Search Results for author: Jianjun Li

Found 18 papers, 8 papers with code

Intention Reasoning Network for Multi-Domain End-to-end Task-Oriented Dialogue

no code implementations EMNLP 2021 Zhiyuan Ma, Jianjun Li, Zezheng Zhang, GuoHui Li, Yongjing Cheng

Based on such a mechanism, we further propose an intention reasoning network (IR-Net), which consists of joint and multi-hop reasoning, to obtain intention-aware representations of conceptual tokens that can be used to capture the concept shifts involved in task-oriented conversations, so as to effectively identify user’s intention and generate more accurate responses.

GLAF: Global-to-Local Aggregation and Fission Network for Semantic Level Fact Verification

no code implementations COLING 2022 Zhiyuan Ma, Jianjun Li, GuoHui Li, Yongjing Cheng

Accurate fact verification depends on performing fine-grained reasoning over crucial entities by capturing their latent logical relations hidden in multiple evidence clues, which is generally lacking in existing fact verification models.

Fact Verification

UniTranSeR: A Unified Transformer Semantic Representation Framework for Multimodal Task-Oriented Dialog System

no code implementations ACL 2022 Zhiyuan Ma, Jianjun Li, GuoHui Li, Yongjing Cheng

Specifically, we first embed the multimodal features into a unified Transformer semantic space to prompt inter-modal interactions, and then devise a feature alignment and intention reasoning (FAIR) layer to perform cross-modal entity alignment and fine-grained key-value reasoning, so as to effectively identify user’s intention for generating more accurate responses.

Entity Alignment

CMAL: A Novel Cross-Modal Associative Learning Framework for Vision-Language Pre-Training

no code implementations16 Oct 2024 Zhiyuan Ma, Jianjun Li, GuoHui Li, Kaiyan Huang

With the flourishing of social media platforms, vision-language pre-training (VLP) recently has received great attention and many remarkable progresses have been achieved.

Contrastive Learning

Efficient Diffusion Models: A Comprehensive Survey from Principles to Practices

no code implementations15 Oct 2024 Zhiyuan Ma, Yuzhu Zhang, Guoli Jia, Liangliang Zhao, Yichao Ma, Mingjie Ma, Gaofeng Liu, Kaiyan Zhang, Jianjun Li, BoWen Zhou

As one of the most popular and sought-after generative models in the recent years, diffusion models have sparked the interests of many researchers and steadily shown excellent advantage in various generative tasks such as image synthesis, video generation, molecule design, 3D scene rendering and multimodal generation, relying on their dense theoretical principles and reliable application practices.

Image Generation multimodal generation +2

Oxygen vacancies modulated VO2 for neurons and Spiking Neural Network construction

no code implementations16 Apr 2024 Liang Li, Ting Zhou, Tong Liu, Zhiwei Liu, Yaping Li, Shuo Wu, Shanguang Zhao, Jinglin Zhu, Meiling Liu, Zhihan Lin, Bowen Sun, Jianjun Li, Fangwen Sun, Chongwen Zou

However, its intrinsic insulating state requires the VO2 neuronal device to be driven under large bias voltage, resulting in high power consumption and low frequency.

DualVAE: Dual Disentangled Variational AutoEncoder for Recommendation

1 code implementation10 Jan 2024 Zhiqiang Guo, GuoHui Li, Jianjun Li, Chaoyang Wang, Si Shi

To address this problem, we propose a Dual Disentangled Variational AutoEncoder (DualVAE) for collaborative recommendation, which combines disentangled representation learning with variational inference to facilitate the generation of implicit interaction data.

Collaborative Filtering Disentanglement +1

LGMRec: Local and Global Graph Learning for Multimodal Recommendation

1 code implementation27 Dec 2023 Zhiqiang Guo, Jianjun Li, GuoHui Li, Chaoyang Wang, Si Shi, Bin Ruan

The multimodal recommendation has gradually become the infrastructure of online media platforms, enabling them to provide personalized service to users through a joint modeling of user historical behaviors (e. g., purchases, clicks) and item various modalities (e. g., visual and textual).

Graph Embedding Graph Learning +2

LMD: Faster Image Reconstruction with Latent Masking Diffusion

1 code implementation13 Dec 2023 Zhiyuan Ma, zhihuan yu, Jianjun Li, BoWen Zhou

Then, we combine the advantages of MAEs and DPMs to design a progressive masking diffusion model, which gradually increases the masking proportion by three different schedulers and reconstructs the latent features from simple to difficult, without sequentially performing denoising diffusion as in DPMs or using fixed high masking ratio as in MAEs, so as to alleviate the high training time-consumption predicament.

Denoising Image Reconstruction

MDGCF: Multi-Dependency Graph Collaborative Filtering with Neighborhood- and Homogeneous-level Dependencies

1 code implementation CIKM 2022 GuoHui Li, Zhiqiang Guo, Jianjun Li, Chaoyang Wang

Specifically, for neighborhood-level dependencies, we explicitly consider both popularity score and preference correlation by designing a joint neighborhood-level dependency weight, based on which we construct a neighborhood-level dependencies graph to capture higher-order interaction features.

Collaborative Filtering Graph Representation Learning +1

TopicVAE: Topic-aware Disentanglement Representation Learning for Enhanced Recommendation

1 code implementation ACM MM 2022 Zhiqiang Guo, GuoHui Li, Jianjun Li, Huaicong Chen

However, most existing methods considering content information are not well-designed to disentangle user preference features due to neglecting the diversity of user preference on different semantic topics of items, resulting in sub-optimal performance and low interpretability.

Disentanglement Recommendation Systems

WCL-BBCD: A Contrastive Learning and Knowledge Graph Approach to Named Entity Recognition

no code implementations14 Mar 2022 Renjie Zhou, Qiang Hu, Jian Wan, Jilin Zhang, Qiang Liu, Tianxiang Hu, Jianjun Li

The model first trains the sentence pairs in the text, calculate similarity between sentence pairs, and fine-tunes BERT used for the named entity recognition task according to the similarity, so as to alleviate word ambiguity.

Contrastive Learning Knowledge Graphs +4

A Light Heterogeneous Graph Collaborative Filtering Model using Textual Information

1 code implementation4 Oct 2020 Chaoyang Wang, Zhiqiang Guo, GuoHui Li, Jianjun Li, Peng Pan, Ke Liu

Afterward, by performing a simplified RGCN-based node information propagation on the constructed heterogeneous graph, the embeddings of users and items can be adjusted with textual knowledge, which effectively alleviates the negative effects of data sparsity.

Collaborative Filtering Recommendation Systems +1

A Text-based Deep Reinforcement Learning Framework for Interactive Recommendation

1 code implementation14 Apr 2020 Chaoyang Wang, Zhiqiang Guo, Jianjun Li, Peng Pan, Guo-Hui Li

IRSs usually face the large discrete action space problem, which makes most of the existing RL-based recommendation methods inefficient.

Deep Reinforcement Learning Recommendation Systems +2

PSDNet and DPDNet: Efficient channel expansion, Depthwise-Pointwise-Depthwise Inverted Bottleneck Block

no code implementations3 Sep 2019 Guoqing Li, Meng Zhang, Qianru Zhang, Ziyang Chen, Wenzhao Liu, Jiaojie Li, Xuzhao Shen, Jianjun Li, Zhenyu Zhu, Chau Yuen

To design more efficient lightweight concolutional neural netwok, Depthwise-Pointwise-Depthwise inverted bottleneck block (DPD block) is proposed and DPDNet is designed by stacking DPD block.

Retrosynthesis with Attention-Based NMT Model and Chemical Analysis of the "Wrong" Predictions

no code implementations2 Aug 2019 Hongliang Duan, Ling Wang, Chengyun Zhang, Jianjun Li

We cast retrosynthesis as a machine translation problem by introducing a special Tensor2Tensor, an entire attention-based and fully data-driven model.

Machine Translation NMT +2

Cannot find the paper you are looking for? You can Submit a new open access paper.