MALLET主题建模OutOfMemoryError

Question

我使用MALLET进行主题建模.
http://mallet.cs.umass.edu/topics.php

首先,我尝试按照说明导入训练文档集.

bin/mallet import-dir --input /data/topic-input --output topic-input.mallet --keep-sequence --remove-stopwords

我总是得到OutOfMemoryError,虽然我"bin/mallet.bat"按照以下页面改变. Mallet主题建模

我设置set MALLET_MEMORY=32G.

我的数据集大小为30GB.

计算机内存就足够了.

我收到以下错误.

Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded
    at java.util.Arrays.copyOfRange(Arrays.java:3658)
    at java.lang.String.<init>(String.java:201)
    at java.lang.AbstractStringBuilder.substring(AbstractStringBuilder.java:909)
    at java.lang.StringBuffer.subSequence(StringBuffer.java:473)
    at cc.mallet.extract.StringSpan.constructTokenText(StringSpan.java:49)
    at cc.mallet.extract.StringSpan.<init>(StringSpan.java:33)
    at cc.mallet.pipe.CharSequence2TokenSequence.pipe(CharSequence2TokenSequence.java:68)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:294)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:282)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:290)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:282)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:290)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:282)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:290)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:282)
    at cc.mallet.types.InstanceList.addThruPipe(InstanceList.java:267)
    at cc.mallet.classify.tui.Text2Vectors.main(Text2Vectors.java:312)
$ bin/mallet import-dir --input ../Text --output topic-input.mallet --keep-sequence --remove-stopwords
Labels = 
   ../Text
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOfRange(Arrays.java:3658)
    at java.lang.String.<init>(String.java:201)
    at java.lang.AbstractStringBuilder.substring(AbstractStringBuilder.java:909)
    at java.lang.StringBuffer.subSequence(StringBuffer.java:473)
    at cc.mallet.extract.StringSpan.constructTokenText(StringSpan.java:49)
    at cc.mallet.extract.StringSpan.<init>(StringSpan.java:33)
    at cc.mallet.pipe.CharSequence2TokenSequence.pipe(CharSequence2TokenSequence.java:68)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:294)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:282)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:290)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:282)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:290)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:282)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:290)
    at cc.mallet.pipe.Pipe$SimplePipeInstanceIterator.next(Pipe.java:282)
    at cc.mallet.types.InstanceList.addThruPipe(InstanceList.java:267)
    at cc.mallet.classify.tui.Text2Vectors.main(Text2Vectors.java:312)

我该如何解决这个问题？谢谢.

Answer 1

您可以增加槌使用的内存.你的主目录槌在哪里？在mallet的主目录中,您有bin目录.在bin目录中,在文本编辑器中打开mallet文件,并将"MEMORY"设置为较高的值."MEMORY"的默认值为1g.您可以将其设置为4g.