Search Results for author: Ruizhe Zhang

Found 19 papers, 1 papers with code

Improving Legal Case Retrieval with Brain Signals

no code implementations20 Mar 2024 Ruizhe Zhang, Qingyao Ai, Ziyi Ye, Yueyue Wu, Xiaohui Xie, Yiqun Liu

Traditional feedback signal such as clicks is too coarse to use as they do not reflect any fine-grained relevance information.

EEG Retrieval

Evaluation Ethics of LLMs in Legal Domain

no code implementations17 Mar 2024 Ruizhe Zhang, Haitao Li, Yueyue Wu, Qingyao Ai, Yiqun Liu, Min Zhang, Shaoping Ma

In recent years, the utilization of large language models for natural language dialogue has gained momentum, leading to their widespread adoption across various domains.

Ethics

Gender Biased Legal Case Retrieval System on Users' Decision Process

no code implementations25 Feb 2024 Ruizhe Zhang, Qingyao Ai, Yiqun Liu, Yueyue Wu, Beining Wang

Gender of the defendants in both the task and relevant cases was edited to statistically measure the effect of gender bias in the legal case search results on participants' perceptions.

Retrieval

Quantum Speedup for Spectral Approximation of Kronecker Products

no code implementations10 Feb 2024 Yeqi Gao, Zhao Song, Ruizhe Zhang

Given its widespread application in machine learning and optimization, the Kronecker product emerges as a pivotal linear algebra operator.

Infinite-Horizon Graph Filters: Leveraging Power Series to Enhance Sparse Information Aggregation

1 code implementation18 Jan 2024 Ruizhe Zhang, Xinke Jiang, Yuchen Fang, Jiayuan Luo, Yongxin Xu, Yichen Zhu, Xu Chu, Junfeng Zhao, Yasha Wang

Graph Neural Networks (GNNs) have shown considerable effectiveness in a variety of graph learning tasks, particularly those based on the message-passing approach in recent years.

Graph Learning Node Classification

HyKGE: A Hypothesis Knowledge Graph Enhanced Framework for Accurate and Reliable Medical LLMs Responses

no code implementations26 Dec 2023 Xinke Jiang, Ruizhe Zhang, Yongxin Xu, Rihong Qiu, Yue Fang, Zhiyuan Wang, Jinyi Tang, Hongxin Ding, Xu Chu, Junfeng Zhao, Yasha Wang

In this paper, we investigate the retrieval-augmented generation (RAG) based on Knowledge Graphs (KGs) to improve the accuracy and reliability of Large Language Models (LLMs).

Knowledge Graphs Multiple-choice +1

Revisiting Quantum Algorithms for Linear Regressions: Quadratic Speedups without Data-Dependent Parameters

no code implementations24 Nov 2023 Zhao Song, Junze Yin, Ruizhe Zhang

However, the running times of these algorithms depend on some quantum linear algebra-related parameters, such as $\kappa(A)$, the condition number of $A$.

regression

Investigating the Influence of Legal Case Retrieval Systems on Users' Decision Process

no code implementations7 Oct 2023 Beining Wang, Ruizhe Zhang, Yueyue Wu, Qingyao Ai, Min Zhang, Yiqun Liu

Given a specific query case, legal case retrieval systems aim to retrieve a set of case documents relevant to the case at hand.

Decision Making Information Retrieval +1

Fast Quantum Algorithm for Attention Computation

no code implementations16 Jul 2023 Yeqi Gao, Zhao Song, Xin Yang, Ruizhe Zhang

It is well-known that quantum machine has certain computational advantages compared to the classical machine.

Language Modelling Machine Translation +5

A General Algorithm for Solving Rank-one Matrix Sensing

no code implementations22 Mar 2023 Lianke Qin, Zhao Song, Ruizhe Zhang

In this paper, we relax that rank-$k$ assumption and solve a much more general matrix sensing problem.

Diverse legal case search

no code implementations29 Jan 2023 Ruizhe Zhang, Qingyao Ai, Yueyue Wu, Yixiao Ma, Yiqun Liu

In the process of searching, legal practitioners often need the search results under several different causes of cases as reference.

Retrieval Specificity

Convergence and Generalization of Wide Neural Networks with Large Bias

no code implementations1 Jan 2023 Hongru Yang, Ziyu Jiang, Ruizhe Zhang, Zhangyang Wang, Yingbin Liang

This work studies training one-hidden-layer overparameterized ReLU networks via gradient descent in the neural tangent kernel (NTK) regime, where the networks' biases are initialized to some constant rather than zero.

Quantum Algorithms for Sampling Log-Concave Distributions and Estimating Normalizing Constants

no code implementations12 Oct 2022 Andrew M. Childs, Tongyang Li, Jin-Peng Liu, Chunhao Wang, Ruizhe Zhang

We also prove a $1/\epsilon^{1-o(1)}$ quantum lower bound for estimating normalizing constants, implying near-optimality of our quantum algorithms in $\epsilon$.

Quantum Speedups of Optimizing Approximately Convex Functions with Applications to Logarithmic Regret Stochastic Convex Bandits

no code implementations26 Sep 2022 Tongyang Li, Ruizhe Zhang

As an application, we give a quantum algorithm for zeroth-order stochastic convex bandits with $\tilde{O}(n^{5}\log^{2} T)$ regret, an exponential speedup in $T$ compared to the classical $\Omega(\sqrt{T})$ lower bound.

Training Multi-Layer Over-Parametrized Neural Network in Subquadratic Time

no code implementations14 Dec 2021 Zhao Song, Lichen Zhang, Ruizhe Zhang

We consider the problem of training a multi-layer over-parametrized neural network to minimize the empirical risk induced by a loss function.

Does Preprocessing Help Training Over-parameterized Neural Networks?

no code implementations NeurIPS 2021 Zhao Song, Shuo Yang, Ruizhe Zhang

The classical training method requires paying $\Omega(mnd)$ cost for both forward computation and backward computation, where $m$ is the width of the neural network, and we are given $n$ training points in $d$-dimensional space.

InstaHide’s Sample Complexity When Mixing Two Private Images

no code implementations29 Sep 2021 Baihe Huang, Zhao Song, Runzhou Tao, Ruizhe Zhang, Danyang Zhuo

Inspired by InstaHide challenge [Huang, Song, Li and Arora'20], [Chen, Song and Zhuo'20] recently provides one mathematical formulation of InstaHide attack problem under Gaussian images distribution.

Vocal Bursts Valence Prediction

Symmetric Sparse Boolean Matrix Factorization and Applications

no code implementations2 Feb 2021 Sitan Chen, Zhao Song, Runzhou Tao, Ruizhe Zhang

As this problem is hard in the worst-case, we study a natural average-case variant that arises in the context of these reconstruction attacks: $\mathbf{M} = \mathbf{W}\mathbf{W}^{\top}$ for $\mathbf{W}$ a random Boolean matrix with $k$-sparse rows, and the goal is to recover $\mathbf{W}$ up to column permutation.

Tensor Decomposition

InstaHide's Sample Complexity When Mixing Two Private Images

no code implementations24 Nov 2020 Baihe Huang, Zhao Song, Runzhou Tao, Junze Yin, Ruizhe Zhang, Danyang Zhuo

On the current InstaHide challenge setup, where each InstaHide image is a mixture of two private images, we present a new algorithm to recover all the private images with a provable guarantee and optimal sample complexity.

Vocal Bursts Valence Prediction

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