uggs nederland Computer Network Architecture _4314 -

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Computer Network Architecture

ic model. Although people in this area also made a number of other mathematical models, but some models have become obsolete, some still in the experimental stage. The Logistic model in theory and practice have been more fully validated by the model can greatly reduce the risk of system development,[link widoczny dla zalogowanych], but also conducive to the integration with other systems to play the advantages of integration of resources. Parameter estimation problem is with the difficulty of this task. Although maximum likelihood estimation method can be effective in most cases to estimate the unknown parameters,[link widoczny dla zalogowanych], but the method there are still some drawbacks: If you can not deal with specific response patterns, with the parameters may not exist sufficient statistics, is not necessarily the consistency of structural parameters estimator and so on. The other estimation methods have some of its shortcomings: marginal maximum likelihood estimation (MMLE) and help to eliminate the associated EM algorithm although the parameters, but the convergence is too slow; marginal Bayesian estimation response mode although you can solve the same special question,[link widoczny dla zalogowanych], but when used must be given prior distribution of parameters, if the prior distribution of the actual situation if far off, then the result may be far from the true value. How to choose the best under different conditions, the method should be further studied
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