Search Results for author: Qin Zhang

Found 41 papers, 3 papers with code

LLMs Instruct LLMs:An Extraction and Editing Method

no code implementations23 Mar 2024 Xin Zhang, Tianjie Ju, Huijia Liang, Ying Fu, Qin Zhang

The interest in updating Large Language Models (LLMs) without retraining from scratch is substantial, yet it comes with some challenges. This is especially true for situations demanding complex reasoning with limited samples, a scenario we refer to as the Paucity-Constrained Complex Reasoning Adaptation for LLMs (PCRA-LLM). Traditional methods like Low-Rank Adaptation (LoRA) and Retrieval-Augmented Generation (RAG) are inadequate for this critical issue, particularly evident in our exploration of a specific medical context that epitomize the PCRA-LLM's distinct needs. To address the issue, we propose a Sequential Fusion method to incorporate knowledge from complex context into LLMs.

Knowledge Graphs Question Answering

ROG$_{PL}$: Robust Open-Set Graph Learning via Region-Based Prototype Learning

no code implementations28 Feb 2024 Qin Zhang, Xiaowei Li, Jiexin Lu, Liping Qiu, Shirui Pan, Xiaojun Chen, Junyang Chen

In specific, ROG$_{PL}$ consists of two modules, i. e., denoising via label propagation and open-set prototype learning via regions.

Denoising Graph Learning +2

Unsupervised multiple choices question answering via universal corpus

no code implementations27 Feb 2024 Qin Zhang, Hao Ge, Xiaojun Chen, Meng Fang

Unsupervised question answering is a promising yet challenging task, which alleviates the burden of building large-scale annotated data in a new domain.

Knowledge Graphs Multiple-choice +1

Graph Learning under Distribution Shifts: A Comprehensive Survey on Domain Adaptation, Out-of-distribution, and Continual Learning

no code implementations26 Feb 2024 Man Wu, Xin Zheng, Qin Zhang, Xiao Shen, Xiong Luo, Xingquan Zhu, Shirui Pan

Graph learning plays a pivotal role and has gained significant attention in various application scenarios, from social network analysis to recommendation systems, for its effectiveness in modeling complex data relations represented by graph structural data.

Continual Learning Domain Adaptation +2

Affordable Generative Agents

1 code implementation3 Feb 2024 Yangbin Yu, Qin Zhang, Junyou Li, Qiang Fu, Deheng Ye

The emergence of large language models (LLMs) has significantly advanced the simulation of believable interactive agents.

More Agents Is All You Need

no code implementations3 Feb 2024 Junyou Li, Qin Zhang, Yangbin Yu, Qiang Fu, Deheng Ye

We find that, simply via a sampling-and-voting method, the performance of large language models (LLMs) scales with the number of agents instantiated.

Multi-level Cross-modal Alignment for Image Clustering

no code implementations22 Jan 2024 Liping Qiu, Qin Zhang, Xiaojun Chen, Shaotian Cai

Recently, the cross-modal pretraining model has been employed to produce meaningful pseudo-labels to supervise the training of an image clustering model.

Clustering Image Clustering

How Does China's Household Portfolio Selection Vary with Financial Inclusion?

no code implementations2 Nov 2023 Yong Bian, Xiqian Wang, Qin Zhang

Portfolio underdiversification is one of the most costly losses accumulated over a household's life cycle.

Threshold-Consistent Margin Loss for Open-World Deep Metric Learning

no code implementations8 Jul 2023 Qin Zhang, Linghan Xu, Qingming Tang, Jun Fang, Ying Nian Wu, Joe Tighe, Yifan Xing

Existing losses used in deep metric learning (DML) for image retrieval often lead to highly non-uniform intra-class and inter-class representation structures across test classes and data distributions.

Image Retrieval Metric Learning +1

Learning for Transductive Threshold Calibration in Open-World Recognition

no code implementations19 May 2023 Qin Zhang, Dongsheng An, Tianjun Xiao, Tong He, Qingming Tang, Ying Nian Wu, Joseph Tighe, Yifan Xing, Stefano Soatto

In deep metric learning for visual recognition, the calibration of distance thresholds is crucial for achieving desired model performance in the true positive rates (TPR) or true negative rates (TNR).

Metric Learning Open Set Learning

Auto-HeG: Automated Graph Neural Network on Heterophilic Graphs

no code implementations23 Feb 2023 Xin Zheng, Miao Zhang, Chunyang Chen, Qin Zhang, Chuan Zhou, Shirui Pan

Therefore, in this paper, we propose a novel automated graph neural network on heterophilic graphs, namely Auto-HeG, to automatically build heterophilic GNN models with expressive learning abilities.

Graph Learning Neural Architecture Search

Communication-Efficient Collaborative Regret Minimization in Multi-Armed Bandits

no code implementations26 Jan 2023 Nikolai Karpov, Qin Zhang

In this paper, we study the collaborative learning model, which concerns the tradeoff between parallelism and communication overhead in multi-agent multi-armed bandits.

Multi-agent Reinforcement Learning Multi-Armed Bandits +2

Lightweight Monocular Depth Estimation

no code implementations21 Dec 2022 Ruilin Ma, Shiyao Chen, Qin Zhang

Monocular depth estimation can play an important role in addressing the issue of deriving scene geometry from 2D images.

Image Segmentation Monocular Depth Estimation +2

Evaluating Model-free Reinforcement Learning toward Safety-critical Tasks

no code implementations12 Dec 2022 Linrui Zhang, Qin Zhang, Li Shen, Bo Yuan, Xueqian Wang, DaCheng Tao

Despite a large number of reinforcement learning (RL) methods focusing on safety-critical tasks, there is still a lack of high-quality evaluation of those algorithms that adheres to safety constraints at each decision step under complex and unknown dynamics.

Autonomous Driving reinforcement-learning +2

Semantic-Enhanced Image Clustering

no code implementations21 Aug 2022 Shaotian Cai, Liping Qiu, Xiaojun Chen, Qin Zhang, Longteng Chen

In this paper, we propose to investigate the task of image clustering with the help of a visual-language pre-training model.

Clustering Image Clustering +1

Communication-Efficient Collaborative Best Arm Identification

no code implementations18 Aug 2022 Nikolai Karpov, Qin Zhang

We investigate top-$m$ arm identification, a basic problem in bandit theory, in a multi-agent learning model in which agents collaborate to learn an objective function.

Parallel Best Arm Identification in Heterogeneous Environments

no code implementations16 Jul 2022 Nikolai Karpov, Qin Zhang

In this paper, we study the tradeoffs between the time and the number of communication rounds of the best arm identification problem in the heterogeneous collaborative learning model, where multiple agents interact with possibly different environments and they want to learn in parallel an objective function in the aggregated environment.

Multi-Armed Bandits

SafeRL-Kit: Evaluating Efficient Reinforcement Learning Methods for Safe Autonomous Driving

1 code implementation17 Jun 2022 Linrui Zhang, Qin Zhang, Li Shen, Bo Yuan, Xueqian Wang

Safe reinforcement learning (RL) has achieved significant success on risk-sensitive tasks and shown promise in autonomous driving (AD) as well.

Autonomous Driving reinforcement-learning +2

Unsupervised Quantized Prosody Representation for Controllable Speech Synthesis

no code implementations7 Apr 2022 Yutian Wang, Yuankun Xie, Kun Zhao, Hui Wang, Qin Zhang

In this paper, we propose a novel prosody disentangle method for prosodic Text-to-Speech (TTS) model, which introduces the vector quantization (VQ) method to the auxiliary prosody encoder to obtain the decomposed prosody representations in an unsupervised manner.

Quantization Speech Synthesis

Deep Unsupervised Hashing with Latent Semantic Components

no code implementations17 Mar 2022 Qinghong Lin, Xiaojun Chen, Qin Zhang, Shaotian Cai, Wenzhe Zhao, Hongfa Wang

Firstly, DSCH constructs a semantic component structure by uncovering the fine-grained semantics components of images with a Gaussian Mixture Modal~(GMM), where an image is represented as a mixture of multiple components, and the semantics co-occurrence are exploited.

Common Sense Reasoning Image Retrieval +1

A Two-stage Complex Network using Cycle-consistent Generative Adversarial Networks for Speech Enhancement

no code implementations5 Sep 2021 Guochen Yu, Yutian Wang, Hui Wang, Qin Zhang, Chengshi Zheng

After that, the second stage is applied to further suppress the residual noise components and estimate the clean phase by a complex spectral mapping network, which is a pure complex-valued network composed of complex 2D convolution/deconvolution and complex temporal-frequency attention blocks.

Denoising Speech Enhancement

Learning to Cluster via Same-Cluster Queries

no code implementations17 Aug 2021 Yi Li, Yan Song, Qin Zhang

We study the problem of learning to cluster data points using an oracle which can answer same-cluster queries.

Deep Self-Adaptive Hashing for Image Retrieval

no code implementations16 Aug 2021 Qinghong Lin, Xiaojun Chen, Qin Zhang, Shangxuan Tian, Yudong Chen

Secondly, we measure the priorities of data pairs with PIC and assign adaptive weights to them, which is relies on the assumption that more dissimilar data pairs contain more discriminative information for hash learning.

Deep Hashing Image Retrieval

Batched Thompson Sampling for Multi-Armed Bandits

no code implementations15 Aug 2021 Nikolai Karpov, Qin Zhang

We study Thompson Sampling algorithms for stochastic multi-armed bandits in the batched setting, in which we want to minimize the regret over a sequence of arm pulls using a small number of policy changes (or, batches).

Multi-Armed Bandits Thompson Sampling

Instance-Sensitive Algorithms for Pure Exploration in Multinomial Logit Bandit

no code implementations2 Dec 2020 Nikolai Karpov, Qin Zhang

Motivated by real-world applications such as fast fashion retailing and online advertising, the Multinomial Logit Bandit (MNL-bandit) is a popular model in online learning and operations research, and has attracted much attention in the past decade.

Batched Coarse Ranking in Multi-Armed Bandits

no code implementations NeurIPS 2020 Nikolai Karpov, Qin Zhang

We study the problem of coarse ranking in the multi-armed bandits (MAB) setting, where we have a set of arms each of which is associated with an unknown distribution.

Multi-Armed Bandits

A New Inference algorithm of Dynamic Uncertain Causality Graph based on Conditional Sampling Method for Complex Cases

no code implementations6 Nov 2020 Hao Nie, Qin Zhang

In the situation of clinical diagnoses, when a lot of intermediate causes are unknown while the downstream results are known in a DUCG graph, the combination explosion may appear during the inference computation.

Multinomial Logit Bandit with Low Switching Cost

no code implementations ICML 2020 Kefan Dong, Yingkai Li, Qin Zhang, Yuan Zhou

We also present the ESUCB algorithm with item switching cost $O(N \log^2 T)$.

Collaborative Top Distribution Identifications with Limited Interaction

no code implementations20 Apr 2020 Nikolai Karpov, Qin Zhang, Yuan Zhou

We give optimal time-round tradeoffs, as well as demonstrate complexity separations between top-$1$ arm identification and top-$m$ arm identifications for general $m$ and between fixed-time and fixed-confidence variants.

Collaborative Learning with Limited Interaction: Tight Bounds for Distributed Exploration in Multi-Armed Bandits

no code implementations5 Apr 2019 Chao Tao, Qin Zhang, Yuan Zhou

Best arm identification (or, pure exploration) in multi-armed bandits is a fundamental problem in machine learning.

Multi-Armed Bandits

Distinct Sampling on Streaming Data with Near-Duplicates

no code implementations29 Oct 2018 Jiecao Chen, Qin Zhang

In this paper we study how to perform distinct sampling in the streaming model where data contain near-duplicates.

Data Structures and Algorithms

A Practical Algorithm for Distributed Clustering and Outlier Detection

no code implementations NeurIPS 2018 Jiecao Chen, Erfan Sadeqi Azer, Qin Zhang

We study the classic $k$-means/median clustering, which are fundamental problems in unsupervised learning, in the setting where data are partitioned across multiple sites, and where we are allowed to discard a small portion of the data by labeling them as outliers.

Clustering Outlier Detection

Tight Bounds for Collaborative PAC Learning via Multiplicative Weights

no code implementations NeurIPS 2018 Jiecao Chen, Qin Zhang, Yuan Zhou

We study the collaborative PAC learning problem recently proposed in Blum et al.~\cite{BHPQ17}, in which we have $k$ players and they want to learn a target function collaboratively, such that the learned function approximates the target function well on all players' distributions simultaneously.

PAC learning

Adaptive Multiple-Arm Identification

no code implementations ICML 2017 Jiecao Chen, Xi Chen, Qin Zhang, Yuan Zhou

We study the problem of selecting $K$ arms with the highest expected rewards in a stochastic $n$-armed bandit game.

Communication-Optimal Distributed Clustering

no code implementations NeurIPS 2016 Jiecao Chen, He Sun, David P. Woodruff, Qin Zhang

We would like the quality of the clustering in the distributed setting to match that in the centralized setting for which all the data resides on a single site.

Clustering

EmbedJoin: Efficient Edit Similarity Joins via Embeddings

1 code implementation1 Feb 2017 Haoyu Zhang, Qin Zhang

Edit similarity join is a fundamental problem in data cleaning/integration, bioinformatics, collaborative filtering and natural language processing, and has been identified as a primitive operator for database systems.

Databases

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