نتایج جستجو برای: accident forecasting
تعداد نتایج: 175168 فیلتر نتایج به سال:
Improving time series forecastingaccuracy is an important yet often difficult task.Both theoretical and empirical findings haveindicated that integration of several models is an effectiveway to improve predictive performance, especiallywhen the models in combination are quite different. In this paper,a model of the hybrid artificial neural networks andfuzzy model is proposed for time series for...
The approaches that ensure the trouble-free operation of marine power system in abnormal modes were considered. Such are usually associated with elements failure during operation. Particular attention was paid to processes occurring circuit transition one generators motoring mode. relevance considered issue substantiated. According research results, using time-delay when generating a signal dis...
امروزه علیرغم تلاش های صورت گرفته به منظور دسترسی به صنایع امن، وقوع حوادث و سوانحی (از قبیل آتش سوزی، انفجار و آلودگی محیط زیست) رو به افزایش است. این حوادث منجر به تلفات و آسیب دیدگی انسانی و خسارات مالی گسترده ای می شوند. لذا توجه به آن ها از جایگاه ویژه ای برخوردار است. متدولوژی هایی برای بررسی و تحلیل حوادث در برخی از صنایع ایجاد گردیده است. این متدولوژی ها اغلب با مشکلاتی از قبیل صرف مناب...
computational intelligence approaches have gradually established themselves as a popular tool for forecasting the complicated financial markets. forecasting accuracy is one of the most important features of forecasting models; hence, never has research directed at improving upon the effectiveness of time series models stopped. nowadays, despite the numerous time series forecasting models propos...
abstract forecasting electrical energy demand and consumption is one of the important decision-making tools in distributing companies for making contracts scheduling and purchasing electrical energy. this paper studies load consumption modeling in hamedan city province distribution network by applying esn neural network. weather forecasting data such as minimum day temperature, average day temp...
improving time series forecastingaccuracy is an important yet often difficult task.both theoretical and empirical findings haveindicated that integration of several models is an effectiveway to improve predictive performance, especiallywhen the models in combination are quite different. in this paper,a model of the hybrid artificial neural networks andfuzzy model is proposed for time series for...
Computational intelligence approaches have gradually established themselves as a popular tool for forecasting the complicated financial markets. Forecasting accuracy is one of the most important features of forecasting models; hence, never has research directed at improving upon the effectiveness of time series models stopped. Nowadays, despite the numerous time series forecasting models propos...
time series forecasting is an active research area that has drawn considerable attention for applications in a variety of areas. forecasting accuracy is one of the most important features of forecasting models. nowadays, despite the numerous time series forecasting models which have been proposed in several past decades, it is widely recognized that financial markets are extremely difficult to ...
I n this paper, we specify that the GARCH(1,1) model has strong forecasting volatility and its usage under the truncated standard normal distribution (TSND) is more suitable than when it is under the normal and student-t distributions. On the contrary, no comparison was tried between the forecasting performance of volatility of the daily return series using the multi-step ahead forec...
Three combination methods commonly used in tourism forecasting are the simple average method, the variance-covariance method and the discounted MSFE method. These methods assign the different weights that can not change at each time point to each individual forecasting model. In this study, we introduce the IOWGA operator combination method which can overcome the defect of previous three combin...
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