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We investigate the problem of representing an entire video using CNN features for human action recognition. Currently, limited by GPU memory, we have not been able to feed a whole video into CNN/RNNs for end-to-end learning. A common…

Computer Vision and Pattern Recognition · Computer Science 2017-01-31 Zhenzhong Lan , Yi Zhu , Alexander G. Hauptmann

Deep auto-encoders (DAEs) have achieved great success in learning data representations via the powerful representability of neural networks. But most DAEs only focus on the most dominant structures which are able to reconstruct the data…

Machine Learning · Computer Science 2020-07-14 Zhao Kang , Xiao Lu , Jian Liang , Kun Bai , Zenglin Xu

Variational autoencoders (VAEs) learn representations of data by jointly training a probabilistic encoder and decoder network. Typically these models encode all features of the data into a single variable. Here we are interested in learning…

Learning visual representations with interpretable features, i.e., disentangled representations, remains a challenging problem. Existing methods demonstrate some success but are hard to apply to large-scale vision datasets like ImageNet. In…

Machine Learning · Computer Science 2023-06-01 Lilian Ngweta , Subha Maity , Alex Gittens , Yuekai Sun , Mikhail Yurochkin

Supervised multi-channel audio source separation requires extracting useful spectral, temporal, and spatial features from the mixed signals. The success of many existing systems is therefore largely dependent on the choice of features used…

Sound · Computer Science 2018-03-05 Emad M. Grais , Dominic Ward , Mark D. Plumbley

Audio pretrained models are widely employed to solve various tasks in speech processing, sound event detection, or music information retrieval. However, the representations learned by these models are unclear, and their analysis mainly…

This paper presents a practical approach to fine-grained information extraction. Through plenty of experiences of authors in practically applying information extraction to business process automation, there can be found a couple of…

Information Retrieval · Computer Science 2020-06-09 Minh-Tien Nguyen , Viet-Anh Phan , Le Thai Linh , Nguyen Hong Son , Le Tien Dung , Miku Hirano , Hajime Hotta

This work investigates pretrained audio representations for few shot Sound Event Detection. We specifically address the task of few shot detection of novel acoustic sequences, or sound events with semantically meaningful temporal structure,…

Sound · Computer Science 2023-05-05 Vasudha Kowtha , Miquel Espi Marques , Jonathan Huang , Yichi Zhang , Carlos Avendano

Designing appropriate features for acoustic event recognition tasks is an active field of research. Expressive features should both improve the performance of the tasks and also be interpret-able. Currently, heuristically designed features…

Sound · Computer Science 2016-11-30 Shuhui Qu , Juncheng Li , Wei Dai , Samarjit Das

Over the last decades, hand-crafted feature extractors have been used to encode image visual properties into feature vectors. Recently, data-driven feature learning approaches have been successfully explored as alternatives for producing…

Computer Vision and Pattern Recognition · Computer Science 2020-11-25 Érico M. Pereira , Ricardo da S. Torres , Jefersson A. dos Santos

We have two main contributions in this work: 1. We explore the usage of a stacked denoising autoencoder, and a paragraph vector model to learn task-independent dense patient representations directly from clinical notes. We evaluate these…

Computation and Language · Computer Science 2017-11-15 Madhumita Sushil , Simon Šuster , Kim Luyckx , Walter Daelemans

Zero-shot audio classification aims to recognize and classify a sound class that the model has never seen during training. This paper presents a novel approach for zero-shot audio classification using automatically generated sound attribute…

Sound · Computer Science 2024-07-22 Xuenan Xu , Pingyue Zhang , Ming Yan , Ji Zhang , Mengyue Wu

This paper proposes inverse feature learning as a novel supervised feature learning technique that learns a set of high-level features for classification based on an error representation approach. The key contribution of this method is to…

Machine Learning · Computer Science 2020-03-10 Behzad Ghazanfari , Fatemeh Afghah , MohammadTaghi Hajiaghayi

We introduce a new audio processing technique that increases the sampling rate of signals such as speech or music using deep convolutional neural networks. Our model is trained on pairs of low and high-quality audio examples; at test-time,…

Sound · Computer Science 2017-08-03 Volodymyr Kuleshov , S. Zayd Enam , Stefano Ermon

Probabilistic models learned as density estimators can be exploited in representation learning beside being toolboxes used to answer inference queries only. However, how to extract useful representations highly depends on the particular…

Machine Learning · Computer Science 2016-08-12 Antonio Vergari , Nicola Di Mauro , Floriana Esposito

In music domain, feature learning has been conducted mainly in two ways: unsupervised learning based on sparse representations or supervised learning by semantic labels such as music genre. However, finding discriminative features in an…

Sound · Computer Science 2018-06-20 Jiyoung Park , Jongpil Lee , Jangyeon Park , Jung-Woo Ha , Juhan Nam

Feature extraction from persistence diagrams, as a tool to enrich machine learning techniques, has received increasing attention in recent years. In this paper we explore an adaptive methodology to localize features in persistent diagrams,…

Machine Learning · Computer Science 2019-10-16 Luis Polanco , Jose A. Perea

This paper proposes a deep denoising auto-encoder technique to extract better acoustic features for speech synthesis. The technique allows us to automatically extract low-dimensional features from high dimensional spectral features in a…

Sound · Computer Science 2015-06-18 Zhenzhou Wu , Shinji Takaki , Junichi Yamagishi

Studying tongue motion during speech using ultrasound is a standard procedure, but automatic ultrasound image labelling remains a challenge, as standard tongue shape extraction methods typically require human intervention. This article…

Computer Vision and Pattern Recognition · Computer Science 2016-05-20 Aurore Jaumard-Hakoun , Kele Xu , Pierre Roussel-Ragot , Gérard Dreyfus , Bruce Denby

High-level musical qualities (such as emotion) are often abstract, subjective, and hard to quantify. Given these difficulties, it is not easy to learn good feature representations with supervised learning techniques, either because of the…

Audio and Speech Processing · Electrical Eng. & Systems 2020-07-31 Hao Hao Tan , Dorien Herremans