Search Results for author: Fuxin Li

Found 25 papers, 3 papers with code

Space Time Recurrent Memory Network

no code implementations14 Sep 2021 Hung Nguyen, Chanho Kim, Fuxin Li

We propose a novel visual memory network architecture for the learning and inference problem in the spatial-temporal domain.

Semantic Segmentation Video Object Segmentation +2

Counterfactual State Explanations for Reinforcement Learning Agents via Generative Deep Learning

1 code implementation29 Jan 2021 Matthew L. Olson, Roli Khanna, Lawrence Neal, Fuxin Li, Weng-Keen Wong

Our second user study investigates if counterfactual state explanations can help non-expert participants identify a flawed agent; we compare against a baseline approach based on a nearest neighbor explanation which uses images from the actual game.

counterfactual reinforcement-learning +1

iGOS++: Integrated Gradient Optimized Saliency by Bilateral Perturbations

2 code implementations31 Dec 2020 Saeed Khorram, Tyler Lawson, Fuxin Li

In this paper, we present iGOS++, a framework to generate saliency maps that are optimized for altering the output of the black-box system by either removing or preserving only a small fraction of the input.

Counterfactual States for Atari Agents via Generative Deep Learning

no code implementations27 Sep 2019 Matthew L. Olson, Lawrence Neal, Fuxin Li, Weng-Keen Wong

In this work, we introduce the concept of a counterfactual state to help humans gain a better understanding of what would need to change (minimally) in an Atari game image for the agent to choose a different action.

counterfactual Decision Making

Interactive Naming for Explaining Deep Neural Networks: A Formative Study

no code implementations18 Dec 2018 Mandana Hamidi-Haines, Zhongang Qi, Alan Fern, Fuxin Li, Prasad Tadepalli

For this purpose, we developed a user interface for "interactive naming," which allows a human annotator to manually cluster significant activation maps in a test set into meaningful groups called "visual concepts".

General Classification

Open Set Learning with Counterfactual Images

no code implementations ECCV 2018 Lawrence Neal, Matthew Olson, Xiaoli Fern, Weng-Keen Wong, Fuxin Li

In open set recognition, a classifier must label instances of known classes while detecting instances of unknown classes not encountered during training.

Classification counterfactual +4

Multi-object Tracking with Neural Gating Using Bilinear LSTM

no code implementations ECCV 2018 Chanho Kim, Fuxin Li, James M. Rehg

We also propose novel data augmentation approaches to efficiently train recurrent models that score object tracks on both appearance and motion.

Data Augmentation Multi-Object Tracking +3

Purely Geometric Scene Association and Retrieval - A Case for Macro Scale 3D Geometry

no code implementations3 Aug 2018 Rahul Sawhney, Fuxin Li, Henrik I. Christensen, Charles L. Isbell

We show how it can be employed to select a diverse set of data frames which have structurally similar content, and how to validate whether views with similar geometric content are from the same scene.

Retrieval

The morphodynamics of 3D migrating cancer cells

1 code implementation27 Jul 2018 Christopher Z. Eddy, Xinyao Wang, Fuxin Li, Bo Sun

As a result, cell morphodynamics is mapped into temporal evolution of morphological phenotypes.

Embedding Deep Networks into Visual Explanations

no code implementations15 Sep 2017 Zhongang Qi, Saeed Khorram, Fuxin Li

The XNN works by learning a nonlinear embedding of a high-dimensional activation vector of a deep network layer into a low-dimensional explanation space while retaining faithfulness i. e., the original deep learning predictions can be constructed from the few concepts extracted by our explanation network.

Image Classification

Boundary Flow: A Siamese Network that Predicts Boundary Motion without Training on Motion

no code implementations CVPR 2018 Peng Lei, Fuxin Li, Sinisa Todorovic

Using deep learning, this paper addresses the problem of joint object boundary detection and boundary motion estimation in videos, which we named boundary flow estimation.

Boundary Detection Motion Estimation +2

A Continuous Optimization Approach for Efficient and Accurate Scene Flow

no code implementations27 Jul 2016 Zhaoyang Lv, Chris Beall, Pablo F. Alcantarilla, Fuxin Li, Zsolt Kira, Frank Dellaert

We propose a continuous optimization method for solving dense 3D scene flow problems from stereo imagery.

Position

Multiple Hypothesis Tracking Revisited

no code implementations ICCV 2015 Chanho Kim, Fuxin Li, Arridhana Ciptadi, James M. Rehg

This paper revisits the classical multiple hypotheses tracking (MHT) algorithm in a tracking-by-detection framework.

Efficient Learning of Continuous-Time Hidden Markov Models for Disease Progression

no code implementations NeurIPS 2015 Yu-Ying Liu, Shuang Li, Fuxin Li, Le Song, James M. Rehg

The Continuous-Time Hidden Markov Model (CT-HMM) is an attractive approach to modeling disease progression due to its ability to describe noisy observations arriving irregularly in time.

The Middle Child Problem: Revisiting Parametric Min-Cut and Seeds for Object Proposals

no code implementations ICCV 2015 Ahmad Humayun, Fuxin Li, James M. Rehg

We propose a new energy minimization framework incorporating geodesic distances between segments which solves this problem.

GASP : Geometric Association with Surface Patches

no code implementations15 Nov 2014 Rahul Sawhney, Fuxin Li, Henrik I. Christensen

A fundamental challenge to sensory processing tasks in perception and robotics is the problem of obtaining data associations across views.

RIGOR: Reusing Inference in Graph Cuts for Generating Object Regions

no code implementations CVPR 2014 Ahmad Humayun, Fuxin Li, James M. Rehg

By precomputing a graph which can be used for parametric min-cuts over different seeds, we speed up the generation of the segment pool.

Object Recognition Segmentation

Beyond Sentiment: The Manifold of Human Emotions

no code implementations8 Feb 2012 Seungyeon Kim, Fuxin Li, Guy Lebanon, Irfan Essa

Sentiment analysis predicts the presence of positive or negative emotions in a text document.

Sentiment Analysis

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