static void Main(string[] args)
{
string testDbPath = @"c:\Users\unbornchikken\Documents\x\Gender\T_gender_20x24.pdb.pat";
string trainingDbPath = @"c:\Users\unbornchikken\Documents\x\Gender\L_gender_20x24.pdb.pat";
int count = 0;
int freq = 1000;
using (var testFile = File.OpenRead(testDbPath))
using (var trainingFile = File.OpenRead(trainingDbPath))
using (var ctx = new GenderEntities())
{
var list = new LinkedList<Item>();
ctx.DeleteAll();
var testReader = new RawGenderItemReader(testFile, false);
var trainingReader = new RawGenderItemReader(trainingFile, true);
int all = testReader.ItemCount + trainingReader.ItemCount;
foreach (var item in testReader.ReadItems().Concat(trainingReader.ReadItems()))
{
ctx.AddToItems(item);
list.AddLast(item);
if (++count % freq == 0)
{
Console.WriteLine("{0} / {1}", count, all);
ctx.SaveChanges();
Detach(ctx, list);
}
}
ctx.SaveChanges();
}
Console.ReadKey();
}
public override Script this[int index]
{
get
{
Contract.Requires(index >= 0 && index < Count);
if (indexMap.Count != Count) throw new InvalidOperationException("Gender Script provider is not initialized.");
using (var ctx = new GenderEntities())
{
index = indexMap[index];
var item = ctx.Items.Where(i => i.ID == index).First();
return CreateScript(item);
}
}
}
public override IEnumerable<Script> GetScripts(ISet<int> indexes)
{
if (indexMap.Count != Count) throw new InvalidOperationException("Gender Script provider is not initialized.");
int miIdx = 0;
var mappedIndexes = new int[indexes.Count];
foreach (int index in indexes)
{
mappedIndexes[miIdx++] = indexMap[index];
}
using (var ctx = new GenderEntities())
{
var q = ctx.Items.Where(i => mappedIndexes.Contains(i.ID));
foreach (var item in q)
{
yield return CreateScript(item);
}
}
}
public void Update()
{
using (var ctx = new GenderEntities())
{
ObjectQuery<Item> q = null;
if (TestSetType == GenderTestSet.All) q = ctx.Items;
else if (TestSetType == GenderTestSet.Training) q = (ObjectQuery<Item>)ctx.Items.Where(i => i.IsTrainingPattern);
else if (TestSetType == GenderTestSet.Validation) q = (ObjectQuery<Item>)ctx.Items.Where(i => !i.IsTrainingPattern);
var result = q.Execute(MergeOption.NoTracking);
int count = 0;
int passed = 0;
int failed = 0;
foreach (var item in result)
{
bool gender = Computation.ComputeGender(item.Pixels);
if (gender == item.Gender) passed++; else failed++;
count++;
}
TestedItems = count;
PassedItems = passed;
FailedItems = failed;
}
}
private static void Detach(GenderEntities ctx, LinkedList<Item> list)
{
foreach (var item in list) ctx.Items.Detach(item);
list.Clear();
}
public override void Reinitialize()
{
indexMap.Clear();
using (var ctx = new GenderEntities())
{
var q = isTraining ? ctx.Items.Where(i => i.IsTrainingPattern) : ctx.Items.Where(i => !i.IsTrainingPattern);
var dbIdxEnum = q.Select(i => i.ID).AsEnumerable().OrderByRandom().GetEnumerator();
for (int idx = 0; idx < count && dbIdxEnum.MoveNext(); idx++)
{
indexMap.Add(idx, dbIdxEnum.Current);
}
count = indexMap.Count;
}
if (isTraining) Console.WriteLine("Training reinitialized."); else Console.WriteLine("Validation reinitialized.");
}