Selasa, 02 Mei 2017

Forecasting Malaria Epidemic Based On Data Records Incidence And Weather Patterns In Banggai Regency Using Hopfield Neural Network

Suyitno, The Houw Liong , Arif Budiman



ABSTRACT
Malaria still remains a public health problem in developing countries and changing environmental and weather factors pose the biggest challenge in fighting against the scourge of malaria. Malaria is an endemic disease in most of Indonesian area, especially in rural and remote areas. The incidence and spreading of malaria were influenced by environmental and weather factors, namely temperature, rainfall, humidity and length of daylight. Therefore this study would like to developed a malaria incidence prediction system based on environmental and weather factors, so that it may assist Indonesian Ministry of Health to control malaria. The method used to solve this problem was Hopfield Neural Network.
Hopfield Neural Network method have being application for malaria forecast because this method can give the recurrent malaria classification. This weather substance in Hopfield method as the neuron input and then the result of simulation process will be recurrent as input until reach stabil condition. The best performance while predicting malaria incidence  in the year of July 2008 – December 2009, was accuracy 94.14%, and  MAPE 5.86%. Using the training dataset is 80% from total data, with a mean threshold data.
Using a Hopfield Network can reduce the number of iterations to get the convergence toward the target pattern. In our study to get an output that converges on average takes 8 iterations within several seconds.

Keywords: Malaria, Prediction, Artificial Neural Network, Discrete Hopfield.


Senin, 20 Maret 2017

The Future of Humanity


The Future of Humanity

https://www.theguardian.com/culture/2017/mar/19/yuval-harari-sapiens-readers-questions-lucy-prebble-arianna-huffington-future-of-humanity

Senin, 13 Februari 2017

Jumat, 10 Februari 2017

Predicion and Anomaly Detecton of Rainfall for Planting Time Based On Evolving Neural Network in Soreang, Bandung

Predicion and Anomaly Detecton of Rainfall for Planting Time
Based On Evolving Neural Network in Soreang, Bandung
</ 
Gunawansyah
Supervisor : Prof.Dr. The Houw Liong
Co-Supervisor : Prof. Dr. Adiwijaya
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As an agricultural country and located around the equator line, Indonesia
geographical position between two continents and oceans is very sensitive to
regional and global atmospheric circulations as sunspot, cosmic rays, Indian
Ocean Dipole(IOD) and Southern Oscillation Index(SOI). The disruption of one
circulation can affect climate and weather. Extreme anomaly climate is very
influential in the agriculture field because it can decrease growing area,
production and productivity of food crops. In this research, rainfall
prediction has been conducted using Evolving Neural Network (ENN) and
completed with anomaly detection for finding the best starting time for
planting, so the risk of loss due to rainfall anomalies can be minimized
because farmers can adjust the planting starting time with the change of the
rainfall and the attention to anomalies that occur during the growing seasons.
From three scenarios, one hidden layer in Artificial Neural Network (ANN)
architecture was sufficient and ENN had good performance in different dataset.
Rainfall prediction result used all data (January-December) from 1999-2013 had
the accuracy of 84.6%, 66.02% for dry season (April-September) and 79.7% for
wet season (October-March). Based on prediction and anomaly detection in this
research, in Soreang the first week of January, April and October 2014 we 
recommended for the starting time of planting in 2014.

Keywords: Rainfall, Prediction, Evolving Neural Network, Genetic Algorithm
Artificial Neural Network, Anomaly Detection