public virtual string GetLibFmFeatureVector(Feedback feedback)
{
string featVector;
if (feedback is Rating)
{
featVector = ((Rating)feedback).Value + " " + GetLibFmFeatureVector(feedback.User.Id, feedback.Item.Id);
}
else
{
featVector = (feedback.FeedbackType == FeedbackType.Positive ? "1 " : "-1 ") + GetLibFmFeatureVector(feedback.User.Id, feedback.Item.Id);
}
_numValues += 2;
var feedbackAttrs = feedback.Attributes.Values.Where(a => FeedbackAttributes.Contains("all") || FeedbackAttributes.Contains(a.Name));
var itemAttrs = feedback.Item.Attributes.Values.Where(a => ItemAttributes.Contains("all") || ItemAttributes.Contains(a.Name));
var userAttrs = feedback.User.Attributes.Values.Where(a => UserAttributes.Contains("all") || UserAttributes.Contains(a.Name));
foreach (var attr in feedbackAttrs.Union(userAttrs).Union(itemAttrs))
{
var feat = TranslateAttribute(attr);
if (feat != null)
{
featVector += string.Format(" {0}:{1}", feat.Item1, feat.Item2);
_numValues++;
}
}
return(featVector);
}
public virtual ItemAttribute GetValue(ItemAttributes list, ItemAttribute ia)
{
ItemAttributes list2 = new ItemAttributes(ia.Cxt, ia.TableName, ia.ItemID, ia.AttributeID);
foreach (ListItem li in Items)
{
bool contains = list2.Contains(ia.AttributeID, li.Value);
if (li.Selected && !contains) // selected but no in db
{
ItemAttribute.AddToList(list, ia.ItemID, ia.AttributeID, li.Value);
}
else if (!li.Selected && contains) // not selected but in db
{
ItemAttribute iax = list2.Get(ia.AttributeID, li.Value);
list.DataTable.ImportRow(iax.DataRow);
DataRow row = list.DataTable.Rows[list.DataTable.Rows.Count - 1];
row.AcceptChanges();
row.Delete(); // mark deleted
}
}
return null;
}
