搜索结果: 1-5 共查到“知识库 经济学 gravity”相关记录5条 . 查询时间(0.06 秒)
Modeling the International-Trade Network: A Gravity Approach
International Trade Network Gravity Equation Weighted Network Analysis Topological Properties Econophysics
2011/12/28
This paper investigates whether the gravity model (GM) can explain the statistical properties of the International Trade Network (ITN). We fit data on international-trade ows with a GM speci cation u...
THE GRAVITY MODEL AND THE PROBLEM OF ZERO’S IN AGRIFOOD TRADE
Gravity model selection bias Agrifood Trade Heckman Selection Model marginal effects
2014/4/11
In the analysis of bilateral trade flows, reported trade of zero or missing observations are quite common and this is a problem when estimating log-linear gravity equations. This has caused many resea...
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...
The International-Trade Network: Gravity Equations and Topological Properties
International Trade Network Gravity Equation Weighted Network Analysis Topological Properties
2010/11/2
This paper begins to explore the determinants of the topological properties of the international - trade network (ITN). We fit bilateral-trade flows using a standard gravity equation to build a “resid...
Gravity Dual for Reggeon Field Theory and Non-linear Quantum Finance
Gravity Dual Reggeon Field Theory Non-linear Quantum Finance
2010/11/1
We study scale invariant but not necessarily conformal invariant deformations of non-relativistic conformal field theories from the dual gravity viewpoint. We present the corresponding metric that sol...