JSM 2005 Online Program

Abstract #302594

This is the preliminary program for the 2005 Joint Statistical Meetings in Minneapolis, Minnesota. Currently included in this program is the "technical" program, schedule of invited, topic contributed, regular contributed and poster sessions; Continuing Education courses (August 7-10, 2005); and Committee and Business Meetings. This on-line program will be updated frequently to reflect the most current revisions.

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Activity Number:	302
Type:	Invited
Date/Time:	Tuesday, August 9, 2005 : 2:00 PM to 3:50 PM
Sponsor:	Section on Survey Research Methods
Abstract - #302594
Title:	Computer-Assisted Methods for Collecting Geographic Data Using Photographic Backdrops
Author(s):	Sarah Nusser*+
Companies:	Iowa State University
Address:	Department of Statistics, Ames, IA, 50011-1210, USA
Keywords:	data collection ; CASIC ; geospatial data
Abstract:	Agricultural and environmental surveys rely on photographic imagery as a backdrop during survey data collection. For example, enumerators work with farmers to delineate field boundaries on photos, and field staff delineate natural resource features to obtain area or linear measurements. We consider the design of digital protocols for collecting geographic feature data and the associated computer-assisted survey instrument. Challenges result from the complex and nonlinear nature of this task relative to collecting numeric and coded data via an interview. Flexibility in the user interface is more critical to successful delineation of features, but it must be tempered with protocol enforcement and the demands flexibility can place on the user. Capturing topological relationships among geographic features also is difficult, and software tools for delineating boundaries can be complimented with data processing to balance usability and accuracy considerations. These and other issues will be illustrated with digital geographic data collection protocols for the National Resources Inventory.

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