public Hybrid(List <VideoWeight> contentList)
{
HybridList = new List <VideoWeight>();
Popularity pop = new Popularity();
this.HybridList = pop.GenerateHybridContentPopularityMetric(contentList);
}
public Form1()
{
InitializeComponent();
UserIdList = new List <int>();
List <KeyValuePair <SqlParameter, string> > UserParameters = new List <KeyValuePair <SqlParameter, string> >();
//UserParameters.Add(GetUserIDKVP());
DataTable UserDt = SQL.GetData("SELECT * FROM [dbo].[User] ", UserParameters);
foreach (DataRow dr in UserDt.Rows)
{
int x = 0;
if (Int32.TryParse(dr["UserId"].ToString(), out x))
{
UserIdList.Add(x);
}
}
double ContentTotal = 0; double PopularityTotal = 0; double HybridTotal = 0; int UserTotal = 0;
foreach (int user in UserIdList)
{
DataTable dt = SQL.GetData(String.Concat("SELECT uv.VideoId, v.VideoName FROM UserVideo AS uv JOIN Video AS v ON uv.VideoId = v.VideoId Where UserId = ", user, "AND ViewDate <= Convert(date, '", this.HalfDate, "')"), new List <KeyValuePair <SqlParameter, string> >());
DataTable unwatched = SQL.GetData(String.Concat("SELECT VideoId, VideoName, AverageWatchTime, PercentageLiked FROM Video WHERE VideoId Not In ( SELECT VideoId FROM UserVideo Where UserId = ", user, ")"), new List <KeyValuePair <SqlParameter, string> >());
if (dt.Rows.Count > 0)
{
content = new Content(user, HalfDate, dt, unwatched);
ContentTotal += TestAccuracy(this.AccStartDate, user, content.GetRecommendedVideos(10));
pop = new Popularity(unwatched);
PopularityTotal += TestAccuracy(this.AccStartDate, user, pop.GetRecommendedVideos(10));
hybrid = new Hybrid(content.GetRecommendedVideos());
HybridTotal += TestAccuracy(this.AccStartDate, user, hybrid.GetRecommendedVideos(10));
UserTotal += 1;
}
}
ContentTotal = ContentTotal / UserTotal;
PopularityTotal = PopularityTotal / UserTotal;
HybridTotal = HybridTotal / UserTotal;
lblContentValue.Text = String.Concat(ContentTotal, "%");
lblPoplarityValue.Text = String.Concat(PopularityTotal, "%");
lblHybridValue.Text = String.Concat(HybridTotal, "%");
}
public Form1()
{
InitializeComponent();
UserIdList = new List <int>();
PreRecVideos = new List <int>();
List <KeyValuePair <SqlParameter, string> > UserParameters = new List <KeyValuePair <SqlParameter, string> >();
//UserParameters.Add(GetUserIDKVP());
DataTable UserDt = SQL.GetData("SELECT * FROM [dbo].[User] ", UserParameters);
foreach (DataRow dr in UserDt.Rows)
{
int x = 0;
if (Int32.TryParse(dr["UserId"].ToString(), out x))
{
UserIdList.Add(x);
}
}
double ContentTotal = 0; double PopularityTotal = 0; double HybridTotal = 0; int UserTotal = 0;
foreach (int user in UserIdList)
{
DataTable dt = SQL.GetData(String.Concat("SELECT TOP 25 uv.VideoId, v.VideoName, uv.ViewDate FROM UserVideo AS uv JOIN Video AS v ON uv.VideoId = v.VideoId Where UserId = ", user, "Order By ViewDate ASC"), new List <KeyValuePair <SqlParameter, string> >());
if (dt.Rows.Count > 0 && user == 2)
{
StringBuilder sb = new StringBuilder("VideoId NOT IN (");
foreach (DataRow dr in dt.Rows)
{
int vid = 0;
Int32.TryParse(dr["VideoId"].ToString(), out vid);
PreRecVideos.Add(vid);
sb.Append(vid);
sb.Append(",");
}
sb.Length--;
sb.Append(")");
int recNumber = 10;
object md = dt.Compute("MAX(ViewDate)", null);
DataTable unwatched = SQL.GetData(String.Concat("SELECT VideoId, VideoName, AverageWatchTime, PercentageLiked FROM Video WHERE ", sb.ToString()), new List <KeyValuePair <SqlParameter, string> >());
if (dt.Rows.Count > 0 && user == 2)
{
content = new Content(user, HalfDate, dt, unwatched);
UpdateLabelRec(lblContentRec, content.GetRecommendedVideos(recNumber));
ContentTotal += TestAccuracy(this.AccStartDate, user, content.GetRecommendedVideos(recNumber), sb.ToString(), md);
pop = new Popularity(unwatched);
UpdateLabelRec(lblPopularityRec, pop.GetRecommendedVideos(recNumber));
PopularityTotal += TestAccuracy(this.AccStartDate, user, pop.GetRecommendedVideos(recNumber), sb.ToString(), md);
hybrid = new Hybrid(content.GetRecommendedVideos());
UpdateLabelRec(lblHybridRec, hybrid.GetRecommendedVideos(recNumber));
HybridTotal += TestAccuracy(this.AccStartDate, user, hybrid.GetRecommendedVideos(recNumber), sb.ToString(), md);
UserTotal += 1;
}
}
}
//ContentTotal = ContentTotal / UserTotal;
//PopularityTotal = PopularityTotal / UserTotal;
//HybridTotal = HybridTotal / UserTotal;
lblContentValue.Text = String.Concat(ContentTotal, "%");
lblPoplarityValue.Text = String.Concat(PopularityTotal, "%");
lblHybridValue.Text = String.Concat(HybridTotal, "%");
}
