Tag Archives: Search Theory

OSARA Talks Online

Posted on March 15, 2013 by ctwardy

OSARA conference link, with highlights from Ken Chiacchia's talk. Continue reading →

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"Small Scatters of Generally Unobtrusive Artifacts"

Posted on December 8, 2012 by ctwardy

When searching for an image for this post, I came across several works by E.B. Banning applying search theory to archaeology: Sweep widths and the detection of artifacts in archaeological survey. (2011) [Science Direct] Detection functions for archaeological survey (2006). … Continue reading →

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A Brief Intro to Search Theory (2 of 4)

Posted on August 2, 2012 by ctwardy

In the previous post, we began to build a theory of detection over time as the result of a very large number of independent glimpses.  By assuming the environment to be fixed for awhile, we moved all the environmental factors … Continue reading →

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Brief Intro to SAR Theory (1 of 4)

Posted on July 24, 2012 by ctwardy

We begin a four-part gentle introduction to search theory. Our topic is visual detection of targets by land searchers. Today we summarize Koopman Chapter 3, constructing the useful "inverse cube" detection model by starting from instantaneous glimpses with tiny detection … Continue reading →

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MapScore: A Portal for Scoring Probability Maps

Posted on May 4, 2012 by ctwardy

The SARBayes MapScore server has been running for a month now at http://mapscore.sarbayes.org.  It's a portal for scoring probability maps, so researchers like us can measure how well we are doing, and see which approaches work best for which situations.  … Continue reading →

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MapSAR

Posted on May 3, 2012 by ctwardy

Don Ferguson just sent me an update on the MapSAR project -- he's presenting at a project meeting this week in the Grand Canyon.  I'm blown away by his slides.  They've got it: a GIS enabled search planning tool with … Continue reading →

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Bayesian Motion Models of LPB

Posted on January 1, 2010 by ctwardy

Lin & Goodrich at Brigham Young are working on Bayesian motion models for generating probability maps. They have an interesting model, but need GPS tracks to train it. It's a nice complement to our approach, and it will be interesting … Continue reading →

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Link between AMDR & ESW

Posted on July 6, 2008 by ctwardy

The Correlation Why Care? Why not just believe the data? What is the AMDR? Teaser Appendix

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Syrotuck's Data

Posted on July 5, 2008 by ctwardy

Syrotuck's main study is his 1976, with N=242. But he gives much more detail about distance travelled in his 1975 paper, breaking distance down every 0.2 miles. Unfortunately, he only reports probabilities, not numbers, and doesn't even report total N. … Continue reading →

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Comments on O'Connor 2004

Posted on September 12, 2007 by ctwardy

Comments on the 2004 draft of "Controversial Topics in Inland SAR Planning" by Dan O'Connor. Written in 2004, updated in 2007. Continue reading →

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