public IHttpActionResult PutwinequalityRed(int id, winequalityRed winequalityRed)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != winequalityRed.ID)
{
return(BadRequest());
}
db.Entry(winequalityRed).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!winequalityRedExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
public IHttpActionResult GetwinequalityRed(int id)
{
winequalityRed winequalityRed = db.winequalityRed.Find(id);
if (winequalityRed == null)
{
return(NotFound());
}
return(Ok(winequalityRed));
}
public IHttpActionResult PostwinequalityRed(winequalityRed winequalityRed)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
db.winequalityRed.Add(winequalityRed);
db.SaveChanges();
return(CreatedAtRoute("DefaultApi", new { id = winequalityRed.ID }, winequalityRed));
}
public IHttpActionResult DeletewinequalityRed(int id)
{
winequalityRed winequalityRed = db.winequalityRed.Find(id);
if (winequalityRed == null)
{
return(NotFound());
}
db.winequalityRed.Remove(winequalityRed);
db.SaveChanges();
return(Ok(winequalityRed));
}
public Normalize(winequalityRed wine, decimal MAXfixedAcidity, decimal MAXvolatileAcidity, decimal MAXcitricAcid, decimal MAXresidualSugar, decimal MAXchlorides, decimal MAXfreeSulfurDioxide, decimal MAXtotalSulfurDioxide, decimal MAXdensity, decimal MAXpH, decimal MAXsulphates, decimal MAXalcohol, decimal MAXquality)
{
fixedAcidity = Convert.ToDecimal(wine.fixed_acidity, CultureInfo.InvariantCulture) / (decimal)MAXfixedAcidity;
volatileAcidity = Convert.ToDecimal(wine.volatile_acidity, CultureInfo.InvariantCulture) / (decimal)MAXvolatileAcidity;
citricAcid = Convert.ToDecimal(wine.citric_acid, CultureInfo.InvariantCulture) / (decimal)MAXcitricAcid;
residualSugar = Convert.ToDecimal(wine.residual_sugar, CultureInfo.InvariantCulture) / (decimal)MAXresidualSugar;
chlorides = Convert.ToDecimal(wine.chlorides, CultureInfo.InvariantCulture) / (decimal)MAXchlorides;
freeSulfurDioxide = Convert.ToDecimal(wine.free_sulfur_dioxide, CultureInfo.InvariantCulture) / (decimal)MAXfreeSulfurDioxide;
totalSulfurDioxide = Convert.ToDecimal(wine.total_sulfur_dioxide, CultureInfo.InvariantCulture) / (decimal)MAXtotalSulfurDioxide;
density = Convert.ToDecimal(wine.density, CultureInfo.InvariantCulture) / (decimal)MAXdensity;
pH = Convert.ToDecimal(wine.pH, CultureInfo.InvariantCulture) / (decimal)MAXpH;
sulphates = Convert.ToDecimal(wine.sulphates, CultureInfo.InvariantCulture) / (decimal)MAXsulphates;
alcohol = Convert.ToDecimal(wine.alcohol, CultureInfo.InvariantCulture) / (decimal)MAXalcohol;
quality = Convert.ToDecimal(wine.quality, CultureInfo.InvariantCulture) / (decimal)MAXquality;
}
public void setResponse(winequalityRed wine)
{
//normalize cus
Normalize nWine = new Normalize(wine, MAXfixedAcidity, MAXvolatileAcidity, MAXcitricAcid, MAXresidualSugar, MAXchlorides, MAXfreeSulfurDioxide, MAXtotalSulfurDioxide, MAXdensity, MAXpH, MAXsulphates, MAXalcohol, MAXquality
);
//calculate all distances
for (int i = 0; i < this.totalTrainset; i++)
{
distances[i] = new Distance();
distances[i].distance = 0;
distances[i].index = i;
//normalize element
Normalize tmp = new Normalize(this.trainset[i], MAXfixedAcidity, MAXvolatileAcidity, MAXcitricAcid, MAXresidualSugar, MAXchlorides, MAXfreeSulfurDioxide, MAXtotalSulfurDioxide, MAXdensity, MAXpH, MAXsulphates, MAXalcohol, MAXquality);
//distance between two fixedAcidity normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.fixedAcidity, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.fixedAcidity, CultureInfo.InvariantCulture));
//distance between two volatileAcidity normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.volatileAcidity, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.volatileAcidity, CultureInfo.InvariantCulture));
//distance between two citricAcid normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.citricAcid, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.citricAcid, CultureInfo.InvariantCulture));
//distance between two residualSugar normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.residualSugar, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.residualSugar, CultureInfo.InvariantCulture));
//distance between two chlorides normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.chlorides, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.chlorides, CultureInfo.InvariantCulture));
//distance between two freeSulfurDioxide normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.freeSulfurDioxide, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.freeSulfurDioxide, CultureInfo.InvariantCulture));
//distance between two totalSulfurDioxide normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.totalSulfurDioxide, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.totalSulfurDioxide, CultureInfo.InvariantCulture));
//distance between two density normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.density, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.density, CultureInfo.InvariantCulture));
//distance between two pH normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.pH, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.pH, CultureInfo.InvariantCulture));
//distance between two sulphates normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.sulphates, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.sulphates, CultureInfo.InvariantCulture));
//distance between two alcohol normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.alcohol, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.alcohol, CultureInfo.InvariantCulture));
//distance between two quality normalized
distances[i].distance = distances[i].distance + getDistance
(Convert.ToDecimal(nWine.quality, CultureInfo.InvariantCulture), Convert.ToDecimal(tmp.quality, CultureInfo.InvariantCulture));
}// end loop
//sort
for (int i = 0; i < totalTrainset - 1; i++)
{
for (int j = i + 1; j < totalTrainset; j++)
{
if (distances[i].distance > distances[j].distance)
{
Distance tmp = distances[i];
distances[i] = distances[j];
distances[j] = tmp;
} //swap
} //end j loop
} //end i loop
//select k nearest neighbor
int yesCount = 0;
int noCount = 0;
decimal sumQuality = 0;
for (int i = 0; i < kNN; i++)
{
winequalityRed tmp = trainset[distances[i].index];
sumQuality += Convert.ToDecimal(tmp.quality, CultureInfo.InvariantCulture);
//if (tmp.getResponse() == 0)
//{
// noCount = noCount + 1;
//}
//else if ( tmp.getResponse() == 1 )
//{
// yesCount = yesCount + 1;
//}
}
//set response value for unknown customer
//if (yesCount > noCount)
//{
// cus.setResponse(1);
//}
//else if (yesCount < noCount)
//{
// cus.setResponse(0);
//}
wine.quality = ((int)Math.Round(sumQuality / (decimal)kNN)).ToString();
}