Search Results for author: Shanshan Feng

Found 23 papers, 7 papers with code

Where to Move Next: Zero-shot Generalization of LLMs for Next POI Recommendation

1 code implementation2 Apr 2024 Shanshan Feng, Haoming Lyu, Caishun Chen, Yew-Soon Ong

However, the generalization abilities of LLMs still are unexplored to address the next POI recommendations, where users' geographical movement patterns should be extracted.

Zero-shot Generalization

LIST: Learning to Index Spatio-Textual Data for Embedding based Spatial Keyword Queries

no code implementations12 Mar 2024 Ziqi Yin, Shanshan Feng, Shang Liu, Gao Cong, Yew Soon Ong, Bin Cui

With the proliferation of spatio-textual data, Top-k KNN spatial keyword queries (TkQs), which return a list of objects based on a ranking function that evaluates both spatial and textual relevance, have found many real-life applications.

Pseudo Label

HPCR: Holistic Proxy-based Contrastive Replay for Online Continual Learning

1 code implementation26 Sep 2023 Huiwei Lin, Shanshan Feng, Baoquan Zhang, Xutao Li, Yew-Soon Ong, Yunming Ye

Inspired by this finding, we propose a novel replay-based method called proxy-based contrastive replay (PCR), which replaces anchor-to-sample pairs with anchor-to-proxy pairs in the contrastive-based loss to alleviate the phenomenon of forgetting.

Continual Learning

UER: A Heuristic Bias Addressing Approach for Online Continual Learning

no code implementations8 Sep 2023 Huiwei Lin, Shanshan Feng, Baoquan Zhang, Hongliang Qiao, Xutao Li, Yunming Ye

By decomposing the dot-product logits into an angle factor and a norm factor, we empirically find that the bias problem mainly occurs in the angle factor, which can be used to learn novel knowledge as cosine logits.

Continual Learning

DRGame: Diversified Recommendation for Multi-category Video Games with Balanced Implicit Preferences

no code implementations30 Aug 2023 Kangzhe Liu, Jianghong Ma, Shanshan Feng, Haijun Zhang, Zhao Zhang

It is centered on multi-category video games, consisting of two {components}: Balance-driven Implicit Preferences Learning for data pre-processing and Clustering-based Diversified Recommendation {Module} for final prediction.

Representation Learning

IDVT: Interest-aware Denoising and View-guided Tuning for Social Recommendation

no code implementations30 Aug 2023 Dezhao Yang, Jianghong Ma, Shanshan Feng, Haijun Zhang, Zhao Zhang

Specifically, the denoising process considers both social network structure and user interaction interests in a global view.

Contrastive Learning Denoising +1

PCR: Proxy-based Contrastive Replay for Online Class-Incremental Continual Learning

1 code implementation CVPR 2023 Huiwei Lin, Baoquan Zhang, Shanshan Feng, Xutao Li, Yunming Ye

It aims to continuously learn new classes from data stream and the samples of data stream are seen only once, which suffers from the catastrophic forgetting issue, i. e., forgetting historical knowledge of old classes.

Continual Learning

Gated Mechanism Enhanced Multi-Task Learning for Dialog Routing

no code implementations COLING 2022 Ziming Huang, Zhuoxuan Jiang, Ke Wang, Juntao Li, Shanshan Feng, Xian-Ling Mao

Although most existing methods can fulfil this requirement, they can only model single-source dialog data and cannot effectively capture the underlying knowledge of relations among data and subtasks.

Multi-Task Learning

Leveraging Key Information Modeling to Improve Less-Data Constrained News Headline Generation via Duality Fine-Tuning

no code implementations10 Oct 2022 Zhuoxuan Jiang, Lingfeng Qiao, Di Yin, Shanshan Feng, Bo Ren

Recent language generative models are mostly trained on large-scale datasets, while in some real scenarios, the training datasets are often expensive to obtain and would be small-scale.

Headline Generation Informativeness +1

MetaDT: Meta Decision Tree with Class Hierarchy for Interpretable Few-Shot Learning

no code implementations3 Mar 2022 Baoquan Zhang, Hao Jiang, Xutao Li, Shanshan Feng, Yunming Ye, Rui Ye

Then, resorting to the prior, we split each few-shot task to a set of subtasks with different concept levels and then perform class prediction via a model of decision tree.

Few-Shot Learning Representation Learning

Enhancing Hyperbolic Graph Embeddings via Contrastive Learning

no code implementations21 Jan 2022 Jiahong Liu, Menglin Yang, Min Zhou, Shanshan Feng, Philippe Fournier-Viger

Inspired by the recently active and emerging self-supervised learning, in this study, we attempt to enhance the representation power of hyperbolic graph models by drawing upon the advantages of contrastive learning.

Contrastive Learning Graph Representation Learning +2

SGMNet: Scene Graph Matching Network for Few-Shot Remote Sensing Scene Classification

no code implementations9 Oct 2021 Baoquan Zhang, Shanshan Feng, Xutao Li, Yunming Ye, Rui Ye

In this framework, a scene graph construction module is carefully designed to represent each test remote sensing image or each scene class as a scene graph, where the nodes reflect these co-occurrence objects meanwhile the edges capture the spatial correlations between these co-occurrence objects.

graph construction Graph Matching +3

Prototype Completion for Few-Shot Learning

1 code implementation11 Aug 2021 Baoquan Zhang, Xutao Li, Yunming Ye, Shanshan Feng

In this paper, 1) we figure out the reason, i. e., in the pre-trained feature space, the base classes already form compact clusters while novel classes spread as groups with large variances, which implies that fine-tuning feature extractor is less meaningful; 2) instead of fine-tuning feature extractor, we focus on estimating more representative prototypes.

Attribute Few-Shot Image Classification +1

Exploiting Global Contextual Information for Document-level Named Entity Recognition

no code implementations2 Jun 2021 Zanbo Wang, Wei Wei, Xianling Mao, Shanshan Feng, Pan Zhou, Zhiyong He, Sheng Jiang

To this end, we propose a model called Global Context enhanced Document-level NER (GCDoc) to leverage global contextual information from two levels, i. e., both word and sentence.

named-entity-recognition Named Entity Recognition +2

MetaNODE: Prototype Optimization as a Neural ODE for Few-Shot Learning

1 code implementation26 Mar 2021 Baoquan Zhang, Xutao Li, Shanshan Feng, Yunming Ye, Rui Ye

Although the existing meta-optimizers can also be adapted to our framework, they all overlook a crucial gradient bias issue, \emph{i. e.}, the mean-based gradient estimation is also biased on sparse data.

Few-Shot Learning

Exploiting Group-level Behavior Pattern forSession-based Recommendation

no code implementations10 Dec 2020 Ziyang Wang, Wei Wei, Xian-Ling Mao, Xiao-Li Li, Shanshan Feng

In RNMSR, we propose to learn the user preference from both instance-level and group-level, respectively: (i) instance-level, which employs GNNs on a similarity-based item-pairwise session graph to capture the users' preference in instance-level.

Representation Learning Session-Based Recommendations

Exploring Global Information for Session-based Recommendation

no code implementations20 Nov 2020 Ziyang Wang, Wei Wei, Gao Cong, Xiao-Li Li, Xian-Ling Mao, Minghui Qiu, Shanshan Feng

Based on BGNN, we propose a novel approach, called Session-based Recommendation with Global Information (SRGI), which infers the user preferences via fully exploring global item-transitions over all sessions from two different perspectives: (i) Fusion-based Model (SRGI-FM), which recursively incorporates the neighbor embeddings of each node on global graph into the learning process of session level item representation; and (ii) Constrained-based Model (SRGI-CM), which treats the global-level item-transition information as a constraint to ensure the learned item embeddings are consistent with the global item-transition.

Session-Based Recommendations

User-based Network Embedding for Collective Opinion Spammer Detection

no code implementations16 Nov 2020 Ziyang Wang, Wei Wei, Xian-Ling Mao, Guibing Guo, Pan Zhou, Shanshan Feng

Due to the huge commercial interests behind online reviews, a tremendousamount of spammers manufacture spam reviews for product reputation manipulation.

Network Embedding Relation

Target Guided Emotion Aware Chat Machine

no code implementations15 Nov 2020 Wei Wei, Jiayi Liu, Xianling Mao, Guibin Guo, Feida Zhu, Pan Zhou, Yuchong Hu, Shanshan Feng

The consistency of a response to a given post at semantic-level and emotional-level is essential for a dialogue system to deliver human-like interactions.

A Survey on Recent Advances in Sequence Labeling from Deep Learning Models

no code implementations13 Nov 2020 Zhiyong He, Zanbo Wang, Wei Wei, Shanshan Feng, Xianling Mao, Sheng Jiang

Sequence labeling (SL) is a fundamental research problem encompassing a variety of tasks, e. g., part-of-speech (POS) tagging, named entity recognition (NER), text chunking, etc.

Chunking Information Retrieval +9

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