• Communications for Statistical Applications and Methods
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• v.30 no.5
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• pp.485-499
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• 2023

This study aimed to predict the number of meals served in a group cafeteria using machine learning methodology. Features of the menu were created through the Word2Vec methodology and clustering, and a stacking ensemble model was constructed using Random Forest, Gradient Boosting, and CatBoost as sub-models. Results showed that CatBoost had the best performance with the ensemble model showing an 8% improvement in performance. The study also found that the date variable had the greatest influence on the number of diners in a cafeteria, followed by menu characteristics and other variables. The implications of the study include the potential for machine learning methodology to improve predictive performance and reduce food waste, as well as the removal of subjective elements in menu classification. Limitations of the research include limited data cases and a weak model structure when new menus or foreign words are not included in the learning data. Future studies should aim to address these limitations.

• Journal of Food Hygiene and Safety
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• v.31 no.4
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• pp.250-257
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• 2016

This study was conducted to extract the factors affecting the microbial safety of leaf and stem vegetables in the high school foodservice and to provide information for supplying the safe foodservice menu. The lunch and dinner menu (1,945 data) of the total 6 high schools at the Central and the South Region in March, June, September, and December were collected. The frequency analysis and the multiple correspondence analysis (MCA) based on the 3 factors (potentially hazardous food (PHF), leafy and stem vegetables in the menu, the cooking methods) were conducted. The most frequent PHF was the menu of blanched vegetables, salads, seaweeds and fried chicken. The most frequent consumed leaf and stem vegetables were spinach, chive, lettuce, Western cabbage, perilla leaf, iceberg lettuce, chicory, leek and broccoli. MCA based on the leaf and stem vegetables, the region, and the cooking method (cooked/non-cooked) showed that garlic stem and spinach were more used in the Central Region, while water drop-wort were more used in the South Region. Iceberg lettuce, Bok choy and leek were included frequently in the PHF menu. Plant products frequently used in PHF menu requires the food safety system such as Good Agricultural Practice (GAP) to reduce the microbial risk. The menu database according to raw materials based on cooking methods (heating or mixing) as well as the development and verification of menu based on the microbial safety will be contributed to provide the safer foodservice menu.

• Culinary science and hospitality research
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• v.8 no.3
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• pp.21-37
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• 2002

The purpose if this study is to analyze the psychological preference of Family Restaurants and their behavioral characteristic and its segmentation, positioning, new product development and marketing min. Result of analysis, index and type of MBTI psychological preference are related to Family Restaurant Choice attributes intimately. Specially, "Menu composition reflected restaurant image", and "Providing of corresponded value to price"were shows considerable difference according to psychological preference. And "Providing of the corresponded value to price"of Value, Price and Image Factor, indexes, types, including all the other aspects, shows the most considerable difference. Therefore, all market of Family Restaurant when inventing or designing a menu, they should consider restaurant′s concept and image to manage a menu, and keep in mind that all customer take "value"at up most importance.

• Korean Journal of Human Ecology
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• v.13 no.6
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• pp.1047-1053
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• 2004

The purpose of this study is to assess students' attitude and satisfaction of university foodservices. We conducted a survey for this study using questionnaires with 400 university students. A total of 344 students answered with a usable response rate of 86.0%. We performed a statistical data analysis using SPSS program for $X^{2}-test$ and t-test. Students visited university foodservices more frequently for lunch than for breakfast or dinner. Students' food choice depended on taste of food. The main reasons for using university cafeteria included 'a low price' and 'economy of time'. The prior complaint factor on university foodservices was 'taste of food'. Students were more satisfied with a price than other factors. They marked 'a variety of menu' as the least satisfied. The matters, such as 'more delicious food' and 'more various menu' were pointed out for improvement. In conclusion, developing tastier food and diversifying a menu are required to enhance the quality of university foodservices.

• Culinary science and hospitality research
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• v.23 no.5
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• pp.77-86
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• 2017

The purpose of this study is to investigate the impact of selection attributes of dessert cafes on experience value and revisit intention. A survey was conducted from June 3, 2017 to the June 27th, 2017 with dessert cafe users. Out of 200 responses collected, a total of 157 responses was included for the data analysis. The results from this study are as follows. First, it was found that, the menu features of selective attributes of dessert cafes only affected experience value. However, healthy menu, price, and atmosphere of selective attributes of dessert cafes didn't impact on experience value. Second, experience value of dessert cafes significantly influenced revisit intention. As a result, managers of dessert cafes need to develop an effective marketing strategy to improve the customer experience value so that customers can revisit their dessert cafe and will also develop the unique menu.

• Culinary science and hospitality research
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• v.10 no.2
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• pp.121-134
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• 2004

The research on set menus served at Japanese restaurants at special-rate hotels around Gwangju and Jeonla Province suggests problems and rooms for improvement through examination of the current status of set menus at Japanese Restaurant in hotels of Gwangju and southern Jeonla province, prime cost, and sales volume. Advantageous points of course menus served at Japanese restaurants at hotels are as followings: a variety of courses are available; ingredients can reflect seasonal change; clients are satisfied with food at reasonable cost; and it results in sales increase. Based on such measures, more efforts should be made in order to advance preference and satisfaction with menus, cut back on prime cost, and maximize sales volume.

• Journal of the Korea Safety Management & Science
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• v.11 no.3
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• pp.87-94
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• 2009

Today's driver information system often features a rotary control type as a main controller for menu navigation. Population stereotype should be clearly understood in designing those systems to minimize the misunderstanding by the operator. This paper investigates stereotypes for rotary controlled menu interfaces and influences of contributing principles. A human factors experiment was conducted using various configurations of control-display layouts, cursor shapes/positions, and movement directions. The results showed that the control should be on the left of the display, with a rightward icon on the right side of the cursor, in order to match the stereotype. Regression analysis indicated that Warrick's principle was the most influential principle, followed by Icon shape, Icon position, Clockwise away, and Clockwise up principles. This study provides valuable information to designers of menu-based systems such as driver information systems and main control rooms that uses rotary controls.

• Journal of the East Asian Society of Dietary Life
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• v.19 no.4
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• pp.650-657
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• 2009

This study was designed to determine the effects of meat country-of-origin on the perceived quality, perceived risk, perceived value, and purchase intension of restaurant menu items. A total of 237 university students in Seoul were used in the final statistical analyses, which included factor analysis, ANOVA and Duncan's test. The results were as follows: First, in the case of perceived quality, the participants gave higher evaluations of restaurant menu items better when the origin of the foodstuff was Korea. Second, the effects of origin on perceived value were not statistically significant. Third, the effect of origin on the purchase intension of fried chicken was statistically significant, but the effects of origin on the purchase intension of boned rib and fillet were not statistically significant. Lastly, the limitations of this study and suggestions for further research are presented.

• Journal of Nutrition and Health
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• v.57 no.3
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• pp.349-364
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• 2024

Purpose: This study used the Analytic Hierarchy Process to evaluate the relative importance of the factors that school nutrition teachers and dietitians consider during menu planning for school foodservices across various educational levels. Methods: An online survey was conducted from December 2023 to January 2024. The hierarchical structure for school foodservice menu management was developed through content analysis, consisting of five high-level categories and 3-4 low-level factors. Questionnaires were distributed to 395 nutrition teachers and dietitians from kindergarten, elementary, middle, and high schools nationwide. One hundred and sixty-six responses were received, resulting in a 42.0% return rate. These responses were analyzed using Microsoft Excel and SPSS Statistics. Results: The most commonly referenced sources for school foodservice menu planning were 'menus obtained from websites' (19.4%). The most significant challenge encountered was 'incorporating students' preferences' (18.6%). In the hierarchy of categories considered for school foodservice menu management, 'employees and facilities' ranked highest (0.2347), followed by 'preference' (0.2312), 'nutrition balance' (0.2027), 'cooking process' (0.1726), and 'food materials' (0.1588). Within each category, the top-ranked factors were 'employees' cooking skills' (0.3759), 'students' preferences' (0.4310), 'dietary reference intakes' (0.4968), 'foodservice hygiene' (0.4374), and 'food costs' (0.4213). The study also compared the relative importance of factors according to the educational levels, and the top-ranked factors were the same across all educational levels. In particular, 'students' preferences', 'dietary reference intake', and 'food costs' aligned with the top three challenges in school foodservice menu planning. Conclusion: Enhancing working conditions for school foodservice employees and developing menu planning methods that accommodate students' preferences are necessary. These findings will provide foundational data for future school foodservice menu management strategies.

• Korean Journal of Community Nutrition
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• v.5 no.1
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• pp.83-91
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• 2000

The aims of this study are to evaluate the quality of hospital food services and the evaluate the quality in selected hospitals trough the use of the questionnaires. A survey of 30 hospital food and nutrition service department was undertaken and detailed information was collected from each, including, surveys of 1, 016 patient. Statistical data analysis was completed using the SAS/win 6.11 package for descriptive analysis, t-test X$^2$-test ANOVA principal component analysis , and cluster analysis and cluster analysis. In the case of patient satisfaction with hospital food and food services, overall satisfaction scores of male and female were 3.54 and 3.45 showing higher levels than the average score(3.00) The aspect of the food and food service which received the lowest ratings by patients was 'meal rounding while dining'. After conduction of factor analysis of variables affecting the patients meal satisfaction 3 groups including the 'menu satisfaction factor', 'service satisfaction factor ' and 'nutrition management satisfaction factor ' were selected. 3 clusters were categorized by the 'service cluster' 'nutrition management cluster', 'men cluster', and 'menu nutrition service cluster' after conducting a cluster analysis with influencing variables affecting patients meal satisfaction. The overview results of patient satisfaction by cluster were : in the case of the service group, such factors as taste, portion size, dealing with complaints while dining meal rounding while dining should be managed with caution In case of the nutrition management group, such factors as taste, portion size, temperature of the food intake, and dependence on hospital food should be managed with care, In the case of the menu groups, such factors as punctuality of meal times, contaminated substances in meals and serving mistakes, cleanliness of dishes, kindness of the server meal rounding while dining should by particularly managed with importance.