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X-WR-CALDESC:Events for Center for Statistics and Applications in Forensic Evidence
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DTSTART;TZID=America/Chicago:20221014T100000
DTEND;TZID=America/Chicago:20221014T120000
DTSTAMP:20220925T010147
CREATED:20220722T203702Z
LAST-MODIFIED:20220906T174249Z
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SUMMARY:Statistical Thinking for Forensic Practitioners Short Course - Session 1
DESCRIPTION:This event is scheduled to take place on Friday\, October 14\, 2022. A registration form can be found below. \nSession 1 Description: \nProbability Concepts and their Relevance to Forensic Science is the first session in the three-session short course\, Statistical Thinking for Forensic Practitioners. \nProbability is the mathematical language of uncertainty. Probabilities are used to describe the frequency or likelihood of events or to characterize measurement uncertainty. In this first session\, we introduce the laws of probability and their application in forensic settings. Specific topics include: \n\nDefinition and interpretation of probability\nBasic laws of probability\nConditional probability and independence of events\nBayes’ Theorem and Bayesian statistics\n\nTopics are illustrated with examples drawn from forensic science and relevant legal cases. \nPresenter: \nHal Stern\nCo-Director of CSAFE\nProvost\, Executive Vice Chancellor\, and Chancellor’s Professor – University of California\, Irvine \nAbout the Short Course: \nSession 1 is the first session in the four-part short course\, Statistical Thinking for Forensic Practitioners. Dr. Hal Stern introduces fundamental concepts from probability and statistics –– motivated by forensic issues –– followed by a detailed investigation of how they apply to assess forensic evidence’s probative value. This short course will be held online in four sessions. Each session builds upon the previous one(s) and recordings will be available in the event registrants are unable to attend one or more of the live sessions. Researchers\, collaborators\, and members of the broader forensics and statistics communities are encouraged to attend. Short course registrants who attend all sessions will receive a certificate of completion. \nRegistration:
URL:https://forensicstats.org/event/statistical-thinking-for-forensic-practitioners-short-course-session1-fall2022/
LOCATION:Virtual
CATEGORIES:Short Course
ATTACH;FMTTYPE=image/png:https://forensicstats.org/wp-content/uploads/2022/03/CategoryIcons_Statistics-e1648568754268.png
ORGANIZER;CN="Anthony%20Greiter%2C%20CSAFE%20Learning%20%26%20Development%20Specialist":MAILTO:agreiter@iastate.edu
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20221018T110000
DTEND;TZID=America/Chicago:20221018T120000
DTSTAMP:20220925T010147
CREATED:20220825T133412Z
LAST-MODIFIED:20220906T174227Z
UID:14406-1666090800-1666094400@forensicstats.org
SUMMARY:Webinar: handwriter: A Demonstration and Update on CSAFE Handwriting Analysis
DESCRIPTION:CSAFE invites researchers\, collaborators\, and members of the broader forensics and statistics communities to participate in our Summer 2022 Webinar Series on Tuesday\, October 18\, 2022\, from 11:00am-Noon CT. The presentation will be “handwriter: A Demonstration and Update on CSAFE Handwriting Analysis.” \nPresenter: \nAlicia Carriquiry\nDirector\, Center for Statistics and Applications in Forensic Evidence (CSAFE)\nDistinguished Professor and President’s Chair\, Department of Statistics – Iowa State University \nPresentation Description: \nForensic handwriting analysis relies on the principle of individuality: no two writers produce identical writing\, and given enough quality and quantity of writing\, it is possible to infer whether two documents were written by the same person. Forensic handwriting analysis is carried out by examiners trained to find subtle differences and similarities between a questioned document and a reference sample. Examiners visually compare samples and offer an opinion regarding the source of the questioned document. \nIn the last 10-15 years\, researchers have proposed algorithmic tools to complement examiners’ visual assessments. A well-known software system called FLASH ID (Sciometrics\, LLC) first decomposes the image of a questioned sample into structures called graphemes and then characterizes them by their topology and shape. Given a closed set of reference samples\, the software computes a score that quantifies the similarity between the questioned document and the references. FLASH ID has been extensively tested and has been shown to exhibit very good accuracy. \nAt CSAFE\, we are working on semi-automated methods suitable for closed or for open sets of reference writers\, and for the examination of samples at the level of words or at the level of graphical structures similar\, but not identical to graphemes. In the webinar we will describe each of the different methods\, and show initial but promising results. When the reference set of writers is closed we use a Bayesian approach that outputs a probability of writership for each writer in the set. Because the output is an estimated probability\, the interpretation of results is straightforward. We are still developing and testing the word-based approach and the more algorithmic approach that can be used when the set of potential writers is open\, but can show some initial results and our plans for future developments. We will demonstrate our software to implement these methods: handwriter. The program is not yet fully functional\, but an early version is in the public domain and can be freely accessed at https://github.com/CSAFE-ISU/handwriter. \n \nWebinars are free and open to the public\, but researchers\, collaborators and members of the broader forensics and statistics communities are encouraged to attend. Space is only guaranteed for the first 150 people registered. Each 60-minute webinar will allow for discussion and questions. \nSign up on the form below (Chrome & Safari web browsers work the best):
URL:https://forensicstats.org/event/webinar-handwriter-a-demonstration-and-update-on-csafe-handwriting-analysis/
LOCATION:Online Learning
ATTACH;FMTTYPE=image/png:https://forensicstats.org/wp-content/uploads/2020/07/handwriting.png
ORGANIZER;CN="Anthony%20Greiter%2C%20CSAFE%20Learning%20%26%20Development%20Specialist":MAILTO:agreiter@iastate.edu
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20221021T100000
DTEND;TZID=America/Chicago:20221021T120000
DTSTAMP:20220925T010147
CREATED:20220722T204459Z
LAST-MODIFIED:20220906T174258Z
UID:14139-1666346400-1666353600@forensicstats.org
SUMMARY:Statistical Thinking for Forensic Practitioners Short Course - Session 2
DESCRIPTION:This event is scheduled to take place on Friday\, October 21\, 2022. A registration form can be found below. \nSession 2 Description: \nSession 2: Sampling\, Statistics and the Status Quo is the second session in the four-part short course\, Statistical Thinking for Forensic Practitioners. \nStatistical ideas such as sampling\, point and interval estimation of population quantities\, and hypothesis testing have direct application in forensic science. In this session\, we start from fundamental ideas about variability (and its sources) in measurements used in forensic analysis\, and discuss methods to ameliorate\, quantify\, model\, and interpret variation and uncertainty in the evaluation of forensic evidence. In more detail\, we will: \n\nTalk about variability and its sources\, and introduce ideas such as reproducibility\, repeatability\, and accuracy.\nBriefly talk about populations and samples\, and describe some sampling methods useful in forensic applications.\nIntroduce the idea of estimation of population quantities such as means and proportions and of methods to report the uncertainty attached to those estimates.\nDescribe how to carry out a test of hypothesis to compare two means and a test of equivalence to compare two means.\nDemonstrate how statistical concepts can be used in the study of current forensic science practice (e.g.\, design and analysis of black box studies)\n\nPresenter: \nHal Stern\nCo-Director of CSAFE\nProvost\, Executive Vice Chancellor\, and Chancellor’s Professor – University of California\, Irvine \nAbout the Short Course: \nSession two is the second session in the four-part short course\, Statistical Thinking for Forensic Practitioners. Dr. Hal Stern introduces fundamental concepts from probability and statistics –– motivated by forensic issues –– followed by a detailed investigation of how they apply to assess forensic evidence’s probative value. This short course will be held online in four sessions. Each session builds upon the previous one(s) and recordings will be available in the event registrants are unable to attend one or more of the live sessions. Researchers\, collaborators\, and members of the broader forensics and statistics communities are encouraged to attend. Short course registrants who attend all sessions will receive a certificate of completion. \n \nRegistration:
URL:https://forensicstats.org/event/statistical-thinking-for-forensic-practitioners-short-course-session2-fall2022/
CATEGORIES:Short Course
ATTACH;FMTTYPE=image/png:https://forensicstats.org/wp-content/uploads/2022/03/CategoryIcons_Statistics-e1648568754268.png
ORGANIZER;CN="Anthony%20Greiter%2C%20CSAFE%20Learning%20%26%20Development%20Specialist":MAILTO:agreiter@iastate.edu
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BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20221028T100000
DTEND;TZID=America/Chicago:20221028T120000
DTSTAMP:20220925T010147
CREATED:20220722T204814Z
LAST-MODIFIED:20220906T174305Z
UID:14142-1666951200-1666958400@forensicstats.org
SUMMARY:Statistical Thinking for Forensic Practitioners Short Course - Session 3
DESCRIPTION:This event is scheduled to take place on Friday\, October 28\, 2022. A registration form can be found below. \nSession 3 Description: \nSession 3: Quantitative Tools for Forensic Evidence is the third session in the four-part short course\, Statistical Thinking for Forensic Practitioners. \nThe National Academies report in 2009 and the PCAST report in 2016 encouraged consideration of quantitative approaches to assessing forensic evidence. In this session\, we review two of the most often-suggested quantitative approaches\, the two-stage approach and the likelihood ratio (Bayes factor) approach. Specific topics include: \n\nThe two-stage approach to assessing forensic evidence\n\nThe role of statistical tests in assessing the similarity of two samples\nApproaches for assessing the relevance of observed similarities\n\n\nIntroduction to the likelihood ratio approach\n\nDefinition and interpretation of the likelihood ratio/Bayes factor\nPossible applications to different types of evidence (DNA\, trace\, pattern)\nScore-based likelihood ratios\nSensitivity of the likelihood ratio to modeling choices\n\n\nResults of studies comparing different ways of expressing source conclusions\n\nPresenter:\nHal Stern\nCo-Director of CSAFE\nProvost\, Executive Vice Chancellor\, and Chancellor’s Professor – University of California\, Irvine \nAbout the Short Course:\nSession three is the third session in the four-part short course\, Statistical Thinking for Forensic Practitioners. Dr. Hal Stern introduces fundamental concepts from probability and statistics –– motivated by forensic issues –– followed by a detailed investigation of how they apply to assess forensic evidence’s probative value. This short course will be held online in four sessions. Each session builds upon the previous one(s) and recordings will be available in the event registrants are unable to attend one or more of the live sessions. Researchers\, collaborators\, and members of the broader forensics and statistics communities are encouraged to attend. Short course registrants who attend all sessions will receive a certificate of completion. \nRegistration:
URL:https://forensicstats.org/event/statistical-thinking-for-forensic-practitioners-short-course-session3-fall2022/
CATEGORIES:Short Course
ATTACH;FMTTYPE=image/png:https://forensicstats.org/wp-content/uploads/2022/03/CategoryIcons_Statistics-e1648568754268.png
ORGANIZER;CN="Anthony%20Greiter%2C%20CSAFE%20Learning%20%26%20Development%20Specialist":MAILTO:agreiter@iastate.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221104T100000
DTEND;TZID=America/New_York:20221104T120000
DTSTAMP:20220925T010147
CREATED:20220722T205034Z
LAST-MODIFIED:20220906T174144Z
UID:14144-1667556000-1667563200@forensicstats.org
SUMMARY:Statistical Thinking for Forensic Practitioners Short Course - Session 4
DESCRIPTION:This event is scheduled to take place on Friday\, November 4\, 2022. A registration form can be found below. \nSession 4 Description: \nSession 4: Quantitative Tools for Forensic Evidence Part 2 is the final session in the four-part short course\, Statistical Thinking for Forensic Practitioners. \nThe National Academies report in 2009 and the PCAST report in 2016 encouraged consideration of quantitative approaches to assessing forensic evidence. In this session\, we review two of the most often-suggested quantitative approaches\, the two-stage approach and the likelihood ratio (Bayes factor) approach. Specific topics include: \n\nThe two-stage approach to assessing forensic evidence\n\nThe role of statistical tests in assessing the similarity of two samples\nApproaches for assessing the relevance of observed similarities\n\n\nIntroduction to the likelihood ratio approach\n\nDefinition and interpretation of the likelihood ratio/Bayes factor\nPossible applications to different types of evidence (DNA\, trace\, pattern)\nScore-based likelihood ratios\nSensitivity of the likelihood ratio to modeling choices\n\n\nResults of studies comparing different ways of expressing source conclusions\n\nPresenter:\nHal Stern\nCo-Director of CSAFE\nProvost\, Executive Vice Chancellor\, and Chancellor’s Professor – University of California\, Irvine \nAbout the Short Course:\nSession four is the final session in the four-session short course\, Statistical Thinking for Forensic Practitioners. Dr. Hal Stern introduces fundamental concepts from probability and statistics –– motivated by forensic issues –– followed by a detailed investigation of how they apply to assess forensic evidence’s probative value. This short course will be held online in three sessions. Each session builds upon the previous one(s) and recordings will be available in the event registrants are unable to attend one or more of the live sessions. Researchers\, collaborators\, and members of the broader forensics and statistics communities are encouraged to attend. Short course registrants who attend all sessions will receive a certificate of completion. \nRegistration:
URL:https://forensicstats.org/event/statistical-thinking-for-forensic-practitioners-short-course-session4-fall2022/
CATEGORIES:Short Course
ATTACH;FMTTYPE=image/png:https://forensicstats.org/wp-content/uploads/2022/03/CategoryIcons_Statistics-e1648568754268.png
ORGANIZER;CN="Anthony%20Greiter%2C%20CSAFE%20Learning%20%26%20Development%20Specialist":MAILTO:agreiter@iastate.edu
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