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What software or online tools can detect the parts of speech in a piece of written text (e.g. to predict if a word is a verb, adjective, etc.)?

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very very useful question. i had never thought of doing that, but now i can't see how i lived without it all this time. – magnetar Dec 25 '11 at 21:14
up vote 6 down vote accepted

I have had good results with the Stanford POS tagger.

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Please include a link =). – dusan Dec 27 '11 at 16:38
It is the first result on Google here! – cburgmer Dec 27 '11 at 18:04
I've added the link to your answer. – dusan Dec 28 '11 at 12:28

There is a web demo system called ICTCLAS (Institute of Computing Technology, Chinese Lexical Analysis System). It was developed by the Institute of Computing Technology, Chinese Academy of Science.

There is also a web demo system from THULAS (Tsinghua University - Lexical Analyzer for Chinese), which was developed by the Nature Language Processing Group, Tsinghua University.

NOTE: I don't know (and I cannot test) whether these site can be accessed freely across the world.
NOTE2: As with any software language tool, take the results with a grain of salt, they aren't perfect.

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Both links do not seem to work. – Village Dec 26 '11 at 6:39
@Village: Oh my god, I'm sorry for that ... – fefe Dec 26 '11 at 8:02
Oh, the first one is working now. Maybe I just need to wait for the other to work. – Village Dec 26 '11 at 8:26
@Village Really ... I cannot access the first now. I'll keep an eye on it. The first one has also a downloadable demo version. – fefe Dec 26 '11 at 8:33

just write the word on google, then type definition after example: run definition Then a big box with the definition will appear, usually the first one shows what part of speech it is

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