Using SAVI Information to Improve Decision Making in Central Indiana
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SAVICommunity Information System
Using SAVI Information to Improve Decision Making in Central Indiana
Sharon Kandris and Jay ColbertThe Polis Center at IUPUI
A Case Study: Address Verification for Sex Offenders
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SAVICommunityInformationSystem
Agenda
• SAVI Overview (Data and Tools)• Indiana Code Defining Sex Offender
Exclusion Zones• SAVI Data Available to Support Analysis• SAVI Data Methodology• SAVI Data Quality• Limitations and Warnings
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SAVICommunityInformationSystem
What is SAVI?
One-stop shop for data about Central Indiana
• Boone • Brown • Hamilton • Hancock • Hendricks • Johnson
•Madison •Marion •Morgan •Putnam•Shelby
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SAVICommunity Information System
SAVI Data
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SAVICommunityInformationSystem
SAVI is a Database
• Approximately 30 data providers• Formats: Maps, charts, tables, and reports• 19 years of data: 1988 – 2007
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SAVICommunityInformationSystem
SAVI is a Database
SAVI provides data in the following major categories:
• Arts, culture, and recreation• Demographics• Economy• Education• Health• Housing• Natural features (streams, rivers, etc.)• Political and administrative boundaries• Public assistance• Sites, programs, and agencies (community assets)• Transportation and mobility
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Geographic Levels
• SAVI data are summarized by:• Counties• Townships• School Corporations• Neighborhoods• Census Tracts• Census Block Groups• City Limits• ZIP Codes
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Community Assets
• Banks• Community Development Corporations• Human Service Programs• Libraries• Licensed Day Care Centers• Licensed Home Day Cares• Local Health Departments• Parks (Points)• Places of Worship• Playgrounds (2002)• Registered Day Care Ministries• Schools• United Way Agencies
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Toxic Waste Sites:IN Department of Environmental Management
• Brownfields• Commissioner Bulletins• Confined Feeding Operations• Construction Demolition
Waste• Leaking Underground Storage
Tanks• Open Dumps • Underground Storage Tanks• Voluntary Redemption
Program Sites
• Waste Industrial Sites• Waste Restricted Sites• Waste Septage Sites• Waste Solid Active
Permitted Sites• Waste Tire Sites• Waste Transfer Stations• Waste Treatment Storage
Disposal Sites
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Health FacilitiesIndiana State Department of Health
• Ambulatory Surgery Centers• Community Health Centers• Comprehensive Outpatient Rehabilitation Facilities• Home Health Agencies• Hospices• Hospitals• Intermediate Care Facilities for the Mentally Retarded• Long Term Care Facilities• Nursing Homes • Outpatient Physical Therapy/Speech Pathology Services• Rural Health Clinics• Women, Infants, and Children (WIC) Clinics
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SAVICommunityInformationSystem
Human Service Programs Connect 2 Help (211)
• Case/Care Management• Christmas Programs• Clothing Programs• Community Centers• Continuing Education
Programs• Food Pantries• Health Education
Programs• Job Search/Placement
• Mother and Infant Care• Municipal
Services/Public Works• Outpatient Mental Health
Facilities• Senior Centers• Special Interest Clubs• Substance Abuse
Counseling• Utility Assistance• Wellness Programs• Youth Programs
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SAVICommunity Information System
SAVI Interactivewww.savi.org
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Community Profiles
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New Web Developments: Community Profiles
1,934 Community Profiles – dynamically generated• Provide an overview of the community’s
demographic composition, economy, housing, education, health, and history (when available)
County 11
Township 119
School corporation 65
Census tract 351
Census block group 1,143
Neighborhood 245
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SAVICommunity Information System
Create a Custom Community
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Custom Community Profiles
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Select:•Arlington Ave.•Emerson Ave. •42nd St.•30th St.
Street Highlighter Tool
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SAVICommunityInformationSystem
My SAVI
Users can save their data, maps, charts, etc!
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Interactive Mapping
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SAVICommunityInformationSystem
View Tabular Data
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SAVICommunity Information System
Interactive Charts & Graphs
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Charts & Graphs
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Charts & Graphs
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Charts & Graphs
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SAVICommunity Information System
Using Your Own Data with SAVIGPS Points and Addresses
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SAVICommunityInformationSystem
Mapping Your Data
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http://www.indygov.org/eGov/City/DPR/Parks/List/Stringtown+Park.htm
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SAVICommunity Information System
Reference Room - Data Links
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Data Resource Links
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Indiana Code: Defining Sex Offender Exclusion Zones
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Indiana Code
• A sex offender cannot live within 1000’ of:• School Property• Public Park• Youth Program Center
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Indiana Code: Defining “School Property”
IC 35-41-1-24.7 – “School property" defined"School property" means the following:
(1) A building or other structure owned or rented by:(A)a school corporation;(B)an entity that is required to be licensed under IC 12-17.2 (e.g., daycare or
child care) or IC 31-27 (e.g., child caring institutions, foster family homes, group homes, and child placing agencies);
(C)a private school that is not supported and maintained by funds realized from the imposition of a tax on property, income, or sales; or
(D)a federal, state, local, or nonprofit program or service operated to serve, assist, or otherwise benefit children who are at least three (3) years of age and not yet enrolled in kindergarten, including the following:
(i) A Head Start program under 42 U.S.C. 9831 et seq.(ii) A special education preschool program.(iii) A developmental child care program for preschool children.
(2) The grounds adjacent to and owned or rented in common with a building or other structure described in subdivision (1).
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SAVICommunityInformationSystem
SAVI Data: School Property
Locations of:• All Private and
Public Schools (K-12)
• Licensed Day Care Centers
• Licensed Home Day Cares
• Registered Day Care Ministries
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Indiana Code: Defining “Public Park”
• IC 35-41-1-23.7 – “Public park" defined"Public park" means any property operated by a political subdivision for park purposes (as defined in IC 36-10-1-2).
• IC 36-10-1-2"Park purposes"Sec. 2. "Park purposes" include the establishment, equipment, and operation of parks, boulevards, pleasure drives, parkways, wheelways, park boulevards, bridlepaths, playgrounds, playfields, bathhouses, comfort stations, swimming pools, community centers, recreation centers, other recreational facilities, and recreational programs.
State Parks do not meet this criteria and are not part of the exclusion zone.
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SAVI Data: Public Parks
Locations of:• Parks• Greenways and
Trails• Recreational
Facilities (2002)
Eliminate all that are not operated by a political subdivision
And Apply 1000’ Buffer
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Indiana Code: Defining “Youth Program Center”
• IC 35-41-1-29 – “Youth program center" defined(a) "Youth program center" means the following:• (1) A building or structure that on a regular basis
provides recreational, vocational, academic, social, or other programs or services for persons less than eighteen (18) years of age.(2) The real property on which a building or structure described in subdivision (1) is located.
• (b) The term does not include school property (as defined in section 24.7 of this chapter).
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SAVI Data: Youth Program Centers
Locations of:• Libraries• Youth Programs
(Connect2Help)• Community
Centers• Possibly Include
Churches with Sunday School
Apply 1000’ buffer
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SAVI Data: Simplified Model of All Restricted Residency Locations
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SAVI Data Sources
• Schools: Indiana Department of Education• Local parcel layers may be better
• Daycares: FSSA• Youth Programs: Connect2Help
• C2H is Central Indiana’s 211 agency
• Churches: Indianapolis Center for Congregations
• List of churches, but no information on youth programs.
• Libraries: Indiana State Library• Community Centers: United Way of Central
Indiana• No specifics on youth programs
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Data Methodology
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Geocoding
• The process of applying coordinates to tabular information that includes some type of ‘address’ reference.
• Allows you to ‘spatially enable’ your tabular dataset.Before Geocoding
After Geocoding
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Geocoding to Centerlines
Also known as ‘Interpolation’ geocoding since the point is calculated between 2 points along a line.
Main St100 200
150 Main St. will geocode here…
…but might actually exist here
Errors can easily reach several hundred feet
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Geocoding to Parcels
Parcel geocoding gives much higher geographic accuracy.
Addresses are placed at centroid of parcel. There is no interpolation error
Elm StM
ain
St
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Geocoding to Parcels
• Accuracy is not the only issue. Indiana code says the 1000 feet is measured from the property line, not any given point.
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Geocoding to Parcels
• Even geocoding to parcels presents problems.
• Local county parcel layers may be better sources if they have complete owner data.
Pike High School is composed of several different parcels
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Data Quality and Limitations
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Challenges
• Geocoding match rates• Data Timeframe • Completeness• Difficulty in classifying
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Challenges
• Geocoding match rates• It could be possible to have a sex offender living next to a
daycare simply because we couldn’t geocode the daycare address.
• Data Timeframe• Recreational facilities data are from 2002 with no plans to
update.• Other datasets are updated regularly (e.g., daycares) but
we should consider working directly with data providers to get data as close to real time as possible.
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Challenges
• Completeness• Identifying property that schools rent• Identifying youth programs from other sources
Many programs exist that are not included in the Connect2Help data.
• Difficulty in Classifying• Is it political subdivision?
Identifying owner is not always easy
• Does a school-owned parcel have a structure?• Parcel owner data is less complete for tax-exempt entities
such as schools and places of worship.
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Questions