Tuesday, June 14, 2011

Class Participation Lab - Summarize a Technical Paper

Assignment: Summarize Exploratory Spatial Data Analysis Techniques for Examining Urban Crime.  http://www.geography.hunter.cuny.edu/~dougwill/CRIME/web_pdfs/intro_ESDA_murray-etal2001.pdfAlan T Murry, Ingrid McGffog, John S Western, and Patrick Mullins.

This article provided an in depth detailing of “approaches for better understanding relationships of crime occurrences using a GIS and quantitative techniques”. The authors clearly explained the challenges of producing a quality GIS product (Examining Urban Crime): establishing what data is needed to meet the customer’s needs; determining how much data to put on the map while setting aside the basic map design theory; trying to sort through the wealth of data to be displayed by a GIS; and making a map or GIS product. The daunting goal of using a GIS in support of crime analysis is to produce products that tell the right story for the given audience.

I was most surprised to learn that with respect to the GIS there are no standard models for examining urban crime. There are many generalized assumptions that can be made but each must be tested for validity, accuracy, and precision. The panoply of data options combined with the ever growing GIS capabilities makes this kind of work quite exciting. GIS is still in its infancy and only in the last few years emerging and gaining acceptability in the study of crime events and the relationships to the physical surroundings.

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