Search Results for author: Ruihong Qiu

Found 18 papers, 16 papers with code

CaseLink: Inductive Graph Learning for Legal Case Retrieval

1 code implementation26 Mar 2024 Yanran Tang, Ruihong Qiu, Hongzhi Yin, Xue Li, Zi Huang

In a case pool, there are three types of case connectivity relationships: the case reference relationship, the case semantic relationship, and the case legal charge relationship.

Graph Learning Retrieval

PUMA: Efficient Continual Graph Learning with Graph Condensation

1 code implementation22 Dec 2023 Yilun Liu, Ruihong Qiu, Yanran Tang, Hongzhi Yin, Zi Huang

Our prior work, CaT is a replay-based framework with a balanced continual learning procedure, which designs a small yet effective memory bank for replaying data by condensing incoming graphs.

Continual Learning Graph Learning +1

CaseGNN: Graph Neural Networks for Legal Case Retrieval with Text-Attributed Graphs

1 code implementation18 Dec 2023 Yanran Tang, Ruihong Qiu, Yilun Liu, Xue Li, Zi Huang

Previous neural legal case retrieval models mostly encode the unstructured raw text of case into a case representation, which causes the lack of important legal structural information in a case and leads to poor case representation; (2) Lengthy legal text limitation.

Graph Attention Information Retrieval +1

CaT: Balanced Continual Graph Learning with Graph Condensation

3 code implementations18 Sep 2023 Yilun Liu, Ruihong Qiu, Zi Huang

Recent replay-based methods intend to solve this problem by updating the model using both (1) the entire new-coming data and (2) a sampling-based memory bank that stores replayed graphs to approximate the distribution of historical data.

Continual Learning Graph Learning

Balanced and Explainable Social Media Analysis for Public Health with Large Language Models

1 code implementation12 Sep 2023 Yan Jiang, Ruihong Qiu, Yi Zhang, Peng-Fei Zhang

Furthermore, an LLMs explanation mechanism is proposed by prompting an LLM with the predicted results from BERT models.

Data Augmentation Decision Making

UQ at #SMM4H 2023: ALEX for Public Health Analysis with Social Media

1 code implementation8 Sep 2023 Yan Jiang, Ruihong Qiu, Yi Zhang, Zi Huang

As social media becomes increasingly popular, more and more activities related to public health emerge.

Data Augmentation Task 2

Prompt-based Effective Input Reformulation for Legal Case Retrieval

1 code implementation6 Sep 2023 Yanran Tang, Ruihong Qiu, Xue Li

Although these straightforward methods have achieved improvement over conventional statistical methods in retrieval accuracy, two significant challenges are identified in this paper: (1) Legal feature alignment: the usage of the whole case text as the input will generally incorporate redundant and noisy information because, from the legal perspective, the determining factor of relevant cases is the alignment of key legal features instead of whole text matching; (2) Legal context preservation: furthermore, since the existing text encoding models usually have an input length limit shorter than the case, the whole case text needs to be truncated or divided into paragraphs, which leads to the loss of the global context of legal information.

Retrieval Text Matching

Beyond Double Ascent via Recurrent Neural Tangent Kernel in Sequential Recommendation

1 code implementation8 Sep 2022 Ruihong Qiu, Zi Huang, Hongzhi Yin

In this paper, we propose the Overparameterised Recommender (OverRec), which utilises a recurrent neural tangent kernel (RNTK) as a similarity measurement for user sequences to successfully bypass the restriction of hardware for huge models.

Sequential Recommendation

Contrastive Learning for Representation Degeneration Problem in Sequential Recommendation

2 code implementations12 Oct 2021 Ruihong Qiu, Zi Huang, Hongzhi Yin, Zijian Wang

In this paper, both empirical and theoretical investigations of this representation degeneration problem are first provided, based on which a novel recommender model DuoRec is proposed to improve the item embeddings distribution.

Contrastive Learning Sequential Recommendation

Memory Augmented Multi-Instance Contrastive Predictive Coding for Sequential Recommendation

2 code implementations1 Sep 2021 Ruihong Qiu, Zi Huang, Hongzhi Yin

In this paper, we propose a novel sequential recommendation framework to overcome these challenges based on a memory augmented multi-instance contrastive predictive coding scheme, denoted as MMInfoRec.

Contrastive Learning Sequential Recommendation

Learning to Diversify for Single Domain Generalization

1 code implementation ICCV 2021 Zijian Wang, Yadan Luo, Ruihong Qiu, Zi Huang, Mahsa Baktashmotlagh

Domain generalization (DG) aims to generalize a model trained on multiple source (i. e., training) domains to a distributionally different target (i. e., test) domain.

Domain Generalization

Mitigating Generation Shifts for Generalized Zero-Shot Learning

1 code implementation7 Jul 2021 Zhi Chen, Yadan Luo, Sen Wang, Ruihong Qiu, Jingjing Li, Zi Huang

Generalized Zero-Shot Learning (GZSL) is the task of leveraging semantic information (e. g., attributes) to recognize the seen and unseen samples, where unseen classes are not observable during training.

Attribute Generalized Zero-Shot Learning

CausalRec: Causal Inference for Visual Debiasing in Visually-Aware Recommendation

1 code implementation6 Jul 2021 Ruihong Qiu, Sen Wang, Zhi Chen, Hongzhi Yin, Zi Huang

Existing visually-aware models make use of the visual features as a separate collaborative signal similarly to other features to directly predict the user's preference without considering a potential bias, which gives rise to a visually biased recommendation.

counterfactual Counterfactual Inference +1

Exploiting Positional Information for Session-based Recommendation

no code implementations2 Jul 2021 Ruihong Qiu, Zi Huang, Tong Chen, Hongzhi Yin

According to our analysis, existing positional encoding schemes are generally forward-aware only, which can hardly represent the dynamics of the intention in a session.

Session-Based Recommendations

Exploiting Cross-Session Information for Session-based Recommendation with Graph Neural Networks

no code implementations2 Jul 2021 Ruihong Qiu, Zi Huang, Jingjing Li, Hongzhi Yin

Different from the traditional recommender system, the session-based recommender system introduces the concept of the session, i. e., a sequence of interactions between a user and multiple items within a period, to preserve the user's recent interest.

Representation Learning Session-Based Recommendations

Semantics Disentangling for Generalized Zero-Shot Learning

1 code implementation ICCV 2021 Zhi Chen, Yadan Luo, Ruihong Qiu, Sen Wang, Zi Huang, Jingjing Li, Zheng Zhang

Generalized zero-shot learning (GZSL) aims to classify samples under the assumption that some classes are not observable during training.

Generalized Zero-Shot Learning Relation Network

GAG: Global Attributed Graph Neural Network for Streaming Session-based Recommendation

1 code implementation6 Jul 2020 Ruihong Qiu, Hongzhi Yin, Zi Huang, Tong Chen

On one hand, when a new session arrives, a session graph with a global attribute is constructed based on the current session and its associate user.

Attribute Session-Based Recommendations

Rethinking the Item Order in Session-based Recommendation with Graph Neural Networks

1 code implementation27 Nov 2019 Ruihong Qiu, Jingjing Li, Zi Huang, Hongzhi Yin

In this paper, therefore, we study the item transition pattern by constructing a session graph and propose a novel model which collaboratively considers the sequence order and the latent order in the session graph for a session-based recommender system.

Graph Classification Session-Based Recommendations

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