Search Results for author: BoWen Zhang

Found 18 papers, 5 papers with code

FlexMatch: Boosting Semi-Supervised Learning with Curriculum Pseudo Labeling

1 code implementation NeurIPS 2021 BoWen Zhang, Yidong Wang, Wenxin Hou, Hao Wu, Jindong Wang, Manabu Okumura, Takahiro Shinozaki

However, like other modern SSL algorithms, FixMatch uses a pre-defined constant threshold for all classes to select unlabeled data that contribute to the training, thus failing to consider different learning status and learning difficulties of different classes.

Curriculum Learning Semi-Supervised Image Classification

Visually Grounded Concept Composition

no code implementations Findings (EMNLP) 2021 BoWen Zhang, Hexiang Hu, Linlu Qiu, Peter Shaw, Fei Sha

We investigate ways to compose complex concepts in texts from primitive ones while grounding them in images.

Systematic Generalization on gSCAN: What is Nearly Solved and What is Next?

1 code implementation EMNLP 2021 Linlu Qiu, Hexiang Hu, BoWen Zhang, Peter Shaw, Fei Sha

We analyze the grounded SCAN (gSCAN) benchmark, which was recently proposed to study systematic generalization for grounded language understanding.

Language understanding Systematic Generalization

Dynamic Neural Representational Decoders for High-Resolution Semantic Segmentation

no code implementations NeurIPS 2021 BoWen Zhang, Yifan Liu, Zhi Tian, Chunhua Shen

This neural representation enables our decoder to leverage the smoothness prior in the semantic label space, and thus makes our decoder more efficient.

Semantic Segmentation

Enhanced Hyperspectral Image Super-Resolution via RGB Fusion and TV-TV Minimization

1 code implementation13 Jun 2021 Marija Vella, BoWen Zhang, Wei Chen, João F. C. Mota

Such methods, however, cannot guarantee that the input measurements are satisfied in the recovered image, since the learned parameters by the network are applied to every test image.

Hyperspectral Image Super-Resolution Image Super-Resolution

CREATe: Clinical Report Extraction and Annotation Technology

no code implementations28 Feb 2021 Yichao Zhou, Wei-Ting Chen, BoWen Zhang, David Lee, J. Harry Caufield, Kai-Wei Chang, Yizhou Sun, Peipei Ping, Wei Wang

Clinical case reports are written descriptions of the unique aspects of a particular clinical case, playing an essential role in sharing clinical experiences about atypical disease phenotypes and new therapies.

Instance and Panoptic Segmentation Using Conditional Convolutions

no code implementations5 Feb 2021 Zhi Tian, BoWen Zhang, Hao Chen, Chunhua Shen

In the literature, top-performing instance segmentation methods typically follow the paradigm of Mask R-CNN and rely on ROI operations (typically ROIAlign) to attend to each instance.

Instance Segmentation Panoptic Segmentation

A Hierarchical Multi-Modal Encoder for Moment Localization in Video Corpus

no code implementations18 Nov 2020 BoWen Zhang, Hexiang Hu, Joonseok Lee, Ming Zhao, Sheide Chammas, Vihan Jain, Eugene Ie, Fei Sha

Identifying a short segment in a long video that semantically matches a text query is a challenging task that has important application potentials in language-based video search, browsing, and navigation.

Language Modelling Temporal Localization +1

Solving Sparse Linear Inverse Problems in Communication Systems: A Deep Learning Approach With Adaptive Depth

no code implementations29 Oct 2020 Wei Chen, BoWen Zhang, Shi Jin, Bo Ai, Zhangdui Zhong

Sparse signal recovery problems from noisy linear measurements appear in many areas of wireless communications.

Learning to Represent Image and Text with Denotation Graph

no code implementations EMNLP 2020 BoWen Zhang, Hexiang Hu, Vihan Jain, Eugene Ie, Fei Sha

Recent progresses have leveraged the ideas of pre-training (from language modeling) and attention layers in Transformers to learn representation from datasets containing images aligned with linguistic expressions that describe the images.

Image Retrieval Language Modelling +1

Online Action Detection in Streaming Videos with Time Buffers

no code implementations6 Oct 2020 BoWen Zhang, Hao Chen, Meng Wang, Yuanjun Xiong

We formulate the problem of online temporal action detection in live streaming videos, acknowledging one important property of live streaming videos that there is normally a broadcast delay between the latest captured frame and the actual frame viewed by the audience.

Action Detection

Enhancing Cross-target Stance Detection with Transferable Semantic-Emotion Knowledge

no code implementations ACL 2020 Bowen Zhang, Min Yang, Xutao Li, Yunming Ye, Xiaofei Xu, Kuai Dai

Specifically, a semantic-emotion heterogeneous graph is constructed from external semantic and emotion lexicons, which is then fed into a graph convolutional network to learn multi-hop semantic connections between words and emotion tags.

Stance Detection Transfer Learning

Challenging the adversarial robustness of DNNs based on error-correcting output codes

no code implementations26 Mar 2020 Bowen Zhang, Benedetta Tondi, Xixiang Lv, Mauro Barni

The existence of adversarial examples and the easiness with which they can be generated raise several security concerns with regard to deep learning systems, pushing researchers to develop suitable defense mechanisms.

Adversarial Attack Adversarial Robustness +2

Visual Storytelling via Predicting Anchor Word Embeddings in the Stories

no code implementations13 Jan 2020 Bowen Zhang, Hexiang Hu, Fei Sha

To narrate a sequence of images, we use the predicted anchor word embeddings and the image features as the joint input to a seq2seq model.

Visual Storytelling Word Embeddings

Attacking CNN-based anti-spoofing face authentication in the physical domain

no code implementations1 Oct 2019 Bowen Zhang, Benedetta Tondi, Mauro Barni

In this paper, we study the vulnerability of anti-spoofing methods based on deep learning against adversarial perturbations.

Cryptography and Security

Cross-Modal and Hierarchical Modeling of Video and Text

1 code implementation ECCV 2018 Bowen Zhang, Hexiang Hu, Fei Sha

Similarly, a paragraph may contain sentences with different topics, which collectively conveys a coherent message or story.

Action Recognition Video Captioning +1

Few Shot Learning with Simplex

no code implementations27 Jul 2018 Bowen Zhang, Xifan Zhang, Fan Cheng, Deli Zhao

During testing, combined with the test sample and the points in the class, a new simplex is formed.

Few-Shot Learning

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