arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1206.6441cs.LGcs.IRstat.ML
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旋律序列的主题模型

A Topic Model for Melodic Sequences

School of Informatics, University of Edinburgh(爱丁堡大学信息学院)

Athina Spiliopoulou, Amos Storkey

摘要:

我们研究的问题,学习的概率模型旋律直接从音乐序列属于同一流派。这是一项具有挑战性的任务,因为人们不仅需要捕捉音乐中丰富的时间结构,而且还需要捕捉不同音乐成分之间复杂的统计依赖关系。为了解决这个问题,我们引入了可变语法主题模型,它耦合了潜在的主题形式主义与上下文信息的系统模型。我们评估该模型的下一步预测。此外,我们提出了一种新的模型评估方法,我们直接比较模型样本与数据序列使用的最大均值离散的字符串内核,以评估如何接近模型分布的数据分布。我们表明,该模型具有最高的性能下的两个评价指标相比,LDA,主题二元模型和相关的非主题模型。

英文摘要:

We examine the problem of learning a probabilistic model for melody directly from musical sequences belonging to the same genre. This is a challenging task as one needs to capture not only the rich temporal structure evident in music, but also the complex statistical dependencies among different music components. To address this problem we introduce the Variable-gram Topic Model, which couples the latent topic formalism with a systematic model for contextual information. We evaluate the model on next-step prediction. Additionally, we present a novel way of model evaluation, where we directly compare model samples with data sequences using the Maximum Mean Discrepancy of string kernels, to assess how close is the model distribution to the data distribution. We show that the model has the highest performance under both evaluation measures when compared to LDA, the Topic Bigram and related non-topic models.

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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