public void UpdateOnlineItemSet(AliRecommend2DataEntities db)
{
OnlineItemSet.Clear();
var onlineData = db.T_Item.Select(d => d.itemid).Distinct();
foreach (var id in onlineData)
{
OnlineItemSet.Add(id);
}
}
public void UpdatePositiveSet(AliRecommend2DataEntities db, DateTime predictDate)
{
DateTime tomorrow = predictDate.AddDays(1);
var data = db.T_UserAction.Where(d => d.actiondate >= predictDate && d.actiondate < tomorrow && d.behaviortype == 4).Select(d => new { d.userid, d.itemid });
PositiveSet.Clear();
foreach (var record in data)
{
PositiveSet.Add(String.Format("{0},{1}", record.userid, record.itemid));
}
}
