@conference {15894,
	title = {Probabilistic structured query methods},
	booktitle = {Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval},
	series = {SIGIR {\textquoteright}03},
	year = {2003},
	month = {2003///},
	pages = {338 - 344},
	publisher = {ACM},
	organization = {ACM},
	address = {New York, NY, USA},
	abstract = {Structured methods for query term replacement rely on separate estimates of term tes of replacement probabilities. Statistically significantfrequency and document frequency to compute a weight for each query term. This paper reviews prior work on structured query techniques and introduces three new variants that leverage estima improvements in retrieval effectiveness are demonstrated for cross-language retrieval and for retrieval based on optical character recognition when replacement probabilities are used to estimate both term frequency and document frequency.},
	keywords = {arabic, CLIR, OCR, structured queries, term replacement},
	isbn = {1-58113-646-3},
	doi = {10.1145/860435.860497},
	url = {http://doi.acm.org/10.1145/860435.860497},
	author = {Darwish,Kareem and Oard, Douglas}
}
