Table 4 The trained model \(p(\mathbf {C}|\mathbf {T})\) with equivalent of TF-IDF vector \(\mathtt {tfidf}(\mathbf {S},\mathbf {C})\) for the training data. \(\mathbf {S} =\{ \mathbf {aa},\mathbf {ab},\mathbf {ba},\mathbf {bb} \}\) is the SFA words and \(\mathbf {C}=\{C_1,C_2,C_3 \}\) is three states of the fan