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.
Sunday, April 21, 2019
poisson model and ppml model
dear all
I hope to use gravity ppm model
but I can't use it with fixed effect because of collinearity
I wonder what is the difference between Poisson and ppml model
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