tailieunhanh - Ideal Profile Method: A comparison between rating and ranking technique

The result showed that two product spaces were highly similar. However, compared to IPM-QDA, IPM-RDA better improved the discriminability, increased the consensus among the assessors and reduced the variability of ideal profile. These findings indicated that ranking was more efficient than rating in gathering descriptive data using naïve consumers. | Ideal Profile Method: A comparison between rating and ranking technique 50 SCIENCE & TECHNOLOGY DEVELOPMENT JOURNAL: ENGINEERING & TECHNOLOGY, VOL 1, ISSUE 2, 2018 Ideal Profile Method: A comparison between rating and ranking technique Nguyen Quang Phong, Nguyen Hoang Dzung * 1 on its information, manufacturers can modify their Abstract—Ideal profile method (IPM) has been current product or create a new product to maximize proved to be an effective and useful method in product sales and marketing. That is the reason why most of development. This method is similar to QDA® except manufacturers always try to identify the ideal that the samples are not rated by trained panelists but naïve consumers. However, the rating technique is product. There are two types of methods for that often found to be difficult for consumers. This study purpose: conventional method and rapid method. proposed a new variant of IPM using ranking Conventional method is the so-called external technique to facilitate the data collecting by naïve preference mapping (PrefMap). Its data is a consumers. The samples were five commercial lemon combination of hedonic data and descriptive data. green teas available in Vietnam market. The Hedonic data are obtained by consumers, whereas participants were bottled tea consumers who were randomly assigned into two groups of 60. The first descriptive data are obtained by a trained or expert group performed the conventional IPM (aka “IPM- panel. From statistical point of view, PrefMap QDA”) using rating technique, in which the samples focuses on the sensory profiles of products, then were presented in randomized monadic order and the hedonic data will be regressed on the sensory participants rated both the perceived and ideal dimensions. Ideal product will belong to the area intensities of the attributes on the 10-cm line scales. where a maximum proportion of consumers would The second group, on the .

• Cơ khí - Chế tạo máy
• Confidence ellipses technique
• Ideal Profile Method
• Multiple Factor Analysis
• The new variant of IPM
• Facilitate the data
• The variability of ideal profile