JSM 2004 - Toronto

Abstract #300739

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Activity Number: 225
Type: Contributed
Date/Time: Tuesday, August 10, 2004 : 10:30 AM to 12:20 PM
Sponsor: Biometrics Section
Abstract - #300739
Title: Investigating Standard and Nonstandard Models for Remotely Sensed Cotton Insect Data
Author(s): Robert Downer*+
Companies: Louisiana State University
Address: Dept. Experimental Statistics, Baton Rouge, LA, 70803-5606,
Keywords: smoothing ; zero-inflated ; Poisson ; counts ; spatial
Abstract:

A remotely sensed vegetation index (ndvi) has been paired with ground truth cotton insect counts. Poisson and zero-inflated Poisson (ZIP) regression models have been used to model the relationship. However, the spatial nature of the data had not yet been well incorporated into the analysis and geostatistical methods seemed inapproppriate. Adjustments to these Poisson models and other models involving some smoothing techniques are considered.

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