無所不在學習的資源分享機制

Abstract

隨著網路科技的快速發展，學習方法日益多元，無所不在學習已經變得越來越盛行。在真實的學習環境中，人們可以拿著可持的學習裝置，透過無線網路的傳輸，在任何時間及地點存取學習資源，然而，開發所需的學習資源來適合不同的學習需求很耗費時間及成本。因此，學習資源的分享及再使用是一個關鍵的議題，這當中又包含兩個主要問題：資源索引及資源檢索。 本文中我們提出一個資源分享的機制，來幫助學習者在無所不在的學習環境中學習。這個機制包含網路為主的資源分享及社交網路為主的資源分享；網路為主的資源分享包含內容及多媒體分享，社交網路為主的資源分享包含註解分享及專家搜尋。 在本文中，我們將以詩詞為例，來評估無所不在學習環境中的資源分享機制。首先，學習資源會被收集、整理及建立索引；接著，學習資源就可根據學習者的情境資訊等需求而被檢索。同時，學習者也可以透過社交網路來搜尋專家以得到適當的協助。 為了驗證本研究的成果，除了實際開發系統，並進行相關實驗。由實驗分析的結果顯示，本文提出的方法可以有效且快速地提供資源的存取。問卷調查結果也顯示，使用者認為這個機制有助於取得適合的資源。

With the rapid growth of network technologies, ubiquitous learning becomes popular than ever before. It is possible for people to learn by using portable learning devices with wireless communication in an authentic learning environment. Learners can access learning resources anywhere and anytime. However, it is time-consuming and cost-consuming to construct learning resources to fit in with different learning needs. Learning resource sharing and reusing becomes a critical issue, which consists of two problems: resource indexing, and resource retrieval. In this dissertation, we propose a resource sharing mechanism so as to facilitate learning for students in a u-learning environment. The mechanism contains Web-based resource sharing and social-network-based resource sharing. Web-based resource sharing includes learning content sharing and learning multimedia sharing. Social-network-based resource sharing includes learning annotation sharing and remote expert finding. To evaluate this resource sharing mechanism, we take Chinese poetry as an example. First, learning resources (e.g. e-text, multimedia, and annotation) are collected, organized and indexed. Then, learning resources are retrieved based on user contexts. In addition, learners can find remote experts through social networks for assisting them at runtime. The aforementioned methods are implemented, and experiments are conducted. The results show that the proposed method is efficient and effective. Surveys of user opinions also show that the proposed approach can assist learners to retrieve appropriate resources.