@conference {zhang2009search,
	title = {Search Engine Adaptation by Feedback Control Adjustment for Time-sensitive Query.},
	booktitle = {HLT-NAACL (Short Papers)},
	year = {2009},
	pages = {165{\textendash}168},
	author = {Zhang, Ruiqiang and Chang, Yi and Zheng, Zhaohui and Metzler, Donald and Jian-Yun Nie}
}
