OpenNLP NameFinder不起作用

Question

我是OpenNLP的新手，并且遵循了NameFinder的文档。我已经下载了OpenNLP版本1.7.2并从OpenNLP项目网页下载了en-ner-person.bin模型。这是我的示例类：

public class OpenNLPExamples {
    public static void main(String args[]) {
        String inputFileName = "en-ner-person.bin";
        String[] inputString = new String[]{"mike", "and", "smiths", "are", "good", "friends."};
        NameFinderME model=null;
        InputStream modelFile=null;
        TokenNameFinderModel modelStream=null;

        try {
            modelFile = new FileInputStream("/Users/saurabh/Desktop/en-ner-person.bin");
            modelStream = new TokenNameFinderModel(modelFile);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                modelFile.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        model = new NameFinderME(modelStream);
        Span spans[] = model.find(inputString);
        System.out.println("span length: " + spans.length);

        for(Span span: spans) {
            System.out.println(span.toString());
        }
    }
}

给定代码的输出为空。我也打印了长度，它是零。我也使用命令行工具，但没有好运。任何人都可以告诉我，我在这里犯了什么错误，或者问题是训练有素的模特吗？