Sampling (statistics) | Econometric modeling | Regression analysis
The Heckman correction is a statistical technique to correct bias from non-randomly selected samples or otherwise incidentally truncated dependent variables, a pervasive issue in quantitative social sciences when using observational data. Conceptually, this is achieved by explicitly modelling the individual sampling probability of each observation (the so-called selection equation) together with the conditional expectation of the dependent variable (the so-called outcome equation). The resulting likelihood function is mathematically similar to the tobit model for censored dependent variables, a connection first drawn by James Heckman in 1974. Heckman also developed a two-step control function approach to estimate this model, which avoids the computational burden of having to estimate both equations jointly, albeit at the cost of inefficiency. Heckman received the Nobel Memorial Prize in Economic Sciences in 2000 for his work in this field. (Wikipedia).
Famous Comedians VS. Hecklers (Part 6/6)
Sooner or later every comic has to deal with some opinionated audience member. Generally these hecklers are awful because they mess up timing and pacing for the comic, and tend to throw the entire show off balance, therefore ruining the show for all other paying customers. SOMETIMES though
From playlist Geometry: Dynamic Interactives!
How to DEAL with HECKLERS!? 5 FOOLPROOF TRICKS!
Learn My Voodoo Card Trick here: https://sellfy.com/p/OiqQ Alright! You guys asked for it! Here are my sure fire ways of dealing with unwanted hecklers during performance! We all go through this at one point or another but unless you're prepared, you might lose your audience to hecklers!
From playlist Tutorials
PUSHING A GAUSSIAN TO THE LIMIT
Integrating a gaussian is everyones favorite party trick. But it can be used to describe something else. Link to gaussian integral: https://www.youtube.com/watch?v=mcar5MDMd_A Link to my Skype Tutoring site: dotsontutoring.simplybook.me or email dotsontutoring@gmail.com if you have ques
From playlist Math/Derivation Videos
Spinor Normalization | Solving the Dirac Equation
In this video, we will show you how to normalize a spinor. This is actually a very delicate question, and unfortunately there are infinitely many allowed ways to normalize a spinor. But some normalizations are more useful than others. Contents: 00:00 Setup 00:45 Constraint 02:00 Two Conv
From playlist Quantum Mechanics, Quantum Field Theory
Stirring the Mandelbrot Set: a checkerboard
http://code.google.com/p/mandelstir/
From playlist mandelstir
Could it be that either quantum mechanics or general relativity is wrong?
Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us on Facebook: https://www.facebook.com/worldscienceu Follow us on Twitter: https://twitter.com/worldscienceu
From playlist Science Unplugged: Quantum Mechanics
Erik Koelink: Matrix spherical functions and matrix orthogonal polynomials related to $BC_{2}$
HYBRID EVENT Recorded during the meeting "Modern Analysis Related to Root Systems with Applications" the October 18, 2021 by the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathe
From playlist Analysis and its Applications
The Sachdev-Ye-Kitaev quantum mechanics model, black holes, and random matrices - Douglas Stanford
The Sachdev-Ye-Kitaev quantum mechanics model, black holes, and random matrices Douglas Stanford Member, School of Natural Sciences October 26, 2016
From playlist Mathematics
John R. Parker: Complex hyperbolic lattices
Lattices in SU(2,1) can be viewed in several different ways: via their geometry as holomorphic complex hyperbolic isometries, as monodromy groups of hypergeometric functions, via algebraic geometry as ball quotients and (sometimes) using arithmeticity. In this talk I will describe these di
From playlist Geometry
Some of the best pitchers in MLB showing their amazing movements in their pitches. From Fast ball, curve ball, slider, change up to knuckle ball.
From playlist Demos 11. Fluids
Why New Year's Resolutions Fail
Happy New Year! Thanks so much for your support in 2015 ^_^ My Twitter https://twitter.com/nessyhill | Instagram https://instagram.com/nessyhill Subscribe to BrainCraft! http://ow.ly/rt5IE BrainCraft is created and hosted by Vanessa Hill and brought to you by PBS Digital Studios. Talk
From playlist BrainCraft (in chronological order)
Education and Equality | Danielle S. Allen
Danielle S. Allen, UPS Foundation, Professor, School of Social Science, Institute for Advanced Study http://www.ias.edu/people/faculty-and-emeriti/allen Current educational policy discussions frequently invoke "equality" as the reigning ideal. But how clear a view do we have of what we m
From playlist Social Science
Why Do We Find Things Disgusting? | BrainCraft Q&A!
It's my 50th episode! I'm celebrating by answering your questions about disgust, boredom, salty tears and BrainCraft. My Twitter: https://twitter.com/nessyhill Instagram: https://instagram.com/nessyhill/ SUBSCRIBE to BrainCraft! Click here: http://ow.ly/rt5IE ↓ MORE LINKS BELOW ↓ BrainC
From playlist BrainCraft (in chronological order)
Alan Guttmacher - Thriving in a Changing Environment
Alan Guttmacher discusses child care, an overlooked opportunity to improve health and well-being, at the 2016 Childx Symposium. Childx is a dynamic, TED-style conference designed to inspire innovation that improves pediatric and maternal health. Visit our website at http://childx.stanford.
From playlist Stanford Childx Conference 2016
Lecture 8: Private and Social Returns to Education
MIT 14.771 Development Economics, Fall 2021 Instructor: Esther Duflo View the complete course: https://ocw.mit.edu/courses/14-771-development-economics-fall-2021 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP61kvh3caDts2R6LmkYbmzaG Covers empirical evidence on the
From playlist MIT 14.771 Development Economics, Fall 2021
Mod-04 Lec-29 Feminist Criticism
English Language and Literature by Dr. Liza Das & Dr. Krishna Barua,Department of Humanities and Social Sciences,IIT Guwahati.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Guwahati: English Language and Literature | CosmoLearning.org English Language
Monodromy of nFn−1 hypergeometric functions and arithmetic groups I - T.N. Venkatara
Speaker: T. N. Venkataramana (TIFR) Title: Monodromy of nFn−1 hypergeometric functions and arithmetic groups I Abstract: We describe results of Levelt and Beukers-Heckman on the explicit computation of monodromy for generalised hypergeometric functions of one variable. We then discuss the
From playlist Mathematics
Monodromy of nFn−1 hypergeometric functions and arithmetic groups II - Venkataramana
Speaker: T. N. Venkataramana (TIFR) Title: Monodromy of nFn−1 hypergeometric functions and arithmetic groups II We describe results of Levelt and Beukers-Heckman on the explicit computation of monodromy for generalised hypergeometric functions of one variable. We then discuss the question
From playlist Mathematics
Dali Shen: Interpreting Lauricella hypergeometric system as a Dunkl system
The lecture was held within the framework of the Hausdorff Trimester Program: Periods in Number Theory, Algebraic Geometry and Physics. Abstract: In the 80's of last century, Deligne and Mostow studied the monodromy problem of Lauricella hypergeometric functions and gave a rigorous treatm
From playlist HIM Lectures: Trimester Program "Periods in Number Theory, Algebraic Geometry and Physics"
Get 10% off a custom domain and email address by going to https://www.hover.com/BrainCraft SUBSCRIBE to BrainCraft! 👉 http://ow.ly/rt5IE PRE-ORDER BRAINCRAFT MERCH! https://store.dftba.com/collections/braincraft My Twitter https://twitter.com/nessyhill | Instagram https://instagram.com/
From playlist Intelligence