Visualizing doc graph in gephi june 2013
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The document presents an analysis of DocGraph, a directed graph visualization of Medicare providers based on FOIA data. It provides metrics such as an average total degree of 52.8 and a total of 940,492 providers and 49,685,810 shared edges. Additionally, it discusses generating GraphML files for compatibility with various tools and includes links for further resources and datasets.
Visualizing doc graph in gephi june 2013
- 1. Analyzing DocGraph in Gephi Janos G. Hajagos Stony Brook School of Medicine 1 NYC Open Data Meetup June 24, 2013
- 2. DocGraph • Based on FOIA request to CMS by Fred Trotter • Medicare providers (more than doctors) • CY 2011 date of service • Share 10 or more patients in a 30 day forward window • Initial access restricted to MedStartr funders but as of June 2013 open access 2
- 4. DocGraph by the numbers • Directed graph • Average total degree 52.8 • 940,492 providers (graph nodes/vertices) • 49,685,810 shared edges 4
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- 7. NPPES • National Plan and Provider Enumeration System • Source of NPI (National Provider Identifier) • Information is entered and updated by provider • CSV file with 314 columns • MySQL load script generated by Python script to normalize database 7
- 9. Core nodes 9
- 10. Leaf nodes 10
- 14. Generating GraphML • XML based file format for graphs • Readable by a large number of tools – Gephi – Mathematica – igraph (R) • NetworkX Python library for graphs can easily export to GraphML 14
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- 16. 16 Gephi
- 17. Subset defined from 2 Brooklyn zip codes (11215 - Park Slope & 11212 - Brownsville) 17
- 18. Links http://strata.oreilly.com/2012/11/docgraph-open- social-doctor-data.html (information) https://github.com/jhajagos/DocGraph (code) https://github.com/ftrotter/DocGraph (data) https://groups.google.com/forum/#!forum/docgrap h (mailing list) http://bit.ly/1459NXn (sample Brooklyn GraphML file) http://strataconf.com/rx2013/public/schedule/deta il/29840 (StrataRX workshop with Fred Trotter) 18