| World natural language processing has entered the sentence processing stage,after word processing and character processing.The core problem of the sentence processing is to let the computer understand and generate the sentences of natural language.Whether it is based on rules or based on the statistical processing strategy,are faced with syntax-semantic interface problems.In this paper,on the basis of the theory of semantic grammar and related research results,taking the command causative verbs as the research object,from the angle of "lexical unit-role realization-role sorting-syntactical mapping-interactive relationship ",we reveals the syntax-semantic interface mechanism of command causative verbs.First of all,based on the research achievements of lexical semantic and syntactic semantic,at the semantic level of lexical,we analyze lexical semantics of 10 command causative verbs.At the semantic level of syntactic,we analyze the semantic roles and syntactic categories of semantic of command causative verbs,when they are in combination,and we form a semantic set of syntactic categories.Secondly,based on annotation corpus of command causative verbs,we look into cohesion problem of lexical unit and syntactic category,and reveal thecohesive mechanism of lexical units to be transformed into syntactic category by category meaning,that is to say,the same category features decide the same syntactic expression,the different lexical features control the concrete combination objects.Then,based on annotation corpus of command causative verbs,we extract the modals of semantic roles of command causative verbs,and analysis the mold type and the quantity of the prototype model and derived sentences,thus revealing the generating mechanism of generating mechanism command causative verbs.In the light of results,we found that the command causative verbs forming a total of 439 kinds of sentence patterns in 29 categories,which simple causative verbs forming a total of 207 kinds of sentence patterns in 10 categories,and polysemy causative verbs forming a total of 232 kinds of sentence patterns in 19 categories.On this basis,we explore the mapping of semantic roles and the correspondence of sentence patterns,and examine the priority sequence of the role syntactic implementation.From lexical semantic perspective,the component location map of semantic role to the prototype of the syntactic is restricted by the lexical semantics.For the prototype position inner roles,causer and agent are the subject,patient and other object roles are the object.In particular,the subject role of VP2 is the empty category,which is compressed with the subject roles and mapped to the object.Finally,based on annotation corpus of command causative verbs,we discuss the interaction between lexical semantics and syntactic semantics in two ways.Lexical semantics constrains the syntactic structure,and syntactic structure is anti restrictive to semantics.On the one hand,in the process of vocabulary-syntax semantic cohesion,from lexical to the semantic roles of cohesion,semantic role to the syntactic component of the projection,lexical semantic always play an underlying restrictive role.The lexical semantic feature of simple causative verbs determines that the subject roles are the word that has[-nature]or the meaning field of the event,and the object role is the word that has the human meaning field with[+nature];The lexical semantic feature of polysemy causative verbs determines that both the subject roles and the object roles are the words of the human semantic field with[+nature].On the other hand,the syntactic structure has an anti restrictive effect on lexical semantics.The syntactic structure of simple causative verbs have a law of the conservation of semantics,which makes up for the lack of semantic meaning caused by some components in the structure.The syntactic structure of polysemy causative verbs has an highlighting,increasing and transforming effect on lexical semantics,which is into the syntactic structure. |
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