LSTM Based Prediction of Total Dissolved Solids in Hydroponic System

Abstract

This paper discusses the implementation of long short term memory (LSTM) for forecasting the value of total dissolved solids (TDS). The TDS value in a hydroponic system represents the number of nutrients contained in water. The amount of water in the hydroponic system is important to note because optimal plant growth depends on the number of nutrients obtained by the plant. TDS data is sequential data, and one way to do forecasting is to use LSTM. This study uses a combination of epoch values of 100, 200, 300, 400 and 500. The RMSE values of on any combinations 57.41, 50.90, 57.81, 67.60 and 26.62. In general, the smallest RMSE value of each combination produces a graph that is close to except for a 70%: 30% combination. The greater use of training data compared to test data (90%: 10%) results in the smallest average RMSE value of 35.48. Keywords—LSTM, forecasting, hydroponic, total dissolved solids