[英]List of part of speech tags per sentence with POS Tagger Stanford NPL in C#
Using the POS Tagger of Stanford NPL .NET, I'm trying to extract a detailed list of part of speech tags per sentence. 我试图使用Stanford NPL .NET的POS Tagger,提取每个句子的部分语音标签的详细列表。
eg: "Have a look over there. Look at the car!" 例如:“去那儿看看。看看车!”
Have/VB a/DT look/NN over/IN there/RB ./. 具有/ VB a / DT外观/ NN over / IN那里/ RB ./。 Look/VB at/IN the/DT car/NN !/. 在/ DT车/ NN!/处/查看VB。
I need: 我需要:
I managed to achieve this by accessing the private fields of the result via reflection. 我设法通过反射访问结果的私有字段来实现这一点。
I know it's ugly, not efficient and very bad, but that's the only I found until know. 我知道这很丑陋,效率不高而且非常糟糕,但这是我唯一发现的,直到知道。 Hence my question; 因此,我的问题是: is there any built-in way to access such information? 有没有内置的方式来访问这些信息?
using (var streamReader = new StringReader(rawText))
{
var tokenizedSentences = MaxentTagger.tokenizeText(streamReader).toArray();
foreach (ArrayList tokenizedSentence in tokenizedSentences)
{
var taggedSentence = _posTagger.tagSentence(tokenizedSentence).toArray();
for (int index = 0; index < taggedSentence.Length; index++)
{
var partOfSpeech = ((StringLabel) (taggedSentence[index]));
var posText = partOfSpeech.value();
var posTag = ReflectionHelper.GetInstanceField(typeof (TaggedWord), partOfSpeech, "tag") as string;
var posBeginPosition = (int)ReflectionHelper.GetInstanceField(typeof (StringLabel), partOfSpeech, "beginPosition");
var posEndPosition = (int)ReflectionHelper.GetInstanceField(typeof (StringLabel), partOfSpeech, "endPosition");
// process the pos
}
}
ReflectionHelper: ReflectionHelper:
public static object GetInstanceField<T>(T instance, string fieldName)
{
const BindingFlags bindFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static;
object result = null;
var field = typeof(T).GetField(fieldName, bindFlags);
if (field != null)
{
result = field.GetValue(instance);
}
return result;
}
The solution is pretty easy. 解决方案非常简单。 Just cast the part of speech (taggedSentence[index]) to a TaggedWord. 只需将词性(taggedSentence [index])转换为TaggedWord。 You can then easily access these properties from the getters beginPosition(), endPosition(), tag() and value(). 然后,您可以从getter beginPosition(),endPosition(),tag()和value()轻松访问这些属性。
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