Mean directional accuracy (MDA), also known as mean direction accuracy, is a measure of prediction accuracy of a forecasting method in statistics. It compares the forecast direction (upward or downward) to the actual realized direction. It is defined by the following formula: where At is the actual value at time t and Ft is the forecast value at time t. Variable N represents number of forecasting points. The function is sign function and is the indicator function. In simple words, MDA provides the probability that the under study forecasting method can detect the correct direction of the time series. MDA is a popular metric for forecasting performance in economics and finance. MDA is used in economics applications where the economist is often interested only in directional movement of variable of interest. As an example in macroeconomics, a monetary authority who wants to know the direction of the inflation, to raise or decrease interest rates if inflation is predicted to rise or drop respectively. Another example can be found in financial planning where the user wants to know if the demand has increasing direction or decreasing trend. (Wikipedia).
How do you understand the direction of an angle
Learn how to determine the magnitude and direction of a vector. The magnitude of a vector is the length of the vector. The magnitude of a vector is obtained by taking the square root of the sum of the squares of the components of the vector. The direction of a vector is obtained by taking
From playlist Vectors
How to determine the angle of a vector as well as use angles to represent vectors
Learn how to determine the magnitude and direction of a vector. The magnitude of a vector is the length of the vector. The magnitude of a vector is obtained by taking the square root of the sum of the squares of the components of the vector. The direction of a vector is obtained by taking
From playlist Vectors
Learn how to identify the magnitude and direction from a vector given in that form
Learn how to determine the magnitude and direction of a vector. The magnitude of a vector is the length of the vector. The magnitude of a vector is obtained by taking the square root of the sum of the squares of the components of the vector. The direction of a vector is obtained by taking
From playlist Vectors
Learn how to identify the magnitude and direction from a vector given in that form
Learn how to determine the magnitude and direction of a vector. The magnitude of a vector is the length of the vector. The magnitude of a vector is obtained by taking the square root of the sum of the squares of the components of the vector. The direction of a vector is obtained by taking
From playlist Vectors
Find the magnitude and direction of resultant vector given bearings
Learn how to determine the magnitude and direction of a vector. The magnitude of a vector is the length of the vector. The magnitude of a vector is obtained by taking the square root of the sum of the squares of the components of the vector. The direction of a vector is obtained by taking
From playlist Vectors
๐ Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles, supplementary angles, linear pairs, etc. Vertical a
From playlist Angle Relationships
CCSS What is the difference between Acute, Obtuse, Right and Straight Angles
๐ Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles, supplementary angles, linear pairs, etc. Vertical a
From playlist Angle Relationships
Gradient (2 of 3: Angle of inclination)
More resources available at www.misterwootube.com
From playlist Further Linear Relationships
Deep Ensembles: A Loss Landscape Perspective (Paper Explained)
#ai #research #optimization Deep Ensembles work surprisingly well for improving the generalization capabilities of deep neural networks. Surprisingly, they outperform Bayesian Networks, which are - in theory - doing the same thing. This paper investigates how Deep Ensembles are especially
From playlist Papers Explained
Guy Rothblum - The Multi-X Framework Pt. 2/4 - IPAM at UCLA
Recorded 13 July 2022. Guy Rothblum of Apple Inc. presents "The Multi-X Framework" at IPAM's Graduate Summer School on Algorithmic Fairness. Abstract: A third general notion of fairness lies between the individual and group notions. We call this โmulti-X,โ where โmultiโ refers to the fact
From playlist 2022 Graduate Summer School on Algorithmic Fairness
Adversarial Examples Are Not Bugs, They Are Features
Abstract: Adversarial examples have attracted significant attention in machine learning, but the reasons for their existence and pervasiveness remain unclear. We demonstrate that adversarial examples can be directly attributed to the presence of non-robust features: features derived from p
From playlist Adversarial Examples
Benign overfitting- Peter Bartlett, UC Berkley
Recent years have witnessed an increased cross-fertilisation between the fields of statistics and computer science. In the era of Big Data, statisticians are increasingly facing the question of guaranteeing prescribed levels of inferential accuracy within certain time budget. On the other
From playlist Statistics and computation
CCSS What is the Angle Addition Postulate
๐ Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles, supplementary angles, linear pairs, etc. Vertical a
From playlist Angle Relationships
Talk Jingwei Hu: Deterministic solution of the Boltzmann equation Fast spectral methods
The lecture was held within the of the Hausdorff Trimester Program: Kinetic Theory Abstract: The Boltzmann equation, an integro-differential equation for the molecular distribution function in the physical and velocity phase space, governs the fluid flow behavior at a wide range of physi
From playlist Summer School: Trails in kinetic theory: foundational aspects and numerical methods
On the Convergence of Deep Learning with Differential Privacy
A Google TechTalk, presented by Zhiqi Bu, 2021/07/02 ABSTRACT: Differential Privacy for ML Series. In deep learning with differential privacy (DP), the neural network achieves the privacy usually at the cost of slower convergence (and thus lower performance) than its non-private counterpa
From playlist Differential Privacy for ML
Jonathan Weare (DDMCS@Turing): Stratification for Markov Chain Monte Carlo
Complex models in all areas of science and engineering, and in the social sciences, must be reduced to a relatively small number of variables for practical computation and accurate prediction. In general, it is difficult to identify and parameterize the crucial features that must be incorp
From playlist Data driven modelling of complex systems
Lecture 11: Edge Detection, Subpixel Position, CORDIC, Line Detection (US 6,408,109)
MIT 6.801 Machine Vision, Fall 2020 Instructor: Berthold Horn View the complete course: https://ocw.mit.edu/6-801F20 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP63pfpS1gV5P9tDxxL_e4W8O In this lecture, we will introduce some discussion on how patents work, their sti
From playlist MIT 6.801 Machine Vision, Fall 2020
High-frequency Component Helps Explain the Generalization of Convolutional Neural Networks | AISC
For slides and more information on the paper, visit https://ai.science/e/high-frequency-component-helps-explain-the-generalization-of-convolutional-neural-networks--HVAyCyALo5x54CyWLPXv Speaker: Haohan Wang; Host: Ali El-Sharif Motivation: Computer Vision implementations based on Convol
From playlist Explainability and Ethics
DIRECT 2021 14 Tuning Deep Learning Models Maldonado-Cruz
DIRECT Consortium at The University of Texas at Austin, working on novel methods and workflows in spatial, subsurface data analytics, geostatistics and machine learning. This is Tuning Ensemble Machine Learning Uncertainty Models by Eduardo Maldonado-Cruz. Join the consortium for access
From playlist DIRECT Consortium, The University of Texas at Austin
How to find the direction of a vector as a linear combination
Learn how to determine the magnitude and direction of a vector. The magnitude of a vector is the length of the vector. The magnitude of a vector is obtained by taking the square root of the sum of the squares of the components of the vector. The direction of a vector is obtained by taking
From playlist Vectors