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Tweets represent a critical source of fresh information , in which named entities occur frequently with rich variations. We study the problem of named entity normalization (NEN) for tweets. Two main challenges are the errors propagated from named entity recognition (NER) and the dearth of information in a single tweet. We propose a novel graphi-cal model to(More)
Social events are events that occur between people where at least one person is aware of the other and of the event taking place. Extracting social events can play an important role in a wide range of applications, such as the construction of social network. In this paper, we introduce the task of social event extraction for tweets, an important source of(More)
Tweets have become an increasingly popular source of fresh information. We investigate the task of Nominal Semantic Role Labeling (NSRL) for tweets, which aims to identify predicate-argument structures defined by nominals in tweets. Studies of this task can help fine-grained information extraction and retrieval from tweets. There are two main challenges in(More)
The novel mobile application SocialWall enables its users to discover and share useful information by interactively designing meaningful posters. We think posters are of a good form to present information and discover interesting facts. Thus, we let users to choose what data they wanted to see on the poster and how they shall be visually presented. This(More)
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