網路學習環境下所需的電子文件註記系統

Abstract

傳統畫線或在文件旁寫筆記可幫助個人記錄所學習到的知識與心得，並且使個人得以瞭解自己的學習狀況以改善學習策略。在資訊化的時代，則有賴電子註記。然而有些文件並不允許使用者修改其內容，因此無法直接在上面添加註記，在這種情境之下，常見的作法便是選擇將文件與註記分開儲存，在不修改原始文件的情況下進行註記，並且在瀏覽的時候將兩者暫時結合呈現。這解決了使用者無權編輯文件的問題，但是在文件遭到修改時容易產生註記定位上的混淆，註記很可能會呈現在不正確的位置。本研究提出一個可以支援個人與團體使用的註記系統架構，系統採用註記與文件分開儲存的模式，並且具備了同步與非同步的溝通機制，使用者可與他人即時交換文字資訊並且分享註記畫面。除此之外，本研究也設計了一種註記定位演算法，可以在文章經過修改之後將註記重新正確顯示，並且實作一個雛型系統以驗證其正確性。

Traditionally, people take notes to record what they gain from intense study. When people read, they often underline important parts of a document or write notes in the margin. These notes could help they improve learning strategy. In the information age, the handwritten notes would be replaced by digital annotations. However, users might be not allowed to change some documents. In this situation, the common solution would store the original document and annotations separately and then temporarily merge them while users wish to browse the annotated document. This approach might raise the annotation anchoring problem while the original document has been changed later. This study has proposed an annotation system framework to support personal learning and group communication (either synchronous or asynchronous). An anchoring annotation algorithm has been proposed to display annotations correctly while the original document was changed. A prototype has been implemented and its correctness has been verified.