我在哪里查看Mahout的小丑示例的结果？

Question

我后运行：象夫org.apache.mahout.cf.taste.example.jester.JesterRecommenderEvaluatorRunner

mahout org.apache.mahout.cf.taste.example.jester.JesterRecommenderEvaluatorRunner 
Running on hadoop, using HADOOP_HOME=/usr 
HADOOP_CONF_DIR=/etc/hadoop/conf 
11/04/23 23:52:18 WARN driver.MahoutDriver: No org.apache.mahout.cf.taste.example.jester.JesterRecommenderEvaluatorRunner.props found on classpath, will use command-line arguments only 
11/04/23 23:52:18 INFO file.FileDataModel: Creating FileDataModel for file src/main/java/org/apache/mahout/cf/taste/example/jester/jester-data-1.csv 
11/04/23 23:52:18 INFO file.FileDataModel: Reading file info... 
11/04/23 23:52:18 INFO file.FileDataModel: Read lines: 7074 
11/04/23 23:52:18 INFO model.GenericDataModel: Processed 7074 users 
11/04/23 23:52:19 INFO eval.AbstractDifferenceRecommenderEvaluator: Beginning evaluation using 0.9 of FileDataModel[dataFile:/usr/local/mahout-distribution-0.4/examples/src/main/java/org/apache/mahout/cf/taste/example/jester/jester-data-1.csv] 
11/04/23 23:52:19 INFO model.GenericDataModel: Processed 2155 users 
11/04/23 23:52:19 INFO slopeone.MemoryDiffStorage: Building average diffs... 
11/04/23 23:52:19 INFO eval.AbstractDifferenceRecommenderEvaluator: Beginning evaluation of 855 users 
11/04/23 23:52:19 INFO eval.AbstractDifferenceRecommenderEvaluator: Starting timing of 855 tasks in 4 threads 
11/04/23 23:52:19 INFO eval.AbstractDifferenceRecommenderEvaluator: Average time per recommendation: 2ms 
11/04/23 23:52:19 INFO eval.AbstractDifferenceRecommenderEvaluator: Approximate memory used: 9MB/56MB 
11/04/23 23:52:19 INFO eval.AbstractDifferenceRecommenderEvaluator: Unable to recommend in 0 cases 
11/04/23 23:52:19 INFO eval.AbstractDifferenceRecommenderEvaluator: Evaluation result: 154472.97849261735 
11/04/23 23:52:19 INFO jester.JesterRecommenderEvaluatorRunner: 154472.97849261735 
11/04/23 23:52:19 INFO driver.MahoutDriver: Program took 740 ms 

不知道从哪里检查结果？

谢谢！

Answer 1

那是的结果。您正在对一个推荐器实施进行评估，其中一个评估推荐器预测评级的效果。它显示了实际评分和预测评分之间的平均差异。

你要找什么结果？

但是这里有些东西看起来很不对：154472.97849261735太大了。当我运行它时，我得到的平均差为3.41（10分）。

我会用latest code from Subversion运行，理想情况下。 0.4是6个月大，虽然我不知道这里有任何错误。你也不需要通过驱动程序来运行它，尽管它起作用。

真的我怀疑你的jester-data-1.csv文件是错误的。最好在user@mahout.apache.org上跟进。