A time-based collective factorization for topic discovery and monitoring in news

Author(s):  
Carmen K. Vaca ◽  
Amin Mantrach ◽  
Alejandro Jaimes ◽  
Marco Saerens
Keyword(s):  
Author(s):  
Changri Luo ◽  
Tingting He ◽  
Xinhua Zhang

Author(s):  
Dimitrios Rafailidis ◽  
Alexandros Nanopoulos ◽  
Yannis Manolopoulos

In popular music information retrieval systems, users have the opportunity to tag musical objects to express their personal preferences, thus providing valuable insights about the formulation of user groups/communities. In this article, the authors focus on the analysis of social tagging data to reveal coherent groups characterized by their users, tags and music objects (e.g., songs and artists), which allows for the expression of discovered groups in a multi-aspect way. For each group, this study reveals the most prominent users, tags, and music objects using a generalization of the popular web-ranking concept in the social data domain. Experimenting with real data, the authors’ results show that each Tag-Aware group corresponds to a specific music topic, and additionally, a three way ranking analysis is performed inside each group. Building Tag-Aware groups is crucial to offer ways to add structure in the unstructured nature of tags.


Author(s):  
Yunfeng Xu ◽  
Hua Xu ◽  
Longxia Zhu ◽  
Hanyong Hao ◽  
Junhui Deng ◽  
...  
Keyword(s):  

Author(s):  
Fetty Fitriyanti Lubis ◽  
Yusep Rosmansyah ◽  
Suhono H. Supangkat

Despite the popularity of the Massive Open Online Courses, small-scale research has been done to understand the factors that influence the teaching-learning process through the massive online platform. Using topic modeling approach, our results show terms with prior knowledge to understand e.g.: Chuck as the instructor name. So, we proposed the topic modeling approach on helpful subjective reviews. The results show five influential factors: “learn easy excellent class program”, “python learn class easy lot”, “Program learn easy python time game”, and “learn class python time game”. Also, research results showed that the proposed method improved the perplexity score on the LDA model.


Author(s):  
Hai Yun Xu ◽  
Chao Wang ◽  
Li Jie Ru ◽  
Zeng Hui Yue ◽  
Ling Wei ◽  
...  

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