Bayesian networks | Econometric modeling | Latent variable models
In statistics, latent variables (from Latin: present participle of lateo, “lie hidden”) are variables that can only be inferred indirectly through a mathematical model from other observable variables that can be directly observed or measured. Such latent variable models are used in many disciplines, including political science, demography, engineering, medicine, ecology, physics, machine learning/artificial intelligence, bioinformatics, chemometrics, natural language processing, management and the social sciences. Latent variables may correspond to aspects of physical reality. These could in principle be measured, but may not be for practical reasons. In this situation, the term hidden variables is commonly used (reflecting the fact that the variables are meaningful, but not observable). Other latent variables correspond to abstract concepts, like categories, behavioral or mental states, or data structures. The terms hypothetical variables or hypothetical constructs may be used in these situations. The use of latent variables can serve to reduce the dimensionality of data. Many observable variables can be aggregated in a model to represent an underlying concept, making it easier to understand the data. In this sense, they serve a function similar to that of scientific theories. At the same time, latent variables link observable "sub-symbolic" data in the real world to symbolic data in the modeled world. (Wikipedia).
(PP 3.1) Random Variables - Definition and CDF
(0:00) Intuitive examples. (1:25) Definition of a random variable. (6:10) CDF of a random variable. (8:28) Distribution of a random variable. A playlist of the Probability Primer series is available here: http://www.youtube.com/view_play_list?p=17567A1A3F5DB5E4
From playlist Probability Theory
VARIABLES in Statistical Research (2-1)
A variable is any characteristic that can vary. An organized collection of numbers can be a variable. Qualitative variables indicate an attribute or belongingness to a category. Dichotomous variables are discrete variables that can have two and only two values. Quantitative variables indic
From playlist Forming Variables for Statistics & Statistical Software (WK 2 - QBA 237)
What are Continuous Random Variables? (1 of 3: Relation to discrete data)
More resources available at www.misterwootube.com
From playlist Random Variables
(PP 6.2) Multivariate Gaussian - examples and independence
Degenerate multivariate Gaussians. Some sketches of examples and non-examples of Gaussians. The components of a Gaussian are independent if and only if they are uncorrelated.
From playlist Probability Theory
Latent Growth Curve Modeling | Part 2 | Structural Equation Modeling
In the second installment of this video series, I will discuss the essential concepts in Growth Curve Modeling within the Structural Equation Modeling framework.
From playlist Growth Curve Models
Prob & Stats - Random Variable & Prob Distribution (1 of 53) Random Variable
Visit http://ilectureonline.com for more math and science lectures! In this video I will define and gives an example of what is a random variable. Next video in series: http://youtu.be/aEB07VIIfKs
From playlist iLecturesOnline: Probability & Stats 2: Random Variable & Probability Distribution
Discovering Variables – Combining Numbers for More Powerful Statistics (1-4)
Combining numbers creates variables – values that can vary or take on more than one value. If a value can be measured among a group and that value will be different for at least some of the group members, then you are measuring a variable. You will learn about qualitative (categorical) and
From playlist WK1 Numbers and Variables - Online Statistics for the Flipped Classroom
Definition of an Injective Function and Sample Proof
We define what it means for a function to be injective and do a simple proof where we show a specific function is injective. Injective functions are also called one-to-one functions. Useful Math Supplies https://amzn.to/3Y5TGcv My Recording Gear https://amzn.to/3BFvcxp (these are my affil
From playlist Injective, Surjective, and Bijective Functions
Prob & Stats - Random Variable & Prob Distribution (4 of 53) Types of Random Variable
Visit http://ilectureonline.com for more math and science lectures! In this video I will define 2 types of random variables (discrete and continuous variables). Next video in series: http://youtu.be/mtt3h54aSkk
From playlist iLecturesOnline: Probability & Stats 2: Random Variable & Probability Distribution
DeepMind x UCL | Deep Learning Lectures | 11/12 | Modern Latent Variable Models
This lecture, by DeepMind Research Scientist Andriy Mnih, explores latent variable models, a powerful and flexible framework for generative modelling. After introducing this framework along with the concept of inference, which is central to it, Andriy focuses on two types of modern latent
From playlist Learning resources
Multilevel Latent Class Regression of Stages of Change for Multiple Health Behaviors
Multilevel Laten Class Regression of Stages of Change for Multiple Health Behaviors, recorded November 26th, 2012. For more information and access to courses, lectures, and teaching material, please visit the official UC Irvine OpenCourseWare website at: http://ocw.uci.edu
From playlist Public Health: Collections
Confirmatory factor analysis in AMOS | Part 1
In this video, I demonstrate how to use AMOS for confirmatory factor analysis (CFA). For a discussion on normality analysis, please see the following videos: #1: https://www.youtube.com/watch?v=1gSyZ_DPQRQ #2: https://www.youtube.com/watch?v=uCjOoEKQJvo AMOS (trial version) can be downlo
From playlist Structural Equation Modeling
From playlist Plenary talks One World Symposium 2020
CMU Neural Nets for NLP 2017 (15): Latent Variable Models
This lecture (by Graham Neubig) for CMU CS 11-747, Neural Networks for NLP (Fall 2017) covers: * Generative vs. Discriminative, Deterministic vs. Random Variables * Variational Autoencoders * Handling Discrete Latent Variables * Examples of Variational Autoencoders in NLP Slides: http://
From playlist CMU Neural Nets for NLP 2017
Ruslan Salakhutdinov: "Learning Hierarchical Generative Models, Pt. 1"
Graduate Summer School 2012: Deep Learning, Feature Learning "Learning Hierarchical Generative Models, Pt. 1" Ruslan Salakhutdinov, University of Toronto Institute for Pure and Applied Mathematics, UCLA July 23, 2012 For more information: https://www.ipam.ucla.edu/programs/summer-school
From playlist GSS2012: Deep Learning, Feature Learning
Dreamer v2: Mastering Atari with Discrete World Models (Machine Learning Research Paper Explained)
#dreamer #deeprl #reinforcementlearning Model-Based Reinforcement Learning has been lagging behind Model-Free RL on Atari, especially among single-GPU algorithms. This collaboration between Google AI, DeepMind, and the University of Toronto (UofT) pushes world models to the next level. Th
From playlist Papers Explained
Topographic VAEs learn Equivariant Capsules (Machine Learning Research Paper Explained)
#tvae #topographic #equivariant Variational Autoencoders model the latent space as a set of independent Gaussian random variables, which the decoder maps to a data distribution. However, this independence is not always desired, for example when dealing with video sequences, we know that s
From playlist Papers Explained
The Blessings of Multiple Causes - David M. Blei
Seminar on Theoretical Machine Learning Topic: The Blessings of Multiple Causes Speaker: David M. Blei Affiliation: Columbia University Date: January 21, 2020 For more video please visit http://video.ias.edu
From playlist Mathematics
Adji Bousso Dieng: "Structured Deep Generative Models"
Machine Learning for Physics and the Physics of Learning 2019 Workshop II: Interpretable Learning in Physical Sciences "Structured Deep Generative Models" Adji Bousso Dieng, Columbia University Institute for Pure and Applied Mathematics, UCLA October 16, 2019 For more information: http:
From playlist Machine Learning for Physics and the Physics of Learning 2019
Intro to a Variable as a Changing Value or Placeholder
This video defines a variable and provides examples of a variable used as a changing value or a placeholder http://mathispower4u.com
From playlist Algebraic Structures Module