What is distribution?

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specifies the distribution in gradient boosting tree. Default: BINARY. BINARY: this value is useful for binary classification. GAUSSIAN: this value is useful for regression trees. MULTINOMIAL: this value is useful for multinomial distribution for classification with more than two classes. POISSON: this value is useful for poisson distribution. TWEEDIE: this value is useful for tweedie distribution.
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gbtreeTrain

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