recommender system using apache mahout error

Question

i want to buil a recommender system using apache mahout I created java class but i have a error can some one help me please
the error

run: [INFO ] 2017-03-24 22:11:15,995 -- Creating FileDataModel for file C:\ml-latest-small\dat.csv Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.io.Closeables.closeQuietly(Ljava/io/Closeable;)V at org.apache.mahout.cf.taste.impl.model.file.FileDataModel.(FileDataModel.java:178) at org.apache.mahout.cf.taste.impl.model.file.FileDataModel.(FileDataModel.java:148) at javaapplication15.JavaApplication15.main(JavaApplication15.java:45) Java Result: 1

  public static void main(String[] args) throws IOException, TasteException  {
  DataModel model = new FileDataModel(new File("C:/ml-latest-small/dat.csv"));
  UserSimilarity similarity = new TanimotoCoefficientSimilarity(model);
  UserNeighborhood neighborhood = new ThresholdUserNeighborhood(0.1, similarity, model);
  UserBasedRecommender recommender = new GenericUserBasedRecommender(model, neighborhood, similarity);

  List<RecommendedItem> recommendations = recommender.recommend(2, 3);

for (RecommendedItem recommendation : recommendations) { System.out.println(recommendation);

Welcome, You should probably copy/paste the error message directly, rather than having a seperate screenshot for it. This will make it easier for people to help you. Also, consider giving a some background on the environment you are using to build it. — Soraz

pferrel pferrel · Accepted Answer · 2017-03-27T15:06:51

I should mention that the old Mahout recommenders are being deprecated. The new batch are based on the Spark compute engine rather than the somewhat outdated Hadoop Mapreduce.

The Mahout Model building is here: http://mahout.apache.org/users/algorithms/intro-cooccurrence-spark.html

And a fully functional system called the Universal Recommender is built on Apache PredictionIO is here: http://actionml.com/docs/ur

There are also ALS, matrix factorization based algos in Mahout and Spark MLlib. These and in raw form and need a systems built around them to manage data and serve recs. The Universal Recommender mentioned above is the only one to come relatively turnkey.

Any of these would be a better starting point than code being deprecated.

recommender system using apache mahout error

1 Answers