Vector Analysis
Found 10 free book(s)
Factor Analysis - University of Minnesota
users.stat.umn.eduFactor Analysis Model Model Form Factor Model with m Common Factors X = (X1;:::;Xp)0is a random vector with mean vector and covariance matrix . The Factor Analysis model assumes that X = + LF + where L = f‘jkgp m denotes the matrix offactor loadings jk is the loading of the j-th variable on the k-th common factor F = (F1;:::;Fm)0denotes the vector of latentfactor scores
Metric Spaces - University of California, Davis
www.math.ucdavis.edudistance function. Most of the spaces that arise in analysis are vector, or linear, spaces, and the metrics on them are usually derived from a norm, which gives the “length” of a vector De nition 7.11. A normed vector space (X,∥ · ∥) is a vector space X (which we assume to be real) together with a function ∥·∥: X → R, called a ...
Principal Components Analysis
www.stat.cmu.edu354 CHAPTER 18. PRINCIPAL COMPONENTS ANALYSIS Setting the derivatives to zero at the optimum, we get wT w = 1 (18.19) vw = λw (18.20) Thus, desired vector w is an eigenvector of the covariance matrix v, and the maxi-mizing vector will be the one associated with the largest eigenvalue λ. This is good
Chapter 4 Vector Norms and Matrix Norms
www.cis.upenn.edu4.1. NORMED VECTOR SPACES 215 Let Sn−1 1 be the unit ball with respect to the norm, namely Sn−1 1 = {x ∈ E |x =1}. Now, Sn−1 1 is a closed and bounded subset of a finite-dimensionalvectorspace,sobyBolzano–Weiertrass,Sn−1 1 is compact. On the other hand, it is a well known result of analysis
What is Cluster Analysis?
www.stat.columbia.eduorder a vector giving the permutation of the original observations suitable for plotting, in the sense that a cluster plot using this ordering and matrix merge will not have crossings of the branches. labels labels for each of the objects being clustered. call the call which produced the result. method the cluster method that has been used.
Distributed Representations of Sentences and Documents
cs.stanford.eduunique vector, represented by a column in matrix W. The paragraph vector and word vectors are averaged or concate-nated to predict the next word in a context. In the experi-ments, we use concatenation as the method to combine the vectors. More formally, the only change in this model compared to the word vector framework is in equation 1, where h is
2A1VectorAlgebraandCalculus
www.robots.ox.ac.uk(By the way, a vector where the sign is uncertain is called a director.) ♣Example Q. Coulomb’s law states that the electrostatic force on charged particle Q due to another charged particle q1 is F = K Qq1 r2 ˆer where r is the vector from q1 to Q and ˆr is the unit vector in that same direction.
Dimensionality Reduction - Stanford University
infolab.stanford.edunonzero vector x0 and then iterate: xk+1:= Mxk kMxkk where kNk for a matrix or vector N denotes the Frobenius norm; that is, the square root of the sum of the squares of the elements of N. We multiply the current vector xk by the matrix M until convergence (i.e., kxk − xk+1k is less than some small, chosen constant). Let x be xk for that ...
Projectile Motion - Boston University
buphy.bu.eduThis is a vector equation and can be broken up into its x, y, and z components. Since the motion is in a plane, we need only look at the x and y components. If we neglect air resistance, the acceleration in the y direction is -g, due to gravity. The acceleration in the x direction is zero. Hence, the vector equation (1) becomes two scalar ...
Vector Autoregression - Stony Brook
www.ams.sunysb.eduOverview Vector Autoregression (VAR) model is an extension of univariate autoregression model to multivariate time series data VAR model is a multi-equation system where all the variables are treated as endogenous (dependent) There is one equation for each variable as dependent variable. In its reduced form, the right-hand side of each