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Back-clipping
Глоссарий по альпинизму и горному туризму |
A hazardous mistake that can be made while lead climbing. the belay rope is clipped into a quickdraw in the wrong direction causing an increase in friction on the rope and an increase in the likelihood of the rope becoming unclipped during a fall.
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Likelihood, английский
- Вероятность. правдоподобие.
- Правдоподобие; вероятность
- In probabilistic and statistical methods, the likelihood is a measure of the evidence for the data when a hypothesis is assumed to be true. it is commonly used in bayesian and quasi-bayesian techniques. a related measure, minimum message length, can be derived from information theoretic principles. as an example, suppose you observe a data value x that is assumed to be gaussian. the likelihood for that data when the assumed mean is, say, 5, and the variance is 10, is proportional to e-((x-5)2/2*10), the kernel of a gaussian distribution. a likelihood is typically calculated using the kernel, rather than the complete distribution function, which includes the normalizing constants. see also: minimum message length.
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Undercling, английский
A hold or flake that is upside down.
Ice axe, английский
A handy tool for safety and balance, having a pick/adze head and a spike at the opposite end of a shaft.
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