Search Results for author: Jiawei Zhou

Found 32 papers, 16 papers with code

Online Semantic Parsing for Latency Reduction in Task-Oriented Dialogue

no code implementations ACL 2022 Jiawei Zhou, Jason Eisner, Michael Newman, Emmanouil Antonios Platanios, Sam Thomson

Standard conversational semantic parsing maps a complete user utterance into an executable program, after which the program is executed to respond to the user.

Machine Translation Semantic Parsing +1

Toward Robust and Accurate Adversarial Camouflage Generation against Vehicle Detectors

no code implementations15 Nov 2024 Jiawei Zhou, Linye Lyu, Daojing He, Yu Li

However, existing methods often struggle to capture environmental characteristics during the rendering process or produce adversarial textures that can precisely map to the target vehicle.

Neural Rendering

"It's a conversation, not a quiz": A Risk Taxonomy and Reflection Tool for LLM Adoption in Public Health

no code implementations4 Nov 2024 Jiawei Zhou, Amy Z. Chen, Darshi Shah, Laura Schwab Reese, Munmun De Choudhury

Recent breakthroughs in large language models (LLMs) have generated both interest and concern about their potential adoption as accessible information sources or communication tools across different domains.

CNCA: Toward Customizable and Natural Generation of Adversarial Camouflage for Vehicle Detectors

no code implementations26 Sep 2024 Linye Lyu, Jiawei Zhou, Daojing He, Yu Li

By sampling the optimal texture image from the diffusion model with a user-specific text prompt, our method can generate natural and customizable adversarial camouflage while maintaining high attack performance.

A Novel Hybrid Approach for Tornado Prediction in the United States: Kalman-Convolutional BiLSTM with Multi-Head Attention

no code implementations5 Aug 2024 Jiawei Zhou

Tornadoes are among the most intense atmospheric vortex phenomena and pose significant challenges for detection and forecasting.

A Community-Centric Perspective for Characterizing and Detecting Anti-Asian Violence-Provoking Speech

no code implementations21 Jul 2024 Gaurav Verma, Rynaa Grover, Jiawei Zhou, Binny Mathew, Jordan Kraemer, Munmun De Choudhury, Srijan Kumar

In contrast to prior work that has demonstrated the effectiveness of such classifiers in detecting hateful speech ($F_1 = 0. 89$), our work shows that accurate and reliable detection of violence-provoking speech is a challenging task ($F_1 = 0. 69$).

MJ-Bench: Is Your Multimodal Reward Model Really a Good Judge for Text-to-Image Generation?

1 code implementation5 Jul 2024 Zhaorun Chen, Yichao Du, Zichen Wen, Yiyang Zhou, Chenhang Cui, Zhenzhen Weng, Haoqin Tu, Chaoqi Wang, Zhengwei Tong, Qinglan Huang, Canyu Chen, Qinghao Ye, Zhihong Zhu, Yuqing Zhang, Jiawei Zhou, Zhuokai Zhao, Rafael Rafailov, Chelsea Finn, Huaxiu Yao

Compared with open-source VLMs, smaller-sized scoring models can provide better feedback regarding text-image alignment and image quality, while VLMs provide more accurate feedback regarding safety and generation bias due to their stronger reasoning capabilities.

Hallucination Text-to-Image Generation

InfRS: Incremental Few-Shot Object Detection in Remote Sensing Images

1 code implementation18 May 2024 Wuzhou Li, Jiawei Zhou, Xiang Li, Yi Cao, Guang Jin, Xuemin Zhang

In this paper, we explore the intricate task of incremental few-shot object detection in remote sensing images.

Few-Shot Object Detection Incremental Learning +1

Semi-Parametric Retrieval via Binary Token Index

1 code implementation3 May 2024 Jiawei Zhou, Li Dong, Furu Wei, Lei Chen

The landscape of information retrieval has broadened from search services to a critical component in various advanced applications, where indexing efficiency, cost-effectiveness, and freshness are increasingly important yet remain less explored.

Information Retrieval Open-Domain Question Answering +1

Few-shot Oriented Object Detection with Memorable Contrastive Learning in Remote Sensing Images

no code implementations20 Mar 2024 Jiawei Zhou, Wuzhou Li, Yi Cao, Hongtao Cai, Xiang Li

Few-shot object detection (FSOD) has garnered significant research attention in the field of remote sensing due to its ability to reduce the dependency on large amounts of annotated data.

Contrastive Learning Few-Shot Object Detection +3

HALC: Object Hallucination Reduction via Adaptive Focal-Contrast Decoding

2 code implementations1 Mar 2024 Zhaorun Chen, Zhuokai Zhao, Hongyin Luo, Huaxiu Yao, Bo Li, Jiawei Zhou

While large vision-language models (LVLMs) have demonstrated impressive capabilities in interpreting multi-modal contexts, they invariably suffer from object hallucinations (OH).

Hallucination Object +2

RAUCA: A Novel Physical Adversarial Attack on Vehicle Detectors via Robust and Accurate Camouflage Generation

1 code implementation24 Feb 2024 Jiawei Zhou, Linye Lyu, Daojing He, Yu Li

However, existing methods often struggle to capture environmental characteristics during the rendering process or produce adversarial textures that can precisely map to the target vehicle, resulting in suboptimal attack performance.

Adversarial Attack Neural Rendering

Quick Back-Translation for Unsupervised Machine Translation

1 code implementation1 Dec 2023 Benjamin Brimacombe, Jiawei Zhou

The field of unsupervised machine translation has seen significant advancement from the marriage of the Transformer and the back-translation algorithm.

Decoder Translation +1

CLIPTrans: Transferring Visual Knowledge with Pre-trained Models for Multimodal Machine Translation

1 code implementation ICCV 2023 Devaansh Gupta, Siddhant Kharbanda, Jiawei Zhou, Wanhua Li, Hanspeter Pfister, Donglai Wei

Simultaneously, there has been an influx of multilingual pre-trained models for NMT and multimodal pre-trained models for vision-language tasks, primarily in English, which have shown exceptional generalisation ability.

Image Captioning Multimodal Machine Translation +2

Retrieval-based Disentangled Representation Learning with Natural Language Supervision

no code implementations15 Dec 2022 Jiawei Zhou, Xiaoguang Li, Lifeng Shang, Xin Jiang, Qun Liu, Lei Chen

In light of this, we present Vocabulary Disentangled Retrieval (VDR), a retrieval-based framework that harnesses natural language as proxies of the underlying data variation to drive disentangled representation learning.

Cross-Modal Retrieval Disentanglement +1

GEMv2: Multilingual NLG Benchmarking in a Single Line of Code

no code implementations22 Jun 2022 Sebastian Gehrmann, Abhik Bhattacharjee, Abinaya Mahendiran, Alex Wang, Alexandros Papangelis, Aman Madaan, Angelina McMillan-Major, Anna Shvets, Ashish Upadhyay, Bingsheng Yao, Bryan Wilie, Chandra Bhagavatula, Chaobin You, Craig Thomson, Cristina Garbacea, Dakuo Wang, Daniel Deutsch, Deyi Xiong, Di Jin, Dimitra Gkatzia, Dragomir Radev, Elizabeth Clark, Esin Durmus, Faisal Ladhak, Filip Ginter, Genta Indra Winata, Hendrik Strobelt, Hiroaki Hayashi, Jekaterina Novikova, Jenna Kanerva, Jenny Chim, Jiawei Zhou, Jordan Clive, Joshua Maynez, João Sedoc, Juraj Juraska, Kaustubh Dhole, Khyathi Raghavi Chandu, Laura Perez-Beltrachini, Leonardo F. R. Ribeiro, Lewis Tunstall, Li Zhang, Mahima Pushkarna, Mathias Creutz, Michael White, Mihir Sanjay Kale, Moussa Kamal Eddine, Nico Daheim, Nishant Subramani, Ondrej Dusek, Paul Pu Liang, Pawan Sasanka Ammanamanchi, Qi Zhu, Ratish Puduppully, Reno Kriz, Rifat Shahriyar, Ronald Cardenas, Saad Mahamood, Salomey Osei, Samuel Cahyawijaya, Sanja Štajner, Sebastien Montella, Shailza, Shailza Jolly, Simon Mille, Tahmid Hasan, Tianhao Shen, Tosin Adewumi, Vikas Raunak, Vipul Raheja, Vitaly Nikolaev, Vivian Tsai, Yacine Jernite, Ying Xu, Yisi Sang, Yixin Liu, Yufang Hou

This problem is especially pertinent in natural language generation which requires ever-improving suites of datasets, metrics, and human evaluation to make definitive claims.

Benchmarking Text Generation

Inducing and Using Alignments for Transition-based AMR Parsing

2 code implementations NAACL 2022 Andrew Drozdov, Jiawei Zhou, Radu Florian, Andrew McCallum, Tahira Naseem, Yoon Kim, Ramon Fernandez Astudillo

These alignments are learned separately from parser training and require a complex pipeline of rule-based components, pre-processing, and post-processing to satisfy domain-specific constraints.

Abstract Meaning Representation AMR Parsing

Hyperlink-induced Pre-training for Passage Retrieval in Open-domain Question Answering

1 code implementation ACL 2022 Jiawei Zhou, Xiaoguang Li, Lifeng Shang, Lan Luo, Ke Zhan, Enrui Hu, Xinyu Zhang, Hao Jiang, Zhao Cao, Fan Yu, Xin Jiang, Qun Liu, Lei Chen

To alleviate the data scarcity problem in training question answering systems, recent works propose additional intermediate pre-training for dense passage retrieval (DPR).

Open-Domain Question Answering Passage Retrieval +1

Structure-aware Fine-tuning of Sequence-to-sequence Transformers for Transition-based AMR Parsing

1 code implementation EMNLP 2021 Jiawei Zhou, Tahira Naseem, Ramón Fernandez Astudillo, Young-suk Lee, Radu Florian, Salim Roukos

We provide a detailed comparison with recent progress in AMR parsing and show that the proposed parser retains the desirable properties of previous transition-based approaches, while being simpler and reaching the new parsing state of the art for AMR 2. 0, without the need for graph re-categorization.

Ranked #9 on AMR Parsing on LDC2017T10 (using extra training data)

Abstract Meaning Representation AMR Parsing +2

Method for making multi-attribute decisions in wargames by combining intuitionistic fuzzy numbers with reinforcement learning

no code implementations6 Sep 2021 Yuxiang Sun, Bo Yuan, Yufan Xue, Jiawei Zhou, XiaoYu Zhang, Xianzhong Zhou

Researchers are increasingly focusing on intelligent games as a hot research area. The article proposes an algorithm that combines the multi-attribute management and reinforcement learning methods, and that combined their effect on wargaming, it solves the problem of the agent's low rate of winning against specific rules and its inability to quickly converge during intelligent wargame training. At the same time, this paper studied a multi-attribute decision making and reinforcement learning algorithm in a wargame simulation environment, and obtained data on red and blue conflict. Calculate the weight of each attribute based on the intuitionistic fuzzy number weight calculations.

Attribute Decision Making +4

AMR Parsing with Action-Pointer Transformer

1 code implementation NAACL 2021 Jiawei Zhou, Tahira Naseem, Ramón Fernandez Astudillo, Radu Florian

In this work, we propose a transition-based system that combines hard-attention over sentences with a target-side action pointer mechanism to decouple source tokens from node representations and address alignments.

Abstract Meaning Representation AMR Parsing +3

On Statistical Efficiency in Learning

1 code implementation24 Dec 2020 Jie Ding, Enmao Diao, Jiawei Zhou, Vahid Tarokh

We propose a generalized notion of Takeuchi's information criterion and prove that the proposed method can asymptotically achieve the optimal out-sample prediction loss under reasonable assumptions.

Model Selection

Improving Non-autoregressive Neural Machine Translation with Monolingual Data

no code implementations ACL 2020 Jiawei Zhou, Phillip Keung

Non-autoregressive (NAR) neural machine translation is usually done via knowledge distillation from an autoregressive (AR) model.

Data Augmentation Knowledge Distillation +2

Automating Botnet Detection with Graph Neural Networks

2 code implementations13 Mar 2020 Jiawei Zhou, Zhiying Xu, Alexander M. Rush, Minlan Yu

Botnets are now a major source for many network attacks, such as DDoS attacks and spam.

Graph Learning

Local Structure Matching Driven by Joint-Saliency-Structure Adaptive Kernel Regression

no code implementations3 Feb 2013 Binjie Qin, Zhuangming Shen, Zien Zhou, Jiawei Zhou, Jiuai Sun, HUI ZHANG, Mingxing Hu, Yisong Lv

For nonrigid image registration, matching the particular structures (or the outliers) that have missing correspondence and/or local large deformations, can be more difficult than matching the common structures with small deformations in the two images.

Image Registration regression

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