نتایج جستجو برای: mean absolute error

تعداد نتایج: 863559  

2012

This paper focuses on the methodology used in applying the Time Series Data Mining techniques to financial time series data for calculating currency exchange rates of US dollars to Indian Rupees. Four Models namely Multiple Regression in Excel, Multiple Linear Regression of Dedicated Time Series Analysis in Weka, Vector Autoregressive Model in R and Neural Network Model using NeuralWorks Predic...

Journal: :The Annals of Statistics 2004

2016
Kasra Mohammadi Shahaboddin Shamshirband Mohammad Hossein Anisi Khubaib Amjad Alam Dalibor Petković Aleksandra Medvedeva

In this paper, the support vector regression (SVR) methodology was adopted to estimate the horizontal global solar radiation (HGSR) based upon sunshine hours (n) and maximum possible sunshine hours (N) as input parameters. The capability of two SVRs of radial basis function (rbf) and polynomial basis function (poly) was investigated and compared with the conventional sunshine duration-based emp...

2017
Akshay Nair Mattia Veronese Xiaohui Xu Charles Curtis Federico Turkheimer Robert Howard Suzanne Reeves

Erratum Following publication of the original article [1] the authors contacted the team with the request that some additional information be added to the article. Please see below for details: Additional Table: absolute variability Variability (VAR) presented in the main article represents mean variability between test and retest, not absolute variability as stated. The authors would like to a...

2016
Lihua Yang Baolin Li

To effectively predict auto sales and improve the competitiveness of automotive enterprise, the characteristics of actual auto sales were analyzed, owing to the seasonal fluctuations and the nonlinearity of monthly sales, the combination forecasting model based on seasonal Index and RBF neural network was proposed. The weights of the two single models were computed using mean absolute percentag...

Journal: :تحقیقات جغرافیایی 0
حسین شایقی بهروز سبحانی بهروز سبحانی سید اسعد حسینی برومند صلاحی بهروز سبحانی

â  the prediction of maximum temperatures as one of the most important climatic parameters due to climate change, global warming and the recent drought will provide definitely more opportunity for planning and the provision of necessary arrangements for the planners. maximum temperatures are much important in management of natural and water resources, agriculture, development of pests and disea...

شاهنظری, علی, کاراندیش, فاطمه,

  The lack of enough meteorological stations at high elevations in mountainous regions causes a limitation for using regression relations to interpolate air temperatures at different time scales. Therefore, in this study, geostatistical methods include Kriging, Co-Kriging and Weighting moving average has been compared with elevation-temperature relation using a data series of 25 years (1975-200...

ژورنال: علوم آب و خاک 2015
بابایی حصار, سحر, عرفانیان, مهدی,

Concerning the drying problem of the Lake Urmia in Iran, so far the relevant scientific research has not been conducted based on watershed management principles. The surface solar radiation (Rs) is one of the key input parameters in most of reference evapotranspiration (ET0) prediction models. In the present research, four solar radiation models were evaluated to predict the monthly-mean values...

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