SPATIAL DATA INTEGRATION FOR LOW-INCOME WORKER ACCESSIBILITY ASSESSMENT: A CASE STUDY OF THE CHICAGO METROPOLITAN AREA

This paper describes a spatial data integration application for the policy issue of low-income worker accessibility in urban areas. Entry-level job growth, which is appropriate for the skill level of welfare clients and low-income individuals, is occurring far away from inner city neighborhoods where many low-income families live. The job-rich areas often have limited affordable housing or transit connections. There are three strategies for overcoming the spatial mismatch between jobs and home locations: (1) bring jobs closer to low-income neighborhoods; (2) bring affordable housing solutions near job-rich areas; and (3) provide transportation connections between jobs and housing. A database integrating information supporting all three strategies can help identify sub-markets that are likely to benefit most from a particular strategy. This paper describes the architecture and data components of a geographic information system (GIS) that ties together data from the transportation, affordable housing and economic development sectors. A survey of urban geospatial data managers in the Chicago area will drive the data requirements of the integrated system. Data quality issues of the integrated geospatial data will be described, focusing on coverage/scope, consistency, completeness, accuracy, timeliness and accessibility. Since this GIS is an integration of existing geospatial data, the scope of conflation tools and the impact of spatial aggregations in the disparate input databases will be documented. The most important aspect of data integration is to ensure that data quality is not compromised to satisfy short-term goals/needs of decision makers. Barriers to data collection are discussed, and examples are given of the value-added information emerging from the integration process.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 12p
  • Monograph Title: MID-CONTINENT TRANSPORTATION RESEARCH SYMPOSIUM (AMES, IOWA, AUGUST 21-22, 2003). PROCEEDINGS

Subject/Index Terms

Filing Info

  • Accession Number: 00964687
  • Record Type: Publication
  • ISBN: 0965231062
  • Files: TRIS
  • Created Date: Oct 12 2003 12:00AM