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36125651 Neural Networks for Pattern Recognition – Statistical
36125651 Neural Networks for Pattern Recognition – Statistical

... Instructor: Prof. Mayer Aladjem, http://www.ee.bgu.ac.il/~aladjem THIS COURSE IS INTENDED TO BE LARGELY SELF-CONTAINED PREREQUISITES: basic undergraduate mathematical courses. This course is suitable for all fields of specialization of Electrical & Computer Engineering. This course will cover the th ...
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... ~. will set the right-hand side of the zero-inflation formula identical to the righthand side of the main (conditional effects) formula; terms can also be added or subtracted. Offset terms will automatically be dropped from the conditional effects formula. The zero-inflation model uses a logit link. ...
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on p (D+   YA+)
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Mixture model

In statistics, a mixture model is a probabilistic model for representing the presence of subpopulations within an overall population, without requiring that an observed data set should identify the sub-population to which an individual observation belongs. Formally a mixture model corresponds to the mixture distribution that represents the probability distribution of observations in the overall population. However, while problems associated with ""mixture distributions"" relate to deriving the properties of the overall population from those of the sub-populations, ""mixture models"" are used to make statistical inferences about the properties of the sub-populations given only observations on the pooled population, without sub-population identity information.Some ways of implementing mixture models involve steps that attribute postulated sub-population-identities to individual observations (or weights towards such sub-populations), in which case these can be regarded as types of unsupervised learning or clustering procedures. However not all inference procedures involve such steps.Mixture models should not be confused with models for compositional data, i.e., data whose components are constrained to sum to a constant value (1, 100%, etc.). However, compositional models can be thought of as mixture models, where members of the population are sampled at random. Conversely, mixture models can be thought of as compositional models, where the total size of the population has been normalized to 1.
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