GBRTVis: online analysis of gradient boosting regression tree

Abstract : Visualizations of machine learning models have developed rapidly during these days, attracting great interests of industry and researchers. However, a pipeline that visualizations are created from logged data is a time-consuming process. In this work, we adopt progressive visual analytics to propose a new pipeline to facilitate the visual analysis progress of gradient boosting regression tree (GBRT). Visualizations such as tree view, instances view, and cluster view are created according to different types of data in real time. Users can explore GBRT with different visualization components interactively through GBRTVis. Case studies demonstrate that our pipeline can improve the efficiency of the training process and understanding. Furthermore, we propose a mixed structure of GBRT to improve itself. Two tests on different datasets show the effectiveness of the improvement. Graphical Abstract: [Figure not available: see fulltext.].