Yuanxin Ouyang

Learn More
Community-based Question Answering (CQA) has become popular in knowledge sharing sites since it allows users to get answers to complex, detailed, and personal questions directly from other users. Large archives of historical questions and associated answers have been accumulated. Retrieving relevant historical answers that best match a question is an(More)
The RFID is not only a feasible, novel, and cost-effective candidate for daily object identification but it is also considered as a significant tool to provide traceable visibility along different stages of the aviation supply chain. In the air baggage handing application, the RFID tags are used to enhance the ability for baggage tracking, dispatching and(More)
Location-awareness is a crucial trait of the mobile computing applications. The RFID is not only a feasible, novel, and cost-effective candidate for the indoor location sensing but also considered as the bridge which can merge physical world with hyperspace. Our study focuses on a location-aware computing architecture which provides the scalable(More)
Text in video is a very compact and accurate clue for video indexing and summarization. This paper presents an algorithm regarding word group as a special symbol to detect, localize and extract video text using support vector machine (SVM) automatically. First, four sobel operators are applied to get the EM(edge map) of the video frame and the EM is(More)
Sentiment analysis is one of the most important challenges to understand opinions online. In this research, inspired by the idea that the structural information among words, phrases and sentences is playing important role in identifying the overall statement's polarity, a novel sentiment analysis model is proposed based on recurrent neural network. The key(More)
Nowadays, the explosive growth and variety of information available on the Web frequently overwhelms users and leads users to make poor decisions. Consequently, recommender systems have become more and more important to assist people to make decisions faster. Among all related techniques, collaborative filtering approach is currently one of the effective(More)
Radio frequency identification (RFID) is a kind of widely used contactless automatic recognition technology. Large-scale deployment of RFID readers and tags provides a very good hardware foundation for ubiquitous computing. A typical RFID system is usually composed of four parts: tag, RFID reader, RFID middleware and application system. To make the RFID(More)
Molecular events normally have significant meanings since they describe important biological interactions or alternations such as binding of a protein. As a crucial step of biological event extraction, event trigger identification has attracted much attention and many methods have been proposed. Traditionally those methods can be categorised into rule-based(More)