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一個TDM我有以下代碼:Weka的API:創建使用StringToWordVector
ArrayList<Attribute> attributes = new ArrayList<>()
attributes.add(new Attribute("tweet", true))
ArrayList<String> theLines = new ArrayList<>()
File cleanestTweets = new File("cleanestTweets.txt")
File savedResults = new File("savedResults.arff")
Instances instances
try {
Scanner console = new Scanner(cleanestTweets)
while (console.hasNextLine()) {
String line = console.nextLine()
theLines.add(theLine)
}
Instance ins = new DenseInstance(1)
instances = new Instances("TwitterData", attributes, theLines.size())
theLines.each { it ->
ins.setValue(attributes[0], it)
instances.add(ins)
}
StringToWordVector filter = new StringToWordVector()
filter.setInputFormat(instances)
filter.setOutputWordCounts(true)
filter.setTFTransform(true)
filter.setDictionaryFileToSaveTo(savedResults)
filter.getDictionaryFileToSaveTo()
} catch (IOException e) {
}
它創建的實例代碼工作正常。然後我嘗試創建一個TDM並將其寫入savedResults.txt。運行代碼時,沒有任何內容寫入savedResults.txt。我不完全確定爲什麼。我已閱讀documentation,但沒有提及任何內容。