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Table 1 SMART notation

From: Localizing global descriptors for content-based image retrieval

tf df Normalization
n(natural): tf t,d n(no): 1 n(none): 1
l(log): 1+log(tf t,d ) t(idf): log(N/df t ) c (cos):\( {1}/{\sqrt {{w_{1}^{2}}+\dots + {w_{M}^{2}}}}\)