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研究生: 蔡幸芸
Tsai, Hsing-Yun
論文名稱: 探索異質學研網路中之學者足跡以實現未來合作預測
Exploring Research Footprints for Collaboration Prediction in Heterogeneous Academic Networks
指導教授: 鄧維光
Teng, Wei-Guang
學位類別: 碩士
Master
系所名稱: 工學院 - 工程科學系
Department of Engineering Science
論文出版年: 2022
畢業學年度: 110
語文別: 英文
論文頁數: 34
中文關鍵詞: 社群網路分析異質資訊網路連結預測關鍵詞共現
外文關鍵詞: social network analysis, heterogeneous information network, link prediction, keyword co-occurrence
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  • 學術研究發展日益興盛,傑出人才也隨之輩出,豐富的研究成果因應而生,然而如何在多樣的研究領域與擁有不同專業領域的學者之間,挖掘技術趨勢與人才關係,以求有效地找到值得投入的研究與合作夥伴,成為值得探討的一個議題。本研究藉由探勘不同來源的學術界開放資料,蒐集政府各部會補助之研究計畫、各學者指導之學位論文等資訊,經由識別學者身份與比對對應研究成果後,我們更可針對學者研究成果的標題、摘要與關鍵詞等進行文字前處理步驟,從而建立足跡引擎以追蹤各學者歷年於學術產出留下的研究技術名詞,並據以進行後續各項可能的分析與應用,諸如 :運用資料視覺化技術以得知熱門技術與學者社群之發展、運用資料檢索介面讓使用者可以根據指定條件找到符合目標的學者等。而在學者合作預測此一分析課題中,我們採用異質資訊網路來表現學者與研究技術之間的整體關係,以預測學者潛在合作的可能性為目標,採用社群網路分析中的連結預測技術來推薦適合的合作對象,藉由兩位學者過往是否擁有同樣研究領域的學術成果,以路徑的概念詮釋此間接關係,並從中擷取出拓撲特徵,再以監督式學習演算法建立預測模型並進行各項實驗評估。整體而言,本研究的貢獻有兩點:其一是建立了一整套的資料處理流程,以供未來 多種可能應用之研發;其二則為深入探究學者合作預測此一研究課題,而能做為橋接合作契機的重要參考 。

    With the development of science and technology, there are more and more outstanding scholars and brilliant research works. Nevertheless, it is challenging and worthwhile to explore the complex relationship among numerous scholars and their corresponding research works from various research fields. In this work, we collect information of scholars, research projects, theses and dissertations from several open data sources. Steps of identifying scholars and matching their corresponding research documents are firstly processed. Furthermore, steps of text preprocessing are then conducted on the titles, abstracts, and keywords of a research document to establish the footprint engine. Past footprints of a scholar are then carefully tracked in details. Possible applications can then be developed accordingly, including the visualization of hot topic trends and scholar communities, and the retrieval interface to help users find desired scholars. In view of the problem of collaboration prediction, we utilize heterogeneous information networks to present the overall relationship among scholars and their owned key terms. The goal is to estimate the possibility of future collaboration between two scholars. Techniques of link prediction is thus used in this work. Based on two scholars having similar footprints in the same research field, their indirect relationship is represented as a meta-path. Topological features of the meta-path are extracted to establish a prediction model using a supervised learning algorithm. Experimental studies are also conducted to evaluate the performance of our proposed approach. In summary, the contributions of this work is two-fold. Firstly, we have carefully devised a complete data flow to open the possibilities of future applications. Secondly, we have thoroughly explored the problem of collaboration prediction to bridge possible collaboration chances among scholars.

    Chapter 1 Introduction 1 1.1 Motivation and Overview 1 1.2 Contributions of This Work 3 Chapter 2 Preliminaries 4 2.1 Concept of Information Networks 4 2.2 Utilizing SNA to Identify Relationships 5 2.2.1 Research Trends 5 2.2.2 Link Prediction 7 Chapter 3 Proposed Scheme of Academic Networks 11 3.1 Design of Our Proposed Scheme 11 3.2 Footprint Engine 13 3.3 Collaboration Prediction in Academic Networks 15 Chapter 4 Prototyping and Empirical Studies 21 4.1 Data Analysis on the Academic Dataset 21 4.2 Application Examples 23 4.3 Experiment Results 24 4.4 Case Study on Different Documents 29 Chapter 5 Conclusions and Future Works 31 Bibliography 32

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