CSAFE @ ISU - REU 2017

Statistical Approaches to Matching Bullets

Madelaine Quistgaard

Posted on July 28, 2017

1. What data do Hare et al use? The data that they use is the 3D topographical images of the bullets, along with the x3p format which is the array of surface measurements at the micrometer level. They used x3pr and bulletr for processing the data in R. They... [Read More]

Statistical Approaches to Matching Bullets

Macy Neblett

Posted on July 28, 2017

The data used was 3D topographical images of each bullet. Each image is in x3p format, which is an array of surface measurements at the micrometer level. R was used to streamline formatting. The traditional method of examining bullet striations involves placing the bullets under a... [Read More]

Statistical Approaches to Matching Bullets

Firstname Lastname

Posted on July 28, 2017

Background: Watch the entire CSAFE webinar (including questions at the end) posted here. (The actual presentation starts about 7 minutes in.) While you are watching, keep in mind the following questions to respond to when you’re finished: What data do Hare et al use? In what ways... [Read More]

Week 7b: Final H.W.

James Kruse

Posted on July 28, 2017

1) What data do Hare et al use? For this study, Hare et al used the random forest package, the x3p file, and bullet r package. In regards to their reference data base, they used the Hamby study as a starting point and analyzed the data from there. 2) In... [Read More]

Statistical Approaches to Matching Bullets

Andrew Kimble, III

Posted on July 28, 2017

What data do Hare et al use? The data format that Hare et al used was 3D topographical images, they also used 3 R packages which were randomForest, x3pr, and bulletr. In what ways do the methods used by Hare et al differ from the “traditional” methods... [Read More]

CSAFE @ ISU REU

Summer 2017

195 Durham Center

Iowa State University

Leaders: Joe Papio, joepapio at iastate dot edu and Sam Tyner, sctyner at iastate dot edu

Description:

Statistical Approaches to Matching Bullets

Madelaine Quistgaard

Statistical Approaches to Matching Bullets

Macy Neblett

Statistical Approaches to Matching Bullets

Firstname Lastname

Week 7b: Final H.W.

James Kruse

Statistical Approaches to Matching Bullets

Andrew Kimble, III

More info...