Updates to Industry by Industry Matrices
I have read the two latest papers on how the regional purchase coefficients were produced and the 2011 paper indicated they were produced using the last RPCs and 2009 IMPLAN data. Could you tell me how these relate to the 2013 IMPLAN data and in particular the 2013 Regional Industry by Industry matrices?
Could you indicate what year for each of the data sources will be used in your 2013 release of the IMPLAN data? In Ohio, we have had recent changes to the local economy because of shale drilling, how are these incorporated into the IMPLAN data? If they aren’t, how can we incorporate them into the IxI matrices?
Thank you.
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IMPLAN SupportHi. Thank you for your post. For the trade-flow model, which is the default model IMPLAN uses to estimate RPCs and multipliers, the RPCs are estimated each year using the latest data. The IxI matrix is constructed from whatever dataset is used to create an IMPLAN model. So a model that uses 2013 IMPLAN data has RPCs, multipliers, and an IxI matrix that are estimated using IMPLAN 2013 data. IMPLAN 2013 data incorporates the most recent data available from all sources. Some of these data sources are lagged, and we project them based on more recent trends. Please consult this page for explanations of various parts of the data production process: http://implan.com/index.php?option=com_content&view=article&id=821&Itemid=1555 The 2011 paper (if you are referring to the MCRSA Proceedings Paper) was discussing the Econometric RPC method, which is an alternative to the Trade Flow model method and is used for zip-code and congressional district models since our trade flow model does not currently estimate trade flows for those geography types. Here is the latest paper that explains the Trade Flow model: https://implan.com/index.php?view=download&alias=138-v3-gravity-model&category_slug=version-three-files&option=com_docman&Itemid=1480 Thank you.0
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