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COCOON CORE: CO-author REcommendations Based on Betweenness Centrality and Interest Similarity

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Recommender Systems for Technology Enhanced Learning

Abstract

When researchers are to write a new article, they often seek co-authors who are knowledgeable on the article’s subject. However, they also strive for acceptance of their article. Based on this otherwise intuitive process, the current article presents the COCOON CORE tool that recommends candidate co-authors based on like-mindedness and power. Like-mindedness ensures that co-authors share a common ground, which is necessary for seamless cooperation. Powerful co-authors foster adoption of an article’s research idea by the community. Two experiments were conducted, one focusing on the perceived quality of the recommendations that COCOON CORE generates and one focusing on the usability of COCOON CORE. Results indicate that participants perceive the recommendations moderately positively. Particularly, they value the recommendations that focus fully on finding influential peers and the recommendation in which they themselves can adjust the balance between finding influential peers and like-minded peers. Also, the usability of COCOON CORE is perceived to be moderately good.

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Acknowledgments

The authors thank Dr. Lora Aroyo from the VU University Amsterdam for her insightful comments during the design and implementation phases of COCOON CORE.

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Correspondence to Rory L. L. Sie .

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Appendices

Appendix A: Questions Regarding Quality of Recommendations

  1. 1a.

    Individual Recommendation: How do you value the recommendation that is generated if the slider for influence is set to 100?

  2. 1b.

    Individual Recommendation: How do you value the recommendation that is generated if the slider for interest similarity is set to 100?

  3. 1c.

    Individual Recommendation: How do you value the recommendation that is generated if you control the sliders yourself?

  4. 2a.

    Default User Recommendation: How do you value the recommendation that is generated if the slider for influence is set to 100?

  5. 2b.

    Default User Recommendation: How do you value the recommendation that is generated if the slider for interest similarity is set to 100?

  6. 2c.

    Default User Recommendation: How do you value the recommendation that is generated if you control the sliders yourself?

Appendix B: SUS Questionnaire

  1. 1.

    I think that I would like to use this system frequently.

  2. 2.

    I found the system unnecessarily complex.

  3. 3.

    I thought the system was easy to use.

  4. 4.

    I think that I would need the support of a technical person to be able to use this system.

  5. 5.

    I found the various functions in this system were well integrated.

  6. 6.

    I thought there was too much inconsistency in this system.

  7. 7.

    I would imagine that most people would learn to use this system very quickly.

  8. 8.

    I found the system very cumbersome to use.

  9. 9.

    I felt very confident using the system.

  10. 10.

    I needed to learn a lot of things before I could get going with this system.

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Sie, R.L.L., van Engelen, B.J., Bitter-Rijpkema, M., Sloep, P.B. (2014). COCOON CORE: CO-author REcommendations Based on Betweenness Centrality and Interest Similarity. In: Manouselis, N., Drachsler, H., Verbert, K., Santos, O. (eds) Recommender Systems for Technology Enhanced Learning. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-0530-0_13

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  • DOI: https://doi.org/10.1007/978-1-4939-0530-0_13

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  • Online ISBN: 978-1-4939-0530-0

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