no code implementations • SemEval (NAACL) 2022 • Yihui Li, Yifan Yang, Yice Zhang, Ruifeng Xu
This paper describes our system that participated in the SemEval-2022 Task 10: Structured Sentiment Analysis, which aims to extract opinion tuples from texts. A full opinion tuple generally contains an opinion holder, an opinion target, the sentiment expression, and the corresponding polarity. The complex structure of the opinion tuple makes the task challenging. To address this task, we formalize it as a span-relation extraction problem and propose a two-stage extraction framework accordingly. In the first stage, we employ the span module to enumerate spans and then recognize the type of every span. In the second stage, we employ the relation module to determine the relation between spans. Our system achieves competitive results and ranks among the top-10 systems in almost subtasks.
1 code implementation • 11 Mar 2020 • Junfa Liu, Juan Rojas, Zhijun Liang, Yihui Li, Yisheng Guan
Spatio-temporal information is key to resolve occlusion and depth ambiguity in 3D pose estimation.
Ranked #11 on 3D Human Pose Estimation on HumanEva-I