no code implementations • 12 Dec 2024 • Yu Feng, Phu Mon Htut, Zheng Qi, Wei Xiao, Manuel Mager, Nikolaos Pappas, Kishaloy Halder, Yang Li, Yassine Benajiba, Dan Roth
In this paper, we propose a novel method, DiverseAgentEntropy, for evaluating a model's uncertainty using multi-agent interaction under the assumption that if a model is certain, it should consistently recall the answer to the original query across a diverse collection of questions about the same original query.
no code implementations • 16 Oct 2024 • Siyi Liu, Qiang Ning, Kishaloy Halder, Wei Xiao, Zheng Qi, Phu Mon Htut, Yi Zhang, Neha Anna John, Bonan Min, Yassine Benajiba, Dan Roth
Open domain question answering systems frequently rely on information retrieved from large collections of text (such as the Web) to answer questions.
no code implementations • 18 Sep 2024 • Fouad Makiyeh, Mark Bastourous, Anass Bairouk, Wei Xiao, Mirjana Maras, Tsun-Hsuan Wangb, Marc Blanchon, Ramin Hasani, Patrick Chareyre, Daniela Rus
This demonstrates the potential of optical flow data, combined with advanced neural network architectures (a CNN-based structure for fusing data and a Recurrence-based network for inferring a command from latent space), to enhance the performance of autonomous vehicles steering estimation.
no code implementations • 16 Sep 2024 • Huy-Dung Nguyen, Anass Bairouk, Mirjana Maras, Wei Xiao, Tsun-Hsuan Wang, Patrick Chareyre, Ramin Hasani, Marc Blanchon, Daniela Rus
While our performance in steering angle estimation is comparable to existing methods, the integration of human-like perception through multi-task learning holds significant potential for advancing autonomous driving systems.
1 code implementation • 18 Jun 2024 • Wei Xiao, Tsun-Hsuan Wang, Daniela Rus
Safe learning is central to AI-enabled robots where a single failure may lead to catastrophic results.
1 code implementation • 4 Jan 2024 • H M Sabbir Ahmad, Ehsan Sabouni, Akua Dickson, Wei Xiao, Christos G. Cassandras, Wenchao Li
We address the security of a network of Connected and Automated Vehicles (CAVs) cooperating to safely navigate through a conflict area (e. g., traffic intersections, merging roadways, roundabouts).
no code implementations • 26 Oct 2023 • Tsun-Hsuan Wang, Alaa Maalouf, Wei Xiao, Yutong Ban, Alexander Amini, Guy Rosman, Sertac Karaman, Daniela Rus
As autonomous driving technology matures, end-to-end methodologies have emerged as a leading strategy, promising seamless integration from perception to control via deep learning.
no code implementations • 1 Oct 2023 • Anni Li, Christos G. Cassandras, Wei Xiao
This paper studies safe driving interactions between Human-Driven Vehicles (HDVs) and Connected and Automated Vehicles (CAVs) in mixed traffic where the dynamics and control policies of HDVs are unknown and hard to predict.
no code implementations • 6 Sep 2023 • Wei Xiao, Ross Allen, Daniela Rus
To address these challenges, we incorporate higher-order CBFs into neural ordinary differential equation-based learning models as differentiable CBFs to guarantee safety for non-affine control systems.
no code implementations • 17 Jun 2023 • Yuxia Liu, Qi Zhang, Wei Xiao, Tianguang Chu
We propose a successive one-sided Hodrick-Prescott (SOHP) filter from multiple time scale decomposition perspective to derive trend estimate for a time series.
no code implementations • 31 May 2023 • Wei Xiao, Tsun-Hsuan Wang, Chuang Gan, Daniela Rus
Diffusion model-based approaches have shown promise in data-driven planning, but there are no safety guarantees, thus making it hard to be applied for safety-critical applications.
1 code implementation • 26 May 2023 • H M Sabbir Ahmad, Ehsan Sabouni, Wei Xiao, Christos G. Cassandras, Wenchao Li
We address the security of a network of Connected and Automated Vehicles (CAVs) cooperating to navigate through a conflict area.
no code implementations • 12 Apr 2023 • Wenliang Liu, Wei Xiao, Calin Belta
In this paper, we consider the problem of learning a neural network controller for a system required to satisfy a Signal Temporal Logic (STL) specification.
no code implementations • 5 Apr 2023 • Tsun-Hsuan Wang, Wei Xiao, Makram Chahine, Alexander Amini, Ramin Hasani, Daniela Rus
Modern end-to-end learning systems can learn to explicitly infer control from perception.
no code implementations • 10 Mar 2023 • Wei Xiao, Christos G. Cassandras, Calin A. Belta
It has been shown that optimizing quadratic costs while stabilizing affine control systems to desired (sets of) states subject to state and control constraints can be reduced to a sequence of Quadratic Programs (QPs) by using Control Barrier Functions (CBFs) and Control Lyapunov Functions (CLFs).
1 code implementation • 28 Feb 2023 • Ross Allen, Wei Xiao, Daniela Rus
We present Learned Risk Metric Maps (LRMM) for real-time estimation of coherent risk metrics of high dimensional dynamical systems operating in unstructured, partially observed environments.
1 code implementation • 25 Jan 2023 • Kung-Hsiang Huang, Siffi Singh, Xiaofei Ma, Wei Xiao, Feng Nan, Nicholas Dingwall, William Yang Wang, Kathleen McKeown
Missing information is a common issue of dialogue summarization where some information in the reference summaries is not covered in the generated summaries.
no code implementations • 13 Oct 2022 • Tsun-Hsuan Wang, Wei Xiao, Tim Seyde, Ramin Hasani, Daniela Rus
The advancement of robots, particularly those functioning in complex human-centric environments, relies on control solutions that are driven by machine learning.
no code implementations • 10 Oct 2022 • Wei Xiao, Tsun-Hsuan Wang, Ramin Hasani, Mathias Lechner, Yutong Ban, Chuang Gan, Daniela Rus
We propose a new method to ensure neural ordinary differential equations (ODEs) satisfy output specifications by using invariance set propagation.
no code implementations • 26 Sep 2022 • Ehsan Sabouni, Christos G. Cassandras, Wei Xiao, Nader Meskin
We address the problem of controlling Connected and Automated Vehicles (CAVs) in conflict areas of a traffic network subject to hard safety constraints.
1 code implementation • NAACL 2022 • Zhihan Zhou, Dejiao Zhang, Wei Xiao, Nicholas Dingwall, Xiaofei Ma, Andrew O. Arnold, Bing Xiang
In this paper, we introduce Dialogue Sentence Embedding (DSE), a self-supervised contrastive learning method that learns effective dialogue representations suitable for a wide range of dialogue tasks.
no code implementations • 24 Mar 2022 • Nader Meskin, Ehsan Sabouni, Wei Xiao, Christos G. Cassandras
The safety constraints and the vehicle limitations are considered using the Control Barrier Function (CBF) framework and a self-triggered scheme is proposed using the CBF constraints.
no code implementations • 22 Mar 2022 • Ehsan Sabouni, Christos G. Cassandras, Wei Xiao, Nader Meskin
We address the problem of controlling Connected and Automated Vehicles (CAVs) in conflict areas of a traffic network subject to hard safety constraints.
no code implementations • 8 Mar 2022 • Kaiyuan Xu, Wei Xiao, Christos G. Cassandras
We consider the merging control problem for Connected and Automated Vehicles (CAVs) aiming to jointly minimize travel time and energy consumption while providing speed-dependent safety guarantees and satisfying velocity and acceleration constraints.
no code implementations • 4 Mar 2022 • Wei Xiao, Tsun-Hsuan Wang, Makram Chahine, Alexander Amini, Ramin Hasani, Daniela Rus
They are interpretable at scale, achieve great test performance under limited training data, and are safety guaranteed in a series of autonomous driving scenarios such as lane keeping and obstacle avoidance.
1 code implementation • 3 Mar 2022 • Andy T. Liu, Wei Xiao, Henghui Zhu, Dejiao Zhang, Shang-Wen Li, Andrew Arnold
Recently, prompt-based learning for pre-trained language models has succeeded in few-shot Named Entity Recognition (NER) by exploiting prompts as task guidance to increase label efficiency.
no code implementations • 22 Nov 2021 • Wei Xiao, Ramin Hasani, Xiao Li, Daniela Rus
This paper introduces differentiable higher-order control barrier functions (CBF) that are end-to-end trainable together with learning systems.
no code implementations • 19 Oct 2021 • Wei Xiao, Qian Hu, Thahir Mohamed, Zheng Gao, Xibin Gao, Radhika Arava, Mohamed AbdelHady
Intelligent personal assistants (IPA) enable voice applications that facilitate people's daily tasks.
no code implementations • NAACL 2022 • Xisen Jin, Dejiao Zhang, Henghui Zhu, Wei Xiao, Shang-Wen Li, Xiaokai Wei, Andrew Arnold, Xiang Ren
We evaluate PTLM's ability to adapt to new corpora while retaining learned knowledge in earlier corpora.
2 code implementations • Findings (ACL) 2022 • Dejiao Zhang, Wei Xiao, Henghui Zhu, Xiaofei Ma, Andrew O. Arnold
We then define an instance discrimination task regarding this neighborhood and generate the virtual augmentation in an adversarial training manner.
1 code implementation • EMNLP 2021 • Dejiao Zhang, Shang-Wen Li, Wei Xiao, Henghui Zhu, Ramesh Nallapati, Andrew O. Arnold, Bing Xiang
Many recent successes in sentence representation learning have been achieved by simply fine-tuning on the Natural Language Inference (NLI) datasets with triplet loss or siamese loss.
no code implementations • 13 Apr 2021 • Kaiyuan Xu, Christos G. Cassandras, Wei Xiao
The paper considers the problem of controlling Connected and Automated Vehicles (CAVs) traveling through a three-entry roundabout so as to jointly minimize both the travel time and the energy consumption while providing speed-dependent safety guarantees, as well as satisfying velocity and acceleration constraints.
no code implementations • 29 Mar 2021 • Wei Xiao, Calin Belta, Christos G. Cassandras
We define a HOCBF for a safety requirement on the unmodelled system based on the adaptive dynamics and error states, and reformulate the safety-critical control problem as the above mentioned QP.
no code implementations • 14 Jan 2021 • Wei Xiao, Noushin Mehdipour, Anne Collin, Amitai Bin-Nun, Emilio Frazzoli, Radboud Duintjer Tebbens, Calin Belta
We develop optimal control strategies for Autonomous Vehicles (AVs) that are required to meet complex specifications imposed by traffic laws and cultural expectations of reasonable driving behavior.
Autonomous Driving Robotics Systems and Control Systems and Control
1 code implementation • 21 May 2020 • Hao Tang, Hong Liu, Wei Xiao, Nicu Sebe
Then the activated dictionary atoms are assembled and passed to the compound dictionary learning and coding layers.
no code implementations • 6 Dec 2019 • Wei Xiao, Calin A. Belta, Christos G. Cassandras
In this paper, we further improve the feasibility robustness (i. e., feasibility maintenance in the presence of time-varying and unknown unsafe sets) through the definition of a High Order CBF (HOCBF) that works for arbitrary relative degree constraints; this is achieved by a proposed feasibility-guided learning approach.
1 code implementation • 15 Jan 2019 • Hao Tang, Hong Liu, Wei Xiao, Nicu Sebe
Gesture recognition is a hot topic in computer vision and pattern recognition, which plays a vitally important role in natural human-computer interface.
Ranked #1 on Hand Gesture Recognition on Cambridge
1 code implementation • 11 Sep 2018 • Hao Tang, Heng Wei, Wei Xiao, Wei Wang, Dan Xu, Yan Yan, Nicu Sebe
In this paper, we propose a novel Deep Micro-Dictionary Learning and Coding Network (DDLCN).
1 code implementation • 5 Dec 2017 • Wei Xiao
This paper investigates the problem of computing nonparametric correlations on the fly for streaming data.
no code implementations • IJCNLP 2017 • Heba Elfardy, Manisha Srivastava, Wei Xiao, Jared Kramer, Tarun Agarwal
The ability to automatically and accurately process customer feedback is a necessity in the private sector.
2 code implementations • 19 Feb 2017 • Wei Xiao, Xiaolin Huang, Jorge Silva, Saba Emrani, Arin Chaudhuri
Robust PCA methods are typically batch algorithms which requires loading all observations into memory before processing.
no code implementations • 16 Jun 2016 • Arin Chaudhuri, Deovrat Kakde, Maria Jahja, Wei Xiao, Hansi Jiang, Seunghyun Kong, Sergiy Peredriy
Support Vector Data Description (SVDD) is a popular outlier detection technique which constructs a flexible description of the input data.
no code implementations • 18 Mar 2016 • Wei Xiao
Fault detection in industrial plants is a hot research area as more and more sensor data are being collected throughout the industrial process.