lenskit / lenskit-hello Goto Github PK

Dear Sir, I meet some Errors When I import the build.gradle in IDEA or just run it on shell. I google it and don't find relative ways to tackle it so I wish you can help me.

shayueMBP:lenskit-hello-master 2 shayue$ ./gradlew build
:compileJava

FAILURE: Build failed with an exception.

* What went wrong:
Could not resolve all dependencies for configuration ':compileClasspath'.
> Could not resolve org.lenskit:lenskit-all:3.0-M2.
  Required by:
      :lenskit-hello-master 2:unspecified
   > Could not resolve org.lenskit:lenskit-all:3.0-M2.
      > Could not get resource 'https://repo1.maven.org/maven2/org/lenskit/lenskit-all/3.0-M2/lenskit-all-3.0-M2.pom'.
         > Could not GET 'https://repo1.maven.org/maven2/org/lenskit/lenskit-all/3.0-M2/lenskit-all-3.0-M2.pom'.
            > repo1.maven.org:443 failed to respond
   > Could not resolve org.lenskit:lenskit-all:3.0-M2.
      > Could not get resource 'https://oss.sonatype.org/content/repositories/snapshots/org/lenskit/lenskit-all/3.0-M2/lenskit-all-3.0-M2.pom'.
         > Could not GET 'https://oss.sonatype.org/content/repositories/snapshots/org/lenskit/lenskit-all/3.0-M2/lenskit-all-3.0-M2.pom'.
            > oss.sonatype.org:443 failed to respond

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

I'm not sure if this is an issue on my end or with lenskit-hello. I'm taking the Coursera course and thought I might try to ask here.

I'm trying to run lenskit-hello according to the instructions. When I run ./gradlew build, I receive the error

(base) Briennas-MBP:lenskit-hello-master briennakh$ ./gradlew build
:compileJava

FAILURE: Build failed with an exception.

* What went wrong:
Could not resolve all dependencies for configuration ':compileClasspath'.
> Could not resolve org.lenskit:lenskit-all:3.0-M3.
  Required by:
      :lenskit-hello-master 4.50.57 AM:unspecified
   > Could not resolve org.lenskit:lenskit-all:3.0-M3.
      > Could not get resource 'https://repo1.maven.org/maven2/org/lenskit/lenskit-all/3.0-M3/lenskit-all-3.0-M3.pom'.
         > Could not GET 'https://repo1.maven.org/maven2/org/lenskit/lenskit-all/3.0-M3/lenskit-all-3.0-M3.pom'.
            > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
   > Could not resolve org.lenskit:lenskit-all:3.0-M3.
      > Could not get resource 'https://jcenter.bintray.com/org/lenskit/lenskit-all/3.0-M3/lenskit-all-3.0-M3.pom'.
         > Could not GET 'https://jcenter.bintray.com/org/lenskit/lenskit-all/3.0-M3/lenskit-all-3.0-M3.pom'.
            > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 4.009 secs

I am using Java 1.8.0_241 (and only that one is installed) on MacOS Mojave 10.14.6. I've installed the most recent security updates, then restarted my computer. I have attempted this on my regular wifi and on my phone's hotspot.

I followed instructions in the accepted answer here, downloading the security certificates from both https://repo1.maven.org/maven2/org/lenskit/lenskit-all/3.0-M2/lenskit-all-3.0-M2.pom and https://oss.sonatype.org/content/repositories/snapshots/org/lenskit/lenskit-all/3.0-M2/lenskit-all-3.0-M2.pom and adding them to the keystore via the following command (only showing one of two):

keytool -import -alias maven -file /Users/briennakh/Downloads/maven.cer -keystore 
/Library/Java/JavaVirtualMachines/jdk1.8.0_241.jdk/Contents/Home/jre/lib/security/cacerts

Then if I check

keytool -list -keystore /Library/Java/JavaVirtualMachines/jdk1.8.0_241.jdk/Contents/Home/jre/lib/security/cacerts | grep maven

it shows that my certificate has been added, maven, Mar 17, 2020, trustedCertEntry, yet I'm still getting the same error when running ./gradlew build?

I also checked openssl x509 -in /Users/briennakh/Downloads/maven.pem -text to make sure that the certificate looks all right. My JAVA_HOME variable points to /Library/Java/JavaVirtualMachines/jdk1.8.0_241.jdk/Contents/Home. I set it using echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.bash_profile.

This example should really use Logback instead of slf4j-simple.

I wanted to run HelloLenskit.java using the pre-built libraries provided in lenskit-2.2.1.zip. However, I noticed that the classes imported in the Hello file use different package names than the packages in the jar files available in the zip package. also some classes like ResultList, LenskitRecommender , ... I cannot find them in any of the jar files
Is the hello project on github not compatible with the lenskit latest release??
what can I do to run this code successfully??

I finally managed to run the code by changing the packages names and other changes, but there is no outputs(I did not see the expected recommendation for each user )
this list size "List users" is always 0 it doesn't iterate to print the recommendation.
this is the code I run
https://github.com/EsraaSalem/LensKit_Example/blob/master/src/test/java/aa/aa/HelloLenskit.java

nice to meet u sir. Im a student in China.im learing recommender system now,so I download lenskit from here."lenskit-hello-master",that's what I downloaded.I read the readme and I followed the steps hoping to see it working.
i setted environments well,then i entered:"C:\LensKit\lenskit-hello> .\gradlew.bat build",build successful.But when i entered"C:\LensKit\lenskit-hello-master> .\build\install\lenskit-hello-master\bin\lenskit-hello-master.bat 72",some errors occured:
C:\Users\chen\Desktop\lenskit-hello-master>.\build\install\lenskit-hello-master\bin\lenskit-hello-master.bat 72
INFO o.l.c.ConfigurationLoader - loading script from file:/C:/Users/chen/Desktop/lenskit-hello-master/etc/item-item.groovy
INFO o.l.k.i.m.ItemItemBuildContextProvider - constructing build context
INFO o.l.k.i.m.ItemItemModelBuilder - building item-item model for 8915 items
java.lang.RuntimeException: Instantiation error on (Provider(org.lenskit.knn.item.model.ItemItemModelBuilder), MEMOIZE)
java.lang.RuntimeException: Instantiation error on (Provider(org.lenskit.knn.item.model.ItemItemModelBuilder), MEMOIZE)
at org.lenskit.inject.NodeInstantiator.apply(NodeInstantiator.java:57)
at org.lenskit.inject.NodeInstantiator$DefaultImpl.apply(NodeInstantiator.java:67)
at org.lenskit.inject.InstantiatingNodeProcessor.processNode(InstantiatingNodeProcessor.java:54)
at org.lenskit.inject.NodeProcessors.processNodes(NodeProcessors.java:89)
at org.lenskit.inject.RecommenderInstantiator.replaceShareableNodes(RecommenderInstantiator.java:118)
at org.lenskit.inject.RecommenderInstantiator.instantiate(RecommenderInstantiator.java:87)
at org.lenskit.LenskitRecommenderEngineBuilder.build(LenskitRecommenderEngineBuilder.java:122)
at org.lenskit.LenskitRecommenderEngine.build(LenskitRecommenderEngine.java:257)
at org.grouplens.lenskit.hello.HelloLenskit.run(HelloLenskit.java:108)
at org.grouplens.lenskit.hello.HelloLenskit.main(HelloLenskit.java:59)
Caused by: org.grouplens.grapht.ConstructionException: Error invoking provider org.grouplens.grapht.reflect.internal.ClassInstantiator@1a14a4
at org.grouplens.grapht.Instantiators$ProviderInstantiator.instantiate(Instantiators.java:155)
at org.grouplens.grapht.Instantiators$MemoizingInstantiator.instantiate(Instantiators.java:184)
at org.lenskit.inject.NodeInstantiator$DefaultImpl.instantiate(NodeInstantiator.java:76)
at org.lenskit.inject.NodeInstantiator.apply(NodeInstantiator.java:55)
... 9 more
Caused by: java.lang.OutOfMemoryError: Java heap space
at it.unimi.dsi.fastutil.doubles.DoubleArrays.grow(DoubleArrays.java:165)
at it.unimi.dsi.fastutil.doubles.DoubleArrayList.grow(DoubleArrayList.java:192)
at it.unimi.dsi.fastutil.doubles.DoubleArrayList.add(DoubleArrayList.java:206)
at org.grouplens.lenskit.scored.ScoredIdListBuilder.add(ScoredIdListBuilder.java:209)
at org.grouplens.lenskit.util.UnlimitedScoredItemAccumulator.put(UnlimitedScoredItemAccumulator.java:57)
at org.lenskit.knn.item.model.ItemItemModelBuilder.get(ItemItemModelBuilder.java:112)
at org.lenskit.knn.item.model.ItemItemModelBuilder.get(ItemItemModelBuilder.java:50)
at org.grouplens.grapht.Instantiators$ProviderInstantiator.instantiate(Instantiators.java:153)
... 12 more

Can you give me some advices please?Thank you very much.

I tried to run the program like the README file says, using /bin/sh, but got a syntax error. It seems to work after I tried bash instead...

nlw@kvelertak:~/src/lenskit-hello$ /bin/sh build/install/lenskit-hello/bin/lenskit-hello 72
build/install/lenskit-hello/bin/lenskit-hello: 158: build/install/lenskit-hello/bin/lenskit-hello: Syntax error: "(" unexpected
nlw@kvelertak:~/src/lenskit-hello$ bash build/install/lenskit-hello/bin/lenskit-hello 72
INFO  o.l.d.d.f.TextEntitySource - loading text file source ratings to read from file:/home/nlw/src/lenskit-hello/data/ratings.csv
INFO  o.l.d.d.f.TextEntitySource - loading text file source items to read from file:/home/nlw/src/lenskit-hello/data/movies.csv
INFO  o.l.d.d.f.TextEntitySource - loading text file source tags to read from file:/home/nlw/src/lenskit-hello/data/tags.csv
(...)