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Sequential sensor data is generated in a wide variety of practical applications. A fundamental challenge involves learning effective classifiers for such sequential data. While deep learning has led to impressive performance gains in recent…

机器学习 · 计算机科学 2020-10-07 Nauman Ahad , Mark A. Davenport

Many parametric statistical models are not properly normalised and only specified up to an intractable partition function, which renders parameter estimation difficult. Examples of unnormalised models are Gibbs distributions, Markov random…

机器学习 · 统计学 2018-06-12 Ciwan Ceylan , Michael U. Gutmann

We present UNSEE: Unsupervised Non-Contrastive Sentence Embeddings, a novel approach that outperforms SimCSE in the Massive Text Embedding benchmark. Our exploration begins by addressing the challenge of representation collapse, a…

计算与语言 · 计算机科学 2024-02-05 Ömer Veysel Çağatan

Utilizing language models (LMs) without internal access is becoming an attractive paradigm in the field of NLP as many cutting-edge LMs are released through APIs and boast a massive scale. The de-facto method in this type of black-box…

计算与语言 · 计算机科学 2023-06-12 Hyunsoo Cho , Youna Kim , Sang-goo Lee

In semi-supervised learning for classification, it is assumed that every ground truth class of data is present in the small labelled dataset. Many real-world sparsely-labelled datasets are plausibly not of this type. It could easily be the…

机器学习 · 统计学 2021-01-11 Matthew Willetts , Stephen J Roberts , Christopher C Holmes

Semi-supervised learning (SSL) provides a powerful framework for leveraging unlabeled data when labels are limited or expensive to obtain. SSL algorithms based on deep neural networks have recently proven successful on standard benchmark…

机器学习 · 计算机科学 2019-05-28 Jiaxing Wang , Yin Zheng , Xiaoshuang Chen , Junzhou Huang , Jian Cheng

Learning sentence embeddings often requires a large amount of labeled data. However, for most tasks and domains, labeled data is seldom available and creating it is expensive. In this work, we present a new state-of-the-art unsupervised…

计算与语言 · 计算机科学 2021-09-13 Kexin Wang , Nils Reimers , Iryna Gurevych

For object detection, it is possible to view the prediction of bounding boxes as a reverse diffusion process. Using a diffusion model, the random bounding boxes are iteratively refined in a denoising step, conditioned on the image. We…

计算机视觉与模式识别 · 计算机科学 2023-12-20 Leander van den Heuvel , Gertjan Burghouts , David W. Zhang , Gwenn Englebienne , Sabina B. van Rooij

In this paper, we propose a new text recognition model based on measuring the visual similarity of text and predicting the content of unlabeled texts. First a Siamese convolutional network is trained with deep supervision on a labeled…

计算机视觉与模式识别 · 计算机科学 2016-07-06 Ehsan Hosseini-Asl , Angshuman Guha

The current trend in automatic speech recognition is to leverage large amounts of labeled data to train supervised neural network models. Unfortunately, obtaining data for a wide range of domains to train robust models can be costly.…

计算与语言 · 计算机科学 2018-06-14 Wei-Ning Hsu , Hao Tang , James Glass

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…

计算与语言 · 计算机科学 2015-08-04 Jian Tang , Meng Qu , Qiaozhu Mei

Novel class discovery (NCD) aims to infer novel categories in an unlabeled dataset leveraging prior knowledge of a labeled set comprising disjoint but related classes. Existing research focuses primarily on utilizing the labeled set at the…

计算机视觉与模式识别 · 计算机科学 2023-01-30 Ziyun Li , Jona Otholt , Ben Dai , Di hu , Christoph Meinel , Haojin Yang

Automatically highlighting words that cause semantic differences between two documents could be useful for a wide range of applications. We formulate recognizing semantic differences (RSD) as a token-level regression task and study three…

计算与语言 · 计算机科学 2023-10-23 Jannis Vamvas , Rico Sennrich

Recently, hybrid systems of clustering and neural diarization models have been successfully applied in multi-party meeting analysis. However, current models always treat overlapped speaker diarization as a multi-label classification…

声音 · 计算机科学 2022-11-21 Zhihao Du , Shiliang Zhang , Siqi Zheng , Zhijie Yan

Sentence representation at the semantic level is a challenging task for Natural Language Processing and Artificial Intelligence. Despite the advances in word embeddings (i.e. word vector representations), capturing sentence meaning is an…

We introduce a novel unsupervised loss function for learning semantic segmentation with deep convolutional neural nets (ConvNet) when densely labeled training images are not available. More specifically, the proposed loss function penalizes…

计算机视觉与模式识别 · 计算机科学 2018-08-09 Mehran Javanmardi , Mehdi Sajjadi , Ting Liu , Tolga Tasdizen

Deep learning approaches for semantic segmentation rely primarily on supervised learning approaches and require substantial efforts in producing pixel-level annotations. Further, such approaches may perform poorly when applied to unseen…

计算机视觉与模式识别 · 计算机科学 2021-10-22 Ying Chen , Xu Ouyang , Kaiyue Zhu , Gady Agam

In this article, we investigate the use of a probabilistic model for unsupervised clustering in text collections. Unsupervised clustering has become a basic module for many intelligent text processing applications, such as information…

信息检索 · 计算机科学 2016-08-16 Loïs Rigouste , Olivier Cappé , François Yvon

Learning interpretable disentangled representations is a crucial yet challenging task. In this paper, we propose a weakly semi-supervised method, termed as Dual Swap Disentangling (DSD), for disentangling using both labeled and unlabeled…

计算机视觉与模式识别 · 计算机科学 2020-01-03 Zunlei Feng , Xinchao Wang , Chenglong Ke , Anxiang Zeng , Dacheng Tao , Mingli Song

We present a semi-supervised method for panoptic segmentation based on ConsInstancy regularisation, a novel strategy for semi-supervised learning. It leverages completely unlabelled data by enforcing consistency between predicted instance…

计算机视觉与模式识别 · 计算机科学 2022-07-06 Max Coenen , Tobias Schack , Dries Beyer , Christian Heipke , Michael Haist