Classifier

Classes
struct	Tanl::TokenField
	Describes the fields in each token in a corpus. More...
struct	Tanl::CorpusFormat
	Representatation of Corpus data format. More...
class	Tanl::CorpusFormatError
class	Tanl::Corpus
	Represents common aspects of a Corpus. More...
struct	Tanl::CorpusMap
	Associates a Corpus constructor to a corpus name. More...
struct	Tanl::Language
	Functional interface for extractors of morphological features. More...
struct	Tanl::ArabicLanguage
struct	Tanl::IndianLanguage
struct	Tanl::BanglaLanguage
struct	Tanl::BasqueLanguage
struct	Tanl::BulgarianLanguage
struct	Tanl::CatalanLanguage
struct	Tanl::ChineseLanguage
struct	Tanl::CzechLanguage
struct	Tanl::DanishLanguage
struct	Tanl::DutchLanguage
struct	Tanl::EnglishLanguage
struct	Tanl::FrenchLanguage
struct	Tanl::GermanLanguage
struct	Tanl::GreekLanguage
struct	Tanl::ItalianLanguage
struct	Tanl::ItalianTutLanguage
struct	Tanl::JapaneseLanguage
struct	Tanl::HindiLanguage
struct	Tanl::HungarianLanguage
struct	Tanl::PortugueseLanguage
struct	Tanl::SloveneLanguage
struct	Tanl::SpanishLanguage
struct	Tanl::SwedishLanguage
struct	Tanl::TeluguLanguage
struct	Tanl::TurkishLanguage
class	Tanl::SentenceReader
struct	Tanl::AttributeIndex
	Associates to an attribute name the index of its value in a attribute vector. More...
struct	Tanl::Attributes
	Represents the attributes of a token. More...
struct	Tanl::TokenLink
	Represents links to other tokens. More...
struct	Tanl::Tag
	Represents SGML tags. More...
struct	Tanl::Context
	Represents contexts of the tokens. More...
struct	Tanl::Token
	Represents a sentence token (a word in a sentence). More...
class	Tanl::Classifier::Classifier
	Abstract class for ML classifiers. More...
class	Tanl::Classifier::Features
	Representation of features during training. More...
class	Tanl::Classifier::Context
	Representation of a set of features by means of their internal IDs. More...
class	Tanl::Classifier::FeatureEncoder
	Used to fill Context from unencoded features. More...
class	Tanl::Classifier::GenericEvent< FeatureType >
	Generic class for events. More...
class	Tanl::Classifier::EventStream
	Interface for objects that deliver a stream of training events for computing a Maxent model, through GIS, LMBFG or other procedures. More...
class	Tanl::Classifier::FileError
class	Tanl::Classifier::EventStreamError
class	ME::EventStream
	A stream of training events. More...
class	Tanl::Classifier::FeatureExtractor< Features, Item >
	Interface for feature extractors. More...
class	Tanl::Classifier::GIS
	Generalized Iterative Scaling algorithm to find the parameters {lambda1, . More...
class	Tanl::Classifier::LBFGS
class	Tanl::Classifier::MaxEnt
	A Maximum Entropy classifier. More...
class	Tanl::Classifier::StreamTokenizer
class	Tanl::Classifier::FileTokenizer
class	Tanl::Enumerator< T >
	Enumerator interface. More...
struct	Tanl::IPipe< Tin, Tout >
	IPipe interface. More...
class	Tanl::Iterator< T >
	Iterator interface. More...
struct	Tanl::RefCountable
struct	Tanl::Tagger
	Interface for tagging each token in a sentence with supplementary information, such as its part of speech. More...
class	Tanl::Timer
	Class for timing durations. More...
Typedefs
typedef std::vector < std::vector< std::pair < ClassID, int > > >	Tanl::Classifier::ContribTable
	L-BFGS algorithm to find the parameters {alpha1, .

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Typedef Documentation

typedef std::vector<std::vector<std::pair<ClassID, int> > > Tanl::Classifier::ContribTable

L-BFGS algorithm to find the parameters {alpha1, .

.., alphak} of the unique distribution

p* = argmax H(p) p in P

where

P = { p | Epfj = Ep~fj, j = {1, .. , k}}

S = {(a1, b1), ... , (aN, bN)}, ai in A, bj in B (the trainig set)

p(x)the model p's probability of x

p~(x)observerd probability of x in S

Epfj = SUM p(x) fj(x) x in AxB

Ep~fj = SUM p~(x) fj(x) x in AxB