語法樹圖 的英文怎麼說
中文拼音 [yǔfǎshùtú]
語法樹圖
英文
grammar tree-
Aiming at this problem, the main research issues and achievements in this paper are as follows : bi - directional data transformation between rdb and xml with semantic constraints preserved for most of existing researches on static data transformation between xml and rdb, dtd is taken as the schema description language for xml, and the semantic constraints are often lost during the transformation process. to overcome these disadvantages, the author adopts xml - schema, a standard schema description language proposed by w3c to replace dtd, as the description method owing to its more powerful functions than dtd, and of course with the syntax much more complicated. after analyzing the constraints characteristics in both xml - schema and relational schema, a semantic constraints - preserved algorithm is proposed which can realize the bi - directional schema mapping between rdb and xml through a formalized description of xml based on regular tree and a general expression for relational schema based on direct graph approach
保留語義約束的xml與rdb雙向靜態數據轉換技術現有研究大多採用dtd （ documenttypedefinition ，文檔類型定義）作為xml的模式描述語言，並且在模式映射過程中丟失語義約束信息，本文分析了xml - schema （ xml - schema採用與dtd完全不同的語法，數據描述能力更強同時也更為復雜，已被w3c確定為替代dtd作為xml模式描述語言的標準）及關系模式的語義約束特徵，通過基於正則樹的xml形式化描述方法以及基於有向圖的一般關系模式表示方法的研究，建立保留語義約束的xml - schema與關系模式的雙向模式映射演算法，實現了xml與rdb的雙向數據轉換，較好地解決了xml與rdb在靜態數據轉換層面的數據集成問題，可有效滿足企業大量rdb數據面向xml的發布以及與日俱增的xml數據存入rdb的應用需求。Existent automatic grading model of programs can not deal with the programs with structural body. in this paper, we study the syntax and concept of structural body based on an existed model, and improve the original model in the following aspects : increasing the middle representation form of structural body in analysis of morphology and syntax and system dependence graph and abstract syntax tree, adding standardization rules, mainly including type definition, nesting structure, initialization, function invocation, renaming and sequence of program sentence, besides standardization rules of bit operation and program with enumeration, enhancing the function of inspecting syntax error and improving matching strategies
本文在原有的編程題自動評分模型的基礎上，對結構體的語法結構和實現原理進行研究，並在以下幾個方面完善原有模型:在詞法和語法分析、程序的系統依賴圖建立和抽象語法樹生成三個方面增加結構體類型的中間表示形式;擴充程序的標準化規則，主要包括類型定義標準化、結構體嵌套結構標準化、結構體初始化的標準化、結構體作為函數參數時函數調用標準化、結構體變量名稱標準化、結構體語句排列順序標準化等等;另外，還增加了位運算標準化、枚舉標準化以及文件的處理;增強學生程序中語法錯誤的檢測和改進程序匹配策略。The following works have been done : ( 1 ) define csl language and complete the lexical analysis and syntactical analysis of it ; ( 2 ) obtain control flow graph ( later referred as cfg ) from abstract syntax tree ( ast ) ; ( 3 ) control dependence analysis of csl ; ( 4 ) system architecture of csl slicing system
內容包括通過語法分析獲得源程序的抽象語法樹，從抽象語法樹構造控制流圖，在控制流圖上做控制流分析獲得源程序的控制依賴關系，在控制流圖上做數據流分析獲得源程序的數據依賴關系，以及最後獲得源程序的程序依賴圖並以圖可達性演算法獲得程序分片的全過程。In this paper, we firstly study two wcet analysis methods ( control flow graph based wcet analysis method and syntax tree based wcet analysis method ), and get integrated comprehension on the static wcet analysis
本文首先研究了兩種wcet分析方法（基於控制流圖的wcet分析方法和基於語法樹的wcet分析方法） ，加深了對靜態wcet分析的理解。This paper has a further study on the key technology called validity maintenance mechanism in semantic feature modeling in order to maintain the intent of designers and satisfy them. the method combines geometry model and semantic feature modeling, setting up new feature representation 、 cell element naming and identification method. in the meantime, a history - independence interactive feature boundary re - evaluation algorithm is presented based on feature editing. moreover, the validity recovery mechanism after invalid feature operation can maintain the original feature model. the above ideas have been realized on hust - caid ( computer aided industry design system developed by harbin university of science and technology ) preliminarily
為了能夠正確地維護設計者的設計意圖和滿足用戶的需求，本文在原有造型的基礎上對語義特徵造型中的關鍵技術即有效性維護機制進行深入的研究，將幾何模型，語義特徵模型結合起來統一進行研究，建立了語義特徵造型在產品模型設計過程中特徵表示方法的新理論、細胞元素命名方法和辨別機制，同時對系統原有特徵編輯過程進行了研究，提出了獨立於歷程樹的特徵邊界重構演算法以及模型操作無效時的有效性恢復方法。The author studies some important domain analysis methods in the world. because of the virtues of foda method, the paper researches over am / fm / gis domain with the foda method, tries to plot out the boundary of am / fm / gis domain, extracts the domain features of am / fm / gis, and gains am / fm / gis domain model, including domain structure model, context feature model, operational feature model, representation feature model, information model, and activity model. these models are expressed in uml modeling methods, class description language, and tree view diagram
論文在分析了眾多國內外領域分析方法的基礎上，選擇foda方法對am fm gis領域進行深入研究，界定其領域邊界，抽取出am fm gis領域特徵，得出了am fm gis領域結構圖、場景圖、特徵模型、信息模型和操作模型，並採用多種uml建模方法、類描述語言、樹狀圖等表達方式對相關模型進行描述，並在此am fm gis領域模型的基礎上探討了領域設計與實現。Linguistic elements, such as phonological features, syntactic units, and language groups are related to each other in complex ways. these relationships can be represented by matrices, networks, trees, and other graphic devices
語音特徵、句法單位、語言分支等語言元素之間的關系異常復雜，可用矩陣、網路、樹和其他圖像方式表示。The system realize the random binary three - dimensional recursive model, and generate three - dimensional tree model to compose natural scene ; in addition, it apply the accelerate algorithms based on the integrated polygon and texture, and realize interactive walkthrough in virtual environment
該系統用c + +語言實現了隨機二叉三維遞歸模型，生成三維樹木造型組成自然景物，並應用基於幾何和圖像的混合漫遊加速演算法，實現了虛擬環境的交互漫遊。分享友人