Search Results for author: Lin Xu

Found 29 papers, 5 papers with code

Chain of Thought Explanation for Dialogue State Tracking

no code implementations7 Mar 2024 Lin Xu, Ningxin Peng, Daquan Zhou, See-Kiong Ng, Jinlan Fu

Dialogue state tracking (DST) aims to record user queries and goals during a conversational interaction achieved by maintaining a predefined set of slots and their corresponding values.

Dialogue State Tracking

CET2: Modelling Topic Transitions for Coherent and Engaging Knowledge-Grounded Conversations

no code implementations4 Mar 2024 Lin Xu, Qixian Zhou, Jinlan Fu, See-Kiong Ng

Knowledge-grounded dialogue systems aim to generate coherent and engaging responses based on the dialogue contexts and selected external knowledge.

valid

MAgIC: Investigation of Large Language Model Powered Multi-Agent in Cognition, Adaptability, Rationality and Collaboration

1 code implementation14 Nov 2023 Lin Xu, Zhiyuan Hu, Daquan Zhou, Hongyu Ren, Zhen Dong, Kurt Keutzer, See Kiong Ng, Jiashi Feng

Large Language Models (LLMs) have marked a significant advancement in the field of natural language processing, demonstrating exceptional capabilities in reasoning, tool usage, and memory.

Benchmarking Language Modelling +1

Hyp-UML: Hyperbolic Image Retrieval with Uncertainty-aware Metric Learning

no code implementations12 Oct 2023 ShiYang Yan, Zongxuan Liu, Lin Xu

Compared to the conventional Euclidean embedding in most of the previously developed models, Hyperbolic embedding can be more effective in representing the hierarchical data structure.

Contrastive Learning Image Retrieval +3

CorefDiffs: Co-referential and Differential Knowledge Flow in Document Grounded Conversations

no code implementations COLING 2022 Lin Xu, Qixian Zhou, Jinlan Fu, Min-Yen Kan, See-Kiong Ng

Knowledge-grounded dialog systems need to incorporate smooth transitions among knowledge selected for generating responses, to ensure that dialog flows naturally.

Management

PhD Learning: Learning With Pompeiu-Hausdorff Distances for Video-Based Vehicle Re-Identification

1 code implementation CVPR 2021 Jianan Zhao, Fengliang Qi, Guangyu Ren, Lin Xu

Vehicle re-identification (re-ID) is of great significance to urban operation, management, security and has gained more attention in recent years.

Management Vehicle Re-Identification

2nd Place Solution for IJCAI-PRICAI 2020 3D AI Challenge: 3D Object Reconstruction from A Single Image

no code implementations28 May 2021 Yichen Cao, Yufei Wei, Shichao Liu, Lin Xu

In this paper, we present our solution for the {\it IJCAI--PRICAI--20 3D AI Challenge: 3D Object Reconstruction from A Single Image}.

3D Object Reconstruction From A Single Image

EMface: Detecting Hard Faces by Exploring Receptive Field Pyraminds

no code implementations21 May 2021 Leilei Cao, Yao Xiao, Lin Xu

Modern face detectors employ feature pyramids to deal with scale variation.

Face Detection

IDEAL: Independent Domain Embedding Augmentation Learning

no code implementations21 May 2021 ZhiYuan Chen, Guang Yao, Wennan Ma, Lin Xu

Our IDEAL with MS loss also achieves the new state-of-the-art performance on three image retrieval benchmarks, \ie, \emph{Cars-196}, \emph{CUB-200}, and \emph{SOP}.

Image Retrieval Metric Learning +1

Premise-based Multimodal Reasoning: Conditional Inference on Joint Textual and Visual Clues

no code implementations ACL 2022 Qingxiu Dong, Ziwei Qin, Heming Xia, Tian Feng, Shoujie Tong, Haoran Meng, Lin Xu, Weidong Zhan, Sujian Li, Zhongyu Wei, Tianyu Liu, Zuifang Sui

It is a common practice for recent works in vision language cross-modal reasoning to adopt a binary or multi-choice classification formulation taking as input a set of source image(s) and textual query.

Multimodal Reasoning Natural Language Inference +1

Unifying Relational Sentence Generation and Retrieval for Medical Image Report Composition

no code implementations9 Jan 2021 Fuyu Wang, Xiaodan Liang, Lin Xu, Liang Lin

Beyond generating long and topic-coherent paragraphs in traditional captioning tasks, the medical image report composition task poses more task-oriented challenges by requiring both the highly-accurate medical term diagnosis and multiple heterogeneous forms of information including impression and findings.

Retrieval Sentence

Diversity Augmented Conditional Generative Adversarial Network for Enhanced Multimodal Image-to-Image Translation

no code implementations1 Jan 2021 Yunlong MENG, Lin Xu

We propose Diversity Augmented conditional Generative Adversarial Network (DivAugGAN), a highly effective solution to further resolve the mode collapse problem and enhance the diversity for the generated images.

Generative Adversarial Network Image-to-Image Translation +1

Towards a Reliable and Robust Dialogue System for Medical Automatic Diagnosis

no code implementations1 Jan 2021 Junfan Lin, Lin Xu, Ziliang Chen, Liang Lin

To this end, we propose a novel DSMAD agent, INS-DS (Introspective Diagnosis System) comprising of two separate yet cooperative modules, i. e., an inquiry module for proposing symptom-inquiries and an introspective module for deciding when to inform a disease.

Decision Making

Polarimetric SAR Image Semantic Segmentation with 3D Discrete Wavelet Transform and Markov Random Field

no code implementations5 Aug 2020 Haixia Bi, Lin Xu, Xiangyong Cao, Yong Xue, Zongben Xu

Polarimetric synthetic aperture radar (PolSAR) image segmentation is currently of great importance in image processing for remote sensing applications.

Image Segmentation Segmentation +1

A Preliminary Study on Optimal Placement of Cameras

no code implementations26 Oct 2019 Lin Xu

This paper primarily focuses on figuring out the best array of cameras, or visual sensors, so that such a placement enables the maximum utilization of these visual sensors.

Detection and Classification of Breast Cancer Metastates Based on U-Net

no code implementations9 Sep 2019 Lin Xu, Cheng Xu, Yi Tong, Yu Chun Su

This paper presents U-net based breast cancer metastases detection and classification in lymph nodes, as well as patient-level classification based on metastases detection.

Classification General Classification

DaTscan SPECT Image Classification for Parkinson's Disease

no code implementations9 Sep 2019 Justin Quan, Lin Xu, Rene Xu, Tyrael Tong, Jean Su

Human visual analysis is slow and vulnerable to subjectivity between radiologists, so the goal was to develop an introductory implementation of a deep convolutional neural network that can objectively and accurately classify DaTscan SPECT images as Parkinson's Disease or normal.

Classification General Classification +3

HorNet: A Hierarchical Offshoot Recurrent Network for Improving Person Re-ID via Image Captioning

no code implementations14 Aug 2019 Shi-Yang Yan, Jun Xu, Yuai Liu, Lin Xu

Then the proposed HorNet can learn the visual and language representation from both the images and captions jointly, and thus enhance the performance of person re-ID.

Generative Adversarial Network Image Captioning +1

End-to-End Knowledge-Routed Relational Dialogue System for Automatic Diagnosis

1 code implementation30 Jan 2019 Lin Xu, Qixian Zhou, Ke Gong, Xiaodan Liang, Jianheng Tang, Liang Lin

Besides the challenges for conversational dialogue systems (e. g. topic transition coherency and question understanding), automatic medical diagnosis further poses more critical requirements for the dialogue rationality in the context of medical knowledge and symptom-disease relations.

Decision Making Dialogue Management +5

Hyperspectral Image Classification with Markov Random Fields and a Convolutional Neural Network

1 code implementation1 May 2017 Xiangyong Cao, Feng Zhou, Lin Xu, Deyu Meng, Zongben Xu, John Paisley

This paper presents a new supervised classification algorithm for remotely sensed hyperspectral image (HSI) which integrates spectral and spatial information in a unified Bayesian framework.

Ranked #13 on Hyperspectral Image Classification on Indian Pines (Overall Accuracy metric, using extra training data)

Classification General Classification +1

Incremental Network Quantization: Towards Lossless CNNs with Low-Precision Weights

3 code implementations10 Feb 2017 Aojun Zhou, Anbang Yao, Yiwen Guo, Lin Xu, Yurong Chen

The weights in the other group are responsible to compensate for the accuracy loss from the quantization, thus they are the ones to be re-trained.

Quantization

Greedy Criterion in Orthogonal Greedy Learning

no code implementations20 Apr 2016 Lin Xu, Shao-Bo Lin, Jinshan Zeng, Xia Liu, Zongben Xu

In this paper, we find that SGD is not the unique greedy criterion and introduce a new greedy criterion, called "$\delta$-greedy threshold" for learning.

Shrinkage degree in $L_2$-re-scale boosting for regression

no code implementations17 May 2015 Lin Xu, Shao-Bo Lin, Yao Wang, Zongben Xu

Re-scale boosting (RBoosting) is a variant of boosting which can essentially improve the generalization performance of boosting learning.

regression

Re-scale boosting for regression and classification

no code implementations6 May 2015 Shaobo Lin, Yao Wang, Lin Xu

Boosting is a learning scheme that combines weak prediction rules to produce a strong composite estimator, with the underlying intuition that one can obtain accurate prediction rules by combining "rough" ones.

Classification General Classification +1

Greedy metrics in orthogonal greedy learning

no code implementations13 Nov 2014 Lin Xu, Shaobo Lin, Jinshan Zeng, Zongben Xu

Orthogonal greedy learning (OGL) is a stepwise learning scheme that adds a new atom from a dictionary via the steepest gradient descent and build the estimator via orthogonal projecting the target function to the space spanned by the selected atoms in each greedy step.

Model Selection

Algorithm Runtime Prediction: Methods & Evaluation

no code implementations5 Nov 2012 Frank Hutter, Lin Xu, Holger H. Hoos, Kevin Leyton-Brown

We also comprehensively describe new and existing features for predicting algorithm runtime for propositional satisfiability (SAT), travelling salesperson (TSP) and mixed integer programming (MIP) problems.

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