Semirings.java: "name clash, have the same erasure" problem

[jiehanzheng]

So I just checked out semafor and tried to build it using Maven:

jiehan@tpx1c /m/d/j/D/w/semafor> git log -1
commit a25f817027463923ea21166b2f43464722273fe8
Author: Sam Thomson <sammthomson@gmail.com>
Date:   Fri Jul 26 16:44:39 2013 -0400

    better workaround for Morpha bug (turns "null" into "")

jiehan@tpx1c /m/d/j/D/w/semafor> mvn package
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Semafor 3.0-alpha-04
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ Semafor ---
[debug] execute contextualize
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 8 resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ Semafor ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 164 source files to /mnt/docs/jiehan/Dropbox/workspace/semafor/target/classes
[INFO] -------------------------------------------------------------
[WARNING] COMPILATION WARNING : 
[INFO] -------------------------------------------------------------
[WARNING] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/XmlUtils.java:[43,41] com.sun.org.apache.xpath.internal.XPathAPI is internal proprietary API and may be removed in a future release
[WARNING] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/XmlUtils.java:[107,45] com.sun.org.apache.xpath.internal.XPathAPI is internal proprietary API and may be removed in a future release
[WARNING] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/XmlUtils.java:[145,45] com.sun.org.apache.xpath.internal.XPathAPI is internal proprietary API and may be removed in a future release
[WARNING] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/XmlUtils.java:[167,45] com.sun.org.apache.xpath.internal.XPathAPI is internal proprietary API and may be removed in a future release
[WARNING] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/Semirings.java: Some input files use unchecked or unsafe operations.
[WARNING] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/Semirings.java: Recompile with -Xlint:unchecked for details.
[INFO] 6 warnings 
[INFO] -------------------------------------------------------------
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/Semirings.java:[196,56] name clash: $(java.util.Collection<java.util.Set<edu.cmu.cs.lti.ark.util.ds.Pair<java.lang.Double,edu.cmu.cs.lti.ark.util.ds.path.Path<T>>>>) and $(java.util.Collection<edu.cmu.cs.lti.ark.util.ds.Pair<java.lang.Double,edu.cmu.cs.lti.ark.util.ds.path.Path<T>>>) have the same erasure
[ERROR] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/Semirings.java:[183,51] name clash: $(java.util.Collection<edu.cmu.cs.lti.ark.util.ds.Pair<java.lang.Double,edu.cmu.cs.lti.ark.util.ds.path.Path<T>>>) in edu.cmu.cs.lti.ark.util.Semirings.MaxPath and $(java.util.Collection<V>) in edu.cmu.cs.lti.ark.util.Semirings.Operation have the same erasure, yet neither overrides the other
[INFO] 2 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.245s
[INFO] Finished at: Mon Jul 29 01:52:47 EDT 2013
[INFO] Final Memory: 16M/205M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.0:compile (default-compile) on project Semafor: Compilation failure: Compilation failure:
[ERROR] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/Semirings.java:[196,56] name clash: $(java.util.Collection<java.util.Set<edu.cmu.cs.lti.ark.util.ds.Pair<java.lang.Double,edu.cmu.cs.lti.ark.util.ds.path.Path<T>>>>) and $(java.util.Collection<edu.cmu.cs.lti.ark.util.ds.Pair<java.lang.Double,edu.cmu.cs.lti.ark.util.ds.path.Path<T>>>) have the same erasure
[ERROR] /mnt/docs/jiehan/Dropbox/workspace/semafor/src/main/java/edu/cmu/cs/lti/ark/util/Semirings.java:[183,51] name clash: $(java.util.Collection<edu.cmu.cs.lti.ark.util.ds.Pair<java.lang.Double,edu.cmu.cs.lti.ark.util.ds.path.Path<T>>>) in edu.cmu.cs.lti.ark.util.Semirings.MaxPath and $(java.util.Collection<V>) in edu.cmu.cs.lti.ark.util.Semirings.Operation have the same erasure, yet neither overrides the other
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

Could this be a JDK incompatibility?

jiehan@tpx1c /m/d/j/D/w/semafor> java -version
java version "1.7.0_40"
OpenJDK Runtime Environment (IcedTea 2.4.1) (ArchLinux build 7.u40_2.4.1-1-x86_64)
OpenJDK 64-Bit Server VM (build 24.0-b50, mixed mode)

I am new to Java, so maybe I am doing something wrong here. If anyone could point out the problem (or share a compiled JAR with me for now first) that would be wonderful! Thanks!

[sammthomson]

I think this is indeed a JDK (or maybe java version) incompatibility.
I use:

java version "1.6.0_51"
Java(TM) SE Runtime Environment (build 1.6.0_51-b11-457-10M4509)
Java HotSpot(TM) 64-Bit Server VM (build 20.51-b01-457, mixed mode)

Looking into it...

In the meantime, here's a jar built from https://github.com/sammthomson/semafor/tree/a25f817027463923ea21166b2f43464722273fe8 :

https://www.dropbox.com/s/73xpcra0w3w0oyt/Semafor-3.0-alpha-04.jar

[jiehanzheng]

@sammthomson Thanks for the JAR file! Let me know if I can help on testing / debugging.

[sammthomson]

fixed in 7c9d2df

[jiehanzheng]

Cool. That was fast. Thank you!

[arisagithub]

when I try to run semafor with this jar file it stops in the Converting postagged input to conll phase.

Environment variables:
SEMAFOR_HOME=/opt/semafor
CLASSPATH=.:/opt/semafor/target/Semafor-3.0-alpha-04.jar
JAVA_HOME_BIN=/usr/lib/jvm/java-6-oracle/bin
MALT_MODEL_DIR=/opt/semafor_malt_model_20121129
TEMP_DIR: /tmp/semafor.oHswfdoPiw
Environment variables:
SEMAFOR_HOME=/opt/semafor
CLASSPATH=.:/opt/semafor/target/Semafor-3.0-alpha-04.jar
JAVA_HOME_BIN=/usr/lib/jvm/java-6-oracle/bin
MALT_MODEL_DIR=/opt/semafor_malt_model_20121129
Environment variables:
SEMAFOR_HOME=/opt/semafor
CLASSPATH=.:/opt/semafor/target/Semafor-3.0-alpha-04.jar
JAVA_HOME_BIN=/usr/lib/jvm/java-6-oracle/bin
MALT_MODEL_DIR=/opt/semafor_malt_model_20121129

---

Tokenizing file: Data/Cause.txt

real 0m0.039s
user 0m0.000s
sys 0m0.000s
Finished tokenization.

---

---

Part-of-speech tagging tokenized data....
/opt/semafor/scripts/jmx /opt/semafor/bin
Read 11692 items from tagger.project/word.voc
Read 45 items from tagger.project/tag.voc
Read 42680 items from tagger.project/tagfeatures.contexts
Read 42680 contexts, 117558 numFeatures from tagger.project/tagfeatures.fmap
Read model tagger.project/model : numPredictions=45, numParams=117558
Read tagdict from tagger.project/tagdict
This is MXPOST (Version 1.0)
Copyright (c) 1997 Adwait Ratnaparkhi
Sentence: 0 Length: 1 Elapsed Time: 0.024 seconds.
Sentence: 1 Length: 0 Elapsed Time: 0.0 seconds.

real 0m1.937s
user 0m0.800s
sys 0m0.048s
/opt/semafor/bin
Finished part-of-speech tagging tokenized data.

---

---

Converting postagged input to conll.
Exception in thread "main" java.lang.IllegalArgumentException:
at edu.cmu.cs.lti.ark.fn.data.prep.formats.SentenceCodec.decode(SentenceCodec.java:83)
at edu.cmu.cs.lti.ark.fn.data.prep.formats.SentenceCodec$SentenceIterator.computeNext(SentenceCodec.java:115)
at edu.cmu.cs.lti.ark.fn.data.prep.formats.SentenceCodec$SentenceIterator.computeNext(SentenceCodec.java:100)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at edu.cmu.cs.lti.ark.fn.data.prep.formats.ConvertFormat.convertStream(ConvertFormat.java:94)
at edu.cmu.cs.lti.ark.fn.data.prep.formats.ConvertFormat.main(ConvertFormat.java:76)
Caused by: java.lang.IllegalArgumentException: PosToken must have 2 "_"-separated fields
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:92)
at edu.cmu.cs.lti.ark.fn.data.prep.formats.Token.fromPosTagged(Token.java:248)
at edu.cmu.cs.lti.ark.fn.data.prep.formats.SentenceCodec$2.decodeToken(SentenceCodec.java:28)
at edu.cmu.cs.lti.ark.fn.data.prep.formats.SentenceCodec.decode(SentenceCodec.java:79)
... 6 more

Any help you can give will be greatly appreciated.

[sammthomson]

This comment is a duplicate of #20, let's discuss over there.