Search Results for author: Linfeng Liu

Found 13 papers, 5 papers with code

Empower Nested Boolean Logic via Self-Supervised Curriculum Learning

1 code implementation9 Oct 2023 Hongqiu Wu, Linfeng Liu, Hai Zhao, Min Zhang

Beyond the great cognitive powers showcased by language models, it is crucial to scrutinize whether their reasoning capabilities stem from strong generalization or merely exposure to relevant data.

Logical Reasoning Self-Supervised Learning

Chinese Spelling Correction as Rephrasing Language Model

2 code implementations17 Aug 2023 Linfeng Liu, Hongqiu Wu, Hai Zhao

However, we note a critical flaw in the process of tagging one character to another, that the correction is excessively conditioned on the error.

Language Modelling Sentence +1

Diff-CAPTCHA: An Image-based CAPTCHA with Security Enhanced by Denoising Diffusion Model

no code implementations16 Aug 2023 Ran Jiang, Sanfeng Zhang, Linfeng Liu, Yanbing Peng

In this paper, an image-click CAPTCHA scheme called Diff-CAPTCHA is proposed based on denoising diffusion models.

Denoising Image Generation +1

TriFormer: A Multi-modal Transformer Framework For Mild Cognitive Impairment Conversion Prediction

no code implementations14 Jul 2023 Linfeng Liu, Junyan Lyu, Siyu Liu, Xiaoying Tang, Shekhar S. Chandra, Fatima A. Nasrallah

The prediction of mild cognitive impairment (MCI) conversion to Alzheimer's disease (AD) is important for early treatment to prevent or slow the progression of AD.

Kriging Convolutional Networks

1 code implementation15 Jun 2023 Gabriel Appleby, Linfeng Liu, Li-Ping Liu

Spatial interpolation is a class of estimation problems where locations with known values are used to estimate values at other locations, with an emphasis on harnessing spatial locality and trends.

Spatial Interpolation

Towards Accurate Subgraph Similarity Computation via Neural Graph Pruning

1 code implementation19 Oct 2022 Linfeng Liu, Xu Han, Dawei Zhou, Li-Ping Liu

In this work, we convert graph pruning to a problem of node relabeling and then relax it to a differentiable problem.

Cascaded Multi-Modal Mixing Transformers for Alzheimer's Disease Classification with Incomplete Data

no code implementations1 Oct 2022 Linfeng Liu, Siyu Liu, Lu Zhang, Xuan Vinh To, Fatima Nasrallah, Shekhar S. Chandra

The model uses a novel Cascaded Modality Transformer architecture with cross-attention to incorporate multi-modal information for more informed predictions.

Structure Guided Manifolds for Discovery of Disease Characteristics

no code implementations22 Sep 2022 Siyu Liu, Linfeng Liu, Xuan Vinh, Stuart Crozier, Craig Engstrom, Fatima Nasrallah, Shekhar Chandra

DiDiGAN learns a disease manifold of AD and CN visual characteristics, and the style codes sampled from this manifold are imposed onto an anatomical structural "blueprint" to synthesise paired AD and CN magnetic resonance images (MRIs).

Stochastic Iterative Graph Matching

1 code implementation4 Jun 2021 Linfeng Liu, Michael C. Hughes, Soha Hassoun, Li-Ping Liu

In this work, we propose a new model, Stochastic Iterative Graph MAtching (SIGMA), to address the graph matching problem.

Graph Matching Stochastic Optimization

Modeling Graph Node Correlations with Neighbor Mixture Models

no code implementations29 Mar 2021 Linfeng Liu, Michael C. Hughes, Li-Ping Liu

We propose a new model, the Neighbor Mixture Model (NMM), for modeling node labels in a graph.

Image Denoising Link Prediction +2

Localizing and Amortizing: Efficient Inference for Gaussian Processes

no code implementations25 Sep 2019 Linfeng Liu, LiPing Liu

Additionally, the inference task is decomposed to small subtasks with several technique innovations, making our model well suits the stochastic optimization.

Gaussian Processes Stochastic Optimization

Non-Parametric Variational Inference with Graph Convolutional Networks for Gaussian Processes

no code implementations8 Sep 2018 Linfeng Liu, Li-Ping Liu

Many recent inference methods approximate the posterior distribution with a simpler distribution defined on a small number of inducing points.

Gaussian Processes Stochastic Optimization +1

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