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The meaning of "gold standard" may differ between practical medicine and the statistical ideal. With some medical conditions, only an autopsy can guarantee diagnostic certainty. In these cases, the gold standard test is the best test that keeps the patient alive, and even gold standard tests can require follow-up to confirm or refute the ...
Data-driven prognostics usually use pattern recognition and machine learning techniques to detect changes in system states. [3] The classical data-driven methods for nonlinear system prediction include the use of stochastic models such as the autoregressive (AR) model, the threshold AR model, the bilinear model, the projection pursuit, the multivariate adaptive regression splines, and the ...
The Voluntary Gold Standard (GS-VER), a standard for use within the voluntary carbon market, was launched in May 2006. [2] The programs were created following a 12-month consultation period that included workshops and web-based consultation conducted by an independent standard advisory board composed of non-governmental organizations ( NGOs ...
The rationale for the diagnostic odds ratio is that it is a single indicator of test performance (like accuracy and Youden's J statistic) but which is independent of prevalence (unlike accuracy) and is presented as an odds ratio, which is familiar to medical practitioners. [citation needed]
In medicine, a biomarker is a measurable indicator of the severity or presence of some disease state. It may be defined as a "cellular, biochemical or molecular alteration in cells, tissues or fluids that can be measured and evaluated to indicate normal biological processes, pathogenic processes, or pharmacological responses to a therapeutic intervention."
The International Prognostic Scoring System (IPSS), originally published in 1997, is used by many doctors to help assess the severity of a patient's myelodysplastic syndrome (MDS). Based on the IPSS score, the patient's history, and the physician's own personal observations, the physician will design a treatment plan to address the MDS.
In practice, however, specie flows during the classical gold standard era failed to exhibit the self-corrective behavior described above. Gold finding its way back from surplus to deficit countries to exploit price differences was a painfully slow process, and central banks found it far more effective to raise or lower domestic price levels by lowering or raising domestic interest rates.
Indicator kriging uses indicator functions instead of the process itself, in order to estimate transition probabilities. Multiple-indicator kriging is a version of indicator kriging working with a family of indicators. Initially, MIK showed considerable promise as a new method that could more accurately estimate overall global mineral deposit ...