Reducing Cluster Overlap in Movie Recommendations with IKSOM and Silhouette Clustering

Saurabh Sharma; Ghanshyam Dubey; Harish Shakya

doi:10.52756/ijerr.2024.v42.015

Authors

Saurabh Sharma Department of Computer Science and Engineering, Amity University, Gwalior, Madhya Pradesh, India https://orcid.org/0000-0002-0090-6043
Ghanshyam Dubey Department of Computer Science and Engineering, Amity University, Gwalior, Madhya Pradesh, India https://orcid.org/0000-0003-0868-4219
Harish Shakya Department of Artificial Intelligence & Machine Learning, Manipal University, Jaipur, Rajasthan, India https://orcid.org/0000-0002-5401-3507

DOI:

https://doi.org/10.52756/ijerr.2024.v42.015

Keywords:

Cluster Overlap Reduction, Hybrid Clustering Models, IKSOM (Improved Kohonen Self-Organizing Maps), Movie Recommendation Systems, Recommendation Accuracy, Silhouette Clustering

Abstract

The exponential growth of online material requires the implementation of effective and precise recommendation systems in order to optimize the user experience. Nevertheless, conventional approaches frequently encounter problems such as cluster overlap, which reduces the accuracy of suggestions. This paper presents a new method for minimising the overlap between clusters in movie recommendation systems. It achieves this by combining Improved Kohonen Self-Organizing Maps (IKSOM) with Silhouette Clustering. The proposed method utilises IKSOM to efficiently represent high-dimensional user-item interactions in a two-dimensional space, enabling the formation of distinct and meaningful clusters. Subsequently, Silhouette Clustering is utilised to enhance the separation and cohesion of clusters, hence reducing overlap. The experimental findings show that proposed hybrid model works much better than the baseline techniques, obtaining an RMSE of 0.423 and MAE of 0.216. Additionally, it improves precision (93.6%), recall (94.2%) and F1-score (93.4%). Additionally, the proposed technique demonstrates a high level of accuracy (97.3%) with a precision rate of 95.8%. These results emphasise the method's efficacy in minimising errors and enhancing the overall performance of the recommendation system. The results indicate that combining IKSOM with Silhouette Clustering can improve the precision and dependability of movie recommendation systems by resolving cluster overlap and offering more individualised user experiences. Subsequent research will investigate the implementation of this method in different fields and the integration of supplementary contextual information to enhance the accuracy of recommendations.

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