Search

Semi-supervised learning has been widely used in big data analysis.Currently, one of the hot research topics in semisupervised deep learning is consistency-based methods.However, such methods do not take into account the manifold structure of the data, which may cause a portion of similar samples to get very different outputs, resulting in degraded classifier performance.To address this problem, a semi-supervised deep learning algorithm that combines consistency regularization with manifold regularization was proposed.The algorithm imposed a consistency constraint on the model while constructing a graph and adding a smoothing loss to achieve smoothing within the local neighborhood of each sample point and between adjacent (connected) sample points, thus improving the generalization performance of the semisupervised learning algorithm.The results on several image and text datasets show that the proposed algorithm is more effective compared with other semi-supervised deep learning algorithms.

Aiming at several data mining tasks,research developments on data granulation,multi-granularity pattern discovery and fusion,multi-granularity reasoning were carded and analyzed,and the preliminary study on two typical applications astronomical data mining and microblog data mining was summarized,which would be helpful for making a beneficial exploration in big data mining area.