JB

J.J. Boon

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Bachelor thesis (2025) - J.J. Boon, E. Isufi, A. Cavallo, C. Liu, K.A. Hildebrandt
Graph Neural Networks (GNNs) are an effective architecture for implementing collaborative filtering-based recommender systems. This paper evaluates the performance and computational complexity of precision matrix-based VNNs as a collaborative filter on the MovieLens-100K dataset. Results show the estimated precision matrix contains a high amount of noise when calculated from sparse data, which impacts the performance of the model. After sparsifying the precision matrix, the performance and computational complexity improved significantly. ...