1 Dec
2017
1 Dec
'17
9:15 a.m.
Totally agree with you Ed. I think the Washington Post headline is a dose
of hyperbole. I have a question about spurious correlations and as far as I
know the ACS does not ask what type of vehicle is there in the household so
this paragraph in their paper gave me pause:
Using ACS and presidential election voting data for regions in our training
set, we train a logistic regression model to estimate race and education
levels and a ridge regression model to estimate income and voter
preferences on the basis of the collection of vehicles seen in a region.
This simple linear model is sufficient to identify positive and negative
associations between the presence of specific vehicles (such as Hondas) and
particular demographics (i.e., the percentage of Asians) or voter
preferences (i.e., Democrat).
On Fri, Dec 1, 2017 at 9:38 AM, Ed Christopher <edc(a)berwyned.com> wrote:
Interesting stuff Krishnan--
If their basic assumption were true, that vehicle ownership somehow
translates into demographics (ie voter behavior), then why not just cut
Google out and process vehicle registration files. It seems to me that
would be a lot easier and cheaper. Then again you have to buy the basic
assumption. Also, if you look at precinct by precinct voter behavior two
things will surprise you. First, precincts are not all one color (red or
blue) in most places and the number of people who do vote are very small
when considering the total population. While I found this work interesting
I would not be out their trying to oversell what its capabilities are
without a whole lot more work and research. As I see it we have a very long
way to go before we have something that is a kin to the ACS and all its
by-products.
On 11/30/2017 8:39 PM, Krishnan Viswanathan wrote:
This will interest people in this group and also foster discussion about
the methods used. The article itself has a link to the paper.
Scientists can now figure out detailed, accurate neighborhood demographics
using Google Street View photos
http://wapo.st/2AnuP9L
Krishnan Viswanathan
5628 Burnside Circle
<https://maps.google.com/?q=5628+Burnside+Circle+%0D+Tallahassee+FL+32312&entry=gmail&source=g>
Tallahassee FL 32312
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Ed Christopher
Transportation Planning Consultant708-269-5237 <(708)%20269-5237>
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Krishnan Viswanathan
5628 Burnside Circle
Tallahassee FL 32312