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A NOVEL LATENT FACTOR MODEL FOR RECOMMENDER SYSTEM

机译:推荐人系统的最新潜在因素模型

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Matrix factorization (MF) has evolved as one of the better practice to handle sparse data in field of recommender systems. Funk singular value decomposition (SVD) is a variant of MF that exists as state-of-the-art method that enabled winning the Netflix prize competition. The method is widely used with modifications in present day research in field of recommender systems. With the potential of data points to grow at very high velocity, it is prudent to devise newer methods that can handle such data accurately as well as efficiently than Funk-SVD in the context of recommender system. In view of the growing data points, I propose a latent factor model that caters to both accuracy and efficiency by reducing the number of latent features of either users or items making it less complex than Funk-SVD, where latent features of both users and items are equal and often larger. A comprehensive empirical evaluation of accuracy on two publicly available, amazon and ml-100 k datasets reveals the comparable accuracy and lesser complexity of proposed methods than Funk-SVD.
机译:矩阵分解(MF)已经发展成为在推荐系统领域中处理稀疏数据的更好实践之一。 Funk奇异值分解(SVD)是MF的一种变体,它以能够在Netflix竞赛中获胜的最先进方法而存在。该方法在推荐系统领域中的当今研究中被广泛使用并经过修改。由于数据点具有以极高的速度增长的潜力,因此在推荐系统的背景下,谨慎地设计出比Funk-SVD能够更准确,更有效地处理此类数据的更新方法。鉴于不断增长的数据点,我提出了一个潜在因素模型,该模型通过减少用户或项目的潜在特征的数量来使其兼顾准确性和效率,从而使其不如Funk-SVD那样复杂,在Funk-SVD中,用户和项目的潜在特征相等并且通常更大。在两个可公开获得的亚马逊和ml-100 k数据集上,对准确性进行了全面的经验评估,结果表明,与Funk-SVD相比,所提方法具有可比的准确性和较低的复杂性。

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