Search Results for author: Tieyun Qian

Found 21 papers, 6 papers with code

Convolution over Hierarchical Syntactic and Lexical Graphs for Aspect Level Sentiment Analysis

no code implementations EMNLP 2020 Mi Zhang, Tieyun Qian

Moreover, we build a concept hierarchy on both the syntactic and lexical graphs for differentiating various types of dependency relations or lexical word pairs.

Relation Sentence +2

Enhancing Aspect Term Extraction with Soft Prototypes

no code implementations EMNLP 2020 Zhuang Chen, Tieyun Qian

Aspect term extraction (ATE) aims to extract aspect terms from a review sentence that users have expressed opinions on.

Extract Aspect Retrieval +2

Mimicking the Thinking Process for Emotion Recognition in Conversation with Prompts and Paraphrasing

1 code implementation11 Jun 2023 Ting Zhang, Zhuang Chen, Ming Zhong, Tieyun Qian

It is a challenging task since the recognition of the emotion in one utterance involves many complex factors, such as the conversational context, the speaker's background, and the subtle difference between emotion labels.

Emotion Recognition in Conversation

Prompting Large Language Models for Counterfactual Generation: An Empirical Study

no code implementations24 May 2023 Yongqi Li, Mayi Xu, Xin Miao, Shen Zhou, Tieyun Qian

Based on this framework, we 1) investigate the strengths and weaknesses of LLMs as the counterfactual generator, and 2) disclose the factors that affect LLMs when generating counterfactuals, including both the intrinsic properties of LLMs and prompt designing.

counterfactual Data Augmentation +7

Generative Meta-Learning for Zero-Shot Relation Triplet Extraction

no code implementations3 May 2023 Wanli Li, Tieyun Qian

However, current generative models lack the optimization process of model generalization on different tasks during training, and thus have limited generalization capability.

General Knowledge Meta-Learning +2

Type-Aware Decomposed Framework for Few-Shot Named Entity Recognition

2 code implementations13 Feb 2023 Yongqi Li, Yu Yu, Tieyun Qian

Despite the recent success achieved by several two-stage prototypical networks in few-shot named entity recognition (NER) task, the overdetected false spans at the span detection stage and the inaccurate and unstable prototypes at the type classification stage remain to be challenging problems.

Contrastive Learning Few-shot NER +3

Automatically Generating Counterfactuals for Relation Classification

no code implementations22 Feb 2022 Mi Zhang, Tieyun Qian, Ting Zhang

In this paper, we formulate the problem of automatically generating CAD for RC tasks from an entity-centric viewpoint, and develop a novel approach to derive contextual counterfactuals for entities.

Classification Relation +1

From Consensus to Disagreement: Multi-Teacher Distillation for Semi-Supervised Relation Extraction

1 code implementation2 Dec 2021 Wanli Li, Tieyun Qian

Specifically, we first let the teachers correspond to the multiple models and select the samples in the intersection set of the last iteration in SSRE methods to augment labeled data as usual.

Relation Relation Extraction

Bridge-Based Active Domain Adaptation for Aspect Term Extraction

1 code implementation ACL 2021 Zhuang Chen, Tieyun Qian

Existing methods solve this problem by associating aspect terms with pivot words (we call this passive domain adaptation because the transfer of aspect terms relies on the links to pivots).

Domain Adaptation Term Extraction

Multi-Scale Feature and Metric Learning for Relation Extraction

no code implementations28 Jul 2021 Mi Zhang, Tieyun Qian

Specifically, we first develop a multi-scale convolutional neural network to aggregate the non-successive mainstays in the lexical sequence.

Metric Learning Relation +1

Intent Disentanglement and Feature Self-supervision for Novel Recommendation

no code implementations28 Jun 2021 Tieyun Qian, Yile Liang, Qing Li, Xuan Ma, Ke Sun, Zhiyong Peng

Improving the recommendation of tail items can promote novelty and bring positive effects to both users and providers, and thus is a desirable property of recommender systems.

Disentanglement Recommendation Systems +1

Recommending Accurate and Diverse Items Using Bilateral Branch Network

no code implementations4 Jan 2021 Yile Liang, Tieyun Qian

Specifically, we encode domain level diversity by adaptively balancing accurate recommendation in the conventional branch and diversified recommendation in the adaptive branch of a bilateral branch network.

Image Classification Metric Learning +1

Exploit Multiple Reference Graphs for Semi-supervised Relation Extraction

no code implementations22 Oct 2020 Wanli Li, Tieyun Qian

To tackle this limitation, we propose to build the connection between the unlabeled data and the labeled ones rather than directly mapping the unlabeled samples to the classes.

Relation Relation Extraction +1

Solving Cold Start Problem in Recommendation with Attribute Graph Neural Networks

no code implementations28 Dec 2019 Tieyun Qian, Yile Liang, Qing Li

More importantly, for a cold start user/item that does not have any interactions, such methods are unable to learn the preference embedding of the user/item since there is no link to this user/item in the graph.

Attribute Matrix Completion +1

Seq2seq Translation Model for Sequential Recommendation

no code implementations16 Dec 2019 Ke Sun, Tieyun Qian

We then generalize recent advancements in translation model from sequences of words in two languages to sequences of items and contexts in recommender systems.

Sequential Recommendation Translation

Transfer Capsule Network for Aspect Level Sentiment Classification

1 code implementation ACL 2019 Zhuang Chen, Tieyun Qian

In this paper, we propose a Transfer Capsule Network (TransCap) model for transferring document-level knowledge to aspect-level sentiment classification.

Classification General Classification +4

An Attribute Enhanced Domain Adaptive Model for Cold-Start Spam Review Detection

no code implementations COLING 2018 Zhenni You, Tieyun Qian, Bing Liu

With the abundant attributes in existing entities and knowledge in other domains, we successfully solve the problem of data scarcity in the cold-start settings.

Attribute Spam detection

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