/// <summary>
/// 通过推荐列表中的movieId找到相关的电影的全部信息
/// </summary>
/// <param name="result"></param>
/// <returns></returns>
private static ArrayList getRecommendMovie(IronPython.Runtime.List result)
{
ArrayList recommendMovie = new ArrayList();
for (int i = 0; i < result.Count; i++)
{
PythonTuple pySet = result.ElementAt(i) as PythonTuple;
int movieId = (int)pySet.ElementAt(0);
RecommendMovie rdMovie = new RecommendMovie();
rdMovie.Similarity = (double)pySet.ElementAt(1);
try
{
rdMovie.Movie = MovieHelper.GetMovieById(movieId);
}
catch (Exception e)
{
throw (e);
}
recommendMovie.Add(rdMovie);
}
return(recommendMovie);
}
/// <summary>
/// pyItemList为与用户相关联的所有电影ID
/// 找到这些电影与其他电影的相似矩阵，并拼接成一个总体的相似矩阵
/// </summary>
/// <param name="pyItemList"></param>
/// <returns></returns>
private static PythonDictionary getItemSimilarityMatrix(IronPython.Runtime.List pyItemList)
{
PythonDictionary pyDic = new PythonDictionary();
for (int i = 0; i < pyItemList.Count; i++)
{
int itemId = (int)pyItemList.ElementAt(i);
FileStream readStream = new FileStream(srcPath + "item_similar_matrix\\item" + itemId + "_similar_matrix.txt", FileMode.Open, FileAccess.Read, FileShare.Read);
BinaryFormatter formatter = new BinaryFormatter();
IronPython.Runtime.List similarityList = (List)formatter.Deserialize(readStream);
readStream.Close();
pyDic.Add(itemId, similarityList);
}
return(pyDic);
}
/// <summary>
/// 用于测试
/// </summary>
/// <returns></returns>
public static ArrayList test()
{
ArrayList returnList = new ArrayList();
string serverpath = "D:\\projects\\recommandSystem\\UserCFRecommend.py";
ScriptRuntime pyRuntime = Python.CreateRuntime();
ScriptEngine Engine = pyRuntime.GetEngine("python");
ICollection <string> Paths = Engine.GetSearchPaths();
Paths.Add("D:\\Anaconda2-32\\Lib");
Paths.Add("D:\\Anaconda2-32\\DLLs");
Paths.Add("D:\\Anaconda2-32\\Lib\\site-packages");
ScriptScope pyScope = Engine.CreateScope();
//Engine.ImportModule("pandas");
//Engine.ImportModule("math");
//Engine.ImportModule("pickle");
Engine.SetSearchPaths(Paths);
IronPython.Runtime.PythonDictionary pyDic = new IronPython.Runtime.PythonDictionary();
ArrayList A = new ArrayList();
A.Add('a');
A.Add('b');
A.Add('d');
ArrayList B = new ArrayList();
B.Add('a');
B.Add('c');
ArrayList C = new ArrayList();
C.Add('b');
C.Add('e');
ArrayList D = new ArrayList();
D.Add('c');
D.Add('d');
D.Add('e');
pyDic.Add('A', A);
pyDic.Add('B', B);
pyDic.Add('C', C);
pyDic.Add('D', D);
dynamic obj = Engine.ExecuteFile(serverpath, pyScope);
IronPython.Runtime.List result = obj.recommmend_user_cf('A', pyDic, 3);
for (int i = 0; i < result.Count; i++)
{
IronPython.Runtime.PythonTuple pySet = (IronPython.Runtime.PythonTuple)result.ElementAt(i);
Console.WriteLine(pySet.ElementAt(0));
Console.WriteLine(pySet.ElementAt(1));
returnList.Add(pySet.ElementAt(0));
}
Console.WriteLine(result);
return(returnList);
}
