Results 11 to 20 of about 2,441,680 (241)

On Focal Loss for Class-Posterior Probability Estimation: A Theoretical Perspective [PDF]

open access: yesComputer Vision and Pattern Recognition, 2020
The focal loss has demonstrated its effectiveness in many real-world applications such as object detection and image classification, but its theoretical understanding has been limited so far.
Nontawat Charoenphakdee   +3 more
semanticscholar   +1 more source

An Adaptive Change Threshold Selection Method Based on Land Cover Posterior Probability and Spatial Neighborhood Information

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Change threshold selection (CTS) plays an important role in land cover change detection. The traditional CTS methods are mainly based on the information contained in grayscale histogram distributions or pixel neighborhoods.
H. Xing   +6 more
semanticscholar   +1 more source

Reconnecting p-Value and Posterior Probability Under One- and Two-Sided Tests [PDF]

open access: yesAmerican Statistician, 2018
As a convention, p-value is often computed in frequentist hypothesis testing and compared with the nominal significance level of 0.05 to determine whether or not to reject the null hypothesis. The smaller the p-value, the more significant the statistical
Haolun Shi, Guosheng Yin
semanticscholar   +1 more source

Deterministic and stochastic models of infection spread and testing in an isolated contingent

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2021
The mathematical SIR model generalisation for description of the infectious process dynamics development by adding a testing model is considered. The proposed procedure requires the expansion of states’ space dimension due to variables that cannot be ...
Anatoliy V. Chigarev   +2 more
doaj   +1 more source

Incentive-Compatible Surveys via Posterior Probabilities [PDF]

open access: yesTheory of Probability & Its Applications, 2020
We consider the problem of eliciting truthful responses to a survey question when the respondents share a common prior that the survey planner is agnostic about. The planner would therefore like to have a “universal” mechanism, which would induce honest answers for all possible priors. If the planner also requires a locality condition that ensures that
Cvitanić, J   +3 more
openaire   +2 more sources

A Critical Reassessment of the Saerens-Latinne-Decaestecker Algorithm for Posterior Probability Adjustment

open access: yesACM Trans. Inf. Syst., 2020
We critically re-examine the Saerens-Latinne-Decaestecker (SLD) algorithm, a well-known method for estimating class prior probabilities (“priors”) and adjusting posterior probabilities (“posteriors”) in scenarios characterized by distribution shift, i.e.,
Andrea Esuli   +2 more
semanticscholar   +1 more source

Posterior probability maps and SPMs [PDF]

open access: yesNeuroImage, 2003
This technical note describes the construction of posterior probability maps that enable conditional or Bayesian inferences about regionally specific effects in neuroimaging. Posterior probability maps are images of the probability or confidence that an activation exceeds some specified threshold, given the data.
K J, Friston, W, Penny
openaire   +2 more sources

Probabilistic River Water Mapping from Landsat-8 Using the Support Vector Machine Method

open access: yesRemote Sensing, 2020
River water extent is essential for river hydrological surveys. Traditional methods for river water mapping often result in significant uncertainties. This paper proposes a support vector machine (SVM)-based river water mapping method that can quantify ...
Qihang Liu   +3 more
doaj   +1 more source

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