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Adversarial loss in a conditional generative adversarial network (GAN) is not designed to directly optimize evaluation metrics of a target task, and thus, may not always guide the generator in a GAN to generate data with improved metric…

Sound · Computer Science 2019-05-14 Szu-Wei Fu , Chien-Feng Liao , Yu Tsao , Shou-De Lin

In retrieval-based dialogue systems, a response selection model acts as a ranker to select the most appropriate response among several candidates. However, such selection models tend to rely on context-response content similarity, which…

Computation and Language · Computer Science 2022-11-01 Nyoungwoo Lee , ChaeHun Park , Ho-Jin Choi , Jaegul Choo

Deep neural networks (DNNs) are vulnerable to adversarial examples, which are crafted by adding imperceptible perturbations to inputs. Recently different attacks and strategies have been proposed, but how to generate adversarial examples…

Machine Learning · Computer Science 2021-01-13 Tao Bai , Jun Zhao , Jinlin Zhu , Shoudong Han , Jiefeng Chen , Bo Li , Alex Kot

Generative adversarial networks have seen rapid development in recent years and have led to remarkable improvements in generative modelling of images. However, their application in the audio domain has received limited attention, and…

Generative Adversarial Networks (GANs) can successfully approximate a probability distribution and produce realistic samples. However, open questions such as sufficient convergence conditions and mode collapse still persist. In this paper,…

Machine Learning · Computer Science 2019-03-13 Thang Doan , Joao Monteiro , Isabela Albuquerque , Bogdan Mazoure , Audrey Durand , Joelle Pineau , R Devon Hjelm

While generative adversarial networks (GANs) based neural text-to-speech (TTS) systems have shown significant improvement in neural speech synthesis, there is no TTS system to learn to synthesize speech from text sequences with only…

Audio and Speech Processing · Electrical Eng. & Systems 2020-12-15 Sang-Hoon Lee , Hyun-Wook Yoon , Hyeong-Rae Noh , Ji-Hoon Kim , Seong-Whan Lee

We propose a novel training algorithm for a multi-speaker neural text-to-speech (TTS) model based on multi-task adversarial training. A conventional generative adversarial network (GAN)-based training algorithm significantly improves the…

Sound · Computer Science 2022-09-27 Yusuke Nakai , Yuki Saito , Kenta Udagawa , Hiroshi Saruwatari

In open-domain dialogue systems, generative approaches have attracted much attention for response generation. However, existing methods are heavily plagued by generating safe responses and unnatural responses. To alleviate these two…

Computation and Language · Computer Science 2019-06-25 Shaobo Cui , Rongzhong Lian , Di Jiang , Yuanfeng Song , Siqi Bao , Yong Jiang

In this paper, we propose a model using generative adversarial net (GAN) to generate realistic text. Instead of using standard GAN, we combine variational autoencoder (VAE) with generative adversarial net. The use of high-level latent…

Computation and Language · Computer Science 2018-11-08 Heng Wang , Zengchang Qin , Tao Wan

Retrieval-Augmented Generation (RAG) systems and large language model (LLM)-powered chatbots have significantly advanced conversational AI by combining generative capabilities with external knowledge retrieval. Despite their success,…

Artificial Intelligence · Computer Science 2025-06-26 Priyaranjan Pattnayak , Amit Agarwal , Hansa Meghwani , Hitesh Laxmichand Patel , Srikant Panda

Although state-of-the-art parallel WaveNet has addressed the issue of real-time waveform generation, there remains problems. Firstly, due to the noisy input signal of the model, there is still a gap between the quality of generated and…

Audio and Speech Processing · Electrical Eng. & Systems 2019-07-22 Qiao Tian , Xucheng Wan , Shan Liu

We propose a novel technique to make neural network robust to adversarial examples using a generative adversarial network. We alternately train both classifier and generator networks. The generator network generates an adversarial…

Machine Learning · Computer Science 2023-07-06 Hyeungill Lee , Sungyeob Han , Jungwoo Lee

Most of the existing generative adversarial networks (GAN) for text generation suffer from the instability of reinforcement learning training algorithms such as policy gradient, leading to unstable performance. To tackle this problem, we…

Computation and Language · Computer Science 2019-08-21 Pei Ke , Fei Huang , Minlie Huang , Xiaoyan Zhu

This paper proposes a novel model for video generation and especially makes the attempt to deal with the problem of video generation from text descriptions, i.e., synthesizing realistic videos conditioned on given texts. Existing video…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Hongyuan Yu , Yan Huang , Lihong Pi , Liang Wang

Generative adversarial networks are generative models that are capable of replicating the implicit probability distribution of the input data with high accuracy. Traditionally, GANs consist of a Generator and a Discriminator which interact…

Machine Learning · Computer Science 2022-11-15 Xin Wang

Generative adversarial network (GAN) has achieved impressive success on cross-domain generation, but it faces difficulty in cross-modal generation due to the lack of a common distribution between heterogeneous data. Most existing methods of…

Computer Vision and Pattern Recognition · Computer Science 2018-04-03 Wen-Cheng Chen , Chien-Wen Chen , Min-Chun Hu

The design of better automated dialogue evaluation metrics offers the potential of accelerate evaluation research on conversational AI. However, existing trainable dialogue evaluation models are generally restricted to classifiers trained…

Computation and Language · Computer Science 2021-04-19 Xiang Gao , Yizhe Zhang , Michel Galley , Bill Dolan

This paper proposes an approach for applying GANs to NMT. We build a conditional sequence generative adversarial net which comprises of two adversarial sub models, a generator and a discriminator. The generator aims to generate sentences…

Computation and Language · Computer Science 2018-04-10 Zhen Yang , Wei Chen , Feng Wang , Bo Xu

Distant supervision can effectively label data for relation extraction, but suffers from the noise labeling problem. Recent works mainly perform soft bag-level noise reduction strategies to find the relatively better samples in a sentence…

Computation and Language · Computer Science 2018-05-28 Pengda Qin , Weiran Xu , William Yang Wang

Inspired by the recent advances in generative models, we introduce a human action generation model in order to generate a consecutive sequence of human motions to formulate novel actions. We propose a framework of an autoencoder and a…

Computer Vision and Pattern Recognition · Computer Science 2018-05-29 Mohammad Ahangar Kiasari , Dennis Singh Moirangthem , Minho Lee