[OPENNLP-1304] NullPointerException in LemmatizerME

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 1.9.2
• Component/s: Lemmatizer
• Assignee: Unassigned
• Reporter: Markus Jelsma
• Created: 15/May/20 16:02
• Updated: 03/Jun/20 08:16
• Resolved: 02/Jun/20 14:29

Description

In our unit tests we have a basic lemmatizer model for Japanese. The Lemmatizer throws:

java.lang.NullPointerException
        at opennlp.tools.lemmatizer.LemmatizerME.predictSES(LemmatizerME.java:116)
        at opennlp.tools.lemmatizer.LemmatizerME.lemmatize(LemmatizerME.java:91) 

for the following input:

tokens: デン, ・, ヘルデル
tags: PROPN, SYM, PROPN 

I attached the used lemmatizer model in case if needed.