Kapre: On-GPU Audio Preprocessing Layers for a Quick Implementation of Deep Neural Network Models with Keras

We introduce Kapre, Keras layers for audio and music signal preprocessing. Music research using deep neural networks requires a heavy and tedious preprocessing stage, for which audio processing parameters are often ignored in parameter optimisation. To solve this problem, Kapre implements time-frequency conversions, normalisation, and data augmentation as Keras layers. We report simple benchmark results, showing real-time on-GPU preprocessing adds a reasonable amount of computation.Comment: ICML 2017 machine learning for music discover

Analysis of Facebook message of automobile brands in Korean market : focus on 3 Korean domestic and 5 foreign brands

textWith a strong level of engagement through media, social networks expand communication territory in a manner that traditional media lacks the ability to, with the distinctive features of “participation” and “sharing.” With increasing engagement and penetration, social networks shed light on new channels of communication apart from traditional marketing norms and provide standards of adapting the rising power of their use. Marketing practices of Korean car markets is a typical example of integration of social media because the market contains fierce competition among brands. A difference in social media marketing appears between brands developing new products series with enough resources to do so and brands with suffering financial difficulties. Utilization of social media, one of the most powerful message delivery tools, is a barometer to estimate effective marketing implementation. Facebook messages conveyed by select automobile companies can be classified and compared to verify differences and commonalities regarding the structure of four brand equity factors raised by David Aaker: awareness, loyalty, quality and associated image. The results revealed that local brands and imported brands have focused on different equity categories and each brand has a different marketing emphasis. The imported brands are more focused on brand awareness and perceived quality as opposed to Korean local brands and their focus on loyalty. BMW delivers names of individual cars with new technology but Mercedes-Benz advertises their brand heritage in Facebook.Advertisin

Identifying Facets of Reader-Generated Online Reviews of Children’s Books Based on a Textual Analysis Approach

With the increasing popularity of social media, online reviews have become one of the primary information sources for book selection. Prior studies have analyzed online reviews, mostly in the domain of business. However, little research has examined the content of online book reviews of children’s books. Book reviews generated by book readers contain different aspects of information, such as opinions, feedback, or emotional responses, from the perspectives of readers. This study explores what aspects of the books are addressed in readers’ reviews, and then it intends to identify categorical features or facets of online book reviews of children’s books. We employed a textual analysis approach including the latent Dirichlet allocation topic modeling to analyze the content of book reviews. The results indicate that online book reviews exhibit different facets of the books, which can be used as access points by potential readers to help them select relevant books