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Supplemental Information

Additional Information

Competing Interests

Loc Nguyen was Director of Sunflower Soft Company (HUONG DUONG PROGRAMMING CO. LTD) at the time of this research. The authors declare that they have no competing interests.

Author Contributions

Loc Nguyen conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, performed the computation work, reviewed drafts of the paper.

Minh-Phung T. Do conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

Editorial Board of International Journal of Applied Mathematics and Machine Learning, Scientific Advances Publishers.

Patent Disclosures

The following patent dependencies were disclosed by the authors:

We used the Movielens datasets owned by GroupLens for making experiments.

Data Deposition

The following information was supplied regarding data availability:

I am currently using code repository BitBucket available at https://ngphloc@bitbucket.org/sunflowersoft/hudup-ext.git

Funding

This work was supported by Sunflower Soft Company (Huong Duong Co. Ltd), Vietnam. The Ho Chi Minh University of Information Technology supported the co-author Minh-Phung T. Do to work with me in this research.


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