Results 51 to 60 of about 1,394,211 (120)
A non-parametric mixture model for topic modeling over time [PDF]
arXiv, 2012 A single, stationary topic model such as latent Dirichlet allocation is inappropriate for modeling corpora that span long time periods, as the popularity of topics is likely to change over time. A number of models that incorporate time have been proposed, but in general they either exhibit limited forms of temporal variation, or require computationally
arxiv
مدیریت اطلاعات سلامت, 2019 Introduction: Studying the growth of scientific outputs in different subject areas can be one of the foundations of scientific policymaking in that field.
Sornaz Shadi +2 more
doaj +1 more source
Discourse Behavior of Older Adults Interacting With a Dialogue Agent Competent in Multiple Topics [PDF]
arXiv, 2019 We present some results concerning the dialogue behavior and inferred sentiment of a group of older adults interacting with a computer-based avatar. Our avatar is unique in its ability to hold natural dialogues on a wide range of everyday topics---27 topics in three groups, developed with the help of gerontologists.
arxiv
Maximum Value Matters: Finding Hot Topics in Scholarly Fields [PDF]
arXiv, 2017 Finding hot topics in scholarly fields can help researchers to keep up with the latest concepts, trends, and inventions in their field of interest. Due to the rarity of complete large-scale scholarly data, earlier studies target this problem based on manual topic extraction from a limited number of domains, with their focus solely on a single feature ...
arxiv
Topic Similarity Networks: Visual Analytics for Large Document Sets [PDF]
arXiv, 2014 We investigate ways in which to improve the interpretability of LDA topic models by better analyzing and visualizing their outputs. We focus on examining what we refer to as topic similarity networks: graphs in which nodes represent latent topics in text collections and links represent similarity among topics.
arxiv
Detecting Topic and Sentiment Dynamics Due to COVID-19 Pandemic Using Social Media [PDF]
arXiv, 2020 The outbreak of the novel Coronavirus Disease (COVID-19) has greatly influenced people's daily lives across the globe. Emergent measures and policies (e.g., lockdown, social distancing) have been taken by governments to combat this highly infectious disease.
arxiv
The First Fifty Years of the Journal Acta Stomatologica Croatica (1966 - 2016): Citation Analysis
Acta Stomatologica Croatica, 2018 Acta Stomatologica Croatica (ASCRO) citation analysis was made on the occasion of fifty years of publishing the journal (1966 to 2016). The aim of the study was to determine the impact of the changes that have been occurring over the last ten years on ...
Vesna Borić, Lidija Štefić
doaj +1 more source
Analysis and Forecasting of Trending Topics in Online Media Streams [PDF]
arXiv, 2014 Among the vast information available on the web, social media streams capture what people currently pay attention to and how they feel about certain topics. Awareness of such trending topics plays a crucial role in multimedia systems such as trend aware recommendation and automatic vocabulary selection for video concept detection systems.
arxiv
Temporal Identification of Latent Communities on Twitter [PDF]
arXiv, 2015 User communities in social networks are usually identified by considering explicit structural social connections between users. While such communities can reveal important information about their members such as family or friendship ties and geographical proximity, they do not necessarily succeed at pulling like-minded users that share the same ...
arxiv