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I'm trying to use your files. But I'm receiving these errors:

Error using PosTaggerM (line 40)
Java exception occurred:
edu.stanford.nlp.io.RuntimeIOException: Unrecoverable error while loading a tagger model

	at edu.stanford.nlp.tagger.maxent.MaxentTagger.readModelAndInit(MaxentTagger.java:758)

	at edu.stanford.nlp.tagger.maxent.MaxentTagger.<init>(MaxentTagger.java:289)

	at edu.stanford.nlp.tagger.maxent.MaxentTagger.<init>(MaxentTagger.java:253)

Caused by: java.io.IOException: Unable to resolve "./english-left3words-distsim.tagger" as either class path,
filename or URL

	at edu.stanford.nlp.io.IOUtils.getInputStreamFromURLOrClasspathOrFileSystem(IOUtils.java:434)

	at edu.stanford.nlp.tagger.maxent.MaxentTagger.readModelAndInit(MaxentTagger.java:753)

	... 2 more

What I did: I added the folder of the file english-left3words-distsim.tagger in the path and added stanford-postagger.jar to the classpath as you suggested here. Then I used this code for testing:

sample_sentence = 'This is a very small sample sentence for test purpose - Chomsky.';
PosTaggerM(sample_sentence)

I have tried on both MATLAB R2014a and R2016a 64bit Win 10
I have tried with both 3.3.1 and 3.4.1 of the tagger and also tried some other versions.
Tried with latest java, and also with Version 8 Update 73 (build 1.8.0_73-b02) and also with Java 1.7.0_60-b19. .

How to solve this issue?

OK, here's my problem.
I want to POS tagg a text file with product reviews, in order to proceed with sentiment analysis on that opinions.
I downloaded the stanford parser 31/10/2016 and copied the file named english-left3words-distsim.tagger in Matlab's current working path.
I have installed Java in my computer.
I also added stanford-postagger.jar to the classpath using Matlab's command:
javaaddpath(./stanford-postagger-2016-10-31/stanford-postagger.jar')
Last, i call the PosTaggerM(str) function to POS tag the string contained in str variable.
An error about MaxentTagger( ) occurs on line 40 of the PosTaggerM() function which is:
tagger = MaxentTagger('./english-left3words-distsim.tagger');
Having in mind that i don't know Java, so i cannot debug the MaxentTagger method, can i be advised of what to do?
PS: I saw that this POStagging is compatible with Matlab 2014b and i'm working with Matlab 2010b, but i understand that it has to do with the java part, not the Matlab part of the program. Any help or modifications would be very much appreciated.

I'm using your code. After spending some time to find the latest tagger that works with your code, I have the following conclusion to make:

The latest versions of MATLAB, Java and tagger as by now (20th July, 2017) that I have tried and found your code working are: MATLAB R2017a, Java 8 Update 141, Stanford-Postagger 3.4.1.

I am attaching a list of my details for future reference.

Stanford-Postagger

I have found your code working with:

• 3.3.0
• 3.3.1
• 3.4.1

The following versions don't work:

• 3.5.0
• 3.5.1
• 3.5.2
• 3.7.0
• 3.8.0

All above non-working versions give this error:

Arguments to IMPORT must either end with ".*" or else specify a fully qualified
class name: "edu.stanford.nlp.tagger.maxent.MaxentTagger" fails this test.

I didn't dig into this but there may be a solution to above problem as well. What I have observed is that the version 3.5.0 and later versions which use Java 8 are not compatible with the code (as it is). The same issue was pointed out in this thread with the version 3.7.0.

Java version

It have tried it on the latest version as by now (20th July, 2017) i.e. Java 8 Update 141 (1.8.0_141-b15) (Release date July 18, 2017) and found it working.

MATLAB version

It have tried it on the following versions:
R2016a (Windows)
R2017a (Windows)
Both work.

Hi,

I am trying to use your function for importing Stanford NLP Speech Tager. The error I get is on the import of the particular file:

Arguments to IMPORT must either end with ".*" or else specify a fully qualified class name:
"edu.stanford.nlp.tagger.maxent.MaxentTagger" fails this test.

What am I using?:

• MATLAB 2016b (Running on a mac)
• java version "1.8.0_51"
• stanford-postagger-full-2016-10-31

What did I do? :

• Added the stanford-postagger.jar using javaaddpath& verified if it was added using javaclasspath. It's added in a dynamic java path
• Place PosTaggerM.m in a directory and nglish-left3words-distsim.tagger in the same directory

Is there something I am missing in this?