Github user yanboliang commented on a diff in the pull request:

    https://github.com/apache/spark/pull/15883#discussion_r87965522
  
    --- Diff: R/pkg/R/mllib.R ---
    @@ -936,20 +939,23 @@ setMethod("predict", signature(object = 
"MultilayerPerceptronClassificationModel
     # Returns the summary of a Multilayer Perceptron Classification Model 
produced by \code{spark.mlp}
     
     #' @param object a Multilayer Perceptron Classification Model fitted by 
\code{spark.mlp}
    -#' @return \code{summary} returns a list containing \code{labelCount}, 
\code{layers}, and
    -#'         \code{weights}. For \code{weights}, it is a numeric vector with 
length equal to
    -#'         the expected given the architecture (i.e., for 8-10-2 network, 
100 connection weights).
    +#' @return \code{summary} returns a list containing \code{numOfInputs}, 
\code{numOfOutputs},
    +#'         \code{layers}, and \code{weights}. For \code{weights}, it is a 
numeric vector with
    +#'         length equal to the expected given the architecture (i.e., for 
8-10-2 network,
    +#'         112 connection weights).
    --- End diff --
    
    Here should be 112 rather than 110, it should be calculated by 8 * 10 + 10 
* 2 + 10 + 2. You can refer the test case to verify it. 


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