The accuracy paradox is the paradoxical finding that accuracy is not a good metric for predictive models when classifying in predictive analytics. This is because a simple model may have a high level of accuracy but be too crude to be useful. For example, if the incidence of category A is dominant, being found in 99% of cases, then predicting that every case is category A will have an accuracy of 99%. Precision and recall are better measures in such cases.The underlying issue is that there is a class imbalance between the positive class and the negative class. Prior probabilities for these classes need to be accounted for in error analysis. Precision and recall help, but precision too can be biased by very unbalanced class priors in the test sets. (Wikipedia).
This chemistry video tutorial explains the difference of accuracy and precision in measurement. This video gives an example of four students attempting to measure the density of aluminum and asks which data is accurate but not precise. Accuracy has to do with how close your data is to th
From playlist New AP & General Chemistry Video Playlist
What Are Error Intervals? GCSE Maths Revision
What are error Intervals and how do we find them - that's the mission in this episode of GCSE Maths minis! Error Intervals appear on both foundation and higher tier GCSE maths and IGCSE maths exam papers, so this is excellent revision for everyone! DOWNLOAD THE QUESTIONS HERE: https://d
From playlist Error Intervals & Bounds GCSE Maths Revision
Statistics 5_1 Confidence Intervals
In this lecture explain the meaning of a confidence interval and look at the equation to calculate it.
From playlist Medical Statistics
Review: Accuracy of Measurement (Defining and applying accuracy of measurement)
More resources available at www.misterwootube.com
From playlist Applications of Measurement
Teach Astronomy - Accuracy and Precision
http://www.teachastronomy.com/ Scientists try to make measurements of high accuracy. Accuracy means that the value that's measured through an observation is very close to the true value. It also means that if multiple measurements are made, we can increase the accuracy of a measurement.
From playlist 01. Fundamentals of Science and Astronomy
F-measure is a harmonic mean of recall and precision. Think of it as accuracy, but without the effect of true negatives (which made accuracy meaningless for evaluating search algorithms). F-measure can also be interpreted as the Dice coefficient between the relevant set and the retrieved s
From playlist IR13 Evaluating Search Engines
The medical test paradox, and redesigning Bayes' rule
About Likelihood Ratios, also sometimes called Bayes Factors*. Help fund future projects: https://www.patreon.com/3blue1brown An equally valuable form of support is to simply share some of the videos. Special thanks to these supporters: https://3b1b.co/bayes-factor-thanks Home page: https:
From playlist Prob and Stats
Sum of Absolute Values: solve an inequality
#mathonshorts #shorts The geometric interpretation of the absolute value is important in solving this problem. On a real number line, |x-a| is the distance between a real number x and a constant a.
From playlist "Smarter In-A-Minute" Math on Shorts
Fourteenth Imaging & Inverse Problems (IMAGINE) OneWorld SIAM-IS Virtual Seminar Series Talk
Date: Wednesday, February 17, 2021, 10:00am EDT Speaker: Anders Hansen, University of Cambridge Title: On the foundations of computational mathematics, Smale’s 18th problem and the potential limits of AI Abstract: There is a profound optimism on the impact of deep learning (DL) and AI w
From playlist Imaging & Inverse Problems (IMAGINE) OneWorld SIAM-IS Virtual Seminar Series
Two-Way Tables (2 of 2: Michael Jordan vs. Reggie Miller)
More resources available at www.misterwootube.com
From playlist Descriptive Statistics & Bivariate Data Analysis
Location Intelligence Products: Goals and Challenges | AISC
For slides and more information on the paper, visit https://aisc.ai.science/events/2019-10-15-ai-product Discussion lead: Arthur Berrill
From playlist AI Products
Introduction to Accuracy and Precision (includes Relative Error)
This video includes the definitions of Accuracy and Precision. It also shows several examples using a "Safe Dart" bow and arrow. It ends with the equation for Relative Error. 0:00 Intro 0:44 Definition of Accuracy 1:39 Definition of Precision 2:17 The Question for all the Examples 3:48
From playlist IB Physics 1: Measurements and Uncertainties
The Information Paradox and State-Dependence by Suvrat Raju
21 November 2016 to 10 December 2016 VENUE Ramanujan Lecture Hall, ICTS Bangalore Quantum Theory has passed all experimental tests, with impressive accuracy. It applies to light and matter from the smallest scales so far explored, up to the mesoscopic scale. It is also a necessary ingredie
From playlist Fundamental Problems of Quantum Physics
The Role of Theory in Science - David Gross
Speaker : David Gross (KITP, Santa Barbara) Date and Time : 28 Dec 2009, 05:30 PM Venue : J. N. Tata Auditorium, IISc, Bangalore On the occasion of the inauguration of the International Centre for Theoretical Sciences, TIFR, I shall share some of my observations and conclusions as to the
From playlist Public Lectures
Revisiting the black hole information paradox by Pushkal Shrivastava
ICTS IN-HOUSE 2020 Organizers: Amit Kumar Chatterjee, Divya Jaganathan, Junaid Majeed, Pritha Dolai Date:: 17-18th February 2020 Venue: Ramanujan Lecture Hall, ICTS Bangalore inhouse@icts.res.in An exclusive two-day event to exchange ideas and discuss research amongst member
From playlist ICTS In-house 2020
Ruby Conference 2007 Essential Incompleteness in Program Modeling by Luke Kanies
Help us caption & translate this video! http://amara.org/v/FGcs/
From playlist Ruby Conference 2007
Should you trust unanimous decisions? - Derek Abbott
View full lesson: http://ed.ted.com/lessons/should-you-trust-unanimous-decisions-derek-abbott Imagine a police lineup where ten witnesses are asked to identify a bank robber they glimpsed fleeing the scene. If six of them pick the same person, there’s a good chance that’s the culprit. And
From playlist New TED-Ed Originals
Vigyan Adda Talk: Black Holes and the Reversibility of Time by Suvrat Raju
OUTREACH ACTIVITY VIGYAN ADDA TALK: BLACK HOLES AND THE REVERSIBILITY OF TIME SPEAKER Suvrat Raju (ICTS-TIFR, Bengaluru) WHEN 4:30 pm to 6:00 pm Tuesday, 22 December 2020 WHERE Livestream via the ICTS YouTube channel Abstract: A central tenet of physics is that time evolution is reversibl
From playlist Vigyan Adda
IntervalsForRegression.4.PredictionIntervals
This video is brought to you by the Quantitative Analysis Institute at Wellesley College. The material is best viewed as part of the online resources that organize the content and include questions for checking understanding: https://www.wellesley.edu/qai/onlineresources
From playlist Intervals for Regression