Assorted Posts:

Long overdue status update
SNM Community Meeting #2 on May 23rd
Let's spice things up a bit
Report updated to v3.1
Single Closest School Assignment
Hard Boundaries in 2014/15
A Very Simple Equation
The Soft Neighborhood Model
The Soft Neighborhood Model
for Portland Public Schools

The Soft Neighborhood Model is:

We have prepared a 2-page overview:

We are working on having this overview translated into other languages. If you are fluent in another language and would like to help, send us an email. Our profuse thanks goes to Daodao Zhang for the translation into Chinese!

The most comprehensive document describing the Soft Neighborhood Model is our original report:

"The Soft Neighborhood Model: A Dynamic Enrollment Balancing Framework"

This document is continually evolving. Version 3.0 of this document revamps the experimental results on real PPS data, using map-routed driving distances, computing additional metrics, and comparing several SNM configurations to historical results. Version 2.0 of this document includes a new section explaining how this model can be used to handle acute enrollment problems (now Section 8, originally Section 6).

Our reference implementation of the Soft Neighborhood Model was used to provide the results for the above paper. The code for this will eventually be available here. In the meantime, here is the historical PPS enrollment data which we used to produce those results: If anyone has obtained any redistributable new/revised/corrected data sets from PPS, please let us know. We would be happy to post them here and distribute them for you!
Please send your questions, comments, and suggestions to

Copyright 2015-2017, Brooke Cowan and Matthew Marjanovic