法和两种不同的激活函数在使用的人工神经网络结构中被操作。因此,为保险公司保费生产创造了八种不同的预测工具。在测试集上使用误差标准(如均方根误差平方、平均绝对百分位误差和中位数绝对百分位误差)对人工神经网络的预测性能进行了评估。
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引用次数: 0
Fully Automatic End-to-End Convolutional Neural Networks-Based Pancreatic Tumor Segmentation on CT Modality 基于CT模式的全自动端到端卷积神经网络胰腺肿瘤分割
Pub Date : 2022-12-06 DOI: 10.34110/forecasting.1190299
Ahmet Furkan Bayram, Caglar Gurkan, Abdulkadir Budak, Hakan Karatas
The pancreas is one of the vital organs in the human body. Early diagnosis of a disease in the pancreas is critical. In this way, the effects of pancreas diseases, especially pancreatic cancer on the person are decreased. With this purpose, artificial intelligence-assisted pancreatic cancer segmentation was performed for early diagnosis in this paper. For this aim, several state-of-the-art segmentation networks, UNet, LinkNet, SegNet, SQ-Net, DABNet, EDANet, and ESNet were used in this study. In the comparative analysis, the best segmentation performance has been achieved by SQ-Net. SQ-Net has achieved a 0.917 dice score, 0.847 IoU score, 0.920 sensitivity, 1.000 specificity, 0.914 precision, and 0.999 accuracy. Considering these results, an artificial intelligence-based decision support system was created in the study.
胰腺是人体的重要器官之一。胰腺疾病的早期诊断至关重要。这样,胰腺疾病,特别是胰腺癌对人的影响就会减少。为此,本文采用人工智能辅助胰腺癌分割进行早期诊断。为此,本研究使用了几种最先进的分段网络,UNet、LinkNet、SegNet、SQ-Net、DABNet、EDANet和ESNet。在对比分析中,sqnet的分割性能最好。SQ-Net的dice评分为0.917,IoU评分为0.847,灵敏度为0.920,特异度为1.000,精密度为0.914,准确度为0.999。考虑到这些结果,本研究创建了一个基于人工智能的决策支持系统。
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引用次数: 0
Convolutional Neural Networks for MRI-Based Brain Tumor Segmentation: A Comparative Analysis of State-of-the-Art Segmentation Networks 基于核磁共振成像的卷积神经网络脑肿瘤分割:最新分割网络的比较分析
Pub Date : 2022-11-04 DOI: 10.34110/forecasting.1190289
Ahmet Furkan Bayram, Caglar Gurkan, Abdulkadir Budak, Hakan Karatas
The prevalence of brain tumor is quite high. Brain tumor causes critical diseases. Also, brain tumor causes a variety of symptoms in most people. This study aims to segmentation of the tumor in the brain. For this purpose, state-of-art architectures, such as UNet, Attention UNet, Residual UNet, Attention Residual UNet, Residual UNet++, Inception UNet, LinkNet, and SegNet were used for segmentation. 592 magnetic resonance (MR) images were utilized in the training and testing of segmentation architectures. In the comparative analysis, Attention UNet achieved the best predictive performance with a 0.886 dice score, 0.795 IoU score, 0.881 sensitivity, 0.993 specificity, 0.891 precision, and 0.986 accuracy.
脑肿瘤的发病率很高。脑瘤会导致严重的疾病。此外,脑瘤在大多数人身上会引起各种各样的症状。这项研究的目的是分割大脑中的肿瘤。为此,最先进的架构,如UNet、Attention UNet、Residual UNet、Attention Residual UNet、Residual UNet++、Inception UNet、LinkNet和SegNet被用于分段。利用592张磁共振(MR)图像进行分割架构的训练和测试。对比分析中,Attention UNet预测效果最佳,dice评分为0.886,IoU评分为0.795,灵敏度为0.881,特异性为0.993,精密度为0.891,准确度为0.986。
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引用次数: 1
The Effect of Handling Imbalanced Datasets Methods on Prediction of Entrepreneurial Competency in University Students 不平衡数据集处理方法对大学生创业胜任力预测的影响
Pub Date : 2022-11-01 DOI: 10.34110/forecasting.1185545
Murat Simsek, Ahmet Said Daş
As of today entrepreneurs and entrepreneurship are considered to be the integral parts of the economic and technological advancements. Entrepreneurs are promoted in many countries because of their high return on investment opportunities both in terms of income and new inventions. Numerous studies prove that entrepreneurs have many traits in common and these common traits can correlate with each other. Based on these common traits, potential entrepreneurs can be predicted, current entrepreneurs can be improved by realising their weak sides and the ones who wish to be entrepreneurs can be provided with insights. A machine learning approach can light the way for a better rewarding future for entrepreneurship, helping these goals significantly. There exist several studies for the prediction of entrepreneurial competency with the use of machine learning algorithms. Most machine learning methods perform better accuracy and F1-score imbalanced data instead in imbalanced data. This study focuses on utilizing imbalanced class handling methods to increase prediction performance. Random Oversampling, Random Undersampling, SMOTE, and NearMiss methods are used to handling imbalanced data for this purpose in this study. The performance of the machine learning algorithms with Imbalanced Data Handling methods is compared with the machine learning algorithms. Comparisons were made using accuracy, precision, recall, F1-Score as performance parameters. The comparison shows a noticeable performance increase using machine learning algorithms with handling imbalanced dataset methods.
时至今日,企业家和企业家精神被认为是经济和技术进步的组成部分。企业家在许多国家受到鼓励,因为他们在收入和新发明方面的投资机会回报高。大量的研究证明,企业家有许多共同的特征,这些共同的特征可以相互关联。基于这些共同特征,可以预测潜在的企业家,可以通过认识现有企业家的弱点来提高他们,可以为希望成为企业家的人提供洞察力。机器学习方法可以为创业带来更好的回报,极大地帮助实现这些目标。目前已有几项利用机器学习算法预测创业能力的研究。大多数机器学习方法在不平衡数据中表现出更好的准确性和f1分数。本研究的重点是利用不平衡类处理方法来提高预测性能。本研究采用随机过采样、随机欠采样、SMOTE和NearMiss方法来处理不平衡数据。比较了采用不平衡数据处理方法的机器学习算法与机器学习算法的性能。以正确率、精密度、召回率、F1-Score为性能参数进行比较。比较表明,使用机器学习算法处理不平衡数据集方法可以显著提高性能。
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引用次数: 0
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Turkish Journal of Forecasting
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