搜索结果: 1-1 共查到“应用经济学 gravity model”相关记录1条 . 查询时间(0.261 秒)
DOES THE GRAVITY MODEL SUFFER FROM SELECTION BIAS?
Gravity model selection bias Agrifood Trade Heckman Selection Model marginal effects
2014/4/11
When analyzing bilateral trade flow data, zero trade flows are quite common and problematic when a gravity equation is estimatedwith a log-linear functional form. This has caused many researchers to e...