Heinrich, Bernd and Hopf, Marcus and Lohninger, Daniel and Schiller, Alexander and Szubartowicz, Michael (2020) Something's Missing? A Procedure for Extending Item Content Data Sets in the Context of Recommender Systems. INFORMATION SYSTEMS FRONTIERS. ISSN 1387-3326, 1572-9419
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The rapid development of e-commerce has led to a swiftly increasing number of competing providers in electronic markets, which maintain their own, individual data describing the offered items. Recommender systems are popular and powerful tools relying on this data to guide users to their individually best item choice. Literature suggests that data quality of item content data has substantial influence on recommendation quality. Thereby, the dimension completeness is expected to be particularly important. Herein resides a considerable chance to improve recommendation quality by increasing completeness via extending an item content data set with an additional data set of the same domain. This paper therefore proposes a procedure for such a systematic data extension and analyzes effects of the procedure regarding items, content and users based on real-world data sets from four leading web portals. The evaluation results suggest that the proposed procedure is indeed effective in enabling improved recommendation quality.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MATRIX FACTORIZATION TECHNIQUES; FEATURE-SELECTION; DATA QUALITY; IMPACT; Completeness; Data extension; Data quality; Recommender system |
| Subjects: | 000 Computer science, information & general works > 004 Computer science 300 Social sciences > 330 Economics |
| Divisions: | Business, Economics and Information Systems > Institut für Wirtschaftsinformatik > Lehrstuhl für Wirtschaftsinformatik II (Prof. Dr. Bernd Heinrich) |
| Depositing User: | Petra Gürster |
| Date Deposited: | 20 Apr 2021 12:32 |
| Last Modified: | 20 Apr 2021 12:32 |
| URI: | https://pred.uni-regensburg.de/id/eprint/43525 |
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