The Application of Spark-Based Gaussian Mixture Model for Farm Environmental Data Analysis

For fully taking into account the feature of environmental data set the Gaussian mixture model (GMM) is combined with the Dirichlet Process (DP) to solve the problem of specifying the initial cluster number. The Gibbs sampling algorithm is also used as the substitute of the Expectation Maximization algorithm to estimate the parameter of the model with Dirichlet Process. The clustering process is implemented under the framework of Spark so as to deal with farm environmental data set stored in distributed computer cluster. Experiment results with external criterion show that the improved clustering method has a better ability in data anomaly detection compared with other common cluster methods. Farm environmental data anomaly detection is implemented by the improved clustering method.