SEMAFOR v2.1: Error When Loading the wsj.model

[jians...@gmail.com]

I am running the parser on nonserver mode. All resources are downloaded from the links provided here: https://github.com/Noahs-ARK/semafor#downloads

Tokenization and Part of Speech Tagging steps work fine, but met the following error when loading the wsj.model in the Dependency Parsing step. Please help.

Preparing the input for MST Parser...

Exception in thread "main" java.io.InvalidClassException: gnu.trove.TObjectHash; local class incompatible: stream classdesc serialVersionUID = -5747943412751518873, local class serialVersionUID = -3461112548087185871

        at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:560)

        at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1599)

        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1494)

        at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1599)

        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1494)

        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1748)

        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1327)

        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)

        at mst.Alphabet.readObject(Alphabet.java:121)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

        at java.lang.reflect.Method.invoke(Method.java:597)

        at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:969)

        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)

        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1775)

        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1327)

        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)

        at mst.DependencyParser.loadModel(DependencyParser.java:246)

        at mst.DependencyParser.main(DependencyParser.java:470)

Finished dependency parsing.

[Sam Thomson]

Hi Jiansong,

On Wednesday, April 27, 2016 at 7:53:08 AM UTC-7, Jiansong Zhang wrote:

I am running the parser on nonserver mode. All resources are downloaded from the links provided here: https://github.com/Noahs-ARK/semafor#downloads

That's the README for SEMAFOR 3.0, but it looks like you are trying to run SEMAFOR 2.1. Does it work for you if you use the resources linked here: https://github.com/Noahs-ARK/semafor-semantic-parser#downloads ?

Cheers,

-Sam