Title Page

Contents

Abstract 8

Chapter 1. Introduction 10

Chapter 2. Literature Review 13

2.1. Network Analysis of collaborative research 13

2.2. Global Collaboration and Related Recommendations in trials 15

Chapter 3. Study Methodology 18

3.1. Data Description 18

3.2. Preprocessing 19

Chapter 4. Network Construction 20

4.1. Graph Generation 20

4.2. Baseline Models 22

4.3. Proposed Model 23

4.3.1. General Construction 24

4.3.2. Relation Extraction 25

4.3.3. Recommendation Generation 25

4.3.4. Evaluation Metrics 27

Chapter 5. Results 29

5.1. Network Analysis 29

5.2. Model Performance 30

Chapter 6. Discussion and Conclusion 35

References 39

논문요약 43

Table1. Performance evaluations (%) with diabetes clinical trials 32

Table2. Performance evaluations (%) with stroke clinical trials 33

Figure 1. Example of the research collaboration network model 21

Figure 2. Statistics of extra attribute in Diabetes and Stroke trials 24

Figure 3. Overall recommendation procedures 24

Figure 4. Sub-Graph Generated of Diabetes clinical trials 30

Figure 5. Accuracy@K in Diabetes and Stroke 34