کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4943031 | 1437614 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A recommender system based on collaborative filtering using ontology and dimensionality reduction techniques
ترجمه فارسی عنوان
یک سیستم پیشنهادی مبتنی بر فیلتر کردن مشارکتی با استفاده از تکنولوژی های آنتولوژی و کاهش ابعاد
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کلمات کلیدی
سیستم توصیهگر؛ آنتولوژی ؛ خوشه بندی؛ کاهش ابعاد؛ مقیاس پذیری؛ انعطاف پذیری
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
هوش مصنوعی
چکیده انگلیسی
Improving the efficiency of methods has been a big challenge in recommender systems. It has been also important to consider the trade-off between the accuracy and the computation time in recommending the items by the recommender systems as they need to produce the recommendations accurately and meanwhile in real-time. In this regard, this research develops a new hybrid recommendation method based on Collaborative Filtering (CF) approaches. Accordingly, in this research we solve two main drawbacks of recommender systems, sparsity and scalability, using dimensionality reduction and ontology techniques. Then, we use ontology to improve the accuracy of recommendations in CF part. In the CF part, we also use a dimensionality reduction technique, Singular Value Decomposition (SVD), to find the most similar items and users in each cluster of items and users which can significantly improve the scalability of the recommendation method. We evaluate the method on two real-world datasets to show its effectiveness and compare the results with the results of methods in the literature. The results showed that our method is effective in improving the sparsity and scalability problems in CF.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Expert Systems with Applications - Volume 92, February 2018, Pages 507-520
Journal: Expert Systems with Applications - Volume 92, February 2018, Pages 507-520
نویسندگان
Mehrbakhsh Nilashi, Othman Ibrahim, Karamollah Bagherifard,