數(shù)字地球的關(guān)鍵技術(shù)-語義網(wǎng)和owl簡介-在線瀏覽
2025-04-04 08:55本頁面
【正文】 北京大學(xué)遙感與 GIS研究所 2023年 11月 09日 概述 ? 語義網(wǎng)簡介 ? OWL簡介 ? 實例演示（ Prot233。g233。 We Can Work It Out when the phone rang. When Pete answered, his phone turned the sound down by sending a message to all the other local devices that had a volume control. His sister, Lucy, was on the line from the doctor39。m going to have my agent set up the appointments. Pete immediately agreed to share the chauffeuring. From TBL’ s Scientific American Article: The Semantic Web, 2023 Tim BernersLee講故事 ? At the doctor39。s prescribed treatment from the doctor39。s insurance within a 20mile radius of her home and with a rating of excellent or very good on trusted rating services. It then began trying to find a match between available appointment times (supplied by the agents of individual providers through their Web sites) and Pete39。s busy schedules. ? （ The emphasized keywords indicate terms whose semantics, or meaning, were defined for the agent through the Semantic Web.） From TBL’ s Scientific American Article: The Semantic Web, 2023 Tim BernersLee講故事 ? In a few minutes the agent presented them with a plan. Pete didn39。s place, and he39。s agent, having plete trust in Pete39。s list failing to include this provider under physical therapists: Service type and insurance plan status securely verified by other means, the agent reassured him. (Details?) ? Lucy registered her assent at about the same moment Pete was muttering, Spare me the details, and it was all set. (Of course, Pete couldn39。t on the proper list.) From TBL’ s Scientific American Article: The Semantic Web, 2023 語義網(wǎng)的協(xié)議 ? XML – 標注的語法 ? XML Schema – 標注結(jié)構(gòu)和用詞的限制 ? RDF – 資源（對象）的數(shù)據(jù)模型（實體關(guān)系） ? RDF Schema – 描述實體和關(guān)系的詞匯定義 ? OWL – 對 RDF Schema的擴展 – 描述邏輯（ DL）的 Web化 譯自 Ivan Herman, W3C的 SW QA 語義網(wǎng)與 AI的關(guān)系 ? 語義網(wǎng) – 采取“主語＋謂語＋賓語”的形式 – 一種表達元數(shù)據(jù)的簡單方式 – 結(jié)構(gòu)化和定義名詞的方法 – 有限推理 – 與應(yīng)用相關(guān)的規(guī)則 – 模糊邏輯 ? AI還包括 – 聯(lián)想 – 空間推理 – 圖像，文字識別 – 復(fù)雜的決策流程 譯自 Ivan Herman, W3C的 SW QA 所以 SW只是對 AI的一小部分在 Web應(yīng)用中的擴展 語義網(wǎng)與 A
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