| This paper probes into the concept,function and lexical classification of multiclass Tibetan words.Concurrent words can mean that a word has two or more parts of speech in different sentences,while the Tibetan concurrent words are basically the same form and sound of different words,which can kill two birds with one stone in the sentence.This linguistic phenomenon can represent the infinite things in the world with finite language symbols.In order to study the Tibetan dual-class words,this paper adopts the modern linguistic theory and computational linguistics method,collects a large number of dual-class words from the corpus,and draws on the latest achievements in the study of dual-class words.In this paper,the classification of more than 60 concurrent words and their grammatical functions are discussed,and the function word classification of concurrent words is briefly discussed.Finally,this paper takes the problem of labeling as an example,and puts forward the problems and suggestions that should be paid attention to when identifying the dual-class Tibetan words.Chapter one is about the related concepts of annotated corpora.The meaning,characteristics and functions of annotated corpus are defined through literature search,and the mention of Tibetan annotated corpus is bound to be closely related to the classification of Tibetan words.Therefore,the classification and partof speech tagging of Tibetan words by all scholars so far are listed,as well as the source and analysis of corpus.The second chapter is about the related concepts of concurrent words.Through reading literature,it is clear the concept,generation,classification,and the difference and connection between the multi-class Tibetan words and polysemous words.The third chapter is the concurrent category of content words.In the tagging corpus makes a classification of more than 60 Tibetan multi-category words,Tibetan content words and class I divided into the following categories,move and class,and class,name and class as well as other multicategory words,the internal name and class and are divided into transitive verbs and nouns of multi-category,intransitive verbs and nouns and class,Verbs and forms are divided into transitive verbs and adjectives,intransitive verbs and adjectives,nounforms are divided into general adjectives and nouns,predicate adjectives and nouns.The fourth chapter is about the concurrent classes of function words.There are 76 function words in Tibetan,among which there are 19 case auxiliary words,16 free function words and 41 non-free function words.There are 11 middle case auxiliary words that double as other parts of speech,5 free function words that double as other parts of speech,17 not free function words that double as other parts of speech,and 33 function words that double as other parts of speech.These function words are put in sentences for grammatical function analysis.The fifth chapter is how to identify the Tibetan concurrent words.By function words,contextual semantics,vocabulary,adverbs,position in sentences and other ways to determine the Tibetan dual-class words. |