no code implementations • ICML 2020 • Joon Kim, Jiahao Chen, Ameet Talwalkar
There exist several inherent trade-offs while designing a fair model, such as those between the model’s predictive accuracy and fairness, or even among different notions of fairness.
no code implementations • 14 Jan 2025 • Lin Liu, Yutong Wang, Jiahao Chen, Jianfang Li, Tangli Xue, Longlong Li, Jianqiang Ren, Liefeng Bo
This report introduces Make-A-Character 2, an advanced system for generating high-quality 3D characters from single portrait photographs, ideal for game development and digital human applications.
1 code implementation • 10 Jan 2025 • Zhao Yang, Bing Su, Jiahao Chen, Ji-Rong Wen
It uses a set of learnable functional queries to adaptatively extract different local representations from the sequence of residue-level features for predicting different EC numbers.
no code implementations • 24 Dec 2024 • Yiming Wang, Jiahao Chen, Qingming Li, Xing Yang, Shouling Ji
As text-to-image (T2I) models continue to advance and gain widespread adoption, their associated safety issues are becoming increasingly prominent.
no code implementations • CVPR 2024 • Jiahao Chen, Yipeng Qin, Lingjie Liu, Jiangbo Lu, Guanbin Li
Neural Radiance Field (NeRF) has been widely recognized for its excellence in novel view synthesis and 3D scene reconstruction.
no code implementations • 10 Mar 2024 • Jiahao Chen, Enhui Zheng, Ming Dai, Yifu Chen, Yusheng Lu
Furthermore, its performance in meter-level localization accuracy is impressive, with 182. 62% improvement in 3-meter accuracy, 164. 17% improvement in 5-meter accuracy, and 137. 43% improvement in 10-meter accuracy.
no code implementations • 28 Feb 2024 • Juan Zhang, Jiahao Chen, Cheng Wang, Zhiwang Yu, Tangquan Qi, Di wu
Despite numerous completed studies, achieving high fidelity talking face generation with highly synchronized lip movements corresponding to arbitrary audio remains a significant challenge in the field.
no code implementations • 14 Feb 2024 • Jiexin Wang, Jiahao Chen, Bing Su
Although deep neural networks yield high classification accuracy given sufficient training data, their predictions are typically overconfident or under-confident, i. e., the prediction confidences cannot truly reflect the accuracy.
no code implementations • 24 Dec 2023 • Jianqiang Ren, Chao He, Lin Liu, Jiahao Chen, Yutong Wang, Yafei Song, Jianfang Li, Tangli Xue, Siqi Hu, Tao Chen, Kunkun Zheng, Jianjing Xiang, Liefeng Bo
There is a growing demand for customized and expressive 3D characters with the emergence of AI agents and Metaverse, but creating 3D characters using traditional computer graphics tools is a complex and time-consuming task.
no code implementations • 24 Oct 2023 • Yuwen Pu, Jiahao Chen, JiaYu Pan, Hao Li, Diqun Yan, Xuhong Zhang, Shouling Ji
Face recognition service has been used in many fields and brings much convenience to people.
no code implementations • 14 Sep 2023 • Jiahao Chen, Xiaofei Li
This study aims to develop an advanced high-frequency trading algorithm and compare the performance of three different mathematical models: the combination of the cross-entropy loss function and the quasi-Newton algorithm, the FCNN model, and the vector machine.
1 code implementation • 4 Aug 2023 • Jiacheng Deng, Li Dong, Jiahao Chen, Diqun Yan, Rangding Wang, Dengpan Ye, Lingchen Zhao, Jinyu Tian
In this work, we propose a novel and effective defense mechanism termed the Universal Defensive Underpainting Patch (UDUP) that modifies the underpainting of text images instead of the characters.
Optical Character Recognition Optical Character Recognition (OCR)
no code implementations • 22 May 2023 • Jiahao Chen, Yurou Liu, Jiangmeng Li, Bing Su, JiRong Wen
In this paper, we introduce a new model for molecular representation learning called the Atomic and Subgraph-aware Bilateral Aggregation (ASBA), which addresses the limitations of previous atom-wise and subgraph-wise models by incorporating both types of information.
no code implementations • 17 Apr 2023 • Jiexin Wang, Jiahao Chen, Bing Su
Auto-evaluation aims to automatically evaluate a trained model on any test dataset without human annotations.
1 code implementation • CVPR 2023 • Jiahao Chen, Bing Su
We adaptively transfer knowledge from head classes to get the target probability density of tail classes.
1 code implementation • 14 Feb 2023 • Zitao Liu, Qiongqiong Liu, Jiahao Chen, Shuyan Huang, Boyu Gao, Weiqi Luo, Jian Weng
In this paper, we proposed \emph{AT-DKT} to improve the prediction performance of the original deep knowledge tracing model with two auxiliary learning tasks, i. e., \emph{question tagging (QT) prediction task} and \emph{individualized prior knowledge (IK) prediction task}.
no code implementations • 14 Feb 2023 • Jiahao Chen, Zitao Liu, Shuyan Huang, Qiongqiong Liu, Weiqi Luo
The results demonstrate that our approach is superior on the KT prediction task, and it outperforms a wide range of deep learning based KT models in terms of prediction accuracy with better model interpretability.
1 code implementation • 14 Feb 2023 • Zitao Liu, Qiongqiong Liu, Jiahao Chen, Shuyan Huang, Weiqi Luo
Knowledge tracing (KT) is the problem of predicting students' future performance based on their historical interactions with intelligent tutoring systems.
no code implementations • 3 Nov 2022 • Faisal Hamman, Jiahao Chen, Sanghamitra Dutta
In this paper, we first demonstrate that simply querying for fairness metrics, such as statistical parity and equalized odds can leak the protected attributes of individuals to the model developers.
1 code implementation • 13 Aug 2022 • Ming Dai, Enhui Zheng, Jiahao Chen, Lei Qi, ZhenHua Feng, Wankou Yang
However, IR-based methods face several challenges: 1) Pre- and post-processing incur significant computational and storage overhead; 2) The lack of interaction between dual-source features impairs precise spatial perception.
no code implementations • 4 Aug 2022 • Fan Yang, Qizhang Feng, Kaixiong Zhou, Jiahao Chen, Xia Hu
Counterfactual, serving as one emerging type of model explanation, has attracted tons of attentions recently from both industry and academia.
1 code implementation • 13 Jul 2022 • Jiahao Chen, Zitao Liu, Weiqi Luo
In this paper, we investigate the opportunities of automating the judgment process in online one-on-one math classes.
no code implementations • 30 Jun 2022 • Mingyu Dong, Jiahao Chen, Diqun Yan, Jingxing Gao, Li Dong, Rangding Wang
Experimental results show that the proposed method can not only detect the adversarial examples with high accuracy, but also detect the specific category of the AEs.
no code implementations • 29 Jun 2022 • Jingyi Bu, Guojing Gan, Jiahao Chen, Yanxin Su, Mengjia Yuan, Yanchun Gao, Francisco Domingo, Mirco Migliavacca, Tarek S. El-Madany, Pierre Gentine, Monica Garcia
For the CSIF model, the average R2 for ET estimates also improved when including the effect of soil moisture: from 0. 65 (0. 79) to 0. 71 (0. 84), with RMSE ranging between 0. 023 (0. 22) and 0. 043 (0. 54) mm depending on the site.
no code implementations • 29 Jun 2022 • Akshaj Kumar Veldanda, Ivan Brugere, Jiahao Chen, Sanghamitra Dutta, Alan Mishler, Siddharth Garg
We further show that MinDiff optimization is very sensitive to choice of batch size in the under-parameterized regime.
1 code implementation • 24 Jun 2022 • Qiongqiong Liu, Yaying Huang, Zitao Liu, Shuyan Huang, Jiahao Chen, Xiangyu Zhao, Guimin Lin, Yuyu Zhou, Weiqi Luo
Sentence completion (SC) questions present a sentence with one or more blanks that need to be filled in, three to five possible words or phrases as options.
1 code implementation • 24 Jun 2022 • Jiahao Chen, Shuyan Huang, Zitao Liu, Weiqi Luo
In spite of the popularity and advantages of online learning, the education technology and educational data mining communities still suffer from the lack of large-scale, high-quality, and well-annotated teaching instruction datasets to study computational approaches to automatically detect online dialogic instructions and further improve the online teaching effectiveness.
no code implementations • 23 Jun 2022 • Shuyan Huang, Qiongqiong Liu, Jiahao Chen, Xiangen Hu, Zitao Liu, Weiqi Luo
We propose a simple but effective method to recommend exercises with high quality and diversity for students.
2 code implementations • 23 Jun 2022 • Zitao Liu, Qiongqiong Liu, Jiahao Chen, Shuyan Huang, Jiliang Tang, Weiqi Luo
However, the success behind deep learning based knowledge tracing (DLKT) approaches is still left somewhat unknown and proper measurement and analysis of these DLKT approaches remain a challenge.
no code implementations • 22 Mar 2022 • Zhe Ye, Jiahao Chen, Diqun Yan
We generate an enhanced speech on the impaired speech to compensate for the absence of the reference audio, then pair the information of residuals with the impaired speech.
no code implementations • 19 Feb 2022 • Elizabeth Anne Watkins, Michael McKenna, Jiahao Chen
Computer scientists are trained to create abstractions that simplify and generalize.
no code implementations • NeurIPS 2021 • Shangshu Qian, Hung Pham, Thibaud Lutellier, Zeou Hu, Jungwon Kim, Lin Tan, YaoLiang Yu, Jiahao Chen, Sameena Shah
Our study of 22 mitigation techniques and five baselines reveals up to 12. 6% fairness variance across identical training runs with identical seeds.
no code implementations • 2 Nov 2021 • Eren Kurshan, Jiahao Chen, Victor Storchan, Hongda Shen
Artificial intelligence (AI) continues to find more numerous and more critical applications in the financial services industry, giving rise to fair and ethical AI as an industry-wide objective.
no code implementations • 29 Sep 2021 • Jiahao Chen, Bing Su
We apply STG to samples of tail classes for augmentation in the classifier-tuning stage.
no code implementations • 11 Aug 2021 • Jiahao Chen, Victor Storchan
Regulators have signalled an interest in adopting explainable AI(XAI) techniques to handle the diverse needs for model governance, operational servicing, and compliance in the financial services industry.
no code implementations • 11 Aug 2021 • Jiahao Chen
We introduce the needs for explainable AI that arise from Standard No.
no code implementations • 11 Aug 2021 • Jiahao Chen, Victor Storchan, Eren Kurshan
We review practical challenges in building and deploying ethical AI at the scale of contemporary industrial and societal uses.
no code implementations • 15 Jul 2021 • Jiahao Chen, Hang Li, Wenbiao Ding, Zitao Liu
In this paper, we propose a simple yet effective solution to build practical teacher recommender systems for online one-on-one classes.
no code implementations • 29 Jun 2021 • Thomas Spooner, Danial Dervovic, Jason Long, Jon Shepard, Jiahao Chen, Daniele Magazzeni
We present a new method for counterfactual explanations (CFEs) based on Bayesian optimisation that applies to both classification and regression models.
no code implementations • 16 Jun 2021 • Fan Yang, Sahan Suresh Alva, Jiahao Chen, Xia Hu
To address these limitations, we propose a Model-based Counterfactual Synthesizer (MCS) framework for interpreting machine learning models.
no code implementations • 1 Jan 2021 • Guangyu Li, Jiahao Chen, Samuel A Assefa, Yan Liu
We present augmented counterfactual ordinary differential equations (ACODEs), a new approach to counterfactual inference on time series data with a focus on healthcare applications.
no code implementations • 19 Nov 2020 • Dongruo Zhou, Jiahao Chen, Quanquan Gu
Multi-objective reinforcement learning (MORL) is an extension of ordinary, single-objective reinforcement learning (RL) that is applicable to many real-world tasks where multiple objectives exist without known relative costs.
no code implementations • 4 Nov 2020 • Ashrya Agrawal, Florian Pfisterer, Bernd Bischl, Francois Buet-Golfouse, Srijan Sood, Jiahao Chen, Sameena Shah, Sebastian Vollmer
We present an empirical study of debiasing methods for classifiers, showing that debiasers often fail in practice to generalize out-of-sample, and can in fact make fairness worse rather than better.
no code implementations • 9 Oct 2020 • Eren Kurshan, Hongda Shen, Jiahao Chen
As a part of the outlook, we present a system-level framework towards increased self-regulation for robustness and compliance.
no code implementations • 9 Oct 2020 • Jiahao Chen, Manuela Veloso
We introduce a data management problem called metadata debt, to identify the mapping between data concepts and their logical representations.
no code implementations • 9 Oct 2020 • Leo de Castro, Jiahao Chen, Antigoni Polychroniadou
When developing models for regulated decision making, sensitive features like age, race and gender cannot be used and must be obscured from model developers to prevent bias.
no code implementations • 21 Jul 2020 • Jiaqi Yang, Jiahao Chen, Zhiqiang Huang, Siwen Quan, Yanning Zhang, Zhiguo Cao
We present a simple yet effective method for 3D correspondence grouping.
no code implementations • 23 Jun 2020 • Hariom Jani, Jheng-Cyuan Lin, Jiahao Chen, Jack Harrison, Francesco Maccherozzi, Jonathan Schad, Saurav Prakash, Chang-Beom Eom, A. Ariando, T. Venkatesan, Paolo G. Radaelli
In the quest for post-CMOS technologies, ferromagnetic skyrmions and their anti-particles have shown great promise as topologically protected solitonic information carriers in memory-in-logic or neuromorphic devices.
Materials Science
no code implementations • 16 May 2020 • Gale Yan Huang, Jiahao Chen, Haochen Liu, Weiping Fu, Wenbiao Ding, Jiliang Tang, Songfan Yang, Guoliang Li, Zitao Liu
Asking questions is one of the most crucial pedagogical techniques used by teachers in class.
1 code implementation • LREC 2020 • Jiahao Chen, Chenjie Cao, Xiuyan Jiang
However, some studies show that customized self-supervised tasks for a particular type of downstream task can effectively help the pre-trained model to capture more corresponding knowledge and semantic information.
no code implementations • 9 Apr 2020 • Robert E. Tillman, Vamsi K. Potluru, Jiahao Chen, Prashant Reddy, Manuela Veloso
Through experiments with simulated and real world scientific collaboration, transportation and global trade networks, we demonstrate that the proposed heuristics show increased performance with the richness of connection type correlation structure and significantly outperform their baseline heuristics for ordinary networks with a single connection type.
1 code implementation • 7 Apr 2020 • Joon Sik Kim, Jiahao Chen, Ameet Talwalkar
Group fairness, a class of fairness notions that measure how different groups of individuals are treated differently according to their protected attributes, has been shown to conflict with one another, often with a necessary cost in loss of model's predictive performance.
no code implementations • 1 Sep 2019 • Jiahao Chen, Hang Li, Wenxin Wang, Wenbiao Ding, Gale Yan Huang, Zitao Liu
To warn the unqualified instructors and ensure the overall education quality, we build a monitoring and alerting system by utilizing multimodal information from the online environment.
1 code implementation • 27 Nov 2018 • Jiahao Chen, Nathan Kallus, Xiaojie Mao, Geoffry Svacha, Madeleine Udell
We also propose an alternative weighted estimator that uses soft classification, and show that its bias arises simply from the conditional covariance of the outcome with the true class membership.
no code implementations • 12 Sep 2018 • Jiahao Chen
The financial services industry has unique explainability and fairness challenges arising from compliance and ethical considerations in credit decisioning.
no code implementations • 9 Aug 2018 • Jeff Bezanson, Jake Bolewski, Jiahao Chen
Technical computing is a challenging application area for programming languages to address.