Apache spark 使用text8文件的Spark Word2Vec示例
我试图从apache.spark.org(代码如下&整个教程在这里:)运行这个示例,使用他们在站点()上引用的text8文件: 当我尝试适应这个模型时,我总是会遇到java堆错误。我在python中也得到了同样的结果。我还使用java_选项增加了java内存大小 该文件只有100MB,所以我认为我的内存设置不正确,但我不确定这是否是根本原因 还有人在笔记本电脑上尝试过这个例子吗Apache spark 使用text8文件的Spark Word2Vec示例,apache-spark,Apache Spark,我试图从apache.spark.org(代码如下&整个教程在这里:)运行这个示例,使用他们在站点()上引用的text8文件: 当我尝试适应这个模型时,我总是会遇到java堆错误。我在python中也得到了同样的结果。我还使用java_选项增加了java内存大小 该文件只有100MB,所以我认为我的内存设置不正确,但我不确定这是否是根本原因 还有人在笔记本电脑上尝试过这个例子吗 我不能把文件放在我们公司的服务器上,因为我们不应该导入外部数据,所以我只能在我的个人笔记本电脑上工作。如果你有什么建议
我不能把文件放在我们公司的服务器上,因为我们不应该导入外部数据,所以我只能在我的个人笔记本电脑上工作。如果你有什么建议,我很乐意听。谢谢 首先,我是Spark的新手,所以其他人可能会有更快更好的解决方案。 我在运行这个示例代码时遇到了同样的困难。 我设法使其工作,主要是通过:
export SPARK_MASTER_IP=192.168.1.53
export SPARK_MASTER_PORT=7077
export SPARK_MASTER_WEBUI_PORT=8080
export SPARK_DAEMON_MEMORY=1G
# Worker : 1 by server
# Number of worker instances to run on each machine (default: 1).
# You can make this more than 1 if you have have very large machines and would like multiple Spark worker processes.
# If you do set this, make sure to also set SPARK_WORKER_CORES explicitly to limit the cores per worker,
# or else each worker will try to use all the cores.
export SPARK_WORKER_INSTANCES=2
# Total number of cores to allow Spark applications to use on the machine (default: all available cores).
export SPARK_WORKER_CORES=7
#Total amount of memory to allow Spark applications to use on the machine, e.g. 1000m, 2g
# (default: total memory minus 1 GB);
# note that each application's individual memory is configured using its spark.executor.memory property.
export SPARK_WORKER_MEMORY=8G
export SPARK_WORKER_DIR=/tmp
# Executor : 1 by application run on the server
# export SPARK_EXECUTOR_INSTANCES=4
# export SPARK_EXECUTOR_MEMORY=4G
export SPARK_SCALA_VERSION="2.10"
Scala文件以运行示例:
import org.apache.spark.SparkContext
import org.apache.spark.SparkContext._
import org.apache.spark.SparkConf
import org.apache.log4j.Logger
import org.apache.log4j.Level
import org.apache.spark.mllib.feature.{Word2Vec, Word2VecModel}
object SparkDemo {
def log[A](key:String)(job : =>A) = {
val start = System.currentTimeMillis
val output = job
println("===> %s in %s seconds"
.format(key, (System.currentTimeMillis - start) / 1000.0))
output
}
def main(args: Array[String]):Unit ={
val modelName ="w2vModel"
val sc = new SparkContext(
new SparkConf()
.setAppName("SparkDemo")
.set("spark.executor.memory", "8G")
.set("spark.driver.maxResultSize", "16G")
.setMaster("spark://192.168.1.53:7077") // ip of the spark master.
// .setMaster("local[2]") // does not work... workers loose contact with the master after 120s
)
// take a look into target folder if you are unsure how the jar is named
// onliner to compile / run : sbt package && sbt run
sc.addJar("./target/scala-2.10/sparkling_2.10-0.1.jar")
val input = sc.textFile("./text8").map(line => line.split(" ").toSeq)
val word2vec = new Word2Vec()
val model = log("compute model") { word2vec.fit(input) }
log ("save model") { model.save(sc, modelName) }
val synonyms = model.findSynonyms("china", 40)
for((synonym, cosineSimilarity) <- synonyms) {
println(s"$synonym $cosineSimilarity")
}
val model2 = log("reload model") { Word2VecModel.load(sc, modelName) }
}
}
import org.apache.spark.SparkContext
导入org.apache.spark.SparkContext_
导入org.apache.spark.SparkConf
导入org.apache.log4j.Logger
导入org.apache.log4j.Level
导入org.apache.spark.mllib.feature.{Word2Vec,Word2VecModel}
对象SparkDemo{
def日志[A](键:字符串)(作业=>A)={
val start=System.currentTimeMillis
val输出=作业
println(“==>%s,在%s秒内”
.格式(键,(System.currentTimeMillis-start)/1000.0)
输出
}
def main(参数:数组[字符串]):单位={
val modelName=“w2vModel”
val sc=新的SparkContext(
新SparkConf()
.setAppName(“SparkDemo”)
.set(“spark.executor.memory”,“8G”)
.set(“spark.driver.maxResultSize”,“16G”)
.setMaster(“spark://192.168.1.53:7077”//spark master的ip。
//.setMaster(“本地[2]”//不工作…工人在120秒后与主机失去联系
)
//如果您不确定jar是如何命名的,请查看目标文件夹
//要编译/运行的联机程序:sbt包和sbt运行
sc.addJar(“./target/scala-2.10/sparkling_2.10-0.1.jar”)
val input=sc.textFile(“./text8”).map(line=>line.split(“”.toSeq)
val word2vec=新的word2vec()
val model=log(“计算模型”){word2vec.fit(输入)}
日志(“保存模型”){model.save(sc,modelName)}
val同义词=model.findSynonyms(“中国”,40)
for((同义词,cosineSimilarity)sc.textFile
仅在换行符上拆分,而text8不包含换行符
您正在创建一个1行RDD。.map(line=>line.split(“”.toSeq)
创建另一个类型为RDD[Seq[String]]
的1行RDD
Word2Vec在RDD的每行1句话的情况下效果最好(这也应该避免Java堆错误)。不幸的是,text8去掉了句点,因此您不能只拆分句点,但您可以找到原始版本以及用于处理它的perl脚本,编辑脚本以不删除句点并不困难。此文件的问题是它位于一行中。这意味着您正试图将孔线放入一行中e数据字段。这不是标记化了吗?.map(line=>line.split(“”.toSeq)没有标记化的意义。可能在一个点上拆分更表达。我也遇到过同样的情况。我尝试将此文件拆分为行,但出现了相同的错误。我使用的是spark 1.4.1
export SPARK_MASTER_IP=192.168.1.53
export SPARK_MASTER_PORT=7077
export SPARK_MASTER_WEBUI_PORT=8080
export SPARK_DAEMON_MEMORY=1G
# Worker : 1 by server
# Number of worker instances to run on each machine (default: 1).
# You can make this more than 1 if you have have very large machines and would like multiple Spark worker processes.
# If you do set this, make sure to also set SPARK_WORKER_CORES explicitly to limit the cores per worker,
# or else each worker will try to use all the cores.
export SPARK_WORKER_INSTANCES=2
# Total number of cores to allow Spark applications to use on the machine (default: all available cores).
export SPARK_WORKER_CORES=7
#Total amount of memory to allow Spark applications to use on the machine, e.g. 1000m, 2g
# (default: total memory minus 1 GB);
# note that each application's individual memory is configured using its spark.executor.memory property.
export SPARK_WORKER_MEMORY=8G
export SPARK_WORKER_DIR=/tmp
# Executor : 1 by application run on the server
# export SPARK_EXECUTOR_INSTANCES=4
# export SPARK_EXECUTOR_MEMORY=4G
export SPARK_SCALA_VERSION="2.10"
import org.apache.spark.SparkContext
import org.apache.spark.SparkContext._
import org.apache.spark.SparkConf
import org.apache.log4j.Logger
import org.apache.log4j.Level
import org.apache.spark.mllib.feature.{Word2Vec, Word2VecModel}
object SparkDemo {
def log[A](key:String)(job : =>A) = {
val start = System.currentTimeMillis
val output = job
println("===> %s in %s seconds"
.format(key, (System.currentTimeMillis - start) / 1000.0))
output
}
def main(args: Array[String]):Unit ={
val modelName ="w2vModel"
val sc = new SparkContext(
new SparkConf()
.setAppName("SparkDemo")
.set("spark.executor.memory", "8G")
.set("spark.driver.maxResultSize", "16G")
.setMaster("spark://192.168.1.53:7077") // ip of the spark master.
// .setMaster("local[2]") // does not work... workers loose contact with the master after 120s
)
// take a look into target folder if you are unsure how the jar is named
// onliner to compile / run : sbt package && sbt run
sc.addJar("./target/scala-2.10/sparkling_2.10-0.1.jar")
val input = sc.textFile("./text8").map(line => line.split(" ").toSeq)
val word2vec = new Word2Vec()
val model = log("compute model") { word2vec.fit(input) }
log ("save model") { model.save(sc, modelName) }
val synonyms = model.findSynonyms("china", 40)
for((synonym, cosineSimilarity) <- synonyms) {
println(s"$synonym $cosineSimilarity")
}
val model2 = log("reload model") { Word2VecModel.load(sc, modelName) }
}
}