TRECVID 2007 Search Tasks by NUS-ICT. - Tat-Seng Chua; Shi-Yong Neo; Yantao Zheng; Hai-Kiat Goh; Xiaoming Zhang; Sheng Tang; Yong-Dong Zhang 001; Jin-Tao Li 001; Juan Cao 001; Huan-Bo Luan; Qiao-Yan He; Xu Zhang 028 (TRECVID, 2007)