1 code implementation • EMNLP 2020 • Abdul Rafae Khan, Jia Xu, Weiwei Sun
Natural Language Processing (NLP) tasks are usually performed word by word on textual inputs.
no code implementations • CL (ACL) 2021 • Junjie Cao, Zi Lin, Weiwei Sun, Xiaojun Wan
Abstract In this work, we present a phenomenon-oriented comparative analysis of the two dominant approaches in English Resource Semantic (ERS) parsing: classic, knowledge-intensive and neural, data-intensive models.
no code implementations • EACL (BEA) 2021 • Mengyu Zhang, Weiqi Wang, Shuqiao Sun, Weiwei Sun
We build a neural NSR system, which achieves a new state-of-the-art accuracy on English benchmark data.
no code implementations • 20 Dec 2022 • Weiwei Sun, Zhengliang Shi, Shen Gao, Pengjie Ren, Maarten de Rijke, Zhaochun Ren
MixCL effectively reduces the hallucination of LMs in conversations and achieves the highest performance among LM-based dialogue agents in terms of relevancy and factuality.
no code implementations • 13 Dec 2022 • Zizhang Wu, Man Wang, Weiwei Sun, Yuchen Li, Tianhao Xu, Fan Wang, Keke Huang
Channel and spatial attention mechanism has proven to provide an evident performance boost of deep convolution neural networks (CNNs).
1 code implementation • 23 Nov 2022 • Yuqi Chen, Hanyuan Zhang, Weiwei Sun, Baihua Zheng
However, many real-life trajectories are collected with low sample rate due to energy concern or other constraints. We study the task of trajectory recovery in this paper as a means for increasing the sample rate of low sample trajectories.
1 code implementation • 29 Sep 2022 • Gengchen Mai, Chiyu Jiang, Weiwei Sun, Rui Zhu, Yao Xuan, Ling Cai, Krzysztof Janowicz, Stefano Ermon, Ni Lao
For the spatial domain approach, we propose ResNet1D, a 1D CNN-based polygon encoder, which uses circular padding to achieve loop origin invariance on simple polygons.
no code implementations • 20 Jul 2022 • Weiwei Sun, Daniel Rebain, Renjie Liao, Vladimir Tankovich, Soroosh Yazdani, Kwang Moo Yi, Andrea Tagliasacchi
We introduce a method for instance proposal generation for 3D point clouds.
no code implementations • 9 Jul 2022 • Liang Li, Baihua Zheng, Weiwei Sun
We introduce structural semantic metrics based on graph adjacency relations during the semantic reconstruction and correlation mining stage and meanwhile align the structure semantics in the hash space with an asymmetric binary optimization process.
no code implementations • 16 Jun 2022 • Yuhe Jin, Weiwei Sun, Jan Hosang, Eduard Trulls, Kwang Moo Yi
Existing unsupervised methods for keypoint learning rely heavily on the assumption that a specific keypoint type (e. g. elbow, digit, abstract geometric shape) appears only once in an image.
1 code implementation • 26 Apr 2022 • Qize Jiang, Minhao Qin, Shengmin Shi, Weiwei Sun, Baihua Zheng
How to coordinate the communication among intersections effectively in real complex traffic scenarios with multi-intersection is challenging.
Multi-agent Reinforcement Learning
reinforcement-learning
+1
1 code implementation • 2 Apr 2022 • Weiwei Sun, Shuyu Guo, Shuo Zhang, Pengjie Ren, Zhumin Chen, Maarten de Rijke, Zhaochun Ren
Employing existing user simulators to evaluate TDSs is challenging as user simulators are primarily designed to optimize dialogue policies for TDSs and have limited evaluation capabilities.
1 code implementation • NAACL 2021 • Wenxi Li, Yiyang Hou, Yajie Ye, Li Liang, Weiwei Sun
By means of the new annotations, we also evaluate a series of neural tagging models to gauge how successful semantic tagging can be: accuracies of 92. 7{\%} and 94. 6{\%} are obtained for Chinese and English respectively.
1 code implementation • 8 May 2021 • Weiwei Sun, Shuo Zhang, Krisztian Balog, Zhaochun Ren, Pengjie Ren, Zhumin Chen, Maarten de Rijke
The purpose of the task is to increase the evaluation power of user simulations and to make the simulation more human-like.
1 code implementation • NeurIPS 2021 • Weiwei Sun, Andrea Tagliasacchi, Boyang Deng, Sara Sabour, Soroosh Yazdani, Geoffrey Hinton, Kwang Moo Yi
We propose a self-supervised capsule architecture for 3D point clouds.
no code implementations • 15 Oct 2020 • Benlei Cui, XueMei Dong, Qiaoqiao Zhan, Jiangtao Peng, Weiwei Sun
Based on 3D depthwise convolution, LiteDepthwiseNet can decompose standard convolution into depthwise convolution and pointwise convolution, which can achieve high classification performance with minimal parameters.
1 code implementation • 22 Sep 2020 • Bobo Xi, Jiaojiao Li, Yunsong Li, Rui Song, Weiwei Sun, Qian Du.
Recently, multiscale spatial features have been widely utilized to improve the hyperspectral image (HSI) classification performance.
no code implementations • 17 Jul 2020 • Yuanyuan Zhao, Weiwei Sun, Xiaojun Wan
It is reasonable to hypothesize that the divergence patterns formulated by historical linguists and typologists reflect constraints on human languages, and are thus consistent with Second Language Acquisition (SLA) in a certain way.
no code implementations • ACL 2020 • Yajie Ye, Weiwei Sun
A key problem in processing graph-based meaning representations is graph parsing, i. e. computing all possible derivations of a given graph according to a (competence) grammar.
no code implementations • ACL 2020 • Yufei Chen, Weiwei Sun
We propose variable-in-situ logico-semantic graphs to bridge the gap between semantic graph and logical form parsing.
no code implementations • ACL 2020 • Yuanyuan Zhao, Weiwei Sun, Junjie Cao, Xiaojun Wan
This paper is concerned with semantic parsing for English as a second language (ESL).
no code implementations • 30 Jun 2020 • Zizhang Wu, Man Wang, Lingxiao Yin, Weiwei Sun, Jason Wang, Huangbin Wu
The vehicle re-identification (ReID) plays a critical role in the perception system of autonomous driving, which attracts more and more attention in recent years.
no code implementations • 12 May 2020 • Zizhang Wu, Weiwei Sun, Man Wang, Xiaoquan Wang, Lizhu Ding, Fan Wang
\romannumeral2, Expert knowledge for parking slot detection is under-estimated.
no code implementations • 17 Feb 2020 • Hao Wu, Hanyuan Zhang, Xin-Yu Zhang, Weiwei Sun, Baihua Zheng, Yuning Jiang
We propose a deep convolutional neural network called DeepDualMapper which fuses the aerial image and trajectory data in a more seamless manner to extract the digital map.
no code implementations • CONLL 2019 • Yufei Chen, Yajie Ye, Weiwei Sun
We design, implement and evaluate two semantic parsers, which represent factorization- and composition-based approaches respectively, for Elementary Dependency Structures (EDS) at the CoNLL 2019 Shared Task on Cross-Framework Meaning Representation Parsing.
no code implementations • 9 Oct 2019 • Hong Yu, Xiaofan Zhang, Lingjun Song, Liren Jiang, Xiaodi Huang, Wen Chen, Chenbin Zhang, Jiahui Li, Jiji Yang, Zhiqiang Hu, Qi Duan, Wanyuan Chen, Xianglei He, Jinshuang Fan, Weihai Jiang, Li Zhang, Chengmin Qiu, Minmin Gu, Weiwei Sun, Yangqiong Zhang, Guangyin Peng, Weiwei Shen, Guohui Fu
Gastric cancer is one of the most common cancers, which ranks third among the leading causes of cancer death.
1 code implementation • 17 Sep 2019 • Wei Jiang, Juan Camilo Gamboa Higuera, Baptiste Angles, Weiwei Sun, Mehrsan Javan, Kwang Moo Yi
We propose an optimization-based framework to register sports field templates onto broadcast videos.
1 code implementation • CVPR 2020 • Weiwei Sun, Wei Jiang, Eduard Trulls, Andrea Tagliasacchi, Kwang Moo Yi
Many problems in computer vision require dealing with sparse, unordered data in the form of point clouds.
no code implementations • 4 Jul 2019 • Junjie Cao, Zi Lin, Weiwei Sun, Xiaojun Wan
We present a phenomenon-oriented comparative analysis of the two dominant approaches in task-independent semantic parsing: classic, knowledge-intensive and neural, data-intensive models.
1 code implementation • ACL 2019 • Alex Koller, er, Stephan Oepen, Weiwei Sun
This tutorial is on representing and processing sentence meaning in the form of labeled directed graphs.
1 code implementation • SEMEVAL 2019 • Weimin Lyu, Sheng Huang, Abdul Rafae Khan, Shengqiang Zhang, Weiwei Sun, Jia Xu
This paper describes the systems of the CUNY-PKU team in SemEval 2019 Task 1: Cross-lingual Semantic Parsing with UCCA.
1 code implementation • 11 Apr 2019 • Hao Wu, Jiayuan Mao, Yufeng Zhang, Yuning Jiang, Lei LI, Weiwei Sun, Wei-Ying Ma
We propose Unified Visual-Semantic Embeddings (UniVSE) for learning a joint space of visual and textual concepts.
no code implementations • CL 2019 • Weiwei Sun, Yufei Chen, Xiaojun Wan, Meichun Liu
In this work, we propose to represent grammatical information using general directed dependency graphs.
1 code implementation • ICCV 2019 • Wei Jiang, Weiwei Sun, Andrea Tagliasacchi, Eduard Trulls, Kwang Moo Yi
We propose a novel image sampling method for differentiable image transformation in deep neural networks.
no code implementations • 8 Oct 2018 • Yunheng Han, Weiwei Sun, Baihua Zheng
Consequently, it is ineffective to infer predictability through dictionary coding algorithms.
1 code implementation • CONLL 2018 • Yufei Chen, Sheng Huang, Fang Wang, Junjie Cao, Weiwei Sun, Xiaojun Wan
We present experiments for cross-domain semantic dependency analysis with a neural Maximum Subgraph parser.
1 code implementation • EMNLP 2018 • Zi Lin, Yuguang Duan, Yuan-Yuan Zhao, Weiwei Sun, Xiaojun Wan
This paper studies semantic parsing for interlanguage (L2), taking semantic role labeling (SRL) as a case task and learner Chinese as a case language.
no code implementations • ACL 2018 • Yufei Chen, Yuan-Yuan Zhao, Weiwei Sun, Xiaojun Wan
Motivated by the positive impact of empty category on syntactic parsing, we study neural models for pre- and in-parsing detection of empty category, which has not previously been investigated.
no code implementations • ACL 2018 • Yufei Chen, Weiwei Sun, Xiaojun Wan
We demonstrate that an SHRG-based parser can produce semantic graphs much more accurately than previously shown, by relating synchronous production rules to the syntacto-semantic composition process.
no code implementations • ACL 2018 • Yajie Ye, Weiwei Sun, Xiaojun Wan
This remarkable result demonstrates the feasibility of applying a DAG transducer to resolve NLG, as well as the effectiveness of our design.
no code implementations • 6 Feb 2018 • Hanyuan Zhang, Hao Wu, Weiwei Sun, Baihua Zheng
Estimating the travel time of a path is of great importance to smart urban mobility.
no code implementations • 25 Nov 2017 • Xu Sun, Weiwei Sun, Shuming Ma, Xuancheng Ren, Yi Zhang, Wenjie Li, Houfeng Wang
The decoding of the complex structure model is regularized by the additionally trained simple structure model.
no code implementations • EMNLP 2017 • Junjie Cao, Sheng Huang, Weiwei Sun, Xiaojun Wan
We propose a new Maximum Subgraph algorithm for first-order parsing to 1-endpoint-crossing, pagenumber-2 graphs.
no code implementations • CONLL 2017 • Xun Zhang, Weiwei Sun, Xiaojun Wan
This paper is concerned with whether deep syntactic information can help surface parsing, with a particular focus on empty categories.
no code implementations • CONLL 2017 • Weiwei Sun, Yantao Du, Xiaojun Wan
This paper is concerned with building deep grammatical relation (GR) analysis using data-driven approach.
no code implementations • ACL 2017 • Junjie Cao, Sheng Huang, Weiwei Sun, Xiaojun Wan
We study the Maximum Subgraph problem in deep dependency parsing.
no code implementations • ACL 2017 • Weiwei Sun, Junjie Cao, Xiaojun Wan
We model a dependency graph as a book, a particular kind of topological space, for semantic dependency parsing.
no code implementations • TACL 2013 • Weiwei Sun, Xiaojun Wan
We present a comparative study of transition-, graph- and PCFG-based models aimed at illuminating more precisely the likely contribution of CFGs in improving Chinese dependency parsing accuracy, especially by combining heterogeneous models.