Artificial Neural Networks are used in situations where you’re trying to duplicate the performance of living organisms or detect patterns in data. Medical diagnoses, recognizing speech, visualizing data, and predicting handwritten digits are all good use cases for an ANN. Artificial neural networks are used when there is a need to understand complex relationships between inputs and outputs. For example, there may be a lot of noise in the variables and it may be difficult to understand the relationships between these variables. Therefore, using Artificial Neural Networks is a common practice to retain the knowledge and data.