1 code implementation • Findings (EMNLP) 2021 • Hua Zheng, Lei LI, Damai Dai, Deli Chen, Tianyu Liu, Xu sun, Yang Liu
In this paper, we propose to leverage word-formation knowledge to enhance Chinese WSD.
1 code implementation • 29 May 2023 • Peiyi Wang, Lei LI, Liang Chen, Dawei Zhu, Binghuai Lin, Yunbo Cao, Qi Liu, Tianyu Liu, Zhifang Sui
We uncover a systematic bias in the evaluation paradigm of adopting large language models~(LLMs), e. g., GPT-4, as a referee to score the quality of responses generated by candidate models.
1 code implementation • 24 May 2023 • Shaoxiang Wu, Damai Dai, Ziwei Qin, Tianyu Liu, Binghuai Lin, Yunbo Cao, Zhifang Sui
However, unlike other image-text multimodal tasks, video has longer multimodal sequences with more redundancy and noise in both visual and audio modalities.
no code implementations • 24 May 2023 • Shoujie Tong, Heming Xia, Damai Dai, Tianyu Liu, Binghuai Lin, Yunbo Cao, Zhifang Sui
Pretrained language models have achieved remarkable success in a variety of natural language understanding tasks.
no code implementations • 24 May 2023 • Tianyu Liu, Afra Amini, Mrinmaya Sachan, Ryan Cotterell
We show that most structured prediction problems can be solved in linear time and space by considering them as partial orderings of the tokens in the input string.
no code implementations • 24 May 2023 • Zefan Cai, Xin Zheng, Tianyu Liu, Xu Wang, Haoran Meng, Jiaqi Han, Gang Yuan, Binghuai Lin, Baobao Chang, Yunbo Cao
In the constant updates of the product dialogue systems, we need to retrain the natural language understanding (NLU) model as new data from the real users would be merged into the existent data accumulated in the last updates.
1 code implementation • 18 May 2023 • Yuchen Eleanor Jiang, Tianyu Liu, Shuming Ma, Dongdong Zhang, Mrinmaya Sachan, Ryan Cotterell
Several recent papers claim human parity at sentence-level Machine Translation (MT), especially in high-resource languages.
no code implementations • 12 May 2023 • YiFan Song, Peiyi Wang, Dawei Zhu, Tianyu Liu, Zhifang Sui, Sujian Li
Continual learning (CL) aims to constantly learn new knowledge over time while avoiding catastrophic forgetting on old tasks.
no code implementations • 8 May 2023 • Heming Xia, Peiyi Wang, Tianyu Liu, Binghuai Lin, Yunbo Cao, Zhifang Sui
In this work, we point out that there exist two typical biases after training of this vanilla strategy: classifier bias and representation bias, which causes the previous knowledge that the model learned to be shaded.
no code implementations • 14 Dec 2022 • Xin Zheng, Tianyu Liu, Haoran Meng, Xu Wang, Yufan Jiang, Mengliang Rao, Binghuai Lin, Zhifang Sui, Yunbo Cao
Harvesting question-answer (QA) pairs from customer service chatlog in the wild is an efficient way to enrich the knowledge base for customer service chatbots in the cold start or continuous integration scenarios.
no code implementations • 26 Oct 2022 • Yuchen Eleanor Jiang, Tianyu Liu, Shuming Ma, Dongdong Zhang, Mrinmaya Sachan, Ryan Cotterell
The BWB corpus consists of Chinese novels translated by experts into English, and the annotated test set is designed to probe the ability of machine translation systems to model various discourse phenomena.
1 code implementation • 26 Oct 2022 • Tianyu Liu, Yuchen Jiang, Nicholas Monath, Ryan Cotterell, Mrinmaya Sachan
Recent years have seen a paradigm shift in NLP towards using pretrained language models ({PLM}) for a wide range of tasks.
Ranked #1 on
Relation Extraction
on CoNLL04
(RE+ Micro F1 metric)
1 code implementation • 20 Oct 2022 • Haoran Meng, Zheng Xin, Tianyu Liu, Zizhen Wang, He Feng, Binghuai Lin, Xuemin Zhao, Yunbo Cao, Zhifang Sui
While interacting with chatbots, users may elicit multiple intents in a single dialogue utterance.
1 code implementation • 16 Oct 2022 • Tianyu Liu, Jie Lu, Zheng Yan, Guangquan Zhang
The framework offers both a guarantee of generalized performance and good accuracy.
1 code implementation • 10 Oct 2022 • Peiyi Wang, YiFan Song, Tianyu Liu, Binghuai Lin, Yunbo Cao, Sujian Li, Zhifang Sui
In this paper, through empirical studies we argue that this assumption may not hold, and an important reason for catastrophic forgetting is that the learned representations do not have good robustness against the appearance of analogous relations in the subsequent learning process.
no code implementations • 1 Sep 2022 • Peiyi Wang, YiFan Song, Tianyu Liu, Rundong Gao, Binghuai Lin, Yunbo Cao, Zhifang Sui
2) Balanced Tuning (BT) finetunes the model on the balanced memory data.
1 code implementation • NAACL 2022 • Tianyu Liu, Yuchen Eleanor Jiang, Ryan Cotterell, Mrinmaya Sachan
Many natural language processing tasks, e. g., coreference resolution and semantic role labeling, require selecting text spans and making decisions about them.
1 code implementation • 2 May 2022 • Shoujie Tong, Qingxiu Dong, Damai Dai, YiFan Song, Tianyu Liu, Baobao Chang, Zhifang Sui
For each instance in a batch, we involve other instances in the same batch to interact with it.
1 code implementation • NAACL 2022 • Runxin Xu, Peiyi Wang, Tianyu Liu, Shuang Zeng, Baobao Chang, Zhifang Sui
In this paper, we focus on extracting event arguments from an entire document, which mainly faces two critical problems: a) the long-distance dependency between trigger and arguments over sentences; b) the distracting context towards an event in the document.
Document-level Event Extraction
Event Argument Extraction
+1
1 code implementation • 28 Apr 2022 • Zihan Wang, Peiyi Wang, Tianyu Liu, Binghuai Lin, Yunbo Cao, Zhifang Sui, Houfeng Wang
However, in this paradigm, there exists a huge gap between the classification tasks with sophisticated label hierarchy and the masked language model (MLM) pretraining tasks of PLMs and thus the potentials of PLMs can not be fully tapped.
no code implementations • 19 Apr 2022 • Hua Liang, Tianyu Liu, Peiyi Wang, Mengliang Rao, Yunbo Cao
2) Customer objection response assists the salespeople to figure out the typical customer objections and corresponding winning sales scripts, as well as search for proper sales responses for a certain customer objection.
2 code implementations • Findings (NAACL) 2022 • Liang Chen, Peiyi Wang, Runxin Xu, Tianyu Liu, Zhifang Sui, Baobao Chang
As Abstract Meaning Representation (AMR) implicitly involves compound semantic annotations, we hypothesize auxiliary tasks which are semantically or formally related can better enhance AMR parsing.
Ranked #6 on
AMR Parsing
on LDC2017T10
(using extra training data)
no code implementations • 16 Feb 2022 • Steven X. Ding, Linlin Li, Tianyu Liu
In this paper, we propose a new paradigm of fault diagnosis in dynamic systems as an alternative to the well-established observer-based framework.
no code implementations • 4 Feb 2022 • Wei Huang, Chunrui Liu, Yilan Chen, Tianyu Liu, Richard Yi Da Xu
In addition to being a pure generalization bound analysis tool, PAC-Bayesian bound can also be incorporated into an objective function to train a probabilistic neural network, making them a powerful and relevant framework that can numerically provide a tight generalization bound for supervised learning.
1 code implementation • 29 Nov 2021 • Pengfei Li, Yongliang Shi, Tianyu Liu, Hao Zhao, Guyue Zhou, Ya-Qin Zhang
Recent advances show that semi-supervised implicit representation learning can be achieved through physical constraints like Eikonal equations.
1 code implementation • CVPR 2022 • Xiaoxue Chen, Tianyu Liu, Hao Zhao, Guyue Zhou, Ya-Qin Zhang
Multi-task indoor scene understanding is widely considered as an intriguing formulation, as the affinity of different tasks may lead to improved performance.
Ranked #31 on
Semantic Segmentation
on NYU Depth v2
1 code implementation • ACL 2022 • Peiyi Wang, Liang Chen, Tianyu Liu, Damai Dai, Yunbo Cao, Baobao Chang, Zhifang Sui
Abstract Meaning Representation (AMR) parsing aims to translate sentences to semantic representation with a hierarchical structure, and is recently empowered by pretrained sequence-to-sequence models.
1 code implementation • NAACL 2022 • Peiyi Wang, Runxin Xu, Tianyu Liu, Qingyu Zhou, Yunbo Cao, Baobao Chang, Zhifang Sui
Few-Shot Sequence Labeling (FSSL) is a canonical paradigm for the tagging models, e. g., named entity recognition and slot filling, to generalize on an emerging, resource-scarce domain.
Ranked #2 on
Few-shot NER
on Few-NERD (INTER)
1 code implementation • 29 Aug 2021 • Peiyi Wang, Runxin Xu, Tianyu Liu, Damai Dai, Baobao Chang, Zhifang Sui
However, we find they suffer from trigger biases that signify the statistical homogeneity between some trigger words and target event types, which we summarize as trigger overlapping and trigger separability.
no code implementations • 21 Jun 2021 • Peiyi Wang, Tianyu Liu, Damai Dai, Runxin Xu, Baobao Chang, Zhifang Sui
Table encoder extracts sentiment at token-pair level, so that the compositional feature between targets and opinions can be easily captured.
Aspect Sentiment Triplet Extraction
Sentiment Classification
no code implementations • NAACL 2021 • Hua Zheng, Damai Dai, Lei LI, Tianyu Liu, Zhifang Sui, Baobao Chang, Yang Liu
In this paper, we tackle the task of Definition Generation (DG) in Chinese, which aims at automatically generating a definition for a word.
2 code implementations • ACL 2021 • Runxin Xu, Tianyu Liu, Lei LI, Baobao Chang
Existing methods are not effective due to two challenges of this task: a) the target event arguments are scattered across sentences; b) the correlation among events in a document is non-trivial to model.
Ranked #2 on
Document-level Event Extraction
on ChFinAnn
no code implementations • ACL 2022 • Qingxiu Dong, Ziwei Qin, Heming Xia, Tian Feng, Shoujie Tong, Haoran Meng, Lin Xu, Weidong Zhan, Sujian Li, Zhongyu Wei, Tianyu Liu, Zuifang Sui
It is a common practice for recent works in vision language cross-modal reasoning to adopt a binary or multi-choice classification formulation taking as input a set of source image(s) and textual query.
1 code implementation • 7 May 2021 • Tianyu Liu, Lingyu Zhang
This paper proposes a new model combined with deep learning to solve the multi-shift manpower scheduling problem based on the existing research.
1 code implementation • 7 May 2021 • Lingyu Zhang, Tianyu Liu, Yunhai Wang
In addition, to the numerical solution of the manpower scheduling problem, this paper also studies the algorithm for scheduling task list generation and the method of displaying scheduling results.
no code implementations • 4 May 2021 • Hang Yu, Tianyu Liu, Jie Lu, Guangquan Zhang
Many methods have been proposed to detect concept drift, i. e., the change in the distribution of streaming data, due to concept drift causes a decrease in the prediction accuracy of algorithms.
2 code implementations • ACL 2022 • Tianyu Liu, Yizhe Zhang, Chris Brockett, Yi Mao, Zhifang Sui, Weizhu Chen, Bill Dolan
Large pretrained generative models like GPT-3 often suffer from hallucinating non-existent or incorrect content, which undermines their potential merits in real applications.
1 code implementation • NAACL 2022 • Yuchen Eleanor Jiang, Tianyu Liu, Shuming Ma, Dongdong Zhang, Jian Yang, Haoyang Huang, Rico Sennrich, Ryan Cotterell, Mrinmaya Sachan, Ming Zhou
Standard automatic metrics, e. g. BLEU, are not reliable for document-level MT evaluation.
1 code implementation • 9 Mar 2021 • Hongkai Ye, Tianyu Liu, Chao Xu, Fei Gao
For real-time multirotor kinodynamic motion planning, the efficiency of sampling-based methods is usually hindered by difficult-to-sample homotopy classes like narrow passages.
Motion Planning
Robotics
no code implementations • 27 Feb 2021 • Steven X. Ding, Linlin Li, Dong Zhao, Chris Louen, Tianyu Liu
It is demonstrated, in the unified framework of control and detection, that all kernel attacks can be structurally detected when not only the observer-based residual, but also the control signal based residual signals are generated and used for the detection purpose.
no code implementations • 17 Feb 2021 • Lianzhe Huang, Peiyi Wang, Sujian Li, Tianyu Liu, Xiaodong Zhang, Zhicong Cheng, Dawei Yin, Houfeng Wang
Aspect Sentiment Triplet Extraction (ASTE) aims to extract triplets from a sentence, including target entities, associated sentiment polarities, and opinion spans which rationalize the polarities.
Ranked #8 on
Aspect Sentiment Triplet Extraction
on ASTE-Data-V2
1 code implementation • 17 Feb 2021 • Tianyu Liu, Xin Zheng, Baobao Chang, Zhifang Sui
In open domain table-to-text generation, we notice that the unfaithful generation usually contains hallucinated content which can not be aligned to any input table record.
1 code implementation • 7 Feb 2021 • Tianyu Liu, Jie Lu, Zheng Yan, Guangquan Zhang
By leveraging experience from previous tasks, meta-learning algorithms can achieve effective fast adaptation ability when encountering new tasks.
no code implementations • COLING 2020 • Kexiang Wang, Tianyu Liu, Baobao Chang, Zhifang Sui
The widespread adoption of reference-based automatic evaluation metrics such as ROUGE has promoted the development of document summarization.
1 code implementation • EMNLP 2020 • Xiaoan Ding, Tianyu Liu, Baobao Chang, Zhifang Sui, Kevin Gimpel
We explore training objectives for discriminative fine-tuning of our generative classifiers, showing improvements over log loss fine-tuning from prior work .
1 code implementation • CONLL 2020 • Tianyu Liu, Xin Zheng, Xiaoan Ding, Baobao Chang, Zhifang Sui
The prior work on natural language inference (NLI) debiasing mainly targets at one or few known biases while not necessarily making the models more robust.
1 code implementation • EMNLP 2020 • Lifu Tu, Tianyu Liu, Kevin Gimpel
Many tasks in natural language processing involve predicting structured outputs, e. g., sequence labeling, semantic role labeling, parsing, and machine translation.
no code implementations • 29 Jul 2020 • Tianyu Liu
To solve the subjectivity problem, we study the general user summarization process.
no code implementations • 16 Apr 2020 • Tianyu Liu, Qinghai Liao, Lu Gan, Fulong Ma, Jie Cheng, Xupeng Xie, Zhe Wang, Yingbing Chen, Yilong Zhu, Shuyang Zhang, Zhengyong Chen, Yang Liu, Meng Xie, Yang Yu, Zitong Guo, Guang Li, Peidong Yuan, Dong Han, Yuying Chen, Haoyang Ye, Jianhao Jiao, Peng Yun, Zhenhua Xu, Hengli Wang, Huaiyang Huang, Sukai Wang, Peide Cai, Yuxiang Sun, Yandong Liu, Lujia Wang, Ming Liu
Moreover, many countries have imposed tough lockdown measures to reduce the virus transmission (e. g., retail, catering) during the pandemic, which causes inconveniences for human daily life.
no code implementations • LREC 2020 • Tianyu Liu, Xin Zheng, Baobao Chang, Zhifang Sui
Many recent studies have shown that for models trained on datasets for natural language inference (NLI), it is possible to make correct predictions by merely looking at the hypothesis while completely ignoring the premise.
no code implementations • 9 Nov 2019 • Tianyu Liu, Wei Wei, William Yang Wang
In this paper, we propose the new task of table-to-text NLG with unseen schemas, which specifically aims to test the generalization of NLG for input tables with attribute types that never appear during training.
1 code implementation • ACL 2019 • Shuming Ma, Pengcheng Yang, Tianyu Liu, Peng Li, Jie zhou, Xu sun
We propose a novel model to separate the generation into two stages: key fact prediction and surface realization.
1 code implementation • ACL 2019 • Tianyu Liu, Jin-Ge Yao, Chin-Yew Lin
Most of the recently proposed neural models for named entity recognition have been purely data-driven, with a strong emphasis on getting rid of the efforts for collecting external resources or designing hand-crafted features.
Ranked #13 on
Named Entity Recognition (NER)
on Ontonotes v5 (English)
(using extra training data)
no code implementations • ACL 2019 • Pengcheng Yang, Fuli Luo, Peng Chen, Tianyu Liu, Xu sun
The task of unsupervised bilingual lexicon induction (UBLI) aims to induce word translations from monolingual corpora in two languages.
no code implementations • ACL 2019 • Pengcheng Yang, Lei LI, Fuli Luo, Tianyu Liu, Xu sun
Experiments show that with external commonsense knowledge and adversarial training, the generated essays are more novel, diverse, and topic-consistent than existing methods in terms of both automatic and human evaluation.
no code implementations • ACL 2019 • Fuli Luo, Damai Dai, Pengcheng Yang, Tianyu Liu, Baobao Chang, Zhifang Sui, Xu sun
Therefore, we propose a generic and novel framework which consists of a sentiment analyzer and a sentimental generator, respectively addressing the two challenges.
no code implementations • ACL 2019 • Tianyu Liu, Fuli Luo, Pengcheng Yang, Wei Wu, Baobao Chang, Zhifang Sui
To relieve these problems, we first propose force attention (FA) method to encourage the generator to pay more attention to the uncovered attributes to avoid potential key attributes missing.
no code implementations • 27 Apr 2019 • Jianhao Jiao, Qinghai Liao, Yilong Zhu, Tianyu Liu, Yang Yu, Rui Fan, Lujia Wang, Ming Liu
Multiple lidars are prevalently used on mobile vehicles for rendering a broad view to enhance the performance of localization and perception systems.
no code implementations • EMNLP 2018 • Fuli Luo, Tianyu Liu, Zexue He, Qiaolin Xia, Zhifang Sui, Baobao Chang
The goal of Word Sense Disambiguation (WSD) is to identify the correct meaning of a word in the particular context.
no code implementations • EMNLP 2018 • Wei Wu, Houfeng Wang, Tianyu Liu, Shuming Ma
As a result, the memory consumption can be reduced because the self-attention is performed at the phrase level instead of the sentence level.
1 code implementation • ACL 2018 • Fuli Luo, Tianyu Liu, Qiaolin Xia, Baobao Chang, Zhifang Sui
GAS models the semantic relationship between the context and the gloss in an improved memory network framework, which breaks the barriers of the previous supervised methods and knowledge-based methods.
Ranked #3 on
Word Sense Disambiguation
on SemEval 2015 Task 13
3 code implementations • 27 Nov 2017 • Tianyu Liu, Kexiang Wang, Lei Sha, Baobao Chang, Zhifang Sui
In the decoding phase, dual attention mechanism which contains word level attention and field level attention is proposed to model the semantic relevance between the generated description and the table.
Ranked #1 on
Table-to-Text Generation
on WikiBio
no code implementations • EMNLP 2017 • Kexiang Wang, Tianyu Liu, Zhifang Sui, Baobao Chang
Multi-document summarization provides users with a short text that summarizes the information in a set of related documents.
no code implementations • EMNLP 2017 • Tianyu Liu, Kexiang Wang, Baobao Chang, Zhifang Sui
Distant-supervised relation extraction inevitably suffers from wrong labeling problems because it heuristically labels relational facts with knowledge bases.
1 code implementation • 1 Sep 2017 • Lei Sha, Lili Mou, Tianyu Liu, Pascal Poupart, Sujian Li, Baobao Chang, Zhifang Sui
Generating texts from structured data (e. g., a table) is important for various natural language processing tasks such as question answering and dialog systems.
no code implementations • COLING 2016 • Tingsong Jiang, Tianyu Liu, Tao Ge, Lei Sha, Baobao Chang, Sujian Li, Zhifang Sui
In this paper, we present a novel time-aware knowledge graph completion model that is able to predict links in a KG using both the existing facts and the temporal information of the facts.