[mahout]mahout recommender step @ FLASHC

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新版Blog peichengnote

Nov 06 Tue 2012 10:40
[mahout]mahout recommender step

一般而言再使用mahout recommender來說，都有幾個步驟。

建立模型
計算相似度
找k-nearest neighbor
build recommender engine





   public static void main (String args[])throws Exception{  

        DataModel  model =new FileDataModel(new File("data/intro.csv"));  

        UserSimilarity similarity =new PearsonCorrelationSimilarity(model);  

        UserNeighborhood neighborhood =new NearestNUserNeighborhood(2,similarity,model);  

        Recommender recommender= new GenericUserBasedRecommender(model,neighborhood,similarity);  

        List recommendations =recommender.recommend(1, 2);  

        for(RecommendedItem recommendation :recommendations){  

            System.out.println(recommendation);  

        }  

          

    }