//**************************************************************************************
/// <summary>
/// Returns classifier prediction based on provided parameters.
/// </summary>
/// <param name="iParameters"></param>
public Prediction Predict(float[] iParameters)
{
if (iParameters is null)
{
throw new ArgumentNullException(nameof(iParameters));
}
WaitTillModelReady();
// Create instances object
var instances = new weka.core.Instances("Test", Attributes, 1);
instances.setClassIndex(instances.numAttributes() - 1);
// Create single instance
var instance = new weka.core.DenseInstance(instances.numAttributes() - 1);
instance.setDataset(instances);
// Fill instance with data
for (int i = 0; i < iParameters.Length; i++)
{
instance.setValue(i, iParameters[i]);
}
// Get prediction
double prediction = Model.classifyInstance(instance);
// Convert prediction to decision
return((Prediction)Enum.Parse(typeof(Prediction), instances.classAttribute().value((int)prediction)));
}
//returns the classification result as the lane number
private double getAlgorithmResult(float[] attributes)
{
//sets up the current environment as a new state 'Instance'
//labels as the same type as the training data, sets up the attribute values
//leaves the classifier blank
weka.core.Instance currentState = new weka.core.DenseInstance(6);
currentState.setDataset(insts);
currentState.setValue(0, (attributes[3] + 2));
currentState.setValue(1, attributes[0]);
currentState.setValue(2, attributes[1]);
currentState.setValue(3, attributes[2]);
currentState.setValue(4, totalTime);
currentState.setClassMissing();
//Debug.Log (currentState.ToString());
double result = j48Classifier.classifyInstance(currentState);
return(result);
}
public static string IncrementTest(weka.core.Instances allInstancesWithDate,
Func<weka.classifiers.Classifier> clsCreator, string removeAttributes, string resultFile, int step)
{
//if (!(TestParameters2.UsePartialHpDataM1 || TestParameters2.UsePartialHpData))
//{
// HpData.Instance.Clear();
//}
int trainMinutes = TestParameters2.MinTrainPeriod * WekaUtils.GetMinuteofPeriod(TestParameters2.CandidateParameter.MainPeriod);
string ret = string.Empty;
string sampleFile = null; // resultFile.Replace("Increment", "sample");
bool useInstanceWeight = false;
bool enablePerHour = false;
bool enableDiffClass = false;
int sameClassCount = -1;// TestParameters2.MaxTrainSize / 3; // allInstances.numClasses();
bool enableDiffHpTime = false;
bool enableRemoveLittle = false;
bool enableRemoveLargeThanMid = true;
bool enableFilter = false;
if (!TestParameters2.RealTimeMode && File.Exists(resultFile))
File.Delete(resultFile);
weka.core.Instances allInstances;
var filter = new weka.filters.MultiFilter();
//filter.setOptions(weka.core.Utils.splitOptions("-F \"weka.filters.unsupervised.attribute.Remove -R 1,4\" -F \"weka.filters.unsupervised.attribute.Discretize -B 10 -M -1.0 -R first-last\""));
filter.setOptions(weka.core.Utils.splitOptions(string.Format("-F \"weka.filters.unsupervised.attribute.Remove -R {0} \"", removeAttributes)));
filter.setInputFormat(allInstancesWithDate);
allInstances = weka.filters.Filter.useFilter(allInstancesWithDate, filter);
long[] jHpTimes = new long[allInstancesWithDate.numInstances()];
DateTime[] jDates = new DateTime[allInstancesWithDate.numInstances()];
DateTime[] jHpDates = new DateTime[allInstancesWithDate.numInstances()];
int[] jHps = new int[allInstancesWithDate.numInstances()];
for (int j = 0; j < jDates.Length; ++j)
{
jDates[j] = WekaUtils.GetDateValueFromInstances(allInstancesWithDate, 0, j);
jHpTimes[j] = WekaUtils.GetTimeValueFromInstances(allInstancesWithDate, 1, j);
jHpDates[j] = WekaUtils.GetDateFromTime(jHpTimes[j]);
jHps[j] = (int)allInstances.instance(j).classValue();
}
#region "action"
Func<Tuple<int, int>, Tuple<weka.core.Instances, weka.core.Instances, long, int, int>> action = (tuple) =>
{
var ai = tuple.Item1;
DateTime nowDate = WekaUtils.GetDateValueFromInstances(allInstancesWithDate, 0, ai);
if (nowDate < TestParameters2.TrainStartTime || nowDate > TestParameters2.TrainEndTime)
return null;
DateTime nowHpDate = WekaUtils.GetDateValueFromInstances(allInstancesWithDate, 1, ai);
double nowClass = allInstancesWithDate.instance(ai).classValue();
double preJClass = -1;
List<weka.core.Instance> listTrainInstances = new List<weka.core.Instance>(ai / 2);
List<weka.core.Instance> listTrainInstancesWithDate = new List<weka.core.Instance>(ai / 2);
int[] counts = new int[allInstancesWithDate.numClasses()];
long maxjHpTime = -1;
int maxjHpTimeHp = 2;
int maxjHpTimeCount = 0;
bool enoughTrainMinutes = false;
DateTime firstDate = nowDate.AddMinutes(-trainMinutes);
int classIdxWithDate = allInstancesWithDate.classIndex();
int classIdx = allInstances.classIndex();
for (int j = ai - 1; j >= 0; --j)
{
long jHpTime = jHpTimes[j]; // WekaUtils.GetTimeValueFromInstances(allInstancesWithDate, 1, j);
DateTime jHpDate = jHpDates[j];// WekaUtils.GetDateFromTime(jHpTime);
DateTime jDate = jDates[j];// WekaUtils.GetDateValueFromInstances(allInstancesWithDate, 0, j);
int jHp = jHps[j]; // (int)allInstancesWithDate.instance(j).value(classIdxWithDate);
if (enablePerHour)
{
if (nowDate.Hour != jDate.Hour)
continue;
}
weka.core.Instance instInsert = null;
weka.core.Instance instInsertWithDate = null;
if (jHpDate <= nowDate)
{
if (jHpTime > maxjHpTime)
{
maxjHpTime = jHpTime;
maxjHpTimeHp = jHp;
maxjHpTimeCount = 1;
}
else if (jHpTime == maxjHpTime)
{
maxjHpTimeCount++;
}
instInsert = new weka.core.DenseInstance(allInstances.instance(j));
//instInsert.setDataset(trainInstances);
instInsertWithDate = new weka.core.DenseInstance(allInstancesWithDate.instance(j));
//instInsertWithDate.setDataset(trainInstancesWithDate);
}
else
{
if (TestParameters2.UsePartialHpDataM1 || TestParameters2.UsePartialHpData)
{
Tuple<int, long> hp = null;
if (TestParameters2.UsePartialHpDataM1)
{
hp = HpData.Instance.GetHpSumByM1(TestParameters2.CandidateParameter.MainSymbol, TestParameters2.CandidateParameter.MainPeriod,
WekaUtils.GetTimeFromDate(nowDate), WekaUtils.GetTimeFromDate(jDate));
if (hp.Item2 == 0)
hp = null;
}
else if (TestParameters2.UsePartialHpData)
{
var hps = HpData.Instance.GetHpSum(TestParameters2.CandidateParameter.MainSymbol, TestParameters2.CandidateParameter.MainPeriod,
WekaUtils.GetTimeFromDate(nowDate), WekaUtils.GetTimeFromDate(jDate));
if (hps.ContainsKey(jDate))
{
hp = hps[jDate];
}
}
if (hp != null)
{
if (WekaUtils.GetDateFromTime(hp.Item2) > nowDate)
{
throw new AssertException("hpdate should less than now");
}
jHp = hp.Item1;
jHpTime = hp.Item2;
if (jHpTime > maxjHpTime)
{
maxjHpTime = jHpTime;
maxjHpTimeHp = jHp;
maxjHpTimeCount = 0;
}
else if (jHpTime == maxjHpTime)
{
maxjHpTimeCount++;
}
instInsert = new weka.core.DenseInstance(allInstances.instance(j));
//instInsert.setDataset(trainInstances);
//instInsert.setClassValue(jHp);
instInsert.setValue(classIdx, jHp);
instInsertWithDate = new weka.core.DenseInstance(allInstancesWithDate.instance(j));
//instInsertWithDate.setDataset(trainInstancesWithDate);
//instInsertWithDate.setClassValue(jHp);
instInsertWithDate.setValue(classIdxWithDate, jHp);
instInsertWithDate.setValue(1, jHpTime * 1000);
}
}
}
if (instInsert == null)
continue;
double jClass = jHp;
if (enableDiffClass && jClass == preJClass)
continue;
if (sameClassCount > 0)
{
if (counts[(int)jClass] >= sameClassCount)
continue;
counts[(int)jClass]++;
}
if (enableFilter && j > 0 && Filter(jDate, allInstancesWithDate.instance(j), allInstancesWithDate.instance(j - 1)))
continue;
if (useInstanceWeight)
instInsert.setWeight((nowDate - jDate).TotalMinutes);
listTrainInstances.Add(instInsert);
listTrainInstancesWithDate.Add(instInsertWithDate);
preJClass = jClass;
if (jDate <= firstDate)
{
enoughTrainMinutes = true;
break;
}
}
//weka.core.Instances trainInstances2 = new weka.core.Instances(allInstancesNoDate, 0);
//for (int x = trainInstances.numInstances() - 1; x >= 0; --x)
//{
// weka.core.Instance inst = new weka.core.DenseInstance(trainInstances.instance(x));
// trainInstances2.add(inst);
//}
//WekaUtils.SaveInstances(trainInstances2, "d:\\a.arff");
//if (trainInstances.numInstances() >= trainLength)
// break;
if (!enoughTrainMinutes)
{
Console.WriteLine(string.Format("{0}, not enough trainMinutes",
nowDate.ToString(Parameters.DateTimeFormat)));
return null;
}
if (listTrainInstances.Count < TestParameters2.MinTrainSize)
{
Console.WriteLine(string.Format("{0}, numInstances {1} < minTrainSize {2}",
nowDate.ToString(Parameters.DateTimeFormat), listTrainInstances.Count, TestParameters2.MinTrainSize));
return null;
}
//else if (listTrainInstances.Count == 1)
//{
// lock (WekaUtils.Instance)
// {
// WekaUtils.Instance.WriteLog("trainInstances.numInstances() == 1, nowDate = " + nowDate.ToString());
// if (!System.IO.File.Exists("d:\\a.arff"))
// {
// WekaUtils.SaveInstances(trainInstances, "d:\\a.arff");
// }
// }
//}
weka.core.Instances trainInstances = new weka.core.Instances(allInstances, listTrainInstances.Count);
weka.core.Instances trainInstancesWithDate = new weka.core.Instances(allInstancesWithDate, listTrainInstancesWithDate.Count);
WekaUtils.AddInstanceQuickly(trainInstances, listTrainInstances);
WekaUtils.AddInstanceQuickly(trainInstancesWithDate, listTrainInstancesWithDate);
if (enableRemoveLittle)
{
double preClass = 2;
for (int ii = 0; ii < trainInstances.numInstances(); ++ii)
{
var iiClass = trainInstances.instance(ii).classValue();
if (iiClass == 2)
continue;
int jj = ii + 1;
while (jj < trainInstances.numInstances())
{
if (trainInstances.instance(jj).classValue() == iiClass)
jj++;
else
break;
}
int count = jj - ii;
if (count < 5)
{
for (jj = 0; jj < count; ++jj)
{
trainInstances.instance(ii + jj).setClassValue(preClass);
}
}
else
{
preClass = iiClass;
ii += count;
}
}
}
if (enableDiffHpTime)
{
Dictionary<long, int> jDictHpTimes = new Dictionary<long, int>();
int n = trainInstances.numInstances();
List<weka.core.Instance> list1 = new List<weka.core.Instance>(n);
List<weka.core.Instance> list2 = new List<weka.core.Instance>(n);
//java.util.LinkedList deleteList = new java.util.LinkedList();
for (int j = 0; j < n; ++j)
{
long jHpTime = WekaUtils.GetTimeValueFromInstances(trainInstancesWithDate, 1, j);
if (jDictHpTimes.ContainsKey(jHpTime))
{
continue;
}
else
{
jDictHpTimes[jHpTime] = list1.Count;
list1.Add(trainInstances.instance(j));
list2.Add(trainInstancesWithDate.instance(j));
}
}
weka.core.Instances newTrainInstances = new weka.core.Instances(trainInstances, list1.Count);
weka.core.Instances newTrainInstancesWithDate = new weka.core.Instances(trainInstancesWithDate, list2.Count);
WekaUtils.AddInstanceQuickly(newTrainInstances, list1);
WekaUtils.AddInstanceQuickly(newTrainInstancesWithDate, list2);
trainInstances = newTrainInstances;
trainInstancesWithDate = newTrainInstancesWithDate;
}
if (enableRemoveLargeThanMid)
{
int n = trainInstances.numInstances();
long[] lastTimes = new long[n];
for (int j = 0; j < n; ++j)
{
long openTime = WekaUtils.GetTimeValueFromInstances(trainInstancesWithDate, 0, j);
long closeTime = WekaUtils.GetTimeValueFromInstances(trainInstancesWithDate, 1, j);
lastTimes[j] = (long)(closeTime - openTime);
}
Array.Sort(lastTimes);
long midLastTime = lastTimes[lastTimes.Count() / 2];
List<weka.core.Instance> list1 = new List<weka.core.Instance>(n);
List<weka.core.Instance> list2 = new List<weka.core.Instance>(n);
//java.util.LinkedList deleteList = new java.util.LinkedList();
for (int j = 0; j < n; ++j)
{
if (lastTimes[j] > midLastTime)
{
//deleteList.add(trainInstances.instance(j));
}
else
{
list1.Add(trainInstances.instance(j));
list2.Add(trainInstancesWithDate.instance(j));
}
}
weka.core.Instances newTrainInstances = new weka.core.Instances(trainInstances, list1.Count);
weka.core.Instances newTrainInstancesWithDate = new weka.core.Instances(trainInstancesWithDate, list2.Count);
WekaUtils.AddInstanceQuickly(newTrainInstances, list1);
WekaUtils.AddInstanceQuickly(newTrainInstancesWithDate, list2);
trainInstances = newTrainInstances;
trainInstancesWithDate = newTrainInstancesWithDate;
//trainInstances.removeAll(deleteList);
}
if (!string.IsNullOrEmpty(sampleFile))
{
lock (sampleFile)
{
if (!System.IO.File.Exists(sampleFile))
{
WekaUtils.SaveInstances(trainInstancesWithDate, sampleFile);
}
}
}
//using (StreamWriter sw = new StreamWriter("d:\\p.txt", true))
//{
// sw.Write("{0},{1},", nowDate.ToString(Parameters.DateTimeFormat), nowHpDate.ToString(Parameters.DateTimeFormat));
//}
return new Tuple<weka.core.Instances, weka.core.Instances, long, int, int>(trainInstances, trainInstancesWithDate, maxjHpTime, maxjHpTimeHp, maxjHpTimeCount);
};
#endregion
//allInstancesNoDate = allInstances;
if (!TestParameters2.RealTimeMode)
{
int tpb = 0, fpb = 0, tps = 0, fps = 0;
int db = 0, ds = 0, dn = 0;
int parallelStep = 1;
if (TestParameters.EnableMultiThread)
{
parallelStep = 100;
}
int startIdx = TestParameters2.MinTrainPeriod * 2 / 3;
for (int i0 = startIdx; i0 < allInstancesWithDate.numInstances() - step; i0 += step * parallelStep)
{
List<Tuple<int, int>> toTest = new List<Tuple<int, int>>();
for (int i = i0; i < Math.Min(i0 + step * parallelStep, allInstancesWithDate.numInstances() - step); i += step)
{
toTest.Add(new Tuple<int, int>(i, toTest.Count));
}
var toRet0 = new Tuple<weka.core.Instances, weka.core.Instances, long, int, int>[toTest.Count];
if (TestParameters.EnableMultiThread)
{
Parallel.ForEach(toTest, (tuple) =>
{
int i = tuple.Item1 - i0;
toRet0[i] = action(tuple);
});
}
else
{
for (int i = 0; i < toTest.Count; ++i)
{
var r = action(toTest[i]);
toRet0[i] = r;
}
}
object[, ,] toRet = new object[toTest.Count, step, 9];
bool[] toRet1 = new bool[toTest.Count];
for (int i = 0; i < toTest.Count; ++i)
{
for (int j = 0; j < step; ++j)
toRet[i, j, 0] = 2;
if (toRet0[i] != null)
{
var maxjHpTime = toRet0[i].Item3;
var maxjHpTimeHp = toRet0[i].Item4;
var maxjHpTimeCount = toRet0[i].Item5;
toRet1[i] = IncrementTestTrainCheck(resultFile, maxjHpTime, maxjHpTimeHp, maxjHpTimeCount, toTest[i]);
}
}
if (TestParameters.EnableMultiThread)
{
Parallel.ForEach(toTest, (tuple) =>
{
int i = tuple.Item1 - i0;
if (toRet0[i] != null)
{
var trainInstances = toRet0[i].Item1;
var trainInstancesWithDate = toRet0[i].Item2;
var maxjHpTime = toRet0[i].Item3;
var maxjHpTimeHp = toRet0[i].Item4;
var r = IncrementTestTrain(toRet1[i], clsCreator, resultFile, step, trainInstances, trainInstancesWithDate, allInstances, allInstancesWithDate,
maxjHpTime, maxjHpTimeHp, toTest[i]);
if (r != null)
{
for (int j = 0; j < toRet.GetLength(1); ++j)
for (int k = 0; k < toRet.GetLength(2); ++k)
toRet[i, j, k] = r[j, k];
}
}
});
}
else
{
for (int i = 0; i < toTest.Count; ++i)
{
if (toRet0[i] != null)
{
var trainInstances = toRet0[i].Item1;
var trainInstancesWithDate = toRet0[i].Item2;
var maxjHpTime = toRet0[i].Item3;
var maxjHpTimeHp = toRet0[i].Item4;
var r = IncrementTestTrain(toRet1[i], clsCreator, resultFile, step, trainInstances, trainInstancesWithDate, allInstances, allInstancesWithDate,
maxjHpTime, maxjHpTimeHp, toTest[i]);
if (r != null)
{
for (int j = 0; j < toRet.GetLength(1); ++j)
for (int k = 0; k < toRet.GetLength(2); ++k)
toRet[i, j, k] = r[j, k];
}
}
}
}
for (int i = 0; i < toTest.Count; ++i)
{
//action(toTest[i]);
for (int j = 0; j < step; ++j)
{
int d = (int)toRet[i, j, 0];
if (d != 0 && d != 1 && d != 2)
throw new AssertException("d should be -1, 0, 1 or 2. but it's" + d.ToString());
if (toRet[i, j, 6] == null)
{
//Console.WriteLine("toRet[i, j, 6] == null");
continue;
}
long maxJHpTime = (long)toRet[i, j, 6];
//if (lastMaxJHpTime >= (long)toRet[i, j, 6])
// continue;
//lastMaxJHpTime = (long)toRet[i, j, 6];
if (d == 0)
db++;
else if (d == 1)
ds++;
else
dn++;
int v = (int)toRet[i, j, 1];
if (d != 2)
{
if (v == 3 || d == v)
{
if (d == 0)
{
tpb++;
}
else if (d == 1)
{
tps++;
}
}
else
{
if (d == 0)
{
fpb++;
}
else if (d == 1)
{
fps++;
}
}
}
DateTime nowDate = WekaUtils.GetDateFromTime((long)toRet[i, j, 3]);
DateTime nextDate = WekaUtils.GetDateFromTime((long)toRet[i, j, 2]);
//nextDate = WekaUtils.GetDateFromTime(maxJHpTime);
//if (j == 0)
{
if (tpb + fpb + tps + fps != 0)
{
ret = (string.Format("{0}, tn={1},tc={2}, db={3},ds={4},dn={5}, tpb={6},fpb={7},tps={8},fps={9},p={10}",
nextDate.ToString(Parameters.DateTimeFormat), toRet[i, j, 4], toRet[i, j, 5],
db, ds, dn,
tpb, fpb, tps, fps, ((double)(tpb+tps) / (tpb + fpb + tps + fps)).ToString("F2")));
}
else
{
ret = (string.Format("{0}, tn={1},tc={2}, db={3},ds={4},dn={5}, tpb={6},fpb={7},tps={8},fps={9},p={10}",
nextDate.ToString(Parameters.DateTimeFormat), toRet[i, j, 4], toRet[i, j, 5],
db, ds, dn,
tpb, fpb, tps, fps, 0));
}
WekaUtils.Instance.WriteLog(ret);
}
//if (d != 2)
{
using (StreamWriter sw = new StreamWriter(resultFile, true))
{
sw.WriteLine(string.Format("{1}, {2}, {6}, {3}, {4}, {5}", nowDate,
nextDate.ToString(Parameters.DateTimeFormat),
d, v, (double)toRet[i, j, 7],
WekaUtils.GetDateFromTime(maxJHpTime).ToString(Parameters.DateTimeFormat),
toRet[i, j, 8]));
}
}
}
}
}
}
else
{
for (int i0 = allInstancesWithDate.numInstances() - 1; i0 < allInstancesWithDate.numInstances() && i0 >= 0; i0++)
{
List<Tuple<int, int>> toTest = new List<Tuple<int, int>>();
toTest.Add(new Tuple<int, int>(i0, toTest.Count));
var toRet0 = new Tuple<weka.core.Instances, weka.core.Instances, long, int, int>[toTest.Count];
for (int i = 0; i < toTest.Count; ++i)
{
var r = action(toTest[i]);
toRet0[i] = r;
}
object[, ,] toRet = new object[toTest.Count, step, 9];
for (int i = 0; i < toTest.Count; ++i)
{
for (int j = 0; j < toRet.GetLength(1); ++j)
toRet[i, j, 0] = 2;
if (toRet0[i] != null)
{
var trainInstances = toRet0[i].Item1;
var trainInstancesWithDate = toRet0[i].Item2;
var maxjHpTime = toRet0[i].Item3;
var maxjHpTimeHp = toRet0[i].Item4;
var maxjHpTimeCount = toRet0[i].Item5;
bool b = IncrementTestTrainCheck(resultFile, maxjHpTime, maxjHpTimeHp, maxjHpTimeCount, toTest[i]);
var r = IncrementTestTrain(b, clsCreator, resultFile, step, trainInstances, trainInstancesWithDate, allInstances, allInstancesWithDate,
maxjHpTime, maxjHpTimeHp, toTest[i]);
if (r != null)
{
for (int j = 0; j < toRet.GetLength(1); ++j)
for (int k = 0; k < toRet.GetLength(2); ++k)
toRet[i, j, k] = r[j, k];
}
}
}
for (int j = 0; j < step; ++j)
{
int d = (int)toRet[0, j, 0];
if (d != 0 && d != 1 && d != 2)
throw new AssertException("d should be -1, 0, 1 or 2.");
if (toRet[0, j, 6] == null)
continue;
long maxJHpTime = (long)toRet[0, j, 6];
//if (lastMaxJHpTime >= (long)toRet[i, j, 6])
// continue;
//lastMaxJHpTime = (long)toRet[i, j, 6];
int v = (int)toRet[0, j, 1];
DateTime nowDate = WekaUtils.GetDateFromTime((long)toRet[0, j, 3]);
DateTime nextDate = WekaUtils.GetDateFromTime((long)toRet[0, j, 2]);
//nextDate = WekaUtils.GetDateFromTime(maxJHpTime);
//if (d != 2)
{
using (StreamWriter sw = new StreamWriter(resultFile, true))
{
sw.WriteLine(string.Format("{1}, {2}, {6}, {3}, {4}, {5}", nowDate,
nextDate.ToString(Parameters.DateTimeFormat),
d, v, (double)toRet[0, j, 7],
WekaUtils.GetDateFromTime(maxJHpTime).ToString(Parameters.DateTimeFormat),
toRet[0, j, 8]));
}
}
}
}
}
return ret;
}
//private void ConvertNorminalToString(string fileName)
//{
// List<string> list = new List<string>();
// using (System.IO.StreamReader sr = new System.IO.StreamReader(fileName))
// {
// while (true)
// {
// if (sr.EndOfStream)
// break;
// string s = sr.ReadLine();
// if (string.IsNullOrEmpty(s))
// continue;
// int idx = s.IndexOf(' ');
// string c = idx == -1 ? s : s.Substring(0, idx);
// if (Convert.ToDouble(c) == 0)
// {
// list.Add("-1.0 " + (idx == -1 ? string.Empty : s.Substring(idx + 1)));
// }
// else if (Convert.ToDouble(c) == 1)
// {
// list.Add("0.0 " + (idx == -1 ? string.Empty : s.Substring(idx + 1)));
// }
// else if (Convert.ToDouble(c) == 2)
// {
// list.Add("+1.0 " + (idx == -1 ? string.Empty : s.Substring(idx + 1)));
// }
// else
// {
// list.Add(s);
// }
// }
// }
// using (System.IO.StreamWriter sw = new System.IO.StreamWriter(fileName))
// {
// foreach (string s in list)
// {
// sw.WriteLine(s);
// }
// }
//}
//private Random m_randomGenerator;
private void AddInstancesAccordWeight(Instances instances)
{
// 0, 2
double[] weights = MincostLiblinearClassifier.GetCount(instances);
if (weights == null)
return;
double c = m_tp / m_sl;
if (c == 1 && weights[0] == weights[1])
return;
int n = 0;
int toCopyClass = 0;
if (c >= 1)
{
int shouldWeight1 = (int)(c * weights[1]);
n = (int)(shouldWeight1 - weights[1]);
toCopyClass = 2;
}
else
{
int shouldShouldWeight0 = (int)(1 / c * weights[0]);
n = (int)(weights[1] - weights[0]);
toCopyClass = 0;
}
//m_randomGenerator = new Random((int)System.DateTime.Now.Ticks);
List<Instance> copyInstances = new List<Instance>();
for (int i = 0; i < instances.numInstances(); ++i)
{
if (instances.instance(i).classValue() == toCopyClass)
{
copyInstances.Add(instances.instance(i));
}
}
int nAll = n / copyInstances.Count;
for (int j = 0; j < nAll; ++j)
{
for (int i = 0; i < copyInstances.Count; ++i)
{
Instance newInstance = new weka.core.DenseInstance(copyInstances[i]);
instances.add(newInstance);
newInstance.setDataset(instances);
}
}
//for (int j = 0; j < n - nAll * copyInstances.Count; ++j)
//{
// int idx = (int)(m_randomGenerator.NextDouble() * copyInstances.Count);
// idx = Math.Min(idx, copyInstances.Count - 1);
// Instance newInstance = new weka.core.DenseInstance(copyInstances[idx]);
// instances.add(newInstance);
// newInstance.setDataset(instances);
//}
if (n - nAll * copyInstances.Count > 0)
{
Instance avgInstance = new weka.core.DenseInstance(instances.numAttributes());
for (int i = 0; i < avgInstance.numAttributes(); ++i)
{
double sum = 0;
for (int j = 0; j < copyInstances.Count; ++j)
{
sum += copyInstances[j].value(i);
}
avgInstance.setValue(i, sum / copyInstances.Count);
}
for (int j = 0; j < n - nAll * copyInstances.Count; ++j)
{
Instance newInstance = new weka.core.DenseInstance(avgInstance);
instances.add(newInstance);
}
}
}
//private void ConvertNorminalToString(string fileName)
//{
// List<string> list = new List<string>();
// using (System.IO.StreamReader sr = new System.IO.StreamReader(fileName))
// {
// while (true)
// {
// if (sr.EndOfStream)
// break;
// string s = sr.ReadLine();
// if (string.IsNullOrEmpty(s))
// continue;
// int idx = s.IndexOf(' ');
// string c = idx == -1 ? s : s.Substring(0, idx);
// if (Convert.ToDouble(c) == 0)
// {
// list.Add("-1.0 " + (idx == -1 ? string.Empty : s.Substring(idx + 1)));
// }
// else if (Convert.ToDouble(c) == 1)
// {
// list.Add("0.0 " + (idx == -1 ? string.Empty : s.Substring(idx + 1)));
// }
// else if (Convert.ToDouble(c) == 2)
// {
// list.Add("+1.0 " + (idx == -1 ? string.Empty : s.Substring(idx + 1)));
// }
// else
// {
// list.Add(s);
// }
// }
// }
// using (System.IO.StreamWriter sw = new System.IO.StreamWriter(fileName))
// {
// foreach (string s in list)
// {
// sw.WriteLine(s);
// }
// }
//}
//private Random m_randomGenerator;
private void AddInstancesAccordWeight(Instances instances)
{
// 0, 2
double[] weights = MincostLiblinearClassifier.GetCount(instances);
if (weights == null)
{
return;
}
double c = m_tp / m_sl;
if (c == 1 && weights[0] == weights[1])
{
return;
}
int n = 0;
int toCopyClass = 0;
if (c >= 1)
{
int shouldWeight1 = (int)(c * weights[1]);
n = (int)(shouldWeight1 - weights[1]);
toCopyClass = 2;
}
else
{
int shouldShouldWeight0 = (int)(1 / c * weights[0]);
n = (int)(weights[1] - weights[0]);
toCopyClass = 0;
}
//m_randomGenerator = new Random((int)System.DateTime.Now.Ticks);
List <Instance> copyInstances = new List <Instance>();
for (int i = 0; i < instances.numInstances(); ++i)
{
if (instances.instance(i).classValue() == toCopyClass)
{
copyInstances.Add(instances.instance(i));
}
}
int nAll = n / copyInstances.Count;
for (int j = 0; j < nAll; ++j)
{
for (int i = 0; i < copyInstances.Count; ++i)
{
Instance newInstance = new weka.core.DenseInstance(copyInstances[i]);
instances.add(newInstance);
newInstance.setDataset(instances);
}
}
//for (int j = 0; j < n - nAll * copyInstances.Count; ++j)
//{
// int idx = (int)(m_randomGenerator.NextDouble() * copyInstances.Count);
// idx = Math.Min(idx, copyInstances.Count - 1);
// Instance newInstance = new weka.core.DenseInstance(copyInstances[idx]);
// instances.add(newInstance);
// newInstance.setDataset(instances);
//}
if (n - nAll * copyInstances.Count > 0)
{
Instance avgInstance = new weka.core.DenseInstance(instances.numAttributes());
for (int i = 0; i < avgInstance.numAttributes(); ++i)
{
double sum = 0;
for (int j = 0; j < copyInstances.Count; ++j)
{
sum += copyInstances[j].value(i);
}
avgInstance.setValue(i, sum / copyInstances.Count);
}
for (int j = 0; j < n - nAll * copyInstances.Count; ++j)
{
Instance newInstance = new weka.core.DenseInstance(avgInstance);
instances.add(newInstance);
}
}
}