When we perform gradient descent we adjust the parameters in the parameter space just by multiplying the step size with the gradient of the function. My question is why we need to multiply the gradient with the lear rate/step size and not only the unit vector in the direction of descent? why dont we divide the gradient vector by its magnitude?
2026-03-29 09:10:16.1774775416
Why while performing gradient descent we multiply the gradient vector with step size and not only the descent direction?
173 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in OPTIMIZATION
- Optimization - If the sum of objective functions are similar, will sum of argmax's be similar
- optimization with strict inequality of variables
- Gradient of Cost Function To Find Matrix Factorization
- Calculation of distance of a point from a curve
- Find all local maxima and minima of $x^2+y^2$ subject to the constraint $x^2+2y=6$. Does $x^2+y^2$ have a global max/min on the same constraint?
- What does it mean to dualize a constraint in the context of Lagrangian relaxation?
- Modified conjugate gradient method to minimise quadratic functional restricted to positive solutions
- Building the model for a Linear Programming Problem
- Maximize the function
- Transform LMI problem into different SDP form
Related Questions in VECTOR-SPACES
- Alternate basis for a subspace of $\mathcal P_3(\mathbb R)$?
- Does curl vector influence the final destination of a particle?
- Closure and Subsets of Normed Vector Spaces
- Dimension of solution space of homogeneous differential equation, proof
- Linear Algebra and Vector spaces
- Is the professor wrong? Simple ODE question
- Finding subspaces with trivial intersection
- verifying V is a vector space
- Proving something is a vector space using pre-defined properties
- Subspace of vector spaces
Related Questions in VECTOR-ANALYSIS
- Does curl vector influence the final destination of a particle?
- Gradient and Hessian of quadratic form
- Regular surfaces with boundary and $C^1$ domains
- Estimation of connected components
- Finding a unit vector that gives the maximum directional derivative of a vector field
- Gradient of transpose of a vector.
- Solve line integral
- Directional derivative: what is the relation between definition by limit and definition as dot product?
- Chain rule with intermediate vector function
- For which $g$ is $f(x)= g(||x||) \frac{x}{||x||}$ divergence free.
Related Questions in GRADIENT-DESCENT
- Gradient of Cost Function To Find Matrix Factorization
- Can someone explain the calculus within this gradient descent function?
- Established results on the convergence rate of iterates for Accelerated Gradient Descent?
- Sensitivity (gradient) of function solved using RK4
- Concerning the sequence of gradients in Nesterov's Accelerated Descent
- Gradient descent proof: justify $\left(\dfrac{\kappa - 1}{\kappa + 1}\right)^2 \leq \exp(-\dfrac{4t}{\kappa+1})$
- If the gradient of the logistic loss is never zero, does that mean the minimum can never be achieved?
- How does one show that the likelihood solution for logistic regression has a magnitude of infinity for separable data (Bishop exercise 4.14)?
- How to determinate that a constrained inequality system is not empty?
- How to show that the gradient descent for unconstrained optimization can be represented as the argmin of a quadratic?
Related Questions in NEURAL-NETWORKS
- Retrain of a neural network
- Angular values for input to a neural network
- Smooth, differentiable loss function 'bounding' $[0,1]$
- How to show that a gradient is a sum of gradients?
- Approximation rates of Neural Networks
- How does using chain rule in backprogation algorithm works?
- Computing the derivative of a matrix-vector dot product
- Need to do an opposite operation to a dot product with non square matrices, cannot figure out how.
- Paradox of square error function and derivates in neural networks
- Momentum in gradient descent
Trending Questions
- Induction on the number of equations
- How to convince a math teacher of this simple and obvious fact?
- Find $E[XY|Y+Z=1 ]$
- Refuting the Anti-Cantor Cranks
- What are imaginary numbers?
- Determine the adjoint of $\tilde Q(x)$ for $\tilde Q(x)u:=(Qu)(x)$ where $Q:U→L^2(Ω,ℝ^d$ is a Hilbert-Schmidt operator and $U$ is a Hilbert space
- Why does this innovative method of subtraction from a third grader always work?
- How do we know that the number $1$ is not equal to the number $-1$?
- What are the Implications of having VΩ as a model for a theory?
- Defining a Galois Field based on primitive element versus polynomial?
- Can't find the relationship between two columns of numbers. Please Help
- Is computer science a branch of mathematics?
- Is there a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?
- Identification of a quadrilateral as a trapezoid, rectangle, or square
- Generator of inertia group in function field extension
Popular # Hahtags
second-order-logic
numerical-methods
puzzle
logic
probability
number-theory
winding-number
real-analysis
integration
calculus
complex-analysis
sequences-and-series
proof-writing
set-theory
functions
homotopy-theory
elementary-number-theory
ordinary-differential-equations
circles
derivatives
game-theory
definite-integrals
elementary-set-theory
limits
multivariable-calculus
geometry
algebraic-number-theory
proof-verification
partial-derivative
algebra-precalculus
Popular Questions
- What is the integral of 1/x?
- How many squares actually ARE in this picture? Is this a trick question with no right answer?
- Is a matrix multiplied with its transpose something special?
- What is the difference between independent and mutually exclusive events?
- Visually stunning math concepts which are easy to explain
- taylor series of $\ln(1+x)$?
- How to tell if a set of vectors spans a space?
- Calculus question taking derivative to find horizontal tangent line
- How to determine if a function is one-to-one?
- Determine if vectors are linearly independent
- What does it mean to have a determinant equal to zero?
- Is this Batman equation for real?
- How to find perpendicular vector to another vector?
- How to find mean and median from histogram
- How many sides does a circle have?