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As machine learning models continue to increase in complexity, collecting large hand-labeled training sets has become one of the biggest roadblocks in practice. Instead, weaker forms of supervision that provide noisier but cheaper labels…

Machine Learning · Statistics 2018-12-10 Alexander Ratner , Braden Hancock , Jared Dunnmon , Frederic Sala , Shreyash Pandey , Christopher Ré

Frame-level micro- and macro-expression spotting methods require time-consuming frame-by-frame observation during annotation. Meanwhile, video-level spotting lacks sufficient information about the location and number of expressions during…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Wang-Wang Yu , Xian-Shi Zhang , Fu-Ya Luo , Yijun Cao , Kai-Fu Yang , Hong-Mei Yan , Yong-Jie Li

We consider the scene text recognition problem under the attention-based encoder-decoder framework, which is the state of the art. The existing methods usually employ a frame-wise maximal likelihood loss to optimize the models. When we…

Computer Vision and Pattern Recognition · Computer Science 2018-05-10 Fan Bai , Zhanzhan Cheng , Yi Niu , Shiliang Pu , Shuigeng Zhou

Deep learning models trained in a fully supervised manner have been shown to rely on so-called "shortcut" features. Shortcut features are inputs that are associated with the outcome of interest in the training data, but are either no longer…

Machine Learning · Computer Science 2022-07-12 Anil Palepu , Andrew L Beam

Existing camouflaged object detection (COD) methods rely heavily on large-scale datasets with pixel-wise annotations. However, due to the ambiguous boundary, annotating camouflage objects pixel-wisely is very time-consuming and…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Ruozhen He , Qihua Dong , Jiaying Lin , Rynson W. H. Lau

Limited labeled data is becoming the largest bottleneck for supervised learning systems. This is especially the case for many real-world tasks where large scale annotated examples are either too expensive to acquire or unavailable due to…

Social and Information Networks · Computer Science 2020-05-28 Kai Shu , Ahmed Hassan Awadallah , Susan Dumais , Huan Liu

Scene text detection is an important step of scene text recognition system and also a challenging problem. Different from general object detection, the main challenges of scene text detection lie on arbitrary orientations, small sizes, and…

Computer Vision and Pattern Recognition · Computer Science 2018-04-30 Minghui Liao , Baoguang Shi , Xiang Bai

Handwritten text recognition in low resource scenarios, such as manuscripts with rare alphabets, is a challenging problem. The main difficulty comes from the very few annotated data and the limited linguistic information (e.g. dictionaries…

Computer Vision and Pattern Recognition · Computer Science 2022-06-14 Mohamed Ali Souibgui , Alicia Fornés , Yousri Kessentini , Beáta Megyesi

Computer vision tasks such as object detection and semantic/instance segmentation rely on the painstaking annotation of large training datasets. In this paper, we propose LocTex that takes advantage of the low-cost localized textual…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Zhijian Liu , Simon Stent , Jie Li , John Gideon , Song Han

Weakly supervised 3D object detection aims to learn a 3D detector with lower annotation cost, e.g., 2D labels. Unlike prior work which still relies on few accurate 3D annotations, we propose a framework to study how to leverage constraints…

Computer Vision and Pattern Recognition · Computer Science 2024-08-22 Kuan-Chih Huang , Yi-Hsuan Tsai , Ming-Hsuan Yang

In recent years, scene text recognition is always regarded as a sequence-to-sequence problem. Connectionist Temporal Classification (CTC) and Attentional sequence recognition (Attn) are two very prevailing approaches to tackle this problem…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Qi Song , Qianyi Jiang , Nan Li , Rui Zhang , Xiaolin Wei

We present a meta-learning framework for weakly supervised anomaly detection in videos, where the detector learns to adapt to unseen types of abnormal activities effectively when only video-level annotations of binary labels are available.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-28 Jaeyoo Park , Junha Kim , Bohyung Han

Weakly supervised LiDAR semantic segmentation has made significant strides with limited labeled data. However, most existing methods focus on the network training under weak supervision, while efficient annotation strategies remain largely…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Yilong Chen , Zongyi Xu , xiaoshui Huang , Ruicheng Zhang , Xinqi Jiang , Xinbo Gao

Automatic crack detection is a critical task that has the potential to drastically reduce labor-intensive building and road inspections currently being done manually. Recent studies in this field have significantly improved the detection…

Computer Vision and Pattern Recognition · Computer Science 2020-11-05 Yuki Inoue , Hiroto Nagayoshi

State-of-the-art visual recognition and detection systems increasingly rely on large amounts of training data and complex classifiers. Therefore it becomes increasingly expensive both to manually annotate datasets and to keep running times…

Computer Vision and Pattern Recognition · Computer Science 2014-12-02 Stefan Mathe , Cristian Sminchisescu

Unsupervised text embedding methods, such as Skip-gram and Paragraph Vector, have been attracting increasing attention due to their simplicity, scalability, and effectiveness. However, comparing to sophisticated deep learning architectures…

Computation and Language · Computer Science 2015-08-04 Jian Tang , Meng Qu , Qiaozhu Mei

Most existing approaches to disfluency detection heavily rely on human-annotated corpora, which is expensive to obtain in practice. There have been several proposals to alleviate this issue with, for instance, self-supervised learning…

Computation and Language · Computer Science 2020-10-30 Shaolei Wang , Zhongyuan Wang , Wanxiang Che , Ting Liu

User-generated reviews can be decomposed into fine-grained segments (e.g., sentences, clauses), each evaluating a different aspect of the principal entity (e.g., price, quality, appearance). Automatically detecting these aspects can be…

Machine Learning · Computer Science 2019-09-04 Giannis Karamanolakis , Daniel Hsu , Luis Gravano

Recent advances in unsupervised representation learning have demonstrated the impact of pretraining on large amounts of read speech. We adapt these techniques for domain adaptation in low-resource -- both in terms of data and compute --…

Computation and Language · Computer Science 2022-02-14 Chak-Fai Li , Francis Keith , William Hartmann , Matthew Snover

We propose a method for effectively utilizing weakly annotated image data in an object detection tasks of breast ultrasound images. Given the problem setting where a small, strongly annotated dataset and a large, weakly annotated dataset…

Computer Vision and Pattern Recognition · Computer Science 2020-08-20 JooYeol Yun , JungWoo Oh , IlDong Yun