This proposal is for modeling workshop for beginning to intermediate property valuation modelers. Workshop will consist of eight 90 minute sessions. Sessions will include 40 to 50 minutes instruction of core concepts and 30 to 40 minutes of practical hands-on coding in either of two commonly used platforms - R and SPSS (users will split by preference), followed by a 10 minute wrap-up / Q&A session.
This workshop was offered at the 2021 conference. It was given over a period of three days, and was very well received.
LEARNING OBJECTIVE: Participants will work with a sample set of 3,200 sales which will require scrubbing and transformation for use in a model. Data set will include attributes for Location; Transaction date; Type of Improvement; Building size; Lot size; Improvement Condition; Garage type and spaces; Central Air; Distance to Park and Distance to Transportation. By the end of the workshop, participants will have built a simple, model that performs well, and will leave with a template for building a residential sales model which should be usable with any typical CAMA dataset. Participants will have a good foundation in modeling concepts.
We have compiled a group of industry SME’s for the two residential modeling sessions that will be presented over two days. Please note that the speakers identified below might only be presenting in this sessions or the second day:
https://gisvaltech2022.sched.com/event/rgaV/residential-modeling-using-spss-or-r-full-day-workshop-sessions-5-8 The session order will be finalized in January.
BRIEF OUTLINE: - Session 1 - General Introduction to Modeling Principles
Moderator: Jennifer Rearich
Instructors: Kevin Keene, Director of Mass Appraisal and Analysis, Office of Property Assessment - City of Philadelphia
Paul Bidanset, Ph.D. Candidate, Founder & Executive Director, Center for Appraisal Research and Technology
SPSS Lab: John Mulvihill and Kevin Keene
R Lab: Josh Myers and Paul Bidanset
- Session 2 - Working with Data
Moderator: Paul Bidanset
Instructors: Jennifer Rearich, CAMA Regression Modeler, Maricopa County, Phoenix, AZ
Josh Myers, President, Josh Myers Valuation Solutions LLC, Chesapeake, VA
SPSS Lab: Jennifer Rearich and Tyson Dziob
R Lab: Josh Myers and Guy Thigpen
- Session 3 - Binary and Categorical Transformations
Moderator: John Mulvihill
Instructors: Jennifer Rearich, CAMA Regression Modeler, Maricopa County, Phoenix, AZ
Kevin Keene, Director of Mass Appraisal and Analysis, Office of Property Assessment - City of Philadelphia
SPSS Lab: Guy Thigpen and Kevin Keene
R Lab: Paul Bidanset and Jennifer Rearich
- Session 4 - Scalar Transformations
Moderator: Guy Thigpen
Instructors: Tyson Dziob, Regression Modeler, Maricopa County, Phoenix, AZ
Josh Myers, President, Josh Myers Valuation Solutions LLC, Chesapeake, VA
SPSS Lab: Kevin Keene and Bob Gloudeman
R Lab: Paul Bidanset and Josh Myers
HANDS-ON: SPSS or R
PREREQUISITES: None
TARGET AUDIENCE: Beginning to intermediate property valuation modelers
