[ https://issues.apache.org/jira/browse/SPARK-18291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yanbo Liang updated SPARK-18291: -------------------------------- Fix Version/s: (was: 2.1.0) > SparkR glm predict should output original label when family = "binomial" > ------------------------------------------------------------------------ > > Key: SPARK-18291 > URL: https://issues.apache.org/jira/browse/SPARK-18291 > Project: Spark > Issue Type: Bug > Components: ML, SparkR > Reporter: Yanbo Liang > Assignee: Yanbo Liang > Attachments: SparkR2.1decisionoutputschemaforGLMs.pdf > > > SparkR spark.glm predict should output original label when family = > "binomial". > For example, we can run the following code in sparkr shell: > {code} > training <- suppressWarnings(createDataFrame(iris)) > training <- training[training$Species %in% c("versicolor", "virginica"), ] > model <- spark.glm(training, Species ~ Sepal_Length + Sepal_Width,family = > binomial(link = "logit")) > showDF(predict(model, training)) > {code} > The prediction column is double value which makes no sense to users. > {code} > +------------+-----------+------------+-----------+----------+-----+-------------------+ > |Sepal_Length|Sepal_Width|Petal_Length|Petal_Width| Species|label| > prediction| > +------------+-----------+------------+-----------+----------+-----+-------------------+ > | 7.0| 3.2| 4.7| 1.4|versicolor| 0.0| > 0.8271421517601544| > | 6.4| 3.2| 4.5| 1.5|versicolor| 0.0| > 0.6044595910413112| > | 6.9| 3.1| 4.9| 1.5|versicolor| 0.0| > 0.7916340858281998| > | 5.5| 2.3| 4.0| 1.3|versicolor| > 0.0|0.16080518180591158| > | 6.5| 2.8| 4.6| 1.5|versicolor| 0.0| > 0.6112229217050189| > | 5.7| 2.8| 4.5| 1.3|versicolor| 0.0| > 0.2555087295500885| > | 6.3| 3.3| 4.7| 1.6|versicolor| 0.0| > 0.5681507664364834| > | 4.9| 2.4| 3.3| 1.0|versicolor| > 0.0|0.05990570219972002| > | 6.6| 2.9| 4.6| 1.3|versicolor| 0.0| > 0.6644434078306246| > | 5.2| 2.7| 3.9| 1.4|versicolor| > 0.0|0.11293577405862379| > | 5.0| 2.0| 3.5| 1.0|versicolor| > 0.0|0.06152372321585971| > | 5.9| 3.0| 4.2| 1.5|versicolor| > 0.0|0.35250697207602555| > | 6.0| 2.2| 4.0| 1.0|versicolor| > 0.0|0.32267018290814303| > | 6.1| 2.9| 4.7| 1.4|versicolor| 0.0| > 0.433391153814592| > | 5.6| 2.9| 3.6| 1.3|versicolor| 0.0| > 0.2280744262436993| > | 6.7| 3.1| 4.4| 1.4|versicolor| 0.0| > 0.7219848389339459| > | 5.6| 3.0| 4.5| 1.5|versicolor| > 0.0|0.23527698971404695| > | 5.8| 2.7| 4.1| 1.0|versicolor| 0.0| > 0.285024533520016| > | 6.2| 2.2| 4.5| 1.5|versicolor| 0.0| > 0.4107047877447493| > | 5.6| 2.5| 3.9| 1.1|versicolor| > 0.0|0.20083561961645083| > +------------+-----------+------------+-----------+----------+-----+-------------------+ > {code} > The prediction value should be the original label like: > {code} > +------------+-----------+------------+-----------+----------+-----+----------+ > |Sepal_Length|Sepal_Width|Petal_Length|Petal_Width| > Species|label|prediction| > +------------+-----------+------------+-----------+----------+-----+----------+ > | 7.0| 3.2| 4.7| 1.4|versicolor| 0.0| > virginica| > | 6.4| 3.2| 4.5| 1.5|versicolor| 0.0| > virginica| > | 6.9| 3.1| 4.9| 1.5|versicolor| 0.0| > virginica| > | 5.5| 2.3| 4.0| 1.3|versicolor| > 0.0|versicolor| > | 6.5| 2.8| 4.6| 1.5|versicolor| 0.0| > virginica| > | 5.7| 2.8| 4.5| 1.3|versicolor| > 0.0|versicolor| > | 6.3| 3.3| 4.7| 1.6|versicolor| 0.0| > virginica| > | 4.9| 2.4| 3.3| 1.0|versicolor| > 0.0|versicolor| > | 6.6| 2.9| 4.6| 1.3|versicolor| 0.0| > virginica| > | 5.2| 2.7| 3.9| 1.4|versicolor| > 0.0|versicolor| > | 5.0| 2.0| 3.5| 1.0|versicolor| > 0.0|versicolor| > | 5.9| 3.0| 4.2| 1.5|versicolor| > 0.0|versicolor| > | 6.0| 2.2| 4.0| 1.0|versicolor| > 0.0|versicolor| > | 6.1| 2.9| 4.7| 1.4|versicolor| > 0.0|versicolor| > | 5.6| 2.9| 3.6| 1.3|versicolor| > 0.0|versicolor| > | 6.7| 3.1| 4.4| 1.4|versicolor| 0.0| > virginica| > | 5.6| 3.0| 4.5| 1.5|versicolor| > 0.0|versicolor| > | 5.8| 2.7| 4.1| 1.0|versicolor| > 0.0|versicolor| > | 6.2| 2.2| 4.5| 1.5|versicolor| > 0.0|versicolor| > | 5.6| 2.5| 3.9| 1.1|versicolor| > 0.0|versicolor| > +------------+-----------+------------+-----------+----------+-----+----------+ > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org