BJ Data Tech Solution

Specialized on Data processing, Data management Implementation plan, Data Collection tools - electronic and paper base, Data cleaning specifications, Data extraction, Data transformation, Data load, Analytical Datasets, and Data analysis. BJ Data Tech Solutions teaches on design and developing Electronic Data Collection Tools using CSPro, and STATA commands for data manipulation. Setting up Data Management systems using modern data technologies such as Relational Databases, C#, PHP and Android.

Saturday, July 4, 2020

Can PPML be used beyond gravity models?

Dear All,

I am helping a friend with some Stata coding. I am myself not an expert.

They have a count based dependent variable which captures the number of entries by a firm in a country in a year. The xtpoisson and xtnbreg is not working despite the data has ~98% zeros in DV.

Can they use PPML ?

thanks.

BJ Data Tech Solution

Saturday, July 4, 2020

Can PPML be used beyond gravity models?

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