Vector - A vector is an element of a vector space.
Vector field reconstruction - Vector field reconstruction estimates a function that assigns a vector to each location in a domain, using incomplete, noisy, or scattered observations.
Vector length - Vector length measures the magnitude of a vector according to a chosen norm.
Vector optimization - Vector optimization optimizes an objective whose value is a vector rather than a single number, using a specified rule for comparing vectors.
Vector semantics - Vector semantics studies and represents aspects of meaning using vectors and relationships between them.
Vertical federated learning - Vertical federated learning is collaborative model training in which participants hold different features about the same or overlapping entities.
Very large-scale neighborhood search - Very large-scale neighborhood search is an optimization approach that seeks improvements within a very large set of related candidate solutions, often of...
VIKOR method - The VIKOR method is a multicriteria decision-making method that ranks alternatives and identifies compromise choices using their shortfalls from ideal...
Wald's maximin model - Wald's maximin model is a decision rule that selects the action with the best worst-case payoff among the states considered possible.
Weighted Alternating Least Squares - Weighted Alternating Least Squares, or WALS, is an algorithm for fitting matrix-factorization models by repeatedly solving weighted least-squares problems...
Weighted least squares - Weighted least squares fits a model by minimizing a sum of squared prediction errors in which each observation has a nonnegative weight.
Wide matrix - A wide matrix has more columns than rows. If a matrix has m rows and d columns, it is wide when d>m.
Word-context matrix - A word-context matrix records how target words occur with selected contexts in a text collection.
Zero-gradient condition - The zero-gradient condition states that every first partial derivative of a differentiable objective is zero at a candidate point.
Zionts - Wallenius method - The Zionts - Wallenius method is an interactive approach to multicriteria optimization that uses a decision maker's judgments about proposed trade-offs to...