KIPS Transactions on Computer and Communication Systems (정보처리학회논문지:컴퓨터 및 통신 시스템)

Korea Information Processing Society (한국정보처리학회)
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A Time-Series Data Prediction Using TensorFlow Neural Network Libraries

텐서 플로우 신경망 라이브러리를 이용한 시계열 데이터 예측

  • Received : 2019.01.23
  • Accepted : 2019.02.19
  • Published : 2019.04.30
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Abstract

This paper describes a time-series data prediction based on artificial neural networks (ANN). In this study, a batch based ANN model and a stochastic ANN model have been implemented using TensorFlow libraries. Each model are evaluated by comparing training and testing errors that are measured through experiment. To train and test each model, tax dataset was used that are collected from the government website of indiana state budget agency in USA from 2001 to 2018. The dataset includes tax incomes of individual, product sales, company, and total tax incomes. The experimental results show that batch model reveals better performance than stochastic model. Using the batch scheme, we have conducted a prediction experiment. In the experiment, total taxes are predicted during next seven months, and compared with actual collected total taxes. The results shows that predicted data are almost same with the actual data.

본 논문에서 인공 신경망을 이용한 시계열 데이터 예측 사례에 대해 서술한다. 본 연구에서는 텐서 플로우 라이브러리를 사용하여 배치 기반의 인공 신경망과 스타케스틱 기반의 인공신경망을 구현하였다. 실험을 통해, 구현된 각 신경망에 대해 훈련 에러와 시험에러를 측정하였다. 신경망 훈련과 시험을 위해서 미국의 인디아나주의 공식 웹사이트로부터 8개월간 수집된 세금 데이터를 사용하였다. 실험 결과, 배치 기반의 신경망 기법이 스타케스틱 기법보다 좋은 성능을 보였다. 또한, 좋은 성능을 보인 배치 기반의 신경망을 이용하여 약 7개월 간 종합 세수 예측을 수행하고 예측된 결과와 실제 데이터를 수집하여 비교 실험을 진행 하였다. 실험 결과, 예측된 종합 세수 금액 결과가 실제값과 거의 유사하게 측정되었다.

Keywords

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Fig. 1. Topology of Artificial Neural Network Model in the Experiment

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Fig. 2. A Flow of the Whole Implementation

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Fig. 3. Sample Code of the Implementation

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Fig. 4. Experimental Results in a Batch with the Size of 10

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Fig. 5. Experimental Results in a Batch with the Size of 20

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Fig. 6. Experimental Results in a Stochastic Model

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Fig. 7. Experimental Results with Gradient Descent Optimizer

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Fig. 8. Experimental Results According to the Learning Rate Changes

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Fig. 9. A Comparison of Actual Tax and Predicted Taxes

Table 1. Original Dataset Sample

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Table 2. A Sample of Extended Dataset

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Table 3. A Comparison of Predicted and Actual Taxes

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