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- case-insensitive prefix search: default
e.g., sig matches "SIGIR" as well as "signal"
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Update May 7, 2017: Please note that we had to disable the phrase search operator (.) and the boolean not operator (-) due to technical problems. For the time being, phrase search queries will yield regular prefix search result, and search terms preceded by a minus will be interpreted as regular (positive) search terms.
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- Eric Lofgren, Nina H. Fefferman, Meena Doshi, Elena N. Naumova:
Assessing Seasonal Variation in Multisource Surveillance Data: Annual Harmonic Regression. BioSurveillance 2007: 114-123
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