65,228 research outputs found
Using Tree Kernels for Classifying Temporal Relations between Events
PACLIC 23 / City University of Hong Kong / 3-5 December 200
Enhance Temporal Relations in Audio Captioning with Sound Event Detection
Automated audio captioning aims at generating natural language descriptions
for given audio clips, not only detecting and classifying sounds, but also
summarizing the relationships between audio events. Recent research advances in
audio captioning have introduced additional guidance to improve the accuracy of
audio events in generated sentences. However, temporal relations between audio
events have received little attention while revealing complex relations is a
key component in summarizing audio content. Therefore, this paper aims to
better capture temporal relationships in caption generation with sound event
detection (SED), a task that locates events' timestamps. We investigate the
best approach to integrate temporal information in a captioning model and
propose a temporal tag system to transform the timestamps into comprehensible
relations. Results evaluated by the proposed temporal metrics suggest that
great improvement is achieved in terms of temporal relation generation
Exploiting Language Models to Classify Events from Twitter
Classifying events is challenging in Twitter because tweets texts have a large amount of temporal data with a lot of noise and various kinds of topics. In this paper, we propose a method to classify events from Twitter. We firstly find the distinguishing terms between tweets in events and measure their similarities with learning language models such as ConceptNet and a latent Dirichlet allocation method for selectional preferences (LDA-SP), which have been widely studied based on large text corpora within computational linguistic relations. The relationship of term words in tweets will be discovered by checking them under each model. We then proposed a method to compute the similarity between tweets based on tweets' features including common term words and relationships among their distinguishing term words. It will be explicit and convenient for applying to k-nearest neighbor techniques for classification. We carefully applied experiments on the Edinburgh Twitter Corpus to show that our method achieves competitive results for classifying events
Exploring Social Media for Event Attendance
Large popular events are nowadays well reflected in social media fora (e.g. Twitter), where people discuss their interest in participating in the events. In this paper we propose to exploit the content of non-geotagged posts in social media to build machine-learned classifiers able to infer users' attendance of large events in three temporal periods: before, during and after an event. The categories of features used to train the classifier reflect four different dimensions of social media: textual, temporal, social, and multimedia content. We detail the approach followed to design the feature space and report on experiments conducted on two large music festivals in the UK, namely the VFestival and Creamfields events. Our attendance classifier attains very high accuracy with the highest result observed for the Creamfields dataset ~87% accuracy to classify users that will participate in the event
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