scholarly journals A Hybrid GSTARX-Jordan RNN Model for Forecasting Space-Time Data with Calendar Variation Effect

2021 ◽  
Vol 1752 (1) ◽  
pp. 012013
Author(s):  
F Hikmawati ◽  
Suhartono ◽  
D D Prastyo
Keyword(s):  
2013 ◽  
Vol 34 (10) ◽  
pp. 2470-2474
Author(s):  
Wen-tao Du ◽  
Gui-sheng Liao ◽  
Zhi-wei Yang

1999 ◽  
Vol 258 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Martin J. Bünner ◽  
R. Hegger

2020 ◽  
Vol 1463 ◽  
pp. 012037 ◽  
Author(s):  
Suhartono ◽  
F Hikmawati ◽  
E Setyowati ◽  
N A Salehah ◽  
A Choiruddin
Keyword(s):  

1990 ◽  
Vol 26 (4) ◽  
pp. 585-591 ◽  
Author(s):  
Shahrokh Rouhani ◽  
Hans Wackernagel

Author(s):  
May Yuan

Space-time GIS emerged in the early 1990s to incorporate temporal information and analytical functions so that GIS technology could handle both spatial and temporal data. To do so, GIS technology has to embrace spatial and temporal data throughout the processes of conceptualization, representation, computation, and visualization. Conceptualization captures ontological constructs and how they manifest themselves and relate to each other in space and time meaningfully with respect to the geographic domain of interest. Representation formalizes the conceptualized ontological constructs based on their characteristics, behaviors, and relationships to organize spatial and temporal data effectively in accordance with the geographic domain. Computation operates on digital representations of the ontological constructs to measure spatial and temporal quantities, analyze patterns, model relationships, simulate possible scenarios, and make predictions in space and time. Finally, visualization creates visual means to inspect space-time data and analytical findings throughout GIS processing. Visual analytics, furthermore, utilizes an interactive visual interface to facilitate analytical reasoning, and hence engages visualization in computation. Advances in teal-time or near real-time geospatial data acquisition as well as data streaming and machine learning methods have significantly accelerated the development of space-time GIS since 2010.


2019 ◽  
Vol 125 ◽  
pp. 23015
Author(s):  
Hasbi Yasin ◽  
Budi Warsito ◽  
Rukun Santoso ◽  
Arief Rachman Hakim

Forecasting of rainfall trends is essential for several fields, such as airline and ship management, flood control and agriculture. The rainfall data were recorded several time simultaneously at a number of locations and called the space-time data. Generalized Space Time Autoregressive (GSTAR) model is one of space-time models used to modeling and forecasting the rainfall. The aim of this research is to propose the nonlinear space-time model based on hybrid of GSTAR, Feed Forward Neural Network (FFNN) and Particle Swarm Optimization (PSO) and it called GSTAR-NN-PSO. In this model, input variable of the FFNN was obtained from the GSTAR model. Then use PSO to initialize the weight parameter in the FFNN model. This model is applied for forecasting monthly rainfall data in Jepara, Kudus, Pati and Grobogan, Central Java, Indonesia. The results show that the proposed model gives more accurate forecast than the linear space-time model, i.e. GSTAR and GSTAR-PSO. Moreover, further research about space-time models based on GSTAR and Neural Network is needed to improving the forecast accuracy especially the weight matrix in the GSTAR model.


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