What is a false positive in fraud detection?
Answer: A false positive occurs when a legitimate transaction is incorrectly flagged as potentially fraudulent.
Example: You purchase a new laptop online, but your bank blocks the transaction because it considers the purchase unusual.
Is that a false negative
That's actually a false negative if it doesn't trigger the cop but should; a false positive is when it does trigger the cop/test/fire alarm/etc. but should not.
Massive trial shows COVID rapid tests excel at detecting silent cases. (2022). Nature. https://doi.org/10.1038/d41586-022-00589-3
Isabella Eckerle on Twitter. (n.d.). Twitter. Retrieved 26 February 2021, from https://twitter.com/EckerleIsabella/status/1329060111571103744
Imperial College London. ‘Report 34 - COVID-19 Infection Fatality Ratio Estimates from Seroprevalence’. Accessed 12 March 2021. http://www.imperial.ac.uk/medicine/departments/school-public-health/infectious-disease-epidemiology/mrc-global-infectious-disease-analysis/covid-19/report-34-ifr/.
David Spiegelhalter and False Positives. (2020, October 14). https://www.youtube.com/watch?v=XmiEzi54lBI&feature=youtu.be
balloons
I remember the false positive Leo Laporte reported in his home security system when it thought a balloon floating by was an intruder in his home.
Surkova, E., Nikolayevsskyy, V., Drobniewski, F. (2020). False-positive COVID-19 results: hidden problems and costs. The Lancet Respiratory Medicine. https://doi.org/10.1016/S2213-2600(20)30453-7
Is this the second wave? (2020, September 22). UnHerd. https://unherd.com/2020/09/do-we-need-a-second-lockdown/
Graham Cooke on Twitter. (n.d.). Twitter. Retrieved September 23, 2020, from https://twitter.com/grahamscooke/status/1308132497822281728
Kouzy, R., Jaoude, J. A., Garcia, C. J. G., Alam, M. B. E., Taniguchi, C. M., & Ludmir, E. B. (2020). Characteristics of the Multiplicity of Randomized Clinical Trials for Coronavirus Disease 2019 Launched During the Pandemic. JAMA Network Open, 3(7), e2015100–e2015100. https://doi.org/10.1001/jamanetworkopen.2020.15100
Peter English #FBPE on Twitter. (n.d.). Twitter. Retrieved August 24, 2020, from https://twitter.com/petermbenglish/status/1296730819420196864
Dr. Angela Rasmussen on Twitter: “@jan7681 If I was asked to comment on the intricacies of the luxury electric car market or how to secure NASA contracts, I’d defer to him.” / Twitter. (n.d.). Twitter. Retrieved July 7, 2020, from https://twitter.com/angie_rasmussen/status/1278346632254259200
Maier, M., Bartoš, F., & Wagenmakers, E.-J. (2020). Robust Bayesian Meta-Analysis: Addressing Publication Bias with Model-Averaging [Preprint]. PsyArXiv. https://doi.org/10.31234/osf.io/u4cns
Lee, S. M. (2020, April 22) Two Antibody Studies Say Coronavirus Infections Are More Common Than We Think. Scientists Are Mad. https://www.buzzfeednews.com/article/stephaniemlee/coronavirus-antibody-test-santa-clara-los-angeles-stanford