/// <summary>
/// Updates the feature generator with the given descriptor.
/// </summary>
/// <param name="descriptor">The descriptor.</param>
/// <returns>A updated <see cref="ITokenNameFinder"/> model.</returns>
public TokenNameFinderModel UpdateFeatureGenerator(byte[] descriptor)
{
if (artifactMap == null || !artifactMap.ContainsKey(MaxentModelEntry))
{
return(null);
}
TokenNameFinderModel model;
var meModel = artifactMap[MaxentModelEntry] as IMaxentModel;
if (meModel != null)
{
model = new TokenNameFinderModel(
Language,
meModel,
1,
descriptor,
new Dictionary <string, object>(),
new Dictionary <string, string>(),
Factory.CreateSequenceCodec(),
Factory);
goto found;
}
var scModel = artifactMap[MaxentModelEntry] as ISequenceClassificationModel <string>;
if (scModel != null)
{
model = new TokenNameFinderModel(
Language,
NameFinderSequenceModel,
descriptor,
new Dictionary <string, object>(),
new Dictionary <string, string>(),
Factory.CreateSequenceCodec(),
Factory);
goto found;
}
throw new NotSupportedException("Unexpected model type in the artifact map.");
found:
model.artifactMap.Clear();
model.artifactMap.AddRange(artifactMap);
model.artifactMap[GeneratorDescriptorEntry] = descriptor;
return(model);
}
/// <summary>
/// Initializes a new instance of the <see cref="NameFinderME"/> using the given <see cref="TokenNameFinderModel"/>.
/// </summary>
/// <param name="model">The model.</param>
/// <exception cref="System.ArgumentNullException">model</exception>
public NameFinderME(TokenNameFinderModel model) {
if (model == null)
throw new ArgumentNullException("model");
sequenceCodec = model.Factory.CreateSequenceCodec();
sequenceValidator = sequenceCodec.CreateSequenceValidator();
this.model = model.NameFinderSequenceModel;
contextGenerator = model.Factory.CreateContextGenerator();
// TODO: We should deprecate this. And come up with a better solution!
additionalContextFeatureGenerator = new AdditionalContextFeatureGenerator();
contextGenerator.AddFeatureGenerator(
new WindowFeatureGenerator(additionalContextFeatureGenerator, 8, 8));
}
/// <summary>
/// Initializes a new instance of the <see cref="NameFinderME"/> using the given <see cref="TokenNameFinderModel"/>.
/// </summary>
/// <param name="model">The model.</param>
/// <exception cref="System.ArgumentNullException">model</exception>
public NameFinderME(TokenNameFinderModel model)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
sequenceCodec = model.Factory.CreateSequenceCodec();
sequenceValidator = sequenceCodec.CreateSequenceValidator();
this.model = model.NameFinderSequenceModel;
contextGenerator = model.Factory.CreateContextGenerator();
// TODO: We should deprecate this. And come up with a better solution!
additionalContextFeatureGenerator = new AdditionalContextFeatureGenerator();
contextGenerator.AddFeatureGenerator(
new WindowFeatureGenerator(additionalContextFeatureGenerator, 8, 8));
}
private static bool HasOtherAsOutcome(TokenNameFinderModel nameFinderModel) {
var outcomes = nameFinderModel.NameFinderSequenceModel.GetOutcomes();
return outcomes.Any(s => s.Equals(NameFinderME.Other));
}
/// <summary>
/// Updates the feature generator with the given descriptor.
/// </summary>
/// <param name="descriptor">The descriptor.</param>
/// <returns>A updated <see cref="ITokenNameFinder"/> model.</returns>
public TokenNameFinderModel UpdateFeatureGenerator(byte[] descriptor) {
if (artifactMap == null || !artifactMap.ContainsKey(MaxentModelEntry))
return null;
TokenNameFinderModel model;
var meModel = artifactMap[MaxentModelEntry] as IMaxentModel;
if (meModel != null) {
model = new TokenNameFinderModel(
Language,
meModel,
1,
descriptor,
new Dictionary<string, object>(),
new Dictionary<string, string>(),
Factory.CreateSequenceCodec(),
Factory);
goto found;
}
var scModel = artifactMap[MaxentModelEntry] as ISequenceClassificationModel<string>;
if (scModel != null) {
model = new TokenNameFinderModel(
Language,
NameFinderSequenceModel,
descriptor,
new Dictionary<string, object>(),
new Dictionary<string, string>(),
Factory.CreateSequenceCodec(),
Factory);
goto found;
}
throw new NotSupportedException("Unexpected model type in the artifact map.");
found:
model.artifactMap.Clear();
model.artifactMap.AddRange(artifactMap);
model.artifactMap[GeneratorDescriptorEntry] = descriptor;
return model;
}
