Deep Classifier for Large Scale Hierarchical Text Classification

In this competition, we refined a novel algorithm for classification on large scale documents with deep category structure based on a two-stage strategy known as the deep-classifier [1]. The basic idea of deep-classifier is to take advantage of the better performance of kNN relevance search on large scale categories and the higher precision of the Naive Bayes for multi-class classification. As a result, it achieved improvement on both performance and efficiency in our experiment.