نتایج جستجو برای: auto regressive integrated moving average arima

تعداد نتایج: 755003  

2012
Qian Zhang Kin Keung Lai Dongxiao Niu Qiang Wang Xuebin Zhang

Many models have been developed to forecast wind farm power output. It is generally difficult to determine whether the performance of one model is consistently better than that of another model under all circumstances. Motivated by this finding, we aimed to integrate groups of models into an aggregated model using fuzzy theory to obtain further performance improvements. First, three groups of l...

Journal: :Int. J. Computational Intelligence Systems 2013
Mehdi Khashei Farimah Mokhatab Rafiei Mehdi Bijari

Improving forecasting especially time series forecasting accuracy is an important yet often difficult task facing forecasters. Fuzzy autoregressive integrated moving average (FARIMA) models are the fuzzy improved version of the autoregressive integrated moving average (ARIMA) models, proposed in order to overcome limitations of the traditional ARIMA models; especially data limitation, and yield...

Journal: :CoRR 2009
Adhistya Erna Permanasari Dayang Rohaya Awang Rambli P. Dhanapal Durai Dominic

Zoonosis refers to the transmission of infectious diseases from animal to human. The increasing number of zoonosis incidence makes the great losses to lives, including humans and animals, and also the impact in social economic. It motivates development of a system that can predict the future number of zoonosis occurrences in human. This paper analyses and presents the use of Seasonal Autoregres...

Journal: :Energy Reports 2023

Forecasting electricity demand requires accurate and sustainable data acquisition systems which rely on smart grid systems. To predict the expected by grid, many meters are required to collect sufficient data. However, problem is multi-dimensional simple power aggregation techniques may fail capture relational similarities between various types of users. Therefore, forecasting energy plays a ke...

2013
P. Arumugam

Forecasting accuracy is one of the most favorable critical issues in Autoregressive Integrated Moving Average (ARIMA) models. The study compares the application of two forecasting methods on the amount of Taiwan export, the Fuzzy time series method and ARIMA method. Model discussed for the ARIMA method and Fuzzy time series method include the Sturges rules. When the sample period is extend in o...

2000
Mirko WAGNER Jens TIMMER

Hidden Markov models (HMM) are successfully applied in various elds of time series analysis. Colored noise, e.g. due to ltering, violates basic assumptions of the model. While it is well-known how to consider auto-regressive (AR) ltering, there is no algorithm to take into account moving-average (MA) ltering in parameter estimation exactly. We present an approximate likelihood estimator for MA-...

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