【正文】 ]。許多 RSS 軟件運(yùn)行在 Web 瀏覽器內(nèi)部，而另一些則是獨(dú)立的程序。作為中國(guó) RSS 技術(shù)和服務(wù)的第一品牌，從 2020 年 4 月推出以來(lái)，看天下網(wǎng)絡(luò)資訊瀏覽器總下載人數(shù)突破 30 萬(wàn)。 RSS 技術(shù)主要應(yīng)用在以下幾個(gè)方面 [3]： 1． 改變網(wǎng)民的瀏覽方式 在今天，人們已經(jīng)習(xí)慣了打開(kāi) IE，通過(guò)門戶網(wǎng)站、搜索引擎獲取新聞資訊。另外，所鏈接的網(wǎng)頁(yè)如果有所更新，將立即在主文章架構(gòu)下得到反映，并主動(dòng)更新到訂閱者的計(jì)算機(jī)中。 （ 1） 解決內(nèi)容同質(zhì)化。 （ 3） 流量損失和訪問(wèn)減少。但 RSS 在新聞網(wǎng)站的使用才剛剛開(kāi)始，當(dāng)簡(jiǎn)單的信息收 集與分類工作已被機(jī)器承擔(dān)時(shí)，網(wǎng)絡(luò)新聞業(yè)務(wù)的模式將向何方發(fā)展，這是所有新聞網(wǎng)站都不可回避的問(wèn)題。 目前 RSS 已經(jīng)在網(wǎng)站的 最新消息方面得到了廣泛的采用， RSS feed 已經(jīng)成為網(wǎng)絡(luò)上重要資源，免費(fèi)的開(kāi)放的 RSS 搜索引擎和 RSS 桌面聚合工具也已經(jīng)出現(xiàn)。目前，絕大多數(shù)的國(guó)外大型新聞網(wǎng)站和國(guó)內(nèi)的新浪新華網(wǎng)等網(wǎng)站都提供 RSS 新聞?lì)l道。 （ 2）對(duì)頻道進(jìn)行管理。 工具欄：新建頻道，添加到我的頻道，刪除頻道，刷新所選頻道，刷新全部頻道，系統(tǒng)設(shè)置，搜索，刪除新聞項(xiàng)。 瀏覽新聞項(xiàng)：?jiǎn)螕粼O(shè)置（單擊新聞項(xiàng)瀏覽描述文字內(nèi)容，如描述文字為空，則直接瀏覽詳細(xì)內(nèi)容頁(yè)面；單擊新聞項(xiàng)直接瀏覽詳細(xì)內(nèi)容頁(yè)面）。 因此，在開(kāi)發(fā)本軟件時(shí)，在實(shí)現(xiàn)基本的功能外，還應(yīng)解決兩方面關(guān)鍵問(wèn)題。在總體框架上，基本采用“看天下”新聞閱讀器的模式。 本文獻(xiàn) 被用于為讀者提供有效地使用 RDF 的基礎(chǔ)知識(shí) 。RDF提供表達(dá)這些數(shù)據(jù)通常的架構(gòu)，因此它能在沒(méi)有改變?cè)獾纳暾?qǐng)之間被交換。然而，不像傳統(tǒng)的超媒體， RDF URIs 能涉及任何的可以確認(rèn)的事物 ,包括不可能是直接可以在網(wǎng)絡(luò)上取回的事物。因此 ,熟悉較舊規(guī)格的讀者 , 和由 于較早的個(gè)別指導(dǎo)和以他們?yōu)榛A(chǔ)的介紹文章 ,應(yīng)該注意在現(xiàn)在的規(guī)格和那些早先的文件之間可能有不同。換言之 ,通常的 namespace URLref將會(huì)因?yàn)橐粋€(gè)詞匯的所有術(shù)語(yǔ)而被選擇 , 有代表性地是一個(gè) URIref 是在任何人正在定義詞匯的控制之下。一個(gè)特別的組織 ,程序 ,工具 ,等等都能定義一個(gè)對(duì)它來(lái)說(shuō)是重要的詞匯 ,以來(lái)自若干的其他字匯的 URIrefs 作為它的詞匯的部份。這用通常的前綴形成一組 URIrefs 。資訊科技不會(huì)簡(jiǎn)單的跟任何特別意義的三倍數(shù)聯(lián)合因此詞匯開(kāi)發(fā)者可能和 URIref聯(lián)合。（物體節(jié)的 URIrefs可能有時(shí)恐怕最好被寫如屬性價(jià)值）文字的節(jié)（總是反對(duì)節(jié)）變成元素本文內(nèi)容或?qū)傩詢r(jià)值。一個(gè)空白的節(jié)點(diǎn)標(biāo)識(shí)符服務(wù)在特別的 RDF/XML里面識(shí)別一個(gè)空白的節(jié)點(diǎn)文件。）。 時(shí)常有需要描述群體的事物 :例如 ,說(shuō)共同創(chuàng)作了一本書被一些作家 ,或列出課程的學(xué)生 , 或列出一個(gè)里的軟件組件。s preferences for information delivery. RDF is intended for situations in which this information needs to be processed by applications, rather than being only displayed to people. RDF provides a mon framework for expressing this information so it can be exchanged between applications without loss of meaning. Since it is a mon framework, application designers can leverage the availability of mon RDF parsers and processing tools. The ability to exchange information between different applications means that the information may be made available to applications other than those for which it was originally created. RDF is based on the idea of identifying things using Web identifiers (called Uniform Resource Identifiers, or URIs), and describing resources in terms of simple properties and property values. This enables RDF to represent simple statements about resources as a graph of nodes and arcs representing the resources, and their properties and values. Note that this RDF/XML also contains URIs, as well as properties like mailbox and fullName (in an abbreviated form), and their respective values , and Eric Miller. Like HTML, this RDF/XML is machine processable and, using URIs, can link pieces of information across the Web. However, unlike conventional hypertext, RDF URIs can refer to any identifiable thing, including things that may not be directly retrievable on the Web (such as the person Eric Miller). The result is that in addition to describing such things as Web pages, RDF can also describe cars, businesses, people, news events, etc. In addition, RDF properties themselves have URIs, to precisely identify the relationships that exist between the linked items. This Primer is intended to provide an introduction to RDF and describe some existing RDF applications, to help information system designers and application developers understand the features of RDF and how to use them. In particular, the Primer is intended to answer such questions as: What does RDF look like? What information can RDF represent? How is RDF information created, accessed, and processed? How can existing information be bined with RDF? The Primer is a nonnormative document, which means that it does not provide a definitive specification of RDF. The examples and other explanatory material in the Primer are provided to help readers understand RDF, but they may not always provide definitive or fullyplete answers. In such cases, the relevant normative parts of the RDF specification should be consulted. To help in doing this, the Primer describes the roles these other documents play in the plete specification of RDF, and provides links pointing to the relevant parts of the normative specifications, at appropriate places in the discussion. It should also be noted that these RDF documents update and clarify previouslypublished RDF specifications, the Resource Description Framework (RDF) Model and Syntax Specification [RDFMS] and the Resource Description Framework (RDF) Schema Specification [RDFS]. As a result, there have been some changes in terminology, syntax, and concepts. This Primer reflects the newer set of RDF specifications given in the bulleted list of RDF documents cited above. Hence, readers familiar with the older specifications, and with earlier tutorial and introductory articles based on them, should be aware that there may be differences between the current specifications and those previous documents. The RDF Issue Tracking document [RDFISSUE] can be consulted for a list of issues raised concerning the previous RDF specifications, and their resolution in the current specifications. RDF is based on the idea that the things being described have properties which have values, and that resources can be described by making statements, similar to those above, that specify those properties and values. RDF uses a particular terminology for talking about the various parts of statements. Specifically, the part that identifies the thing the statement is about (the Web page in this example) is called the subject. The part that identifies the property or characteristic of the subject that the statement specifies (creator, creationdate, or language in these examples) is called the predicate, and the part that identifies the value of that property is called the object. So, taking the English statement 3. The RDF Model Since RDF uses URIrefs instead of words to name things in statements, RDF refers to a set of URIrefs (particularly a set intended for a specific purpose) as a vocabulary. Often, the URIrefs in such vocabularies are anized so