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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: J Biomed Inform. 2013 Aug 15;46(6):10.1016/j.jbi.2013.08.004. doi: 10.1016/j.jbi.2013.08.004

Figure 2.

Figure 2

Building a signature vector for the seed term “abdominal pain” from IDF table and corpus, considering previous and following two words as well as internal words, assuming w0 = 1, wi = 20