Search Results for author: Xin Zhou

Found 36 papers, 13 papers with code

SoccerNet-Tracking: Multiple Object Tracking Dataset and Benchmark in Soccer Videos

no code implementations14 Apr 2022 Anthony Cioppa, Silvio Giancola, Adrien Deliege, Le Kang, Xin Zhou, Zhiyu Cheng, Bernard Ghanem, Marc Van Droogenbroeck

Tracking objects in soccer videos is extremely important to gather both player and team statistics, whether it is to estimate the total distance run, the ball possession or the team formation.

Multiple Object Tracking

Predicting and Explaining Mobile UI Tappability with Vision Modeling and Saliency Analysis

1 code implementation5 Apr 2022 Eldon Schoop, Xin Zhou, Gang Li, Zhourong Chen, Björn Hartmann, Yang Li

We use a deep learning based approach to predict whether a selected element in a mobile UI screenshot will be perceived by users as tappable, based on pixels only instead of view hierarchies required by previous work.

ASM-Loc: Action-aware Segment Modeling for Weakly-Supervised Temporal Action Localization

1 code implementation CVPR 2022 Bo He, Xitong Yang, Le Kang, Zhiyu Cheng, Xin Zhou, Abhinav Shrivastava

Without the boundary information of action segments, existing methods mostly rely on multiple instance learning (MIL), where the predictions of unlabeled instances (i. e., video snippets) are supervised by classifying labeled bags (i. e., untrimmed videos).

Weakly Supervised Temporal Action Localization

Carrier Phase Ranging for Indoor Positioning with 5G NR Signals

no code implementations22 Dec 2021 Liang Chen, Xin Zhou, Feifei Chen, Lie-Liang Yang, Ruizhi Chen

Indoor positioning is one of the core technologies of Internet of Things (IoT) and artificial intelligence (AI), and is expected to play a significant role in the upcoming era of AI.

VUT: Versatile UI Transformer for Multi-Modal Multi-Task User Interface Modeling

no code implementations10 Dec 2021 Yang Li, Gang Li, Xin Zhou, Mostafa Dehghani, Alexey Gritsenko

Our model consists of a multimodal Transformer encoder that jointly encodes UI images and structures, and performs UI object detection when the UI structures are absent in the input.

object-detection Object Detection +2

Plug-Tagger: A Pluggable Sequence Labeling Framework Using Language Models

no code implementations14 Oct 2021 Xin Zhou, Ruotian Ma, Tao Gui, Yiding Tan, Qi Zhang, Xuanjing Huang

Specifically, for each task, a label word set is first constructed by selecting a high-frequency word for each class respectively, and then, task-specific vectors are inserted into the inputs and optimized to manipulate the model predictions towards the corresponding label words.

Language Modelling Text Generation

Creating User Interface Mock-ups from High-Level Text Descriptions with Deep-Learning Models

no code implementations14 Oct 2021 Forrest Huang, Gang Li, Xin Zhou, John F. Canny, Yang Li

The design process of user interfaces (UIs) often begins with articulating high-level design goals.

VUT: Versatile UI Transformer for Multimodal Multi-Task User Interface Modeling

no code implementations29 Sep 2021 Yang Li, Gang Li, Xin Zhou, Mostafa Dehghani, Alexey A. Gritsenko

Our model consists of a multimodal Transformer encoder that jointly encodes UI images and structures, and performs UI object detection when the UI structures are absent in the input.

object-detection Object Detection +2

Template-free Prompt Tuning for Few-shot NER

1 code implementation28 Sep 2021 Ruotian Ma, Xin Zhou, Tao Gui, Yiding Tan, Linyang Li, Qi Zhang, Xuanjing Huang

Prompt-based methods have been successfully applied in sentence-level few-shot learning tasks, mostly owing to the sophisticated design of templates and label words.

Few-Shot Learning few-shot-ner +2

Large-Scale Modeling of Mobile User Click Behaviors Using Deep Learning

no code implementations11 Aug 2021 Xin Zhou, Yang Li

Modeling tap or click sequences of users on a mobile device can improve our understandings of interaction behavior and offers opportunities for UI optimization by recommending next element the user might want to click on.

Screen2Words: Automatic Mobile UI Summarization with Multimodal Learning

1 code implementation7 Aug 2021 Bryan Wang, Gang Li, Xin Zhou, Zhourong Chen, Tovi Grossman, Yang Li

Mobile User Interface Summarization generates succinct language descriptions of mobile screens for conveying important contents and functionalities of the screen, which can be useful for many language-based application scenarios.

SelfCF: A Simple Framework for Self-supervised Collaborative Filtering

1 code implementation7 Jul 2021 Xin Zhou, Aixin Sun, Yong liu, Jie Zhang, Chunyan Miao

Collaborative filtering (CF) is widely used to learn informative latent representations of users and items from observed interactions.

Collaborative Filtering Self-Supervised Learning

Feature Combination Meets Attention: Baidu Soccer Embeddings and Transformer based Temporal Detection

1 code implementation28 Jun 2021 Xin Zhou, Le Kang, Zhiyu Cheng, Bo He, Jingyu Xin

With rapidly evolving internet technologies and emerging tools, sports related videos generated online are increasing at an unprecedentedly fast pace.

Action Recognition Action Spotting +2

No Need for Interactions: Robust Model-Based Imitation Learning using Neural ODE

1 code implementation3 Apr 2021 HaoChih Lin, Baopu Li, Xin Zhou, Jiankun Wang, Max Q. -H. Meng

Interactions with either environments or expert policies during training are needed for most of the current imitation learning (IL) algorithms.

Imitation Learning

Existence of constant mean curvature 2-spheres in Riemannian 3-spheres

no code implementations24 Dec 2020 Da Rong Cheng, Xin Zhou

We prove the existence of branched immersed constant mean curvature 2-spheres in an arbitrary Riemannian 3-sphere for almost every prescribed mean curvature, and moreover for all prescribed mean curvatures when the 3-sphere is positively curved.

Differential Geometry Analysis of PDEs

Distances to molecular clouds in the second Galactic quadrant

no code implementations17 Dec 2020 Qing-Zeng Yan, Ji Yang, Yan Sun, Yang Su, Ye Xu, Hongchi Wang, Xin Zhou, Chen Wang

We present distances to 76 medium-sized molecular clouds and an extra large-scale one in the second Galactic quadrant ($104. 75^\circ <l<150. 25^\circ $ and $|b|<5. 25^\circ$), 73 of which are accurately measured for the first time.

Astrophysics of Galaxies

Semi-supervised Active Learning for Instance Segmentation via Scoring Predictions

no code implementations9 Dec 2020 Jun Wang, Shaoguo Wen, Kaixing Chen, Jianghua Yu, Xin Zhou, Peng Gao, Changsheng Li, Guotong Xie

Active learning generally involves querying the most representative samples for human labeling, which has been widely studied in many fields such as image classification and object detection.

Active Learning Image Classification +4

AI-lead Court Debate Case Investigation

no code implementations22 Oct 2020 Changzhen Ji, Xin Zhou, Conghui Zhu, Tiejun Zhao

The multi-role judicial debate composed of the plaintiff, defendant, and judge is an important part of the judicial trial.

Question Generation Text Generation

Cross Copy Network for Dialogue Generation

1 code implementation EMNLP 2020 Changzhen Ji, Xin Zhou, Yating Zhang, Xiaozhong Liu, Changlong Sun, Conghui Zhu, Tiejun Zhao

In the past few years, audiences from different fields witness the achievements of sequence-to-sequence models (e. g., LSTM+attention, Pointer Generator Networks, and Transformer) to enhance dialogue content generation.

Dialogue Generation

EGO-Planner: An ESDF-free Gradient-based Local Planner for Quadrotors

1 code implementation20 Aug 2020 Xin Zhou, Zhepei Wang, Chao Xu, Fei Gao

Gradient-based planners are widely used for quadrotor local planning, in which a Euclidean Signed Distance Field (ESDF) is crucial for evaluating gradient magnitude and direction.


CMPCC: Corridor-based Model Predictive Contouring Control for Aggressive Drone Flight

1 code implementation7 Jul 2020 Jialin Ji, Xin Zhou, Chao Xu, Fei Gao

In this paper, we propose an efficient, receding horizon, local adaptive low-level planner as the middle layer between our original planner and controller.


An Efficient Smoothing Proximal Gradient Algorithm for Convex Clustering

no code implementations22 Jun 2020 Xin Zhou, Chunlei Du, Xiaodong Cai

Our Sproga is faster than ADMM- or AMA-based convex clustering algorithms by one to two orders of magnitude.

Mapping Natural Language Instructions to Mobile UI Action Sequences

2 code implementations ACL 2020 Yang Li, Jiacong He, Xin Zhou, Yuan Zhang, Jason Baldridge

We present a new problem: grounding natural language instructions to mobile user interface actions, and create three new datasets for it.

Kalibre: Knowledge-based Neural Surrogate Model Calibration for Data Center Digital Twins

no code implementations29 Jan 2020 Ruihang Wang, Xin Zhou, Linsen Dong, Yonggang Wen, Rui Tan, Li Chen, Guan Wang, Feng Zeng

However, in the context of CFD, each search step requires long-lasting CFD model's iterated solving, rendering these approaches impractical with increased model complexity.

Auto Completion of User Interface Layout Design Using Transformer-Based Tree Decoders

no code implementations14 Jan 2020 Yang Li, Julien Amelot, Xin Zhou, Samy Bengio, Si Si

While we focus on interface layout prediction, our model can be generally applicable for other layout prediction problems that involve tree structures and 2-dimensional placements.

Automatic Business Process Structure Discovery using Ordered Neurons LSTM: A Preliminary Study

no code implementations5 Jan 2020 Xue Han, Lianxue Hu, Yabin Dang, Shivali Agarwal, Lijun Mei, Shaochun Li, Xin Zhou

Automatic process discovery from textual process documentations is highly desirable to reduce time and cost of Business Process Management (BPM) implementation in organizations.

Language Modelling

A Survey of Predictive Maintenance: Systems, Purposes and Approaches

no code implementations12 Dec 2019 Yongyi Ran, Xin Zhou, Pengfeng Lin, Yonggang Wen, Ruilong Deng

This paper provides a comprehensive literature review on Predictive Maintenance (PdM) with emphasis on system architectures, purposes and approaches.

Model Architecture Controls Gradient Descent Dynamics: A Combinatorial Path-Based Formula

no code implementations25 Sep 2019 Xin Zhou, Newsha Ardalani

However, our theoretical understanding of how model architecture affects performance or accuracy is limited.

Intelligent Trainer for Model-Based Reinforcement Learning

1 code implementation24 May 2018 Yuanlong Li, Linsen Dong, Xin Zhou, Yonggang Wen, Kyle Guan

Model-based reinforcement learning (MBRL) has been proposed as a promising alternative solution to tackle the high sampling cost challenge in the canonical reinforcement learning (RL), by leveraging a learned model to generate synthesized data for policy training purpose.

Model-based Reinforcement Learning OpenAI Gym +1

Alibaba at IJCNLP-2017 Task 2: A Boosted Deep System for Dimensional Sentiment Analysis of Chinese Phrases

no code implementations IJCNLP 2017 Xin Zhou, Jian Wang, Xu Xie, Changlong Sun, Luo Si

For word level task our best run achieved MAE 0. 545 (ranked 2nd), PCC 0. 892 (ranked 2nd) in valence prediction and MAE 0. 857 (ranked 1st), PCC 0. 678 (ranked 2nd) in arousal prediction.

Feature Engineering Part-Of-Speech Tagging +1

Causal nearest neighbor rules for optimal treatment regimes

no code implementations22 Nov 2017 Xin Zhou, Michael R. Kosorok

In this work, we propose a causal $k$-nearest neighbor method to estimate the optimal treatment regime.

Causal Inference Variable Selection

A Continuous Opinion Dynamic Model in Co-evolving Networks--A Novel Group Decision Approach

no code implementations17 May 2017 Qingxing Dong, Xin Zhou

In contrast to the traditional consensus oriented group decision making (GDM) framework, this paper proposes a framework with the co-evolution of both opinions and relationship networks to improve the potential consensus level of a group and help the group reach a stable state.

Decision Making

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