نتایج جستجو برای: forecasting error

تعداد نتایج: 292207  

Journal: :Expert Syst. Appl. 2013
Marin Matijas Johan A. K. Suykens Slavko Krajcar

Although over a thousand scientific papers address the topic of load forecasting every year, only a few are dedicated to finding a general framework for load forecasting that improves the performance, without depending on the unique characteristics of a certain task such as geographical location. Meta-learning, a powerful approach for algorithm selection has so far been demonstrated only on uni...

Journal: :تحقیقات مالی 0
رضا تهرانی دانشیار دانشکده مدیریت دانشگاه تهران، ایران شاپور محمدی عضو هیئت علمی دانشکده مدیریت دانشگاه تهران، ایران محمدرضا پورابراهیمی دانشجوی دوره دکترای مدیریت مالی دانشکده مدیریت دانشگاه تهران، ایران

modeling and forecasting the volatility of tehran exchange dividend price index (tedpix) the present research, analyses the forecasting performance of a variety of conditional and non-conditional models of tedpix volatility at the daily frequencies performance criterion namely the root mean square error (rmse). under rmse, results show ma250 and cgarch models had better performance between non ...

سید علی عظیمی محسن شفیعی نیک آبادی

Abstract—the purpose of this paper is to compare two artificial intelligence algorithms for forecasting supply chain demand. In first step data are prepared for entering into forecasting models. In next step, the modeling step, an artificial neural network and support vector machine is presented. The structure of artificial neural network is selected based on previous researchers' results. For ...

Babak Teimourpour, Nima Riahi Seyyed-Mahdi Hosseini-Motlagh

Background and Objectives: Efficient cost management in hospitals’ pharmaceutical inventories have the potential to remarkably contribute to optimization of overall hospital expenditures. To this end, reliable forecasting models for accurate prediction of future pharmaceutical demands are instrumental. While the linear methods are frequently used for forecasting purposes chiefly due to their si...

ژورنال: علوم آب و خاک 2007
محمدحسین شیخی, , منصور زیبایی, , بهاء الدین نجفی, , محمدحسن طرازکار, ,

In this study wholesale prices of selected crops, namely, tomato, onion and potatoes in Fars province were predicted for various time horizons by using common methods of forecasting and artificial neural networks (ANN). Monthly data from September 1998 to June 2005 period were obtained from Ministry of Jihad-e Agriculture. For comparing different methods data selected from September 1998 to Dec...

محمدحسین شیخی, , منصور زیبایی, , بهاء الدین نجفی, , محمدحسن طرازکار, ,

In this study wholesale prices of selected crops, namely, tomato, onion and potatoes in Fars province were predicted for various time horizons by using common methods of forecasting and artificial neural networks (ANN). Monthly data from September 1998 to June 2005 period were obtained from Ministry of Jihad-e Agriculture. For comparing different methods data selected from September 1998 to Dec...

2017
George E Saulnier Janna C Castro Curtiss B Cook Bithika M Thompson

Aim Apply methods of damped trend analysis to forecast inpatient glycemic control. Method Observed and calculated point-of-care blood glucose data trends were determined over 62 weeks. Mean absolute percent error was used to calculate differences between observed and forecasted values. Comparisons were drawn between model results and linear regression forecasting. Results The forecasted mea...

2016
Jie Wu Mengwei Liu Xuhua Gao

As renewable energy increasingly integrates into the electric power system, electric load forecasting and renewable energy power generation forecasting become more important. In this project, ARIMA and NARX are applied to build load forecasting model focusing on improving statistical and computational efficiency without losing accuracy. ARIMA turns out to be better for short term forecasting wh...

2016
Nikita Mittal Akash Saxena

This paper presents a straight forward application of Layer Recurrent Neural Network (LRNN) to predict the load of a large distribution network. Short term load forecasting provides important information about the system’s load pattern, which is a premier requirement in planning periodical operations and facility expansion. Approximation of data patterns for forecasting is not an easy task to p...

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