/// <summary>
/// Append adaptation mapping file.
/// </summary>
/// <param name="filePath">The given file name.</param>
public void Append(string filePath)
{
Helper.ThrowIfFileNotExist(filePath);
using (StreamReader sr = new StreamReader(filePath))
{
string line = null;
while ((line = sr.ReadLine()) != null)
{
AdaptationMapping oneMapping = new AdaptationMapping();
string[] items = line.Split(new char[] { '\t', ' ' });
AdaptationTransformType type = (AdaptationTransformType)Enum.Parse(typeof(AdaptationTransformType), items[0], true);
int transformNum = int.Parse(items[1]);
for (int i = 0; i < transformNum; ++i)
{
line = sr.ReadLine();
items = line.Split(new char[] { '\t', ' ' });
Collection<string> modelCollection = new Collection<string>();
int transformIndex = int.Parse(items[0]);
int modelNum = int.Parse(items[1]);
for (int j = 0; j < modelNum; ++j)
{
modelCollection.Add(items[j + 2]);
}
oneMapping.Transform2ModelMapping.Add(transformIndex, modelCollection);
}
_adaptationMappings.Add(type, oneMapping);
}
}
}
/// <summary>
/// Creates mapping relationship between transform matrix and shared streams.
/// </summary>
/// <param name="mmfFile">The HMM model file, including unseen model.</param>
/// <param name="regressionBaseFile">The regression base class definition file.</param>
/// <param name="xformFile">The transform matrix file.</param>
/// <returns>The mapping relationship between transform matrix and shared streams.</returns>
public static AdaptationMapping CreateXformStreamMapping(string mmfFile, string regressionBaseFile, string xformFile)
{
Dictionary<string, string[,]> hmmStateMapping = HmmReader.GetHmmAndStateMapping(mmfFile);
HtsRegressionBaseFile baseClassFile = new HtsRegressionBaseFile();
baseClassFile.Load(regressionBaseFile);
HtsTransformFile transformFile = new HtsTransformFile();
transformFile.Load(xformFile);
AdaptationMapping adaptationMapping = new AdaptationMapping();
foreach (KeyValuePair<int, Collection<int>> pair in transformFile.MeanFormMapping)
{
int xFormIndex = pair.Key;
Debug.Assert(!adaptationMapping.Transform2ModelMapping.ContainsKey(xFormIndex));
adaptationMapping.Transform2ModelMapping.Add(xFormIndex, new Collection<string>());
foreach (int baseClassIndex in pair.Value)
{
foreach (var baseItem in baseClassFile.ClassDef[baseClassIndex])
{
string[,] streamList = hmmStateMapping[baseItem.Name];
string streamName = streamList[0, 0]; // for duration model
if (baseItem.StreamIndex > 0)
{
streamName = streamList[baseItem.StateIndex - 2, baseItem.StreamIndex - 1];
}
if (!adaptationMapping.Transform2ModelMapping[xFormIndex].Contains(streamName))
{
adaptationMapping.Transform2ModelMapping[xFormIndex].Add(streamName);
}
}
}
}
return adaptationMapping;
}
