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（1）Synset類(lèi)的定義：描述了WordNet 的pos.data文件中的同義詞組。每

一個(gè)Synset表達了一個(gè)概念，并且其包含了一組同義詞。Synset被Pointers

鏈接成相關(guān)概念的網(wǎng)絡(luò )，這就是WordNet的Net；getTarget可以從這個(gè)鏈中

抽取出目標；getPointer可以抽取出pointers自己本身。
  A Synset, or synonym set, represents a line of a WordNet

pos.data file. A Synset represents a concept, and contains a

set of Words, each of which has a sense that names that concept

(and each of which is therefore synonymous with the other words

in the Synset). Synset‘s are linked by Pointers into a network

of related concepts; this is the Net in WordNet. getTarget

retrieves the targets of these links, and getPointer retrieves

the pointers themselves.
（2）、A Pointer encodes a lexical or semantic relationship

between WordNet entities. A lexical relationship holds between

Words; a semantic relationship holds between Synsets.

Relationships are directional: the two roles of a relationship

are the source and target. Relationships are typed: the type of

a relationship is a PointerType, and can be retrieved via

getType.
（3）、An IndexWord represents a line of the pos.index file. An

IndexWord is created retrieved or retrieved via

DictionaryDatabase.lookupIndexWord(edu.gwu.wordnet.POS,

java.lang.String), and has a lemma, a pos, and a set of senses,

which are of type Synset.
（4）、POS：Instances of this class enumerate the possible major

syntactic categories, or part‘s of speech. Each POS has a

human-readable label that can be used to print it, and a key by

which it can be looked up.
（5）、A Word represents the lexical information related to a

specific sense of an IndexWord. Word‘s are linked by Pointers

into a network of lexically related words. getTarget retrieves

the targets of these links, and getPointer retrieves the

pointers themselves.
（6）、A PointerTarget is the source or target of a Pointer. The

target of a semantic PointerTarget is a Synset; the target of a

lexical PointerTarget is a Word.
（7）、PointerType：Instances of this class enumerate the

possible WordNet pointer types, and are used to label

PointerTypes. Each PointerType carries additional information:

a human-readable label, an optional reflexive type that labels

links pointing the opposite direction, an encoding of

parts-of-speech that it applies to, and a short string that

represents it in the dictionary files.