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Table 2 Results of the system when combining the vector space and the regular expression modules.

From: Automatic medical encoding with SNOMED categories

Weighting function concepts.abstracts Top Precision Mean average Precision
Hybrids: tf.idf (VS) + RegEx
ltc.lnn 0.800 0.4545
lnc.lnn 0.791 0.453
anc.ntn 0.787 0.4515
atn.ntn 0.823 0.4485