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This paper presents an end-to-end neural network model, named Neural Generative Question Answering (GENQA), that can generate answers to simple factoid questions, based on the facts in a knowledge-base. More specifically, the model is built…

Computation and Language · Computer Science 2016-04-25 Jun Yin , Xin Jiang , Zhengdong Lu , Lifeng Shang , Hang Li , Xiaoming Li

End-to-end generation-based approaches have been investigated and applied in task-oriented dialogue systems. However, in industrial scenarios, existing methods face the bottlenecks of controllability (e.g., domain-inconsistent responses,…

Computation and Language · Computer Science 2023-04-04 Yuncheng Hua , Xiangyu Xi , Zheng Jiang , Guanwei Zhang , Chaobo Sun , Guanglu Wan , Wei Ye

Most of the existing works for dialogue generation are data-driven models trained directly on corpora crawled from websites. They mainly focus on improving the model architecture to produce better responses but pay little attention to…

Computation and Language · Computer Science 2021-06-23 Xin Li , Piji Li , Yan Wang , Xiaojiang Liu , Wai Lam

Large language models can produce fluent dialogue but often hallucinate factual inaccuracies. While retrieval-augmented models help alleviate this issue, they still face a difficult challenge of both reasoning to provide correct knowledge…

Computation and Language · Computer Science 2021-11-10 Leonard Adolphs , Kurt Shuster , Jack Urbanek , Arthur Szlam , Jason Weston

Recently, topic-grounded dialogue system has attracted significant attention due to its effectiveness in predicting the next topic to yield better responses via the historical context and given topic sequence. However, almost all existing…

Computation and Language · Computer Science 2022-10-18 Xiaofei Wen , Wei Wei , Xian-Ling Mao

In this paper, we have used Recurrent Neural Networks to capture and model human motion data and generate motions by prediction of the next immediate data point at each time-step. Our RNN is armed with recently proposed Gated Recurrent…

Neural and Evolutionary Computing · Computer Science 2015-01-05 Mohammad Pezeshki

Recurrent Neural Networks can be trained to produce sequences of tokens given some input, as exemplified by recent results in machine translation and image captioning. The current approach to training them consists of maximizing the…

Machine Learning · Computer Science 2015-09-24 Samy Bengio , Oriol Vinyals , Navdeep Jaitly , Noam Shazeer

Classic pipeline models for task-oriented dialogue system require explicit modeling the dialogue states and hand-crafted action spaces to query a domain-specific knowledge base. Conversely, sequence-to-sequence models learn to map dialogue…

Computation and Language · Computer Science 2018-06-13 Haoyang Wen , Yijia Liu , Wanxiang Che , Libo Qin , Ting Liu

The encoder-decoder framework has achieved promising process for many sequence generation tasks, such as neural machine translation and text summarization. Such a framework usually generates a sequence token by token from left to right,…

Computation and Language · Computer Science 2019-06-25 Long Zhou , Jiajun Zhang , Chengqing Zong , Heng Yu

Sequence-to-sequence models have lead to significant progress in keyphrase generation, but it remains unknown whether they are reliable enough to be beneficial for document retrieval. This study provides empirical evidence that such models…

Information Retrieval · Computer Science 2021-06-29 Florian Boudin , Ygor Gallina , Akiko Aizawa

Recent works using artificial neural networks based on word distributed representation greatly boost the performance of various natural language learning tasks, especially question answering. Though, they also carry along with some…

Computation and Language · Computer Science 2016-12-23 Lingxun Meng , Yan Li , Mengyi Liu , Peng Shu

There is an increasing demand for task-oriented dialogue systems which can assist users in various activities such as booking tickets and restaurant reservations. In order to complete dialogues effectively, dialogue policy plays a key role…

Computation and Language · Computer Science 2019-09-23 Tian Lan , Xianling Mao , Heyan Huang

We introduce a novel sequence-to-sequence (seq2seq) voice conversion (VC) model based on the Transformer architecture with text-to-speech (TTS) pretraining. Seq2seq VC models are attractive owing to their ability to convert prosody. While…

Audio and Speech Processing · Electrical Eng. & Systems 2019-12-17 Wen-Chin Huang , Tomoki Hayashi , Yi-Chiao Wu , Hirokazu Kameoka , Tomoki Toda

Generative seq2seq dialogue systems are trained to predict the next word in dialogues that have already occurred. They can learn from large unlabeled conversation datasets, build a deeper understanding of conversational context, and…

Computation and Language · Computer Science 2019-11-21 Sam Shleifer , Manish Chablani , Anitha Kannan , Namit Katariya , Xavier Amatriain

Automatic question generation is an important technique that can improve the training of question answering, help chatbots to start or continue a conversation with humans, and provide assessment materials for educational purposes. Existing…

Computation and Language · Computer Science 2019-02-28 Bang Liu , Mingjun Zhao , Di Niu , Kunfeng Lai , Yancheng He , Haojie Wei , Yu Xu

In a controlled experiment of sequence-to-sequence approaches for the task of sentence correction, we find that character-based models are generally more effective than word-based models and models that encode subword information via…

Computation and Language · Computer Science 2017-07-31 Allen Schmaltz , Yoon Kim , Alexander M. Rush , Stuart M. Shieber

Neural networks have shown to be a practical way of building a very complex mapping between a pre-specified input space and output space. For example, a convolutional neural network (CNN) mapping an image into one of a thousand object…

Computer Vision and Pattern Recognition · Computer Science 2016-11-10 Huayan Wang , Anna Chen , Yi Liu , Dileep George , D. Scott Phoenix

Auto-regressive text generation models usually focus on local fluency, and may cause inconsistent semantic meaning in long text generation. Further, automatically generating words with similar semantics is challenging, and hand-crafted…

Computation and Language · Computer Science 2020-05-05 Ruiyi Zhang , Changyou Chen , Zhe Gan , Wenlin Wang , Dinghan Shen , Guoyin Wang , Zheng Wen , Lawrence Carin

A multi-turn dialogue always follows a specific topic thread, and topic shift at the discourse level occurs naturally as the conversation progresses, necessitating the model's ability to capture different topics and generate topic-aware…

Computation and Language · Computer Science 2021-09-14 Hongru Wang , Mingyu Cui , Zimo Zhou , Gabriel Pui Cheong Fung , Kam-Fai Wong

Neural networks are vulnerable to input perturbations such as additive noise and adversarial attacks. In contrast, human perception is much more robust to such perturbations. The Bayesian brain hypothesis states that human brains use an…

Machine Learning · Computer Science 2020-11-11 Yujia Huang , James Gornet , Sihui Dai , Zhiding Yu , Tan Nguyen , Doris Y. Tsao , Anima Anandkumar