@conference {15314,
	title = {What works better for question answering: Stemming or morphological query expansion},
	booktitle = {Proceedings of the Information Retrieval for Question Answering (IR4QA) Workshop at SIGIR 2004},
	year = {2004},
	month = {2004///},
	abstract = {How do different information retrieval techniques affect theperformance of document retrieval in the context of question
answering? An exploration of this question is our overall re-
search goal. In this paper, we specifically examine strategies
for coping with morphological variation. This work quanti-
tatively compares two different approaches to handling term
variation: applying a stemming algorithm at indexing time,
and performing morphological query expansion at retrieval
time. We discovered that, compared to the no-stemming
baseline, stemming results in lower recall, and morphologi-
cal expansion yields higher recall. By separately weighting
different term variants, we were able to achieve even higher
recall, which opens the door to interesting question analy-
sis algorithms for sophisticated query generation. Another
significant contribution of our work is the development of a
reusable question answering test collection to support our
experiments.
},
	author = {Bilotti,M. W and Katz,B. and Jimmy Lin}
}
