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Social sensor analytics: Making sense of network models in social media
Chase P. Dowling;Joshua J. Harrison;Arun V. Sathanur;Landon H. Sego;Courtney D. Corley
2015 IEEE International Conference on Intelligence and Security Informatics (ISI)
Year: 2015 | Conference Paper |
Cited by: Papers (1)
We carefully revisit our definition of a social media signal from previous work both in terms of time-varying features within the data and the networked nature of the medium. Further, we detail our analysis of global patterns in Twitter over the month of June 2014, detect and categorize events, and illustrate how these analyses can be used to inform graph-based models of Twitter, namely using a re...Show More
Assessing performance and tradeoffs of bioforensic signature systems
Daniel M. Watkins;Landon H. Sego;Aimee E. Holmes;Bobbie-Jo M. Webb-Robertson;Amanda M. Whiten;David S. Wunschen;Helen W. Kreuzer;Courtney D. Corley;Mark F. Tardiff
2013 IEEE International Conference on Technologies for Homeland Security (HST)
Year: 2013 | Conference Paper |
Cited by: Papers (2)
Chemical and biological forensic programs rely on laboratory measurements to determine how a threat agent may have been produced. In addition to laboratory analyses, it may also be useful to identify institutions where the same threat agent has been produced by the same (or a similar) process, since the producer of the agent may have learned methods at a university or similar institution. In this ...Show More
A decision-theoretic approach to evaluate radiation detection algorithms
Mallory A. Nobles;Landon H. Sego;Scott K. Cooley;Luke J. Gosink;Richard M. Anderson;Spencer E. Hays;Mark F. Tardiff
2013 IEEE International Conference on Technologies for Homeland Security (HST)
Year: 2013 | Conference Paper |
There are a variety of sensor systems deployed at border crossings and ports of entry throughout the world that scan for illicit nuclear material. These systems employ detection algorithms that interpret the output of the scans and determine whether additional investigation is warranted. In this work, we demonstrate an approach for comparing the performance of such detection algorithms. We optimiz...Show More
Assessing the quality of bioforensic signatures
Landon H. Sego;Aimee E. Holmes;Luke J. Gosink;Bobbie-Jo M. Webb-Robertson;Helen W. Kreuzer;Richard M. Anderson;Alan J. Brothers;Courtney D. Corley;Mark R. Tardiff
2013 IEEE International Conference on Intelligence and Security Informatics
Year: 2013 | Conference Paper |
Cited by: Papers (3)
We present a mathematical framework for assessing the quality of signature systems in terms of fidelity, risk, cost, other attributes, and utility-a method we call Signature Quality Metrics (SQM). We demonstrate the SQM approach by assessing the quality of a signature system designed to predict the culture medium used to grow a microorganism. The system consists of four chemical assays and a Bayes...Show More
The lifecycle of Bayesian network models developed for Multi-Source Signature assessment of Nuclear Programs
Zoe N. Gastelum;Amanda M. White;Paul D. Whitney;Luke J. Gosink;Landon H. Sego
2013 IEEE International Conference on Intelligence and Security Informatics
Year: 2013 | Conference Paper |
The Multi-Source Signatures for Nuclear Programs project, part of Pacific Northwest National Laboratory's (PNNL's) Signature Discovery Initiative, seeks to computationally capture expert assessment of multi-type information to assess nuclear activities through a series of Bayesian network (BN) models. Information types may include text, sensor output, imagery, or audio/video files. The BN models i...Show More
Research towards a systematic signature discovery process
Nathan A. Baker;Jonathan L. Barr;George T. Bonheyo;Cliff A. Joslyn;Kannan Krishnaswami;Mark E. Oxley;Rich Quadrel;Landon H. Sego;Mark F. Tardiff;Adam S. Wynne
2013 IEEE International Conference on Intelligence and Security Informatics
Year: 2013 | Conference Paper |
Cited by: Papers (5)
In its most general form, a signature is a unique or distinguishing measurement, pattern, or collection of data that identifies a phenomenon (object, action, or behavior) of interest. The discovery of signatures is an important aspect of a wide range of disciplines from basic science to national security for the rapid and efficient detection and/or prediction of phenomena. Current practice in sign...Show More
Situational Awareness as a Measure of Performance in Cyber Security Collaborative Work
Ashish Malviya;Glenn A. Fink;Landon Sego;Barbara Endicott-Popovsky
2011 Eighth International Conference on Information Technology: New Generations
Year: 2011 | Conference Paper |
Cited by: Papers (11)
Cyber defense competitions arising from U.S. service academy exercises offer a platform for collecting data that can inform research that ranges from characterizing the ideal cyber warrior to describing behaviors during certain challenging cyber defense situations. This knowledge in turn could lead to better preparation of cyber defenders in both military and civilian settings. We conducted proof-...Show More
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