A Novel Click Model and Its Applications to Online Advertising Zeyuan Allen Zhu 1,2,* , Weizhu Chen 2 , Tom Minka 3 , Chenguang Zhu 2,4 , Zheng Chen 2 1 Fundamental Science Class, Department of Physics, Tsinghua University Beijing, China, 100084 zhuzeyuan@hotmail.com 2 Microsoft Research Asia Beijing, China, 100080 {v-zezhu, wzchen, v-chezhu, zhengc} @microsoft.com 3 Microsoft Research Cambridge C