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B13-P:SWOT & PCA EVALUATION OF BROWNING PROCESS
IN BASIL-BASED PESTO SPREADS
L. Pezo (1), M. Pavlović (1), S. Ostojić (1), M. Kićanović (1), S. Zlatanović (1), O. Kovačević (1), J. Gvozdenović (2)
1Institute of General and Physical Chemistry, Beograd, Studentski trg 12/V, Serbia
2Faculty of Technology, Novi Sad, Bul. Cara Lazara 1, Serbia
The quantified SWOT (Strengths, Weaknesses, Opportunities and Threats) analytical method presented in this article is the method of solving multi-variate problem. The Quantified SWOT analytical method adopts the concept of Multiple-Attribute Decision Making (MADM), which uses a multi-layer scheme to simplify complicated problems, and thus it is able to perform SWOT analysis on several pesto spreads simultaneously. The data objects to be compared were pesto spreads on 0th and 30th day. The research of the main key factors (parameters of influence) took place in the evaluation, and also the collection of data represented by key factors. The weights of key factors are evaluated according to principal component analysis (PCA). The weights of key factors could also be evaluated by expert analysis or analytic hierarchy procedure (AHP).
The determined values of Peroxide Value (PV), Acid Value (AV) and OITDSC (for both 0th and 30th day) are the input values for SWOT calculation, while the weights are calculated. The used normalization method is made by using fuzzy set (0 – 1), and calculated as benefit-criteria normalization (the higher the better), or cost-criteria normalization (the lower the better).
After calculation of the 0th and 30th day weight scores of the comparing objects, and also the normalization of key factors, the score value is calculated for each data object. In this paper the determination of the benchmarking value was carried out using the mean as the benchmarking value. The scores of the compared pesto spreads were added and then the benchmarking value subtracted. The final value of the calculation was the coordinate value of the compared pesto spread in the SWOT analysis matrix. In order to show the comparison on the four-quadrant coordinate system, the ordinate is prescribed to stand for the 30th day of the pesto spread, while the abscissa is prescribed to stand for the 0th day of the pesto spread. Each pesto spread has its coordinate, so its position in the competition can be clearly realized on the diagram, regarding the quadrant. Also, the final benchmark value is calculated using weight factors for 0th and 30th day pesto spread and its score values. Weight factors are also calculated using PCA analysis. The score values obtained by evaluation are represented as results in range 1 – 5 points, which is far more understandable, then the range 0 – 1, while the SWOT coordinates falls within the range of -0.5 to +0.5, for both 0th and 30th day.
0th day score vector shows results that fit very well to those acquired by color image analysis, shown in Colour analysis article.
References
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- H. H. Chang, W. C. Huang, Mathematical and Computer Modelling, 2006, 43, 158–169.
- J. Wang, X. Lu, J. Tian, M. Jiang, Chin., Geogra. Sci., 2008, 18(4), 361–368
