Svetlana Zhuchkova won Student Research Paper Competition
On February 12, the deputy head of the RSG Svetlana Zhuchkova and the head of RSG Alexey Rotmistrov were invited at the meeting of winners of Student Research Paper Competition (SRPC) with the rector of HSE Yaroslav Kuzminov. After the discussion between Mr. Kuzminov and students, an award ceremony was held. Svetlana was among the winners. Her paper was written under the guidance of Alexey Rotmistrov.
The purpose of the paper was to find out if the CHAID defines missings to nodes correctly and what are the consequences of including missing values into the model. Using a series of statistic experiments, Svetlana discovered that the method identifies missings correctly. However, in the most cases including missing values is followed by changes in the tree structure. Therefore there is a risk of getting substantially incorrect conclusions.