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arXiv 2408.11565cs.IR
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哦,行为!音乐推荐系统中反馈循环造成的国家表征动态

Oh, Behave! Country Representation Dynamics Created by Feedback Loops in Music Recommender Systems

Oleg Lesota, Jonas Geiger, Max Walder, Dominik Kowald, Markus Schedl

AI总结:

本研究通过LFM-2b数据集模拟反馈循环,发现多数推荐模型减少本地音乐占比,且流行度校准最优的ItemKNN国家校准最差,代表性不足国家用户受影响最大。

摘要:

近期研究表明,音乐推荐系统倾向于不成比例地频繁推荐训练数据中占主导地位的国家(尤其是美国)的音乐。然而,反馈循环在多大程度上影响这种不平衡的动态仍不清楚。在本工作中,我们调查了用户画像和推荐中本地(即特定国家)音乐与美国制作音乐的表征动态。为此,我们使用标准化的LFM-2b数据集进行了反馈循环模拟研究。结果表明,大多数被调查的推荐模型降低了推荐中本地艺术家音乐的比例。此外,我们发现保持美国和本地音乐平均比例的模型并不一定提供国家校准的推荐。我们还研究了流行度校准,并惊讶地发现,我们研究中流行度校准最好的模型(ItemKNN)提供了最差的国家校准推荐。另外,来自代表性不足国家(如芬兰)的用户,长期来看,受其本地音乐在推荐中代表性不足的影响最大。

英文摘要:

Recent work suggests that music recommender systems are prone to disproportionally frequent recommendations of music from countries more prominently represented in the training data, notably the US. However, it remains unclear to what extent feedback loops in music recommendation influence the dynamics of such imbalance. In this work, we investigate the dynamics of representation of local (i.e., country-specific) and US-produced music in user profiles and recommendations. To this end, we conduct a feedback loop simulation study using the standardized LFM-2b dataset. The results suggest that most of the investigated recommendation models decrease the proportion of music from local artists in their recommendations. Furthermore, we find that models preserving average proportions of US and local music do not necessarily provide country-calibrated recommendations. We also look into popularity calibration and, surprisingly, find that the most popularity-calibrated model in our study (ItemKNN) provides the least country-calibrated recommendations. In addition, users from less represented countries (e.g., Finland) are, in the long term, most affected by the under-representation of their local music in recommendations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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