Search Results for author: Nan Li

Found 83 papers, 10 papers with code

Dynamic Correlation of Market Connectivity, Risk Spillover and Abnormal Volatility in Stock Price

no code implementations28 Mar 2024 Muzi Chen, Nan Li, Lifen Zheng, Difang Huang, Boyao Wu

First, compared with tranquil periods, the SSE A-shares network experiences a more significant small-world and connective effect during the subprime mortgage crisis and the high leverage period in 2015.

Dynamic Semantic Compression for CNN Inference in Multi-access Edge Computing: A Graph Reinforcement Learning-based Autoencoder

no code implementations19 Jan 2024 Nan Li, Alexandros Iosifidis, Qi Zhang

To effectively trade-off communication, computation, and inference accuracy, we design a reward function and formulate the offloading problem of CNN inference as a maximization problem with the goal of maximizing the average inference accuracy and throughput over the long term.

Decision Making Edge-computing +1

Advanced Unstructured Data Processing for ESG Reports: A Methodology for Structured Transformation and Enhanced Analysis

1 code implementation4 Jan 2024 Jiahui Peng, Jing Gao, Xin Tong, Jing Guo, Hang Yang, Jianchuan Qi, Ruiqiao Li, Nan Li, Ming Xu

In the evolving field of corporate sustainability, analyzing unstructured Environmental, Social, and Governance (ESG) reports is a complex challenge due to their varied formats and intricate content.

Empowering Working Memory for Large Language Model Agents

no code implementations22 Dec 2023 Jing Guo, Nan Li, Jianchuan Qi, Hang Yang, Ruiqiao Li, Yuzhen Feng, Si Zhang, Ming Xu

The limitations of traditional LLM memory designs are analyzed, including their isolation of distinct dialog episodes and lack of persistent memory links.

Language Modelling Large Language Model +1

Minimum-Time Trajectory Optimization With Data-Based Models: A Linear Programming Approach

no code implementations10 Dec 2023 Nan Li, Ehsan Taheri, Ilya Kolmanovsky, Dimitar Filev

In this paper, we develop a computationally-efficient approach to minimum-time trajectory optimization using input-output data-based models, to produce an end-to-end data-to-control solution to time-optimal planning/control of dynamic systems and hence facilitate their autonomous operation.

Motion Planning Trajectory Planning +1

OCGEC: One-class Graph Embedding Classification for DNN Backdoor Detection

1 code implementation4 Dec 2023 Haoyu Jiang, Haiyang Yu, Nan Li, Ping Yi

We then pre-train a generative self-supervised graph autoencoder (GAE) to better learn the features of benign models in order to detect backdoor models without knowing the attack strategy.

backdoor defense Graph Embedding +2

Modeling User Viewing Flow Using Large Language Models for Article Recommendation

no code implementations12 Nov 2023 Zhenghao Liu, Zulong Chen, Moufeng Zhang, Shaoyang Duan, Hong Wen, Liangyue Li, Nan Li, Yu Gu, Ge Yu

This paper proposes the User Viewing Flow Modeling (SINGLE) method for the article recommendation task, which models the user constant preference and instant interest from user-clicked articles.

FEIR: Quantifying and Reducing Envy and Inferiority for Fair Recommendation of Limited Resources

1 code implementation8 Nov 2023 Nan Li, Bo Kang, Jefrey Lijffijt, Tijl De Bie

In settings such as e-recruitment and online dating, recommendation involves distributing limited opportunities, calling for novel approaches to quantify and enforce fairness.

Fairness Recommendation Systems

LLM4Jobs: Unsupervised occupation extraction and standardization leveraging Large Language Models

1 code implementation18 Sep 2023 Nan Li, Bo Kang, Tijl De Bie

Automated occupation extraction and standardization from free-text job postings and resumes are crucial for applications like job recommendation and labor market policy formation.

Natural Language Understanding

Introducing Shape Prior Module in Diffusion Model for Medical Image Segmentation

no code implementations12 Sep 2023 Zhiqing Zhang, Guojia Fan, Tianyong Liu, Nan Li, Yuyang Liu, Ziyu Liu, Canwei Dong, Shoujun Zhou

Furthermore, to capture specific anatomical a priori information in medical images, we incorporate a shape a priori module.

Anatomy Anomaly Detection +8

MQENet: A Mesh Quality Evaluation Neural Network Based on Dynamic Graph Attention

no code implementations3 Sep 2023 Haoxuan Zhang, Haisheng Li, Nan Li, Xiaochuan Wang

MQENet treats the mesh evaluation task as a graph classification task for classifying the quality of the input structured mesh.

Graph Attention Graph Classification

Locate and Beamform: Two-dimensional Locating All-neural Beamformer for Multi-channel Speech Separation

no code implementations18 May 2023 Yanjie Fu, Meng Ge, Honglong Wang, Nan Li, Haoran Yin, Longbiao Wang, Gaoyan Zhang, Jianwu Dang, Chengyun Deng, Fei Wang

Recently, stunning improvements on multi-channel speech separation have been achieved by neural beamformers when direction information is available.

Speech Separation

SkillGPT: a RESTful API service for skill extraction and standardization using a Large Language Model

1 code implementation17 Apr 2023 Nan Li, Bo Kang, Tijl De Bie

We present SkillGPT, a tool for skill extraction and standardization (SES) from free-style job descriptions and user profiles with an open-source Large Language Model (LLM) as backbone.

Feature Engineering Language Modelling +1

Learning to Detect and Segment for Open Vocabulary Object Detection

no code implementations CVPR 2023 Tao Wang, Nan Li

With such a conditional design, the detection model is bridged by the semantic embedding to offer strongly generalizable class-wise box and mask prediction.

Object object-detection +1

Image-based Artificial Intelligence empowered surrogate model and shape morpher for real-time blank shape optimisation in the hot stamping process

no code implementations1 Dec 2022 Haosu Zhou, Nan Li

The IAISM, which is based on a Mask-Res-SE-U-Net architecture, is trained to predict the full thinning field of the as-formed component given an arbitrary blank shape.

Semantic Communication Enabling Robust Edge Intelligence for Time-Critical IoT Applications

no code implementations24 Nov 2022 Andrea Cavagna, Nan Li, Alexandros Iosifidis, Qi Zhang

The proposed Edge Intelligence framework consists of the proposed effectiveness encoding and effectiveness decoding.

Image Augmentation

Attention-based Feature Compression for CNN Inference Offloading in Edge Computing

no code implementations24 Nov 2022 Nan Li, Alexandros Iosifidis, Qi Zhang

We design a feature compression module based on the channel attention method in CNN, to compress the intermediate data by selecting the most important features.

Edge-computing Feature Compression

Design and Prototyping Distributed CNN Inference Acceleration in Edge Computing

no code implementations24 Nov 2022 Zhongtian Dong, Nan Li, Alexandros Iosifidis, Qi Zhang

It is shown that the model selection with distributed inference HALP can significantly improve service reliability compared to the conventional stand-alone computation.

Distributed Computing Edge-computing +2

Safe Control and Learning Using Generalized Action Governor

no code implementations22 Nov 2022 Nan Li, Yutong Li, Ilya Kolmanovsky, Anouck Girard, H. Eric Tseng, Dimitar Filev

This paper introduces the Generalized Action Governor, which is a supervisory scheme for augmenting a nominal closed-loop system with the capability of strictly handling constraints.

reinforcement-learning Reinforcement Learning (RL)

Detection of Strongly Lensed Arcs in Galaxy Clusters with Transformers

no code implementations11 Nov 2022 Peng Jia, Ruiqi Sun, Nan Li, Yu Song, Runyu Ning, Hongyan Wei, Rui Luo

We embed prior information of strongly lensed arcs at cluster-scale into the training data through simulation and then train the detection algorithm with simulated images.

Graph Reinforcement Learning-based CNN Inference Offloading in Dynamic Edge Computing

no code implementations24 Oct 2022 Nan Li, Alexandros Iosifidis, Qi Zhang

To solve the maximization problem, we propose a graph reinforcement learning-based early-exit mechanism (GRLE), which outperforms the state-of-the-art work, deep reinforcement learning-based online offloading (DROO) and its enhanced method, DROO with early-exit mechanism (DROOE), under different dynamic scenarios.

Decision Making Edge-computing +2

KG-MTT-BERT: Knowledge Graph Enhanced BERT for Multi-Type Medical Text Classification

no code implementations8 Oct 2022 Yong He, Cheng Wang, Shun Zhang, Nan Li, Zhaorong Li, Zhenyu Zeng

Herein, we develop a new model called KG-MTT-BERT (Knowledge Graph Enhanced Multi-Type Text BERT) by extending the BERT model for long and multi-type text with the integration of the medical knowledge graph.

Question Answering text-classification +1

A challenge-based survey of e-recruitment recommendation systems

no code implementations12 Sep 2022 Yoosof Mashayekhi, Nan Li, Bo Kang, Jefrey Lijffijt, Tijl De Bie

The recommendations are generated based on the suitability of the job seekers for the positions as well as the job seekers' and the recruiters' preferences.

Collaborative Filtering Recommendation Systems

Survey on Evolutionary Deep Learning: Principles, Algorithms, Applications and Open Issues

no code implementations23 Aug 2022 Nan Li, Lianbo Ma, Guo Yu, Bing Xue, Mengjie Zhang, Yaochu Jin

Specifically, we firstly illuminate EDL from machine learning and EC and regard EDL as an optimization problem.

AutoML Feature Engineering

Receptive Field-based Segmentation for Distributed CNN Inference Acceleration in Collaborative Edge Computing

no code implementations22 Jul 2022 Nan Li, Alexandros Iosifidis, Qi Zhang

To reduce the computation time and communication overhead, we propose a novel collaborative edge computing using fused-layer parallelization to partition a CNN model into multiple blocks of convolutional layers.

Edge-computing

Distributed Deep Learning Inference Acceleration using Seamless Collaboration in Edge Computing

no code implementations22 Jul 2022 Nan Li, Alexandros Iosifidis, Qi Zhang

This paper studies inference acceleration using distributed convolutional neural networks (CNNs) in collaborative edge computing.

Edge-computing

Robust Action Governor for Uncertain Piecewise Affine Systems with Non-convex Constraints and Safe Reinforcement Learning

no code implementations17 Jul 2022 Yutong Li, Nan Li, H. Eric Tseng, Anouck Girard, Dimitar Filev, Ilya Kolmanovsky

The action governor is an add-on scheme to a nominal control loop that monitors and adjusts the control actions to enforce safety specifications expressed as pointwise-in-time state and control constraints.

Reinforcement Learning (RL) Safe Reinforcement Learning

Identifying outliers in astronomical images with unsupervised machine learning

no code implementations19 May 2022 Yang Han, Zhiqiang Zou, Nan Li, Yanli Chen

For comparison, we construct three methods, which are built upon the k-nearest neighbors (KNN), Convolutional Auto-Encoder (CAE)+ KNN, and CAE + KNN + Attention Mechanism (attCAE KNN) separately.

Astronomy BIG-bench Machine Learning

Neural Program Synthesis with Query

no code implementations ICLR 2022 Di Huang, Rui Zhang, Xing Hu, Xishan Zhang, Pengwei Jin, Nan Li, Zidong Du, Qi Guo, Yunji Chen

In this work, we propose a query-based framework that trains a query neural network to generate informative input-output examples automatically and interactively from a large query space.

Program Synthesis

Illumination-Invariant Active Camera Relocalization for Fine-Grained Change Detection in the Wild

no code implementations13 Apr 2022 Nan Li, Wei Feng, Qian Zhang

Active camera relocalization (ACR) is a new problem in computer vision that significantly reduces the false alarm caused by image distortions due to camera pose misalignment in fine-grained change detection (FGCD).

Camera Relocalization Change Detection +1

Natural Image Stitching Using Depth Maps

no code implementations13 Feb 2022 Tianli Liao, Nan Li

Then, we draw a triangulation of the target image and estimate multiple local homographies, one per triangle, based on the locations of their vertices, the rectified depth values and the epipolar geometry.

Image Inpainting Image Stitching

Development of a deep learning platform for optimising sheet stamping geometries subject to manufacturing constraints

no code implementations4 Feb 2022 Hamid Reza Attar, Alistair Foster, Nan Li

Manufacturing constraints are imposed based on these distributions and are used to formulate a novel objective function for optimisation.

Interaction-Aware Trajectory Prediction and Planning for Autonomous Vehicles in Forced Merge Scenarios

no code implementations14 Dec 2021 Kaiwen Liu, Nan Li, H. Eric Tseng, Ilya Kolmanovsky, Anouck Girard

Merging is, in general, a challenging task for both human drivers and autonomous vehicles, especially in dense traffic, because the merging vehicle typically needs to interact with other vehicles to identify or create a gap and safely merge into.

Autonomous Vehicles Model Predictive Control +1

Eco-Coasting Strategies Using Road Grade Preview: Evaluation and Online Implementation Based on Mixed Integer Model Predictive Control

no code implementations14 Nov 2021 Yongjun Yan, Nan Li, Jinlong Hong, Bingzhao Gao, Hong Chen, Jing Sun, Ziyou Song

However, the comprehensive comparison between different coasting strategies and online performance of the eco-coasting strategy using road grade preview are still unclear because of the oversimplification and the integer variable in the optimal control problems.

Model Predictive Control

Pareto-wise Ranking Classifier for Multi-objective Evolutionary Neural Architecture Search

no code implementations14 Sep 2021 Lianbo Ma, Nan Li, Guo Yu, Xiaoyu Geng, Min Huang, Xingwei Wang

In the deployment of deep neural models, how to effectively and automatically find feasible deep models under diverse design objectives is fundamental.

Neural Architecture Search

Sensor Adversarial Traits: Analyzing Robustness of 3D Object Detection Sensor Fusion Models

no code implementations13 Sep 2021 Won Park, Nan Li, Qi Alfred Chen, Z. Morley Mao

A critical aspect of autonomous vehicles (AVs) is the object detection stage, which is increasingly being performed with sensor fusion models: multimodal 3D object detection models which utilize both 2D RGB image data and 3D data from a LIDAR sensor as inputs.

3D Object Detection Autonomous Vehicles +3

Cloud-Assisted Nonlinear Model Predictive Control for Finite-Duration Tasks

no code implementations20 Jun 2021 Nan Li, Kaixiang Zhang, Zhaojian Li, Vaibhav Srivastava, Xiang Yin

In this paper, we propose a novel cloud-assisted model predictive control (MPC) framework in which we systematically fuse a cloud MPC that uses a high-fidelity nonlinear model but is subject to communication delays with a local MPC that exploits simplified dynamics (due to limited computation) but has timely feedback.

Cloud Computing Model Predictive Control

Damage accumulation during high temperature fatigue of Ti/SiC$_f$ metal matrix composites under different stress amplitudes

no code implementations26 Feb 2021 Ying Wang, Xu Xu, Wenxia Zhao, Nan Li, Samuel A. McDonald, Yuan Chai, Michael Atkinson, Katherine J. Dobson, Stefan Michalik, Yingwei Fan, Philip J. Withers, Xiaorong Zhou, Timothy L. Burnett

The three-dimensional morphology of the crack and fibre fractures has been mapped by CT. During stable growth, matrix cracking dominates with the crack deflecting (by 50-100 $\mu$m in height) when bypassing bridging fibres.

Computed Tomography (CT) X-Ray Diffraction (XRD) Materials Science Applied Physics

Safe Reinforcement Learning Using Robust Action Governor

no code implementations21 Feb 2021 Yutong Li, Nan Li, H. Eric Tseng, Anouck Girard, Dimitar Filev, Ilya Kolmanovsky

Reinforcement Learning (RL) is essentially a trial-and-error learning procedure which may cause unsafe behavior during the exploration-and-exploitation process.

reinforcement-learning Reinforcement Learning (RL) +1

Some results on transcendental entire solutions of certain nonlinear differential-difference equations

no code implementations4 Feb 2021 Nan Li, Jiachuan Geng, Lianzhong Yang

In this paper, we study the transcendental entire solutions for the nonlinear differential-difference equations of the forms: $f^{2}(z)+\widetilde{\omega} f(z)f'(z)+q(z)e^{Q(z)}f(z+c)=u(z)e^{v(z)}$, and $f^{n}(z)+\omega f^{n-1}(z)f'(z)+q(z)e^{Q(z)}f(z+c)=p_{1}e^{\lambda_{1} z}+p_{2}e^{\lambda_{2} z}, \quad n\geq 3,$ where $\omega$ is a constant, $\widetilde{\omega}, c, \lambda_{1}, \lambda_{2}, p_{1}, p_{2}$ are non-zero constants, $q, Q, u, v$ are polynomials such that $Q, v$ are not constants and $q, u\not\equiv0$.

Complex Variables Primary 30D35, Secondary 39B32

Safe Learning Reference Governor: Theory and Application to Fuel Truck Rollover Avoidance

no code implementations22 Jan 2021 Kaiwen Liu, Nan Li, Ilya Kolmanovsky, Denise Rizzo, Anouck Girard

This paper proposes a learning reference governor (LRG) approach to enforce state and control constraints in systems for which an accurate model is unavailable, and this approach enables the reference governor to gradually improve command tracking performance through learning while enforcing the constraints during learning and after learning is completed.

A study on using image based machine learning methods to develop the surrogate models of stamp forming simulations

no code implementations30 Sep 2020 Haosu Zhou, Qingfeng Xu, Nan Li

It is demonstrated that the IBMLM model is advantageous over the MLP SBMLM model in accuracy, generalizability, robustness, and informativeness.

BIG-bench Machine Learning Informativeness

Maximizing Cumulative User Engagement in Sequential Recommendation: An Online Optimization Perspective

no code implementations2 Jun 2020 Yifei Zhao, Yu-Hang Zhou, Mingdong Ou, Huan Xu, Nan Li

To maximize cumulative user engagement (e. g. cumulative clicks) in sequential recommendation, it is often needed to tradeoff two potentially conflicting objectives, that is, pursuing higher immediate user engagement (e. g., click-through rate) and encouraging user browsing (i. e., more items exposured).

Sequential Recommendation

A Neural Architecture Search based Framework for Liquid State Machine Design

no code implementations7 Apr 2020 Shuo Tian, Lianhua Qu, Kai Hu, Nan Li, Lei Wang, Weixia Xu

By exploring the design space in network architectures and parameters, recent works have demonstrated great potential for improving the accuracy of LSM model with low complexity.

Neural Architecture Search

ReADS: A Rectified Attentional Double Supervised Network for Scene Text Recognition

no code implementations5 Apr 2020 Qi Song, Qianyi Jiang, Nan Li, Rui Zhang, Xiaolin Wei

In this paper, we elaborately design a Rectified Attentional Double Supervised Network (ReADS) for general scene text recognition.

Scene Text Recognition valid

Identifying Strong Lenses with Unsupervised Machine Learning using Convolutional Autoencoder

no code implementations11 Nov 2019 Ting-Yun Cheng, Nan Li, Christopher J. Conselice, Alfonso Aragón-Salamanca, Simon Dye, Robert B. Metcalf

Our method successfully picks up $\sim$63\ percent of lensing images from all lenses in the training set.

Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

Game-theoretic Modeling of Traffic in Unsignalized Intersection Network for Autonomous Vehicle Control Verification and Validation

no code implementations16 Oct 2019 Ran Tian, Nan Li, Ilya Kolmanovsky, Yildiray Yildiz, Anouck Girard

For a foreseeable future, autonomous vehicles (AVs) will operate in traffic together with human-driven vehicles.

Robotics Systems and Control Systems and Control

Beating humans in a penny-matching game by leveraging cognitive hierarchy theory and Bayesian learning

no code implementations27 Sep 2019 Ran Tian, Nan Li, Ilya Kolmanovsky, Anouck Girard

It is a long-standing goal of artificial intelligence (AI) to be superior to human beings in decision making.

Decision Making

Off-road Autonomous Vehicles Traversability Analysis and Trajectory Planning Based on Deep Inverse Reinforcement Learning

no code implementations16 Sep 2019 Zeyu Zhu, Nan Li, Ruoyu Sun, Huijing Zhao, Donghao Xu

Different cost functions of traversability analysis are learned and tested at various scenes of capability in guiding the trajectory planning of different behaviors.

Autonomous Vehicles reinforcement-learning +2

End-to-End Learnable Geometric Vision by Backpropagating PnP Optimization

2 code implementations CVPR 2020 Bo Chen, Alvaro Parra, Jiewei Cao, Nan Li, Tat-Jun Chin

To seamlessly combine deep learning and geometric vision, it is vital to perform learning and geometric optimization end-to-end.

 Ranked #1 on 6D Pose Estimation using RGB on LineMOD (Accuracy metric)

6D Pose Estimation 6D Pose Estimation using RGB

Adaptive Game-Theoretic Decision Making for Autonomous Vehicle Control at Roundabouts

no code implementations1 Oct 2018 Ran Tian, Sisi Li, Nan Li, Ilya Kolmanovsky, Anouck Girard, Yildiray Yildiz

In this paper, we propose a decision making algorithm for autonomous vehicle control at a roundabout intersection.

Decision Making

An Attention-Based Approach for Single Image Super Resolution

no code implementations18 Jul 2018 Yuan Liu, Yuancheng Wang, Nan Li, Xu Cheng, Yifeng Zhang, Yongming Huang, Guojun Lu

We propose an attention-based approach to give a discrimination between texture areas and smooth areas.

Image Super-Resolution

Multinomial Logit Bandit with Linear Utility Functions

no code implementations8 May 2018 Mingdong Ou, Nan Li, Shenghuo Zhu, Rong Jin

In each round, the player selects a $K$-cardinality subset from $N$ candidate items, and receives a reward which is governed by a {\it multinomial logit} (MNL) choice model considering both item utility and substitution property among items.

Advancing Tabu and Restart in Local Search for Maximum Weight Cliques

no code implementations22 Apr 2018 Yi Fan, Nan Li, Chengqian Li, Zongjie Ma, Longin Jan Latecki, Kaile Su

Our new restart strategy is based on the re-occurrence of a local search scenario instead of that of a candidate solution.

Graph-based Hypothesis Generation for Parallax-tolerant Image Stitching

no code implementations20 Apr 2018 Jing Chen, Nan Li, Tianli Liao

The seam-driven approach has been proven fairly effective for parallax-tolerant image stitching, whose strategy is to search for an invisible seam from finite representative hypotheses of local alignment.

Image Stitching

Single-Perspective Warps in Natural Image Stitching

1 code implementation13 Feb 2018 Tianli Liao, Nan Li

Results of image stitching can be perceptually divided into single-perspective and multiple-perspective.

Image Stitching Total Energy

tau-FPL: Tolerance-Constrained Learning in Linear Time

no code implementations15 Jan 2018 Ao Zhang, Nan Li, Jian Pu, Jun Wang, Junchi Yan, Hongyuan Zha

Learning a classifier with control on the false-positive rate plays a critical role in many machine learning applications.

Mapping the world population one building at a time

no code implementations15 Dec 2017 Tobias G. Tiecke, Xian-Ming Liu, Amy Zhang, Andreas Gros, Nan Li, Gregory Yetman, Talip Kilic, Siobhan Murray, Brian Blankespoor, Espen B. Prydz, Hai-Anh H. Dang

Obtaining high accuracy in estimation of population distribution in rural areas remains a very challenging task due to the simultaneous requirements of sufficient sensitivity and resolution to detect very sparse populations through remote sensing as well as reliable performance at a global scale.

Disaster Response

Open-Category Classification by Adversarial Sample Generation

no code implementations24 May 2017 Yang Yu, Wei-Yang Qu, Nan Li, Zimin Guo

ASG generates positive and negative samples of seen categories in the unsupervised manner via an adversarial learning strategy.

Classification General Classification

CMU DeepLens: Deep Learning For Automatic Image-based Galaxy-Galaxy Strong Lens Finding

1 code implementation8 Mar 2017 Francois Lanusse, Quanbin Ma, Nan Li, Thomas E. Collett, Chun-Liang Li, Siamak Ravanbakhsh, Rachel Mandelbaum, Barnabas Poczos

We find on our simulated data set that for a rejection rate of non-lenses of 99%, a completeness of 90% can be achieved for lenses with Einstein radii larger than 1. 4" and S/N larger than 20 on individual $g$-band LSST exposures.

Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

Quasi-homography warps in image stitching

no code implementations27 Jan 2017 Nan Li, Yifang Xu, Chao Wang

The naturalness of warps is gaining extensive attentions in image stitching.

Image Stitching

Perception-based energy functions in seam-cutting

no code implementations22 Jan 2017 Nan Li, Tianli Liao, Chao Wang

In this paper, we propose a novel perception-based energy function in the seam-cutting framework, which considers the nonlinearity and the nonuniformity of human perception in energy minimization.

Image Stitching

Game-Theoretic Modeling of Driver and Vehicle Interactions for Verification and Validation of Autonomous Vehicle Control Systems

no code implementations30 Aug 2016 Nan Li, Dave Oyler, Mengxuan Zhang, Yildiray Yildiz, Ilya Kolmanovsky, Anouck Girard

Traffic simulators where these interactions can be modeled and represented with reasonable fidelity can help decrease the time and effort necessary for the development of the autonomous driving control algorithms by providing a venue where acceptable initial control calibrations can be achieved quickly and safely before actual road tests.

Autonomous Driving

Transductive Optimization of Top k Precision

no code implementations20 Oct 2015 Li-Ping Liu, Thomas G. Dietterich, Nan Li, Zhi-Hua Zhou

This paper introduces a new approach, Transductive Top K (TTK), that seeks to minimize the hinge loss over all training instances under the constraint that exactly $k$ test instances are predicted as positive.

Binary Classification Information Retrieval +1

Top Rank Optimization in Linear Time

no code implementations NeurIPS 2014 Nan Li, Rong Jin, Zhi-Hua Zhou

Recent efforts of bipartite ranking are focused on optimizing ranking accuracy at the top of the ranked list.

Capturing "attrition intensifying" structural traits from didactic interaction sequences of MOOC learners

no code implementations WS 2014 Tanmay Sinha, Nan Li, Patrick Jermann, Pierre Dillenbourg

This work is an attempt to discover hidden structural configurations in learning activity sequences of students in Massive Open Online Courses (MOOCs).

Your click decides your fate: Inferring Information Processing and Attrition Behavior from MOOC Video Clickstream Interactions

no code implementations WS 2014 Tanmay Sinha, Patrick Jermann, Nan Li, Pierre Dillenbourg

In this work, we explore video lecture interaction in Massive Open Online Courses (MOOCs), which is central to student learning experience on these educational platforms.

Estimation of genomic characteristics by analyzing k-mer frequency in de novo genome projects

2 code implementations9 Aug 2013 Binghang Liu, Yujian Shi, Jianying Yuan, Xuesong Hu, Hao Zhang, Nan Li, Zhenyu Li, Yanxiang Chen, Desheng Mu, Wei Fan

Therefore, it is necessary to develop efficient assembly-independent methods for accurate estimation of these genomic characteristics.

Clustering Aggregation as Maximum-Weight Independent Set

no code implementations NeurIPS 2012 Nan Li, Longin J. Latecki

Since the clusters of each input clustering form a partition of the dataset, the vertices corresponding to each clustering form a maximal independent set (MIS) in the attributed graph.

Clustering

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