本文關(guān)鍵詞：基于結(jié)構(gòu)和屬性特征的政府開(kāi)放數(shù)據(jù)檢索方法研究　出處：《情報(bào)雜志》2017年05期 　論文類型：期刊論文

  更多相關(guān)文章： 政府開(kāi)放數(shù)據(jù) 數(shù)據(jù)檢索 特征設(shè)計(jì) 特征排序 倒排索引

【摘要】：[目的/意義]排序是信息檢索中的一個(gè)重要環(huán)節(jié),其核心是如何利用特征構(gòu)建更為有效的排序函數(shù)。目前已提出了多種文檔、網(wǎng)頁(yè)特征用于構(gòu)建排序函數(shù),但由于檢索對(duì)象上的差異,針對(duì)非結(jié)構(gòu)化信息檢索對(duì)象的特征難以有效地為政府開(kāi)放數(shù)據(jù)的檢索排序進(jìn)行服務(wù)。[方法/過(guò)程]針對(duì)這一問(wèn)題,提出了一種基于結(jié)構(gòu)和屬性特征的政府開(kāi)放數(shù)據(jù)檢索方法,對(duì)政府開(kāi)放數(shù)據(jù)檢索對(duì)象的特點(diǎn)進(jìn)行分析,設(shè)計(jì)出盡可能全面反映檢索對(duì)象的特征,利用新特征學(xué)習(xí)排序函數(shù),并構(gòu)建二維偏移量的倒排索引對(duì)選擇的特征進(jìn)行索引。[結(jié)果/結(jié)論]實(shí)驗(yàn)結(jié)果顯示,基于結(jié)構(gòu)和屬性特征的政府開(kāi)放數(shù)據(jù)檢索性能優(yōu)于傳統(tǒng)的本地檢索方法。
[Abstract]:[Objective] sort / meaning is an important link in information retrieval, its core is how to use the features to build a more effective ranking functions. At present a variety of documents, web features used to construct the sort function, but because of differences in retrieval object, according to the characteristics of unstructured information retrieval object to effectively open government data retrieval service. Sequencing method / process to solve this problem, this paper presents a structure and attribute of open government data retrieval method based on the characteristics of open government data retrieval object analysis, designpossibly fully reflecting the characteristics of search objects, using the new features of learning ranking functions, index results. / characteristics and build a two-dimensional offset inverted index to choose the conclusion] the experimental results show that the government open data structure and attribute based retrieval It is superior to the traditional local retrieval method.

【作者單位】： 華南理工大學(xué)經(jīng)濟(jì)與貿(mào)易學(xué)院;
【基金】：國(guó)家社會(huì)科學(xué)基金項(xiàng)目“基于關(guān)聯(lián)數(shù)據(jù)的政府?dāng)?shù)據(jù)開(kāi)放研究”(編號(hào):14BTQ009)研究成果之一
【分類號(hào)】：D035;G252.7
【正文快照】： 引用格式趙龍文,莫荔媛,黃躍萍.基于結(jié)構(gòu)和屬性特征的政府開(kāi)放數(shù)據(jù)檢索方法研究[J].情報(bào)雜志,2017,36(5):148-152,123.0前言“開(kāi)放政府?dāng)?shù)據(jù)”(Open Government Data)是大數(shù)據(jù)時(shí)代下的一個(gè)必然趨勢(shì)。截至2016年4月,美國(guó)Data.Gov和英國(guó)Data.gov.uk上公開(kāi)的數(shù)據(jù)集分別高達(dá)24.1154，

本文編號(hào)：1390134