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Loss function - Wikipedia
In mathematical optimization and decision theory, a loss function or cost function (sometimes also called an error function) is a function that maps an event or values of one or more variables onto a real number intuitively representing some "cost" associated with the event. An optimization problem seeks to … See more
Regret
Leonard J. Savage argued that using non-Bayesian methods such as minimax, the loss function should be based on the idea of regret, i.e., the loss associated with a decision should be … See moreIn some contexts, the value of the loss function itself is a random quantity because it depends on the outcome of a random variable X.
Statistics See moreSound statistical practice requires selecting an estimator consistent with the actual acceptable variation experienced in the context of a particular applied problem. Thus, in the applied … See more
• Aretz, Kevin; Bartram, Söhnke M.; Pope, Peter F. (April–June 2011). "Asymmetric Loss Functions and the Rationality of Expected Stock … See more
middle of the 20th centuryAbraham Wald reintroduced the concept of loss function in statistics1920sHarald Cramér used loss function in actuarial science to model benefits paid over premiums20th centuryThe quadratic loss function is commonly used in statistics, including t-tests, regression models, design of experiments, and much else, using least squares methods applied using linear regression theory, which is based on the quadratic loss function.20th centuryThe 0-1 loss function is frequently used in statistics and decision theory.20th centuryThe two-parameter loss function is used in trading to model the spread between bid and ask.20th centuryThe use of loss function is common in mathematical optimization and decision theory.20th centuryThe loss function is used in financial risk management to map to a monetary loss.20th centuryThe loss function is used in optimal control to model the penalty for failing to achieve a desired value.20th centuryThe loss function is used in classification to model the penalty for an incorrect classification of an example.20th centuryThe loss function is used in statistics for parameter estimation.In many applications, objective functions, including loss functions as a particular case, are determined by the problem formulation. In other situations, the decision maker’s preference must be elicited and represented by a scalar-valued function … See more
A decision rule makes a choice using an optimality criterion. Some commonly used criteria are:
• Minimax: Choose the decision rule with the lowest worst loss — that is, minimize the worst-case (maximum possible) loss:
• See moreWikipedia text under CC-BY-SA license Loss functions for classification - Wikipedia
Huber loss - Wikipedia
Loss Functions in Machine Learning Explained
WEBNov 24, 2023 · The loss function, also referred to as the error function, is a crucial component in machine learning that quantifies the difference between the predicted outputs of a machine learning algorithm and the …
Loss Functions — ML Glossary documentation - Read …
WEBCross-Entropy ¶. Cross-entropy loss, or log loss, measures the performance of a classification model whose output is a probability value …
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Loss function - Computer Science Wiki
Cross-Entropy Loss Function in Machine Learning: …
WEBAug 10, 2024 · Cross-entropy, also known as logarithmic loss or log loss, is a popular loss function used in machine learning to measure the performance of a classification model. It measures the difference …
Loss Functions and Their Use In Neural Networks
WEBAug 4, 2022 · A loss function is a function that compares the target and predicted output values; measures how well the neural network models the training data. When training, we aim to minimize this loss between …
Loss function - Wikipedia - BME
Loss function - Simple English Wikipedia, the free encyclopedia
Loss function | Linear regression, statistics, machine …
WEBA loss function quantifies the losses generated by the errors in statistical or machine learning models. Learn about different types of loss functions, such as quadratic, absolute, Huber, and log-cosh, and …
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