Search Results for author: Weitang Liu

Found 14 papers, 8 papers with code

OMNIINPUT: A Model-centric Evaluation Framework through Output Distribution

no code implementations6 Dec 2023 Weitang Liu, Ying Wai Li, Tianle Wang, Yi-Zhuang You, Jingbo Shang

We propose a novel model-centric evaluation framework, OmniInput, to evaluate the quality of an AI/ML model's predictions on all possible inputs (including human-unrecognizable ones), which is crucial for AI safety and reliability.

WOT-Class: Weakly Supervised Open-world Text Classification

1 code implementation21 May 2023 Tianle Wang, Zihan Wang, Weitang Liu, Jingbo Shang

State-of-the-art weakly supervised text classification methods, while significantly reduced the required human supervision, still requires the supervision to cover all the classes of interest.

Image Classification text-classification +1

Gradient-based Wang-Landau Algorithm: A Novel Sampler for Output Distribution of Neural Networks over the Input Space

no code implementations19 Feb 2023 Weitang Liu, Ying-Wai Li, Yi-Zhuang You, Jingbo Shang

We first draw the connection between the output distribution of a NN and the density of states (DOS) of a physical system.

Image Classification

Can multi-label classification networks know what they don't know?

1 code implementation NeurIPS 2021 Haoran Wang, Weitang Liu, Alex Bocchieri, Yixuan Li

Our results show consistent improvement over previous methods that are based on the maximum-valued scores, which fail to capture joint information from multiple labels.

Classification Multi-class Classification +2

MAF-GNN: Multi-adaptive Spatiotemporal-flow Graph Neural Network for Traffic Speed Forecasting

no code implementations8 Aug 2021 Yaobin Xu, Weitang Liu, Zhongyi Jiang, Zixuan Xu, Tingyun Mao, Lili Chen, Mingwei Zhou

In this paper, we propose a Multi-adaptive Spatiotemporal-flow Graph Neural Network (MAF-GNN) for traffic speed forecasting.

Can multi-label classification networks know what they don’t know?

1 code implementation NeurIPS 2021 Haoran Wang, Weitang Liu, Alex Bocchieri, Yixuan Li

Our results show consistent improvement over previous methods that are based on the maximum-valued scores, which fail to capture joint information from multiple labels.

Classification Multi-class Classification +2

Energy-based Out-of-distribution Detection for Multi-label Classification

no code implementations1 Jan 2021 Haoran Wang, Weitang Liu, Alex Bocchieri, Yixuan Li

Our results show consistent improvement over previous methods that are based on the maximum-valued scores, which fail to capture joint information from multiple labels.

Classification General Classification +4

CLUENER2020: Fine-grained Named Entity Recognition Dataset and Benchmark for Chinese

3 code implementations13 Jan 2020 Liang Xu, Yu tong, Qianqian Dong, Yixuan Liao, Cong Yu, Yin Tian, Weitang Liu, Lu Li, Caiquan Liu, Xuanwei Zhang

In this paper, we introduce the NER dataset from CLUE organization (CLUENER2020), a well-defined fine-grained dataset for named entity recognition in Chinese.

Chinese Named Entity Recognition named-entity-recognition +2

Unsupervised Object Segmentation with Explicit Localization Module

no code implementations21 Nov 2019 Weitang Liu, Lifeng Wei, James Sharpnack, John D. Owens

In this paper, we propose a novel architecture that iteratively discovers and segments out the objects of a scene based on the image reconstruction quality.

Image Reconstruction Object +2

Multiple Generative Models Ensemble for Knowledge-Driven Proactive Human-Computer Dialogue Agent

4 code implementations8 Jul 2019 Zelin Dai, Weitang Liu, Guanhua Zhan

Multiple sequence to sequence models were used to establish an end-to-end multi-turns proactive dialogue generation agent, with the aid of data augmentation techniques and variant encoder-decoder structure designs.

Data Augmentation Dialogue Generation

Surprising Negative Results for Generative Adversarial Tree Search

3 code implementations ICLR 2019 Kamyar Azizzadenesheli, Brandon Yang, Weitang Liu, Zachary C. Lipton, Animashree Anandkumar

We deploy this model and propose generative adversarial tree search (GATS) a deep RL algorithm that learns the environment model and implements Monte Carlo tree search (MCTS) on the learned model for planning.

Atari Games Reinforcement Learning (RL)

Object Localization with a Weakly Supervised CapsNet

no code implementations20 May 2018 Weitang Liu, Emad Barsoum, John D. Owens

Our model can learn and derive the coordinates of the digits better than its convolution counterpart that lacks a routing-by-agreement algorithm, and can also perform well when testing on the multi-digit moving MNIST and KTH datasets.

Object Object Localization +3

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