本文關(guān)鍵詞： 時(shí)空對象 屬性特征 時(shí)間尺度 語義尺度　出處：《地球信息科學(xué)學(xué)報(bào)》2017年09期 　論文類型：期刊論文

【摘要】：全空間地理信息系統(tǒng)的建設(shè)和智慧城市等GIS應(yīng)用的發(fā)展,需對各類地理實(shí)體或地理現(xiàn)象抽象成的時(shí)空對象采集多類型的屬性數(shù)據(jù),這些屬性數(shù)據(jù)一般具有多尺度、多維度、動(dòng)態(tài)性的特點(diǎn),帶給時(shí)空對象屬性特征的表達(dá)和管理一定的挑戰(zhàn)。本文針對當(dāng)前時(shí)空對象屬性特征表達(dá)方法中存在的組織結(jié)構(gòu)不清晰、存儲(chǔ)冗余、語義異構(gòu)等表達(dá)問題,提出了一套顧及語義尺度和動(dòng)態(tài)特性的屬性特征的表達(dá)和操作方法。該方法基于概念分類理論實(shí)現(xiàn)時(shí)空對象屬性信息的分類組織,在屬性特征表達(dá)中引入獨(dú)立于時(shí)空對象空間特征的時(shí)間標(biāo)記,結(jié)合屬性表達(dá)的原始集族和更新集族來記錄和管理不同時(shí)間節(jié)點(diǎn)下的時(shí)空對象屬性特征;進(jìn)而面向具有不同語義尺度表達(dá)需求的屬性特征,設(shè)置知識參考表達(dá)集合,并在屬性特征表達(dá)中增加語義尺度標(biāo)識,對其語義尺度及不同語義尺度間的轉(zhuǎn)換關(guān)系進(jìn)行描述。最后,基于獨(dú)立時(shí)間標(biāo)記、知識參照表達(dá)集合及語義尺度標(biāo)識,給出屬性信息表達(dá)在時(shí)間尺度轉(zhuǎn)換和語義尺度轉(zhuǎn)化的操作方法,并舉例給出了該屬性特征動(dòng)態(tài)表達(dá)和操作方法的一種實(shí)現(xiàn)。本文提出的方法有助于減少時(shí)空對象數(shù)據(jù)模型的存儲(chǔ)冗余,提高其屬性信息的操作效率,初步實(shí)現(xiàn)了時(shí)空對象屬性特征的多時(shí)間尺度和多語義尺度的認(rèn)知方式,為時(shí)空對象屬性特征的精細(xì)化管理提供了新思路。
[Abstract]:The construction of full spatial GIS and the development of GIS application such as wisdom city need to collect many kinds of attribute data for the spatio-temporal objects abstracted from various geographic entities or geographical phenomena. These attribute data generally have the characteristics of multi-scale, multi-dimensional, dynamic. This paper aims at the problems of unclear organization structure, storage redundancy, semantic heterogeneity and so on. In this paper, a set of representation and operation method of attribute feature, which takes into account semantic scale and dynamic characteristics, is proposed, which realizes the classification organization of attribute information of spatio-temporal objects based on the concept classification theory. In attribute feature representation, a time marker independent of spatial features of spatio-temporal objects is introduced, and the attribute features of spatio-temporal objects under different time nodes are recorded and managed by combining the original set family and update set family of attribute representation. Then we set up the set of knowledge reference representation and add the semantic scale identification in the attribute feature expression for the attribute features with different semantic scale expression requirements. Finally, based on independent time marker, knowledge reference representation set and semantic scale identification are described. The operation methods of attribute information representation in time scale transformation and semantic scale transformation are given. An example is given for the dynamic representation and operation of the attribute feature. The method proposed in this paper is helpful to reduce the storage redundancy of the spatio-temporal object data model and to improve the operation efficiency of the attribute information. The cognitive mode of multi-time scale and multi-semantic scale of attribute feature of spatio-temporal object is realized preliminarily, which provides a new idea for fine management of attribute feature of spatio-temporal object.
【作者單位】： 武漢大學(xué)測繪遙感信息工程國家重點(diǎn)實(shí)驗(yàn)室;武漢大學(xué)地球空間信息技術(shù)協(xié)同創(chuàng)新中心;
【基金】：國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目“全空間信息系統(tǒng)建模理論”(2016YFB0502300) 國家自然科學(xué)基金項(xiàng)目“基于群體用戶密集訪問模式的網(wǎng)絡(luò)地理信息并發(fā)服務(wù)方法研究”(41371370) 測繪遙感信息工程國家重點(diǎn)實(shí)驗(yàn)室專項(xiàng)科研經(jīng)費(fèi)資助
【分類號】：P208
【正文快照】： 劉朝輝1,李銳1,2*,王t熺，

本文編號：1490375