نتایج جستجو برای: exponential lead time
تعداد نتایج: 2184933 فیلتر نتایج به سال:
Determination of survival time among persons with screen-detected cancer is subject to lead time and length biases. The authors propose a simple correction for lead time, assuming an exponential distribution of the preclinical screen-detectable period. Assuming two latent categories of tumors, one of which is more prone to screen detection and correspondingly less prone to death from the cancer...
In this paper explicit expressions and some recurrence relations are derived for marginal and joint moment generating functions of generalized order statistics from Erlang-truncated exponential distribution. The results for k-th record values and order statistics are deduced from the relations derived. Further, a characterizing result of this distribution on using the conditional expectation of...
We extend previous collapsing results involving the exponential hierarchy by using recent hardness-randomness trade-off results. Specifically, we show that if the second level of the exponential hierarchy has polynomialsized circuits, then it collapses all the way down to MA.
A set is autoreducible if it can be reduced to itself by a Turing machine that does not ask its own input to the oracle. We use autoreducibility to separate the polynomial-time hierarchy from polynomial space by showing that all Turing-complete sets for certain levels of the exponential-time hierarchy are autoreducible but there exists some Turing-complete set for doubly exponential space that ...
In this paper, we introduce a new time series model having stochastic exponential tail. This is constructed based on the Normal Tempered Stable distribution with time-varying parameter. The captures tail, which generates volatility smile effect and term structure in option pricing. Moreover, describes of volatility. We empirically show skewness kurtosis by applying to analyze S&P 500 index retu...
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