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Modeling the Onion Market Using Sentiment Analysis with Deep Learning 利用深度学习的情感分析对洋葱市场进行建模
Korean Agricultural Economics Association Pub Date : 2022-09-30 DOI: 10.24997/kjae.2022.63.3.33
Sumin Cho, J. Oh, Jong-Hyun Baek, B. Soon
{"title":"Modeling the Onion Market Using Sentiment Analysis with Deep Learning","authors":"Sumin Cho, J. Oh, Jong-Hyun Baek, B. Soon","doi":"10.24997/kjae.2022.63.3.33","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.3.33","url":null,"abstract":"This study analyzed the effect of the sensitivity of news related to onions on producers' decision-making on cultivation areas and market supply and demand. We collected onion-related article data and derived the sentiment index through sentiment analysis using neural networkbased learning. We estimated the cultivation area function, including the sentiment index we made. We analyzed the impact of news sensitivity on the onion market by constructing an onion market supply and demand model. Then, we gave a sentiment index shock to the cultivation area to examine the impact on the onion market. We also explored the sensitivity analysis to emphasize the news in June, July, and August plays an important role in the supply side. To the best of our knowledge, our approach using sentiment index in the agricultural model is the first trial. Therefore, our study can introduce an approach to improve the accuracy of modeling for agriculture and apply it to the area of agricultural economics.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122254201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Rural Income Growth and Convergence in Vietnam 越南农村收入增长与趋同
Korean Agricultural Economics Association Pub Date : 2022-09-30 DOI: 10.24997/kjae.2022.63.3.99
Oh-Sang Kwon, Jongwook Lee, Hyo Jae Shin, Tae Soo Choi, Han Na Jeong
{"title":"Rural Income Growth and Convergence in Vietnam","authors":"Oh-Sang Kwon, Jongwook Lee, Hyo Jae Shin, Tae Soo Choi, Han Na Jeong","doi":"10.24997/kjae.2022.63.3.99","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.3.99","url":null,"abstract":"We investigated the growth and convergence in Vietnamese rural income using the household survey data, VHLSS of the years, 2004 and 2018. The regional convergences in the district level income sources were estimated and tested. We found that real agricultural income, off-farm income, and the whole farm income all increased and converged, but the convergence rate in off-farm income was much higher than that in agricultural income. The convergence in income implies that an overall increase in rural income in Vietnam will contribute to reducing poverty rate. We also found that the geographic characteristics are the main determinants of agricultural income growth rates. On the other hand, ethnic minorities and people living in poverty have difficulties in developing off-farm income sources despite the convergence tendency of off-farm income.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129147498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determinants of Visit Frequency and Selection of Online Information Source of Rural Travelers 农村旅游者访问频率的影响因素及在线信息源选择
Korean Agricultural Economics Association Pub Date : 2022-09-30 DOI: 10.24997/kjae.2022.63.3.81
Jeonghoi Heo
{"title":"Determinants of Visit Frequency and Selection of Online Information Source of Rural Travelers","authors":"Jeonghoi Heo","doi":"10.24997/kjae.2022.63.3.81","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.3.81","url":null,"abstract":"This study investigates the determinants of visit frequency and selection of online information source of those who visit rural areas for outing or travel. As for the information source, online media that have recently been used with a high rate of use are included: internet(website, blog), Facebook, YouTube, Instagram. The ordered probit model is used to analyze the factors that determine the frequency of visiting rural areas, and the multivariate probit model is used to analyze visitors’ choice behavior of online media selection to obtain travel information. As one of main explanatory variables, activities that visitors consider important during their trip are included.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130111906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Predictive Model for Farmland Purchase/Rent Using Random Forests 基于随机森林的农地购买/租赁预测模型
Korean Agricultural Economics Association Pub Date : 2022-09-30 DOI: 10.24997/kjae.2022.63.3.153
Ho-Jung Jeong, Youngjune Kim, soktay lim
{"title":"A Predictive Model for Farmland Purchase/Rent Using Random Forests","authors":"Ho-Jung Jeong, Youngjune Kim, soktay lim","doi":"10.24997/kjae.2022.63.3.153","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.3.153","url":null,"abstract":"This study contributes to guidance for understanding farmland purchase and rent decisions in Korea via an analysis using a machine learning tool, Random Forests: A Supervised Machine Learning Algorithm. Farm Household Economy Survey is employed to predict the relationship between farmland acquisition and farm household economic characteristics. Our main findings are two folds. First, a farmland purchase decision is positively related to transfer incomes, the value of inventory & fixed assets, and the value of farmland that farmers owned. Second, a farmland rent decision is also positively associated with a rent paid in a prior year, revenue from field crops, inventory and agricultural assets, and transfer incomes.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126283758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Welfare Effects of Changing the Payment Method of Food Assistance Program from Discount and In-kind Transfer to e-voucher: A Graphical Analysis 粮食援助支付方式由折扣和实物转移到电子凭证的福利效应:一个图形分析
Korean Agricultural Economics Association Pub Date : 2022-09-30 DOI: 10.24997/kjae.2022.63.3.1
Minseong Kang, B. Ahn
{"title":"The Welfare Effects of Changing the Payment Method of Food Assistance Program from Discount and In-kind Transfer to e-voucher: A Graphical Analysis","authors":"Minseong Kang, B. Ahn","doi":"10.24997/kjae.2022.63.3.1","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.3.1","url":null,"abstract":"This study proposes a theoretical method for evaluating the effects of food assistance programs in terms of consumer welfare. In particular, we develope a mechanism to derive the equivalent variation to measure the welfare effects of changing the payment method of food assistance programs from discount and in-kind transfer to e-voucher. Further, in order to intuitively present the aforementioned theoretical discussion, this study attempts to visualize the changes in utility and budget constraint based on the economic theory on consumer choice. The results of the graphical analysis show that beneficiaries can achieve a higher level of utility when the benefits are paid through e-voucher system rather than through in-kind transfer. However, it is found that the sign of the welfare effect is varied across the characteristics of consumers when changing the payment method from discount to e-voucher.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134340546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analyzing Arbitrary Time Relationship and Warping between Weight of Highland Chinese Cabbage and Growth Environment Variables 大白菜体重与生长环境变量的任意时间关系及翘曲分析
Korean Agricultural Economics Association Pub Date : 2022-06-30 DOI: 10.24997/kjae.2022.63.2.67
Yoonsuk Lee
{"title":"Analyzing Arbitrary Time Relationship and Warping between Weight of Highland Chinese Cabbage and Growth Environment Variables","authors":"Yoonsuk Lee","doi":"10.24997/kjae.2022.63.2.67","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.2.67","url":null,"abstract":"The study analyzed dynamic time relationships and time warping between weight of highland chinese cabbage and growth environment variables using an arbitrary-lag causality method. \u0000During an early stage of growth, the relation between cabbage and growth environment variables is formed in arbitrary times. The bigdata used in the study are collected from the open field samrtfarm system operated by Rural Development Administration. The study applied for a dynamic time warping algorithm to measure dynamic time distances between weights of highland chinese cabbage and growth and weather variables, respectively. After that, we compared arbitrary-lag causality and fixed-lag causality. We found the existence of arbitrary-time lags between variables. In addiction, we found that the arbitrary-lag causality analysis is performed better than fixed-lag causality. \u0000Finally, we found that growth and weather variables caused cabbage weight under the arbitray-time lags, but not vice versa.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126219573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of Agricultural Market Opening and Fiscal Investment and Loans 农业市场开放与财政投贷款的影响
Korean Agricultural Economics Association Pub Date : 2022-06-30 DOI: 10.24997/kjae.2022.63.2.19
Woo-jin Song, Su-Hwan Myeong, Hanpil Moon
{"title":"Impact of Agricultural Market Opening and Fiscal Investment and Loans","authors":"Woo-jin Song, Su-Hwan Myeong, Hanpil Moon","doi":"10.24997/kjae.2022.63.2.19","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.2.19","url":null,"abstract":"In order to analyze the effect of market openness and fiscal investment & loan on economic performance indicators (real production value, real agricultural income, price volatility, and factor productivity) in the agricultural sector, we construct a panel dataset that includes the calculated index of openness for each product group (rice, fruits, vegetables, livestock) and the newly classified agricultural budget (fiscal investment & loan) by purpose and product-group during 1995~2019. \u0000This study estimates the system of equations established for each of the four performance indicators using the Seemingly Unrelated Regression (SUR) method and then compares the marginal effects of market openness and fiscal investment & loan on each performance indicator. Separate aggregation of these two key variables by product group gives sufficient observations to measure the causal relationship between economic performance and them, and the SUR method was selected to obtain efficient estimates if the error terms of each equation are correlated. Our empirical analysis shows that market openness acts in the direction of worsening all performance indicators, whereas fiscal investment & loan has a positive effect overall. In the face of further opening via RCEP and CPTPP, agricultural investment & loan in the future should be reorganized focusing on food security, rural maintenance, climate change and environment, and shared growth with related industries.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131767253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimating the Effect of the US-China Trade War on the Relationship between the Prices in the International Feed Grain Futures Markets and China’s Pork Market 中美贸易战对国际饲料谷物期货市场价格与中国猪肉市场价格关系的影响
Korean Agricultural Economics Association Pub Date : 2022-06-30 DOI: 10.24997/kjae.2022.63.2.103
Yiyang Qiao, B. Ahn
{"title":"Estimating the Effect of the US-China Trade War on the Relationship between the Prices in the International Feed Grain Futures Markets and China’s Pork Market","authors":"Yiyang Qiao, B. Ahn","doi":"10.24997/kjae.2022.63.2.103","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.2.103","url":null,"abstract":"We examine the effect of the US-China trade war on the international feed grain futures markets and China’s pork market by using the univariate GARCH model with considering the structural breaks in each market. Granger causality test and the DCC-GARCH model are applied to examine the changes in the relationship between the international feed grain futures market and China’s pork market in the presence of the trade war. The analytical results suggest that the trade war has a significant negative effect on the volatility of international soybean futures price, but it exacerbated volatility in Chinese pork prices. Our empirical results also confirm that a stable causality existed between international soybean futures market and China’s pork market in the pre-trade war period, but it was disrupted after the trade war broke out.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133196716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Consumer Preferences for Animal Welfare Certified Eggs 消费者对动物福利认证鸡蛋的偏好
Korean Agricultural Economics Association Pub Date : 2022-06-30 DOI: 10.24997/kjae.2022.63.2.83
Jae Bong Chang, Y. Lee, M. Jeong
{"title":"Consumer Preferences for Animal Welfare Certified Eggs","authors":"Jae Bong Chang, Y. Lee, M. Jeong","doi":"10.24997/kjae.2022.63.2.83","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.2.83","url":null,"abstract":"This study estimates consumers’ willingness to pay for several eggs attributes, with primary focus on animal welfare. A nationwide online survey of 1,000 consumers was conducted to determine consumers’ preferences for animal welfare certification and identify perceptions of animal welfare claims and certifications factors affecting consumers’ willingness to pay by using the mixed logit model. The results from a choice experiment indicate that consumers place significant value on animal welfare certification, package size, expiration date and prices. We find a high degree of heterogeneity in willingness to pay for free-range and cage-free eggs. The mean premium for free-range eggs and cage-free eggs are 2,672KRW and 1,862KRW per 10 eggs, respectively. Our results also indicate that consumer perceptions of animal welfare and certification are associated with a willingness to pay. Results suggest there is potential for increasing the market share for animal welfare certified eggs.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114864917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Analysis of the Efficiency of Premium Subsidy for Crop Insurance: Focusing on the Apple 农作物保险保费补贴效率分析——以苹果为例
Korean Agricultural Economics Association Pub Date : 2022-06-30 DOI: 10.24997/kjae.2022.63.2.1
Hong-Gi Chae, Se-Hyuk Kim, Wonho Chung, Tae-kyun Kim
{"title":"An Analysis of the Efficiency of Premium Subsidy for Crop Insurance: Focusing on the Apple","authors":"Hong-Gi Chae, Se-Hyuk Kim, Wonho Chung, Tae-kyun Kim","doi":"10.24997/kjae.2022.63.2.1","DOIUrl":"https://doi.org/10.24997/kjae.2022.63.2.1","url":null,"abstract":"The Korean government's insurance premium subsidies for crop insurance increased the insurance participation rate, but brought a financial burden. This study analyzes budget reduction measures (the differential support system, the premium subsidy cap system, the same subsidy rate reduction) to alleviate the financial burden and efficiently operate the government budget. For the analysis, yield distribution functions of individual apple farms were estimated, and simulations were conducted. \u0000Main findings are summarized as follows. First, the differential support system has the greatest effect of improving efficiency among the budget reduction measures, and there is little reduction in the insurance participation rate. Second, the premium subsidy cap system has little effect on improving efficiency, and there is a small change in the participation rate. Third, the same subsidy rate reduction has little effect on improving the efficiency, and the participation rate decreases significantly. The differential support system is considered the most effective way to reduce the budget and is expected to have the lowest resistance from farmers. It is proposed to establish the system gradually from the low level to settle the system stably.","PeriodicalId":136411,"journal":{"name":"Korean Agricultural Economics Association","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122221235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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