Evolution hypergraph net was introduced to formalize product process information for life cycle 引入進(jìn)化超圖網(wǎng)絡(luò)對(duì)全生命周期中產(chǎn)品過(guò)程信息進(jìn)行形式化表達(dá)。
The structures of product information were formalized by structural hypergraph . vpmflc will be studied progressively by hypergraph 用結(jié)構(gòu)化超圖對(duì)產(chǎn)品信息的分類和組織關(guān)系進(jìn)行形式化描述。
We propose to analyze the spacial conformation of particles by integrating the concepts of the convex hull , hypergraph and depth 摘要本文的主要目的是把空間多面體、超圖與深度這三個(gè)概念綜合起來(lái),作為描述與分析空間質(zhì)點(diǎn)系形態(tài)的基本工具。
It must be in reason to structure product information . it provides the base to search , reuse , modify , and trace product information . the theory research of vpmflc was presented by hypergraph 面向全生命周期虛擬產(chǎn)品模型對(duì)全生命周期產(chǎn)品信息進(jìn)行結(jié)構(gòu)化集成;在結(jié)構(gòu)化過(guò)程中應(yīng)使產(chǎn)品信息表達(dá)合理,為產(chǎn)品信息的快速檢索、重用、修改以及追蹤提供基礎(chǔ)。
Markov ' s inequality and four kinds of lovasz local lemma , and give different applications in hypergraphs with these probabilistic methods , we find different conditions for a hypergraph to be 2 - colorable with some kinds of thinkings ) sz局部引理的內(nèi)容,給出了這幾種概率方法在超圖上的應(yīng)用,用幾種思路找到了超圖存在2 -可染色的不同條件,其中著重對(duì)一般形式的lov (
Research result shows that the object - oriented geographic spatial model has stronger representative ability , is easier understood and accepted ; using the concept of geometric data type unify the process method of attribute and spatial data , and simplify entity query and analyses . the topologic relations between entities , which are not been stored in explicit formulation in the model , can be achieved through collective operation of geometric object ' s hypergraph model . compared with traditional his , the query and analyses ability of which based on new model are stronger 研究結(jié)果表明,面向?qū)ο蟮牡乩砜臻g模型具有更強(qiáng)的表現(xiàn)能力,并且容易被理解和接受;采用幾何數(shù)據(jù)類型的概念,可以使對(duì)非空間數(shù)據(jù)和空間數(shù)據(jù)的處理方法相統(tǒng)一,而且會(huì)使對(duì)實(shí)體的各種屬性數(shù)據(jù)(包括空間屬性)的查詢和分析模型更加簡(jiǎn)單;對(duì)于面向?qū)ο竽P椭胁伙@式表示的地理實(shí)體間的空間拓?fù)潢P(guān)系,可以利用實(shí)體的幾何對(duì)象的超圖模型間的集合運(yùn)算來(lái)求得;基于面向?qū)ο蟮乩砜臻g模型的實(shí)體查詢和分析,也比基于傳統(tǒng)gis數(shù)據(jù)庫(kù)查詢和分析具有強(qiáng)得多的功能。
And hbds model is extended to hoom model . hoom is an objected - oriented integrated spatial model , which integrated geometric model , geographical feature model , geographical representation model , spatial calculation model and temporal model that based on hypergraph model . a normal object - oriented multi - resolution model is proposed to manage integrated multi - resolution spatial data that is dlg and dem data 這兩類空間數(shù)據(jù)的建模方法存在較大的差異,第一類數(shù)據(jù)的建模是通過(guò)特征模型和超圖對(duì)象模型實(shí)現(xiàn)的,第二類數(shù)據(jù)的建模是通過(guò)對(duì)自適應(yīng)規(guī)則三角形和不規(guī)則三角形的簡(jiǎn)化與細(xì)化算法的研究實(shí)現(xiàn)的。
The former one gains the aim of improving the recommended speed by grouping the transaction clusters , which make system has ability to solve the limitations of the collaborative filtering technology which ca n ' t process huge data . the latter one adopts hypergraph partitioning skill and effectively groups the association rules according to the users " historical visiting data 基于關(guān)聯(lián)規(guī)則聚類的推薦算法采用超圖劃分的技術(shù),對(duì)根據(jù)用戶的歷史訪問(wèn)數(shù)據(jù)得到的關(guān)聯(lián)規(guī)則進(jìn)行有效的分組,可以找出不同興趣用戶群的相同訪問(wèn)模式,提高了推薦的質(zhì)量。
As far as model is concerned , the forth generation software should be characterized with spatial entity - oriented . the paper established the geographic spatial model based on the thinking of object - oriented ; studied the structure of the model " s elementary unit - - geographic entity ; brought forward the concept of geometric data type which characterize entity ' s spatial feature in the structure ; defined five kinds of geometric data types such as point , arc , area , composite arc , composite area ; and formalized their collective operation using hypergraph . at the end of this paper writer studied preliminarily the method of entity query and analysis based on the model 本論文從面向?qū)ο蟮幕舅枷氤霭l(fā),建立了面向?qū)ο蟮牡乩砜臻g模型;研究了地理空間模型中的基本單位? ?地理實(shí)體的結(jié)構(gòu),針對(duì)實(shí)體結(jié)構(gòu)中用來(lái)表征實(shí)體空間特性的組成部分? ?幾何對(duì)象,提出了其取值范圍,即幾何數(shù)據(jù)類型的概念;對(duì)點(diǎn)、弧、面、復(fù)合弧和組合面五種幾何數(shù)據(jù)類型進(jìn)行了定義;并使用超圖工具對(duì)幾何數(shù)據(jù)類型的集合操作進(jìn)行了形式化描述;對(duì)基于面向?qū)ο蟮牡乩砜臻g模型的實(shí)體查詢和分析方法也做了初步研究。