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| Content Provider | IET Digital Library |
|---|---|
| Author | Ma, Yuan Yuan Zhang, Heng Ru Xu, Yuan Yuan Min, Fan Gao, Lei |
| Abstract | The matrix factorisation approach computes a low-rank approximation of the incomplete user-item rating matrix. Existing approaches suffer from under-fitting due to the use of global information for all users and items. In this study, the authors propose a three-way recommendation model that integrates global and local information. This new model has a number of main aspects. The first is rating prediction with global and local information. A clustering and two matrix factorisation algorithms are employed for this purpose. The second is the computation of recommendation thresholds based on the decision-theoretic rough set model. Misclassification and promotion costs are considered simultaneously to build the cost matrix. The last is the determination of the recommender actions based on the prediction and thresholds. Experimental results on the well-known datasets show that authors’ proposed model improves recommendation quality in terms of average cost. |
| Starting Page | 1397 |
| Ending Page | 1401 |
| Page Count | 5 |
| Volume Number | 2018 |
| e-ISSN | 20513305 |
| Issue Number | Issue 16, Nov (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2018/16 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8300 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2018-08-16 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Approximation Theory Combinatorial Mathematics Cost Matrix Decision Theory Decision-theoretic Rough Set Model Global Information Incomplete User-item Rating Matrix Information Network Interpolation And Function Approximation Linear Algebra Local Information Low-rank Approximation Matrix Decomposition Matrix Factorisation Algorithm Matrix Factorisation Approach Numerical Analysis Rating Prediction Recommendation Quality Recommendation Thresholds Recommender Actions Recommender System Rough Set Theory Three-way Recommendation Model |
| Content Type | Text |
| Resource Type | Article |
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