Example usage for org.apache.mahout.cf.taste.impl.common Cache Cache

Introduction

In this page you can find the example usage for org.apache.mahout.cf.taste.impl.common Cache Cache.

Prototype

public Cache(Retriever<? super K, ? extends V> retriever, int maxEntries) 

Source Link

Document

Creates a new cache based on the given Retriever and with given maximum size.

Usage

From source file:net.ufida.info.mahout.common.CachingRecommender.java

License:Apache License

public CachingRecommender(Recommender recommender) throws TasteException {
    Preconditions.checkArgument(recommender != null, "recommender is null");
    this.recommender = recommender;
    maxHowMany = new int[] { 1 };
    // Use "num users" as an upper limit on cache size. Rough guess.
    int numUsers = recommender.getDataModel().getNumUsers();
    recommendationsRetriever = new RecommendationRetriever();
    recommendationCache = new Cache<Long, Recommendations>(recommendationsRetriever, numUsers);
    estimatedPrefCache = new Cache<LongPair, Float>(new EstimatedPrefRetriever(), numUsers);
    refreshHelper = new RefreshHelper(new Callable<Object>() {
        @Override//from  w ww. ja  va 2  s  . co  m
        public Object call() {
            clear();
            return null;
        }
    });
    refreshHelper.addDependency(recommender);
}

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