Fig 1.
The ASF news frequency in Korea.
Source: BIGkinds provided by the Korea Press Foundation (www.bigkinds.or.kr).
Fig 2.
Flow chart for sentiment index.
Table 1.
Descriptive analysis of variables.
Fig 3.
The normalized weekly basis sentiment index.
Note: The straight line represents the weekly ASF news sentiment index and the dotted line represents the weekly pork prices. The left y-axis represents pork prices and the right y-axis represents the ASF news sentiment index.
Table 2.
Unit root test results.
Table 3.
Johansen cointegration test results.
Fig 4.
Note: The first, second, and third graphs show the responses of pork, chicken, and beef prices to the sentiment index, respectively.
Table 4.
Variance decompositions of meat price variables to the ASF news.