//have formular here
public List <Recommendation_Meta_Item> GetRecommendationR3(Predict_DAO_MCol a)
{
List <Recommendation_Meta_Item> list1 = new List <Recommendation_Meta_Item>();
Recommendation_Meta_Item recommendationMetaItem1 = new Recommendation_Meta_Item();
List <CONF> list2 = new List <CONF>();
List <DIST> list3 = new List <DIST>();
List <string> list4 = new List <string>();
List <string> list5 = new List <string>();
List <string> list6 = new List <string>();
List <U_I_Q> list7 = new List <U_I_Q>();
foreach (string cluster in a.GetListClusterID())
{
List <CONF> confOfCluster = a.GetCONF_OfCluster(cluster);
List <DIST> distOfCluster = a.GetDIST_OfCluster(cluster);
List <string> listUserOfCluster = a.GetListUser_OfCluster(cluster);
List <U_I_Q> traditionalUsersMore = a.GetQuantityTraditionalUsers_More(cluster);
foreach (string user in listUserOfCluster)
{
List <string> notPurchasedOfUser = a.GetListMetaItemNotPurchased_OfUser(user, cluster);
List <string> listMetaItemOfUser = a.GetListMetaItem_OfUser(user);
string str = "";
double num1 = 0.0;
for (int index1 = 0; index1 < notPurchasedOfUser.Count; ++index1)
{
double num2 = 0.0;
double num3 = 0.0;
double num4 = 1.0;
for (int index2 = 0; index2 < listMetaItemOfUser.Count; ++index2)
{
for (int index3 = 0; index3 < confOfCluster.Count; ++index3)
{
if (confOfCluster[index3].MetaItemSource.Equals(listMetaItemOfUser[index2]) && confOfCluster[index3].MetaItemDestination.Equals(notPurchasedOfUser[index1]))
{
num3 = confOfCluster[index3].Confident;
break;
}
}
for (int index3 = 0; index3 < distOfCluster.Count; ++index3)
{
if (distOfCluster[index3].MetaItemDestination.Equals(listMetaItemOfUser[index2]) && distOfCluster[index3].MetaItemDestination.Equals(notPurchasedOfUser[index1]))
{
num4 = distOfCluster[index3].Distance;
break;
}
}
if (num4 != 0.0)
{
num2 += num3 / num4;
}
}
if (num1 < num2 / (double)listMetaItemOfUser.Count)
{
num1 = num2;
str = notPurchasedOfUser[index1];
}
}
if (num1 != 0.0)
{
Recommendation_Meta_Item recommendationMetaItem2 = new Recommendation_Meta_Item();
recommendationMetaItem2.UserID = user;
recommendationMetaItem2.MetaItemID = str;
recommendationMetaItem2.RecommendType = ConstantValues.RC_TYPE_LRS03;
recommendationMetaItem2.Quantity = 0.0;
for (int index = 0; index < traditionalUsersMore.Count; ++index)
{
if (traditionalUsersMore[index].MetaItemID.Equals(str))
{
recommendationMetaItem2.Quantity = traditionalUsersMore[index].QTY;
break;
}
}
recommendationMetaItem2.Score = num1;
list1.Add(recommendationMetaItem2);
}
}
}
return(list1);
}