Updated 2 digit NAICS aggregation scheme?

Hi - a quick follow on question....are there any changes to the sectors that IMPLAN renders exogenous in the model (for example...what is a private household? Is that a value added component? Other state government enterprises? other federal government enterprises?

Hi Rebecca, Thank you for your post! There is an aggregation scheme available for the 2013 data. If you could please delete your Structural Matrix and then replace it with the one attached to this post; you will be able to aggregate: http://implan.com/index.php?view=download&alias=273-implan-structural-matrices-2013-2&category_slug=version-three-files&option=com_docman&layout=table&Itemid=1480. You will need to create a New Model. We apologize for the inconvenience. Structural Matrix: C Drive > Users > Users Name > App Data > Local > MIG > IMPLAN > System Data. Place the Structural Matrix file in the system data folder. For your 2nd question. There has not been a change to the default Multiplier build. It is still, by default, only includes the 9 Household Income Groups and EC and PI (you can view this in the Multipliers drop-down on the Model Overview). Only in the rarest of cases is it appropriate to endogenize other Institutions. Information about Multipliers: http://implan.com/index.php?option=com_content&view=category&id=338 Thanks!

Never mind. Found it. Thanks. Could I please have the NAICS aggregation schemes in an excel file? I looked in Downloads and couldn't find it there. Thanks!

Hi. Thank you for your post! Here is the [url=http://implan.com/index.php?view=download&alias=25-2013-naics-to-implan-bridge&category_slug=536&option=com_docman&Itemid=1764]link [/url] for the BEA's 2012 NAICS to IMPLAN 536 Sectors. Please let us know if this is not what you needed! Thanks

I placed a new structural matrix into the file "System Data" and build and run the model again, but it does not "see" the new aggregation in "Aggregation Library". How do I make the model "to look" into a new structural matrices file?

Hello, It sounds like you may be running the Implan Appliance with software version 3.1. You can try replacing the Structural Matrix in 2 locations. 1. The Appliance: :Implan3 Appliance\Implan System Data(hidden)\ 2. The C Drive: C:\Users\User Name\AppData (hidden)\Local\MIG\Implan\Data Files\ - Then try the aggregation scheme in a New Model. Please feel free to call 651-439-4421 line 2 to speak with a technical support agent. We would like to use the remote desktop web application found at http://www.logmein123.com to assist us in troubleshooting. Our business hours are Monday through Friday from 8:30AM to 6:00PM Easter Standard Time. Best regards, IMPLAN Group Staff

After I included a new structural matrix, re-built the model and run through exactly the same input data, my results changed, including detailed not aggregated results? Why? In what way the structural matrix changing the results? I also checked my labor income multipliers, they are different - why the multipliers changed? I run two models - for the whole state and 8 counties of the state. The indirect and induced results for 8 counties are larger than for the whole state. I've checked the multipliers - the multipliers for 8 counties are larger than for the state - how it can be? I am attaching my comparison file. If possible, I would like to talk to someone. [attachment=640]h48c9c1c.xls[/attachment]

HI. I apologize for the frustration of difference in values. There are a couple of things that we want to check about why you are getting different numbers, with a new Structural Matrix so we can make sure that we provide you with accurate through answers. In order to do that, I need to have access to your two Models and get a little more information about what you are doing from those Models. As your regards you latter question, this is actually a common question and can occur for several reasons, we can address this more completely once we've seen your Models, but generally this occurs when key Industries in the Direct or the first-round Indirect Effects are all located in the key counties you've identified in your first Model. Since the state values are aggregate averages of all the counties, even though they represent larger regions, they can certainly have smaller Multipliers as a result of Aggregation Bias, and increased demand relative to supply. This is why when you are comparing state to sub-state Models we recommend using MRIO. [url=http://implan.com/index.php?option=com_content&view=article&layout=edit&id=367]Multi-Regional Input-Output Analysis[/url] allows you to keep the identity of the core economic region while also seeing how the change in the core regions ripples out to the Rest of State (ROS). I left a message for you but I also wanted you to have this information. Thanks!