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See:
Description
Interface Summary | |
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CacheStaleIndicator | Indicates when the value/gradient during training becomes stale. |
MaxLattice | The interface to classes implementing the Viterbi algorithm, finding the best sequence of states for a given input sequence. |
SumLattice | Interface to perform forward-backward during training of a transducer. |
Transducer.Incrementor | Methods to be called by inference methods to indicate partial counts of sufficient statistics. |
TransducerTrainer.ByOptimization |
Class Summary | |
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CRF | Represents a CRF model. |
CRF.Factors | A simple, transparent container to hold the parameters or sufficient statistics for the CRF. |
CRF.State | |
CRF.TransitionIterator | |
CRFCacheStaleIndicator | Indicates when the value/gradient becomes stale based on updates to CRF's parameters. |
CRFOptimizableByBatchLabelLikelihood | Implements label likelihood gradient computations for batches of data, can be easily parallelized. |
CRFOptimizableByBatchLabelLikelihood.Factory | |
CRFOptimizableByGradientValues | A CRF objective function that is the sum of multiple objective functions that implement Optimizable.ByGradientValue. |
CRFOptimizableByLabelLikelihood | An objective function for CRFs that is the label likelihood plus a Gaussian or hyperbolic prior on parameters. |
CRFOptimizableByLabelLikelihood.Factory | |
CRFTrainerByL1LabelLikelihood | CRF trainer that implements L1-regularization. |
CRFTrainerByLabelLikelihood | Unlike ClassifierTrainer, TransducerTrainer is not "stateless" between calls to train. |
CRFTrainerByStochasticGradient | Trains CRF by stochastic gradient. |
CRFTrainerByThreadedLabelLikelihood | |
CRFTrainerByValueGradients | A CRF trainer that can combine multiple objective functions, each represented by a Optmizable.ByValueGradient. |
CRFWriter | Saves a trained model to specified filename. |
FeatureTransducer | |
HMM | A Hidden Markov Model. |
HMM.State | |
HMM.TransitionIterator | |
HMMTrainerByLikelihood | |
InstanceAccuracyEvaluator | Reports the percentage of instances for which the entire predicted sequence was correct. |
LabelDistributionEvaluator | Prints predicted and true label distribution. |
MaxLatticeDefault | Default, full dynamic programming version of the Viterbi "Max-(Product)-Lattice" algorithm. |
MaxLatticeDefault.Factory | |
MaxLatticeFactory | |
MEMM | A Maximum Entropy Markov Model. |
MEMM.State | |
MEMM.TransitionIterator | |
MEMMTrainer | Trains and evaluates a MEMM . |
MultiSegmentationEvaluator | Evaluates a transducer model, computes the precision, recall and F1 scores; considers segments that span across multiple tokens. |
NoopTransducerTrainer | A TransducerTrainer that does no training, but simply acts as a container for a Transducer; for use in situations that require a TransducerTrainer, such as the TransducerEvaluator methods. |
PerClassAccuracyEvaluator | Determines the precision, recall and F1 on a per-class basis. |
Segment | Represents a labelled chunk of a Sequence segmented by a
Transducer , usually corresponding to some object extracted
from an input Sequence . |
SegmentationEvaluator | |
ShallowTransducerTrainer | Deprecated. Use NoopTransducerTrainer instead |
SimpleTagger | This class's main method trains, tests, or runs a generic CRF-based sequence tagger. |
SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence | Converts an external encoding of a sequence of elements with binary
features to a FeatureVectorSequence . |
SumLatticeBeam | |
SumLatticeBeam.Factory | |
SumLatticeConstrained | |
SumLatticeDefault | Default, full dynamic programming implementation of the Forward-Backward "Sum-(Product)-Lattice" algorithm |
SumLatticeDefault.Factory | |
SumLatticeFactory | Provides factory methods to create inference engine for training a transducer. |
SumLatticeScaling | |
SumLatticeScaling.Factory | |
ThreadedOptimizable | An adaptor for optimizables based on batch values/gradients. |
TokenAccuracyEvaluator | Evaluates a transducer model based on predictions of individual tokens. |
Transducer | A base class for all sequence models, analogous to classify.Classifier . |
Transducer.State | An abstract class used to represent the states of the transducer. |
Transducer.TransitionIterator | An abstract class to iterate over the states of the transducer. |
TransducerEvaluator | An abstract class to evaluate a transducer model. |
TransducerTrainer | An abstract class to train and evaluate a transducer model. |
TransducerTrainer.ByIncrements | |
TransducerTrainer.ByInstanceIncrements | |
ViterbiWriter | Prints the input instances along with the features and the true and predicted labels to a file. |
Transducers, including Conditional Random Fields (CRFs).
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