نتایج جستجو برای: box jenkins time series
تعداد نتایج: 2196112 فیلتر نتایج به سال:
Tuberculosis (TB) is one of the leading causes mortality in developing countries world. It an airborne disease spread through inhaling. This study investigated cases tuberculosis at Nnamdi Azikiwe University Teaching Hospital (NAUTH) Nigeria. The TB data used this are secondary sourced from NAUTH register January 2005 to December 2021. a retrospective cohort and time series analysis all diagnos...
In the last five decades, Box Jenkins methodology has been in existence to model univariate time series data but fails or limitations on modeling volatility. Most financial do exhibit heavy tail and thick distribution, this effect various parametric semi-parametric non –linear models have proposed two three decades ago capture However, research entails measuring volatility its forecasting using...
This study assesses the relationship between short term fluctuations of Lake Erie water levels and the El Niño/Southern Oscillation (ENSO) using data collected from May 1978 to May 1997. After standardizing the collected data, graphical and Box-Jenkins time series techniques are utilized to assess the temporal interrelationship of the Southern Oscillation Index and Lake Erie water level variabl...
The challenge of predicting future values of a time series covers a variety of disciplines. The fundamental problem of selecting the order and identifying the time varying parameters of an autoregressive moving average model (ARMA) concerns many important fields of interest such as linear prediction, system identification and spectral analysis. Recent research activities in forecasting with art...
In this article, we apply Bayesian neural networks (BNNs) to time series analysis, and propose a Monte Carlo algorithm for BNN training. In addition, we go a step further in BNN model selection by putting a prior on network connections instead of hidden units as done by other authors. This allows us to treat the selection of hidden units and the selection of input variables uniformly. The BNN m...
Background Road traffic accidents and their related deaths have become a major concern, particularly in developing countries. Iran has adopted a series of policies and interventions to control the high number of accidents occurring over the past few years. In this study we used a time series model to understand the trend of accidents, and ascertain the viability of applying ARIMA models on data...
The response of healthcare services to new information systems depends upon, among other factors, their local organization. This study aimed at comparing the chemotherapy and radiotherapy production registers for the cities Rio de Janeiro and Belo Horizonte, Brazil, in the Ambulatory Information System of the Unified Brazilian Health System (in Portuguese, SUS) between November/1998 and Februar...
Data on the effect of the September 11, 2001 (9/11) terror attacks on suicide rates remain inconclusive. Reportedly, even people located far from the attack site have considerable potential for personalizing the events that occurred on 9/11. Durkheim's theory states that suicides decrease during wartime; thus, a decline in suicides might have been expected after 9/11. We conducted a time series...
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