Search Results for author: Jiaxi Li

Found 6 papers, 4 papers with code

Learning Differentiable Particle Filter on the Fly

no code implementations10 Dec 2023 Jiaxi Li, Xiongjie Chen, Yunpeng Li

Differentiable particle filters are an emerging class of sequential Bayesian inference techniques that use neural networks to construct components in state space models.

Bayesian Inference Object Tracking +1

Unraveling Feature Extraction Mechanisms in Neural Networks

1 code implementation25 Oct 2023 Xiaobing Sun, Jiaxi Li, Wei Lu

The underlying mechanism of neural networks in capturing precise knowledge has been the subject of consistent research efforts.

Language Modelling

Decomposed Prompt Tuning via Low-Rank Reparameterization

1 code implementation16 Oct 2023 Yao Xiao, Lu Xu, Jiaxi Li, Wei Lu, XiaoLi Li

While prompt tuning approaches have achieved competitive performance with high efficiency, we observe that they invariably employ the same initialization process, wherein the soft prompt is either randomly initialized or derived from an existing embedding vocabulary.

HRGCN: Heterogeneous Graph-level Anomaly Detection with Hierarchical Relation-augmented Graph Neural Networks

1 code implementation28 Aug 2023 Jiaxi Li, Guansong Pang, Ling Chen, Mohammad-Reza Namazi-Rad

To address the problem, we propose HRGCN, an unsupervised deep heterogeneous graph neural network, to model complex heterogeneous relations between different entities in the system for effectively identifying these anomalous behaviour graphs.

Anomaly Detection Relation

Contextual Distortion Reveals Constituency: Masked Language Models are Implicit Parsers

1 code implementation1 Jun 2023 Jiaxi Li, Wei Lu

To leverage this knowledge, we propose a novel chart-based method for extracting parse trees from masked language models (LMs) without the need to train separate parsers.

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