Prediction of the Freshness of Grass Carp during Storage with Electric Nose Based on Signal Sequence Merging and Wavelet Transform

Figure 7

Predicted versus measured TVB-N content (a–c) and K value (d–f) for grass carp fillet from different storage time (: 0 d; +: 2 d; : 4 d; ▽: 6 d; : 8 d; •: 10 d; △: 12 d;□: 14 d; ✕: 16 d) analyzed by (a) DSSM-ANN- model, (b) DSSM-ANN- model, (c) DSSM-PLS- model, (d) DSSM-PLS- model, (e) DSSM-ANN- model, (f) DSSM-ANN- model, (g) RSSM-PLS- model, and (h) RSSM-PLS- model. The line is the line of equity (y = x).

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