From 2c586f506de9e2ba592afae1f0c73b6ae631bb96 Mon Sep 17 00:00:00 2001 From: Yanbo Liang Date: Thu, 12 Jan 2017 00:58:30 -0800 Subject: [SPARK-19158][SPARKR][EXAMPLES] Fix ml.R example fails due to lack of e1071 package. ## What changes were proposed in this pull request? ```ml.R``` example depends on ```e1071``` package, if it's not available in users' environment, it will fail. I think the example should not depends on third-party packages, so I update it to remove the dependency. ## How was this patch tested? Manual test. Author: Yanbo Liang Closes #16548 from yanboliang/spark-19158. --- examples/src/main/r/ml/ml.R | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'examples') diff --git a/examples/src/main/r/ml/ml.R b/examples/src/main/r/ml/ml.R index d601590c22..05f5199aeb 100644 --- a/examples/src/main/r/ml/ml.R +++ b/examples/src/main/r/ml/ml.R @@ -49,17 +49,16 @@ unlink(modelPath) ############################ fit models with spark.lapply ##################################### # Perform distributed training of multiple models with spark.lapply -costs <- exp(seq(from = log(1), to = log(1000), length.out = 5)) -train <- function(cost) { - stopifnot(requireNamespace("e1071", quietly = TRUE)) - model <- e1071::svm(Species ~ ., data = iris, cost = cost) - summary(model) +algorithms <- c("Hartigan-Wong", "Lloyd", "MacQueen") +train <- function(algorithm) { + model <- kmeans(x = iris[1:4], centers = 3, algorithm = algorithm) + model$withinss } -model.summaries <- spark.lapply(costs, train) +model.withinss <- spark.lapply(algorithms, train) -# Print the summary of each model -print(model.summaries) +# Print the within-cluster sum of squares for each model +print(model.withinss) # Stop the SparkSession now sparkR.session.stop() -- cgit v1.2.3